refactor(module): promote module path hanzoai/iam2 → hanzoai/iam (canonical)

The clean-room rewrite takes the canonical hanzoai/iam name; the retired Casdoor
fork now lives at hanzoai/iam-v1. Module path + self-imports rewritten; builds green.

Co-Authored-By: Claude <noreply@anthropic.com>

.dockerignore

@@ -0,0 +1,6 @@
+data/
+*.db
+*.db-*
+.git/
+.claude/
+node_modules/

.gitea/workflows/build.yaml

@@ -0,0 +1,57 @@
+# Native Hanzo CI — git.hanzo.ai (Gitea Actions). Self-contained: plain docker
+# buildx build+push, NO GitHub-specific reusable workflow, so it runs on a Gitea
+# act_runner (and equally on any standard runner). Hanzo GitOps then reconciles
+# the image tag onto the cluster.
+#
+# Registry: pushes to the Hanzo container registry. REGISTRY + IMAGE + creds come
+# from repo/org Actions secrets (REGISTRY_USER / REGISTRY_TOKEN), provisioned from
+# KMS — never inline. Falls back to ghcr.io during the mirror transition.
+name: build
+on:
+  push:
+    branches: [main]
+    tags: ['v*']
+  workflow_dispatch:
+
+jobs:
+  docker:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Resolve image + version
+        id: meta
+        run: |
+          echo "registry=${REGISTRY:-ghcr.io}" >> "$GITHUB_OUTPUT"
+          echo "image=${REGISTRY:-ghcr.io}/hanzoai/iam2" >> "$GITHUB_OUTPUT"
+          ref="${GITHUB_REF##*/}"
+          case "$GITHUB_REF" in
+            refs/tags/v*) ver="$ref" ;;                       # v0.1.0
+            *)            ver="sha-$(echo "$GITHUB_SHA" | cut -c1-7)" ;;
+          esac
+          echo "version=$ver" >> "$GITHUB_OUTPUT"
+
+      - uses: docker/setup-buildx-action@v3
+
+      - name: Registry login
+        uses: docker/login-action@v3
+        with:
+          registry: ${{ steps.meta.outputs.registry }}
+          username: ${{ secrets.REGISTRY_USER || github.actor }}
+          password: ${{ secrets.REGISTRY_TOKEN || secrets.GITHUB_TOKEN }}
+
+      - name: Build + push (amd64; pure-Go, jsonv2 per SCALE_STANDARD)
+        uses: docker/build-push-action@v6
+        with:
+          context: .
+          platforms: linux/amd64
+          target: STANDARD
+          push: true
+          build-args: |
+            GO_EXPERIMENT=jsonv2
+            VERSION=${{ steps.meta.outputs.version }}
+          tags: |
+            ${{ steps.meta.outputs.image }}:${{ steps.meta.outputs.version }}
+        env:
+          DOCKER_BUILD_SUMMARY: "false"
+          DOCKER_BUILD_RECORD_UPLOAD: "false"

.github/workflows/build.yml

@@ -0,0 +1,74 @@
+# Native Hanzo CI — git.hanzo.ai (Gitea Actions). Self-contained: plain docker
+# buildx build+push, NO GitHub-specific reusable workflow, so it runs on a Gitea
+# act_runner (and equally on any standard runner). Hanzo GitOps then reconciles
+# the image tag onto the cluster.
+#
+# Registry: pushes to the Hanzo container registry. REGISTRY + IMAGE + creds come
+# from repo/org Actions secrets (REGISTRY_USER / REGISTRY_TOKEN), provisioned from
+# KMS — never inline. Falls back to ghcr.io during the mirror transition.
+name: build
+on:
+  push:
+    branches: [main]
+    tags: ['v*']
+  workflow_dispatch:
+
+permissions:
+  contents: read
+  packages: write   # the automatic GITHUB_TOKEN is denied ghcr write without this
+
+jobs:
+  docker:
+    # The ARC self-hosted scale set, as every working hanzo build uses. GitHub-hosted
+    # `ubuntu-latest` is billing-frozen for the org, so a run on it never starts —
+    # which is why every prior iam2 build silently failed to produce an image.
+    runs-on: hanzo-build-linux-amd64
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Resolve image + version
+        id: meta
+        run: |
+          echo "registry=${REGISTRY:-ghcr.io}" >> "$GITHUB_OUTPUT"
+          echo "image=${REGISTRY:-ghcr.io}/hanzoai/iam2" >> "$GITHUB_OUTPUT"
+          ref="${GITHUB_REF##*/}"
+          case "$GITHUB_REF" in
+            refs/tags/v*) ver="$ref" ;;                       # v0.1.0
+            *)            ver="sha-$(echo "$GITHUB_SHA" | cut -c1-7)" ;;
+          esac
+          echo "version=$ver" >> "$GITHUB_OUTPUT"
+
+      - uses: docker/setup-buildx-action@v3
+
+      - name: Registry login
+        uses: docker/login-action@v3
+        with:
+          registry: ${{ steps.meta.outputs.registry }}
+          # GH_PAT (admin:org + write:packages) — the automatic GITHUB_TOKEN is
+          # denied write to ghcr.io/hanzoai/* (permission_denied: write_package),
+          # the same reason hanzoai/cloud logs in with GH_PAT.
+          username: hanzo-dev
+          password: ${{ secrets.GH_PAT }}
+
+      - name: Build + push (amd64; pure-Go, jsonv2 per SCALE_STANDARD)
+        uses: docker/build-push-action@v6
+        with:
+          context: .
+          platforms: linux/amd64
+          target: STANDARD
+          push: true
+          build-args: |
+            GO_EXPERIMENT=jsonv2
+            VERSION=${{ steps.meta.outputs.version }}
+          # iam2's private modules (hanzoai/orm → hanzoai/dbx, hanzoai/sqlite) are
+          # fetched inside the build via this token — the Dockerfile mounts it as
+          # GIT_AUTH_TOKEN. GH_PAT (admin:org read) is what hanzoai/cloud uses to
+          # fetch the same private cross-repo modules; the automatic GITHUB_TOKEN
+          # cannot (it only reads the repo it runs in), which is why dbx 404'd.
+          secrets: |
+            GIT_AUTH_TOKEN=${{ secrets.GH_PAT }}
+          tags: |
+            ${{ steps.meta.outputs.image }}:${{ steps.meta.outputs.version }}
+        env:
+          DOCKER_BUILD_SUMMARY: "false"
+          DOCKER_BUILD_RECORD_UPLOAD: "false"

Dockerfile

@@ -0,0 +1,48 @@
+# Hanzo IAM v2 — proprietary identity service (zip + orm, no Casdoor).
+# Multi-stage Go build → distroless-style alpine. Pure-Go (CGO_ENABLED=0);
+# hanzoai/sqlite uses the modernc engine so no cgo/musl toolchain is needed.
+
+FROM golang:1.26.4 AS build
+WORKDIR /src
+
+# Cache the module graph before copying the source. iam2 imports private hanzoai
+# modules (hanzoai/orm, hanzoai/sqlite), so mark them private (direct fetch, no
+# sumdb) and — when a GIT_AUTH_TOKEN is mounted — rewrite github.com to an
+# authenticated fetch so `go mod download` can read them. Same pattern as
+# hanzoai/cloud; without the token it is a no-op (a public-only build still works).
+ENV GOPRIVATE=github.com/hanzoai/*
+COPY go.mod go.sum ./
+RUN --mount=type=secret,id=GIT_AUTH_TOKEN \
+    if [ -s /run/secrets/GIT_AUTH_TOKEN ]; then \
+      git config --global url."https://x-access-token:$(cat /run/secrets/GIT_AUTH_TOKEN)@github.com/".insteadOf "https://github.com/"; \
+    fi && \
+    go mod download
+
+COPY . .
+
+# Per SCALE_STANDARD.md §2 — every Go production Dockerfile that emits JSON to a
+# client builds with GOEXPERIMENT=jsonv2 (zip's edge JSON path).
+ARG GO_EXPERIMENT=jsonv2
+ENV GOEXPERIMENT=${GO_EXPERIMENT}
+
+ARG VERSION=dev
+RUN CGO_ENABLED=0 go build -trimpath \
+      -ldflags "-s -w -X main.version=${VERSION}" \
+      -o /out/iam2 .
+
+FROM alpine:latest AS STANDARD
+LABEL org.opencontainers.image.source="https://github.com/hanzoai/iam2"
+LABEL org.opencontainers.image.title="Hanzo IAM v2"
+RUN apk add --no-cache ca-certificates && update-ca-certificates \
+    && adduser -D -u 1000 hanzo \
+    && mkdir -p /data && chown -R hanzo:hanzo /data
+USER 1000
+WORKDIR /
+COPY --from=build --chown=hanzo:hanzo /out/iam2 /iam2
+
+# Serves the IAM v2 API over ZAP (:9653) + the HTTP edge (:8080). Bootstrap the
+# config with --init-data /etc/iam/init_data.json (mounted from the same
+# init_data ConfigMap the Casdoor iam uses; ${VAR} creds from the KMS-synced env).
+EXPOSE 8080 9653
+ENTRYPOINT ["/iam2"]
+CMD ["serve", "--db", "/data/iam2.db", "--http", "http://:8080", "--zap", ":9653"]

MIGRATION.md

@@ -1,8 +1,11 @@
 # IAM v2 Migration
 
 Casdoor fork (`hanzoai/iam`: Beego + xorm, Apache-2.0) → `hanzoai/iam2`:
-clean-room, proprietary, on the native Hanzo stack. Phased and drift-gated —
-the identity binary is never rewritten in one shot.
+clean-room, proprietary, on the native Hanzo stack. Phased and additive — the
+identity binary is never rewritten in one shot, and v1 stays live and
+authoritative until the supervised cutover. Parity is proven by tests + golden
+vectors captured from v1's own code + a route-level parity audit, and by a
+shadow deployment against real traffic — not by a swap on faith.
 
 ## §1 Why
 
@@ -15,66 +18,159 @@ own framework — we own it, and it collapses to one way of doing each thing.
 
 - **HTTP** — `github.com/zap-proto/zip` (typed `zip.Get[In,Out]` handlers on the
   `zap-proto/fiber/v3` engine, specificity routing, OpenAPI 3.1 at the edge).
-- **Storage** — `github.com/hanzoai/orm` (typed Go records + KV cache) over
-  `github.com/hanzoai/base` (collections, realtime, replicate-to-S3). SQLite —
-  never Postgres for the local/default path.
-- **Authz** — `github.com/hanzoai/authz`, one canonical policy engine, called
-  over ZAP RPC. No in-process copy.
-- **OIDC/OAuth2** — in-tree port (no external OIDC library). ML-DSA-65 hybrid
-  JWT signing; JWKS cache.
-- **Inter-service** — `github.com/luxfi/zap` binary RPC. HTTPS is the external
-  edge only; all service↔service is ZAP (platform law).
+- **Storage** — `github.com/hanzoai/orm` (typed Go records + KV cache). Default
+  is embedded SQLite (`hanzoai/sqlite`, pure-Go, WAL) — never Postgres. The same
+  `orm.DB` abstraction pluggably targets `hanzoai/sql` / `hanzoai/datastore` over
+  ZAP (`--store sql|datastore`), so iam2 gains ZAP-native persistence + snapshots
+  with zero code change once orm's ZAP backend is enabled.
+- **OIDC/OAuth2** — in-tree (no external OIDC library). RS256 today; ML-DSA-65
+  hybrid JWT signing + real JWKS from the Cert entity.
+- **Password verify** — algorithm resolved from the stored row (`internal/cred`):
+  argon2id (every live v1 row) + bcrypt (new iam2 rows), verify-only, fail-closed.
+- **Inter-service** — `zap-proto` binary RPC. HTTPS is the external edge only; all
+  service↔service is ZAP (platform law).
+- **Authz** — `github.com/hanzoai/authz` policy engine (`internal/authz` gate).
+
+## §2.1 RFC/IETF-standard surface — no Casdoor verbs (HIP-0111)
+
+The wire contract is RFC/OpenID-standard only; there are no Casdoor verb aliases
+(`get-users`, `add-user`, `get-account`, `issue-user-token`, …) and no `access_token`
+duplicate of the token endpoint. Each capability is served by its standard, all
+shipped (iam2 tags):
+
+| Capability | Standard | Endpoint | Tag |
+|-----------|----------|----------|-----|
+| Authorize / token | RFC 6749 (code+PKCE, refresh, client_credentials, **password**) | `/v1/iam/oauth/{authorize,token}` | v0.5.0 |
+| Delegation / on-behalf-of | **RFC 8693 Token Exchange** (replaces `issue-user-token`) | `grant_type=…token-exchange` | v0.7.0 |
+| Introspection / revocation | RFC 7662 / RFC 7009 | `/v1/iam/oauth/{introspect,revoke}` | v0.6.0 |
+| AS metadata / discovery / JWKS | RFC 8414 / OIDC Discovery / RFC 7517 | `/.well-known/*` | v0.6.0 |
+| Account claims | **OIDC UserInfo** (carries owner/organization/email/isAdmin/type — the get-account contract) | `/v1/iam/oauth/userinfo` | v0.9.0 |
+| Identity provisioning | **SCIM 2.0** (RFC 7644/7643; replaces get-/add-/update-/delete-user) | `/v1/iam/scim/v2/Users` | v0.8.0 (v0.8.1 authz fix) |
+| Resource indicators / issuer pin | RFC 8707 + `IAM_ISSUER` | token `aud`/`iss` | v0.5.0 |
+| Social sign-in / federation | **OIDC/OAuth2 Relying Party** (Authorization-Code + PKCE; Google = OIDC Discovery, GitHub = OAuth2 + userinfo) | authorize `?provider=<name>` → `/v1/iam/oauth/callback` | v0.15.0 |
+
+Deploy env: `IAM_ISSUER=https://<brand-id>`, `IAM_KEY_MINT_ALLOWED_APPS` (token
+exchange + `hk-` key mint) and `IAM_ADMIN_MINT_ALLOWED_APPS` (reserved-org targets)
+— both matched by the globally-unique clientId only.
+
+**Federation (social sign-in), v0.15.0.** iam2 completes a Google/GitHub sign-in
+as a standard OIDC/OAuth2 Relying Party — no Casdoor verbs, no tokens-in-query.
+The authorize endpoint, once it has validated the client and its EXACT
+redirect_uri, treats a `?provider=<providerName>` request as a federation
+kickoff: it stashes the app-leg request in a single-use, expiring,
+browser-bound `FederationState` (state = an opaque 256-bit row key; a `hanzo_fed`
+HttpOnly+Secure+SameSite=Lax cookie binds it to the initiating browser) and 302s
+to the IdP with iam2's callback as the redirect_uri, an IdP-leg S256 PKCE
+verifier, and (OIDC) a nonce. The fixed public callback `/v1/iam/oauth/callback`
+resolves + burns the transaction (expiry + browser-binding checked), exchanges
+the IdP code, and VERIFIES the response — for OIDC the id_token signature
+(against the discovered JWKS, alg pinned to RS/ES), issuer, audience (= our
+client id), expiry, and nonce; for GitHub the userinfo + a GitHub-verified
+primary email. It then LINKS or PROVISIONS a local user (match by provider
+subject, else by VERIFIED email, else provision — never `isAdmin`, federated
+accounts carry no password) and mints iam2's OWN authorization code bound to the
+original PKCE/redirect/nonce, so the relying party's existing PKCE code→token
+exchange completes unchanged. Provider credentials/endpoints come from the
+existing `providers` rows (`clientId`/`clientSecret`/`type`/`scopes`/`issuerUrl`
+or the `custom*Url` overrides); the linked subject is persisted on the User's
+per-connector column (`google`/`github`/…).
+
+Remaining for cutover: migrate the clients (console `IamAdminApi`/`identity.ts`,
+gateway admin-guard, portal) off the Casdoor verbs onto these standards via
+`@hanzo/iam` (+ a SCIM client + token-exchange), then retire `internal/compat` and
+`get-account`. iam2 already serves everything the clients need in standard form.
 
 ## §3 Phases
 
-| Phase | Scope | Gate to exit |
-|------:|-------|--------------|
-| 0 | Scaffold: Base boots, v2 collection namespace claimed, `/v1/iam/v2/health`, `compare` CLI. | Binary builds and boots. |
-| 1 | Entity schemas (fields + indexes) + CRUD handlers on `zip` + `orm`, per resource. | Per-entity field parity vs v1; handlers pass tests. |
-| 2 | In-tree OIDC/OAuth2 server: `/v1/iam/oauth/*`, `/v1/iam/.well-known/*`, JWT (ML-DSA-65), JWKS. | Token/userinfo/authorize parity vs v1. |
-| 3 | Authz via `hanzoai/authz` over ZAP RPC; retire in-process authz. | Policy decisions match v1. |
-| 4 | Parity: run `iam2 compare` continuously against a v1 read replica. | **drift = 0** (or a known v1-only residual v2 does not model). |
-| 5 | Cutover: import v1 data, promote `iam2` to the `iam` mount, archive the fork. | Green in prod; rollback path proven. |
+| Phase | Scope | Exit |
+|------:|-------|------|
+| 1 | Entity schemas (full fields) + owner-scoped CRUD on `zip`+`orm`, 13 identity entities. | ✅ Field-complete vs v1; handlers tested. |
+| 2 | In-tree OIDC/OAuth2: discovery, JWKS, authorize, token (PKCE S256 + JWT), refresh, userinfo, logout; front-door login/get-app-login/auth-methods. | ✅ Core flow (login→code→token→JWT) tested; front-door residual in progress (below). |
+| 3 | Authz via `hanzoai/authz` gate over the entity CRUD. | ✅ In `internal/authz`. |
+| — | ~~Drift gate~~ **DROPPED.** Parity is proven by tests + golden vectors (a real v1 argon2id digest verifies) + a route-level parity audit + a shadow deployment — not a row-count diff. The read-only `compare` CLI remains as a diagnostic, not a gate. | — |
+| 4 | **Bootstrap + embed.** Seed the real config (orgs/apps/providers/certs) from the same `init_data.json` v1 uses (`internal/seed` — 79 apps / 9 orgs). Embed in `hanzoai/cloud` via `server.Mount`, SHADOW-FIRST (own prefix, alongside live Casdoor, non-destructive). | Shadow serves real `get-app-login`/login against seeded config. |
+| 5 | **Cutover.** Import the user rows (password hashes verify as-is — see §5), flip iam2 onto the canonical `/v1/iam/*`, archive the fork. | Green in prod; rollback proven. |
 
-Phases 0–4 are additive and non-destructive — v1 stays live and authoritative
-until Phase 5. Routes carry a `/v1/iam/v2/*` prefix through the transition so
-they are orthogonal to the live `/v1/iam/*` mount; the prefix collapses at §6.
+## §4 Front-door residual (gates cutover)
 
-## §4 Domain model (v1 xorm table → v2 Base collection)
+The OIDC/OAuth2 protocol surface is complete. HIP-0111 §6's *native front-door* —
+what the hosted `hanzo.id` portal itself calls, distinct from the OIDC surface
+client apps use — is now complete: `get-app-login`, `login`, `auth/methods`,
+`userinfo`, `logout`, `refresh`, `authorize`, `get-account`,
+`send-verification-code`, `signup`. A backend swap without these takes the
+portal's account page, email verification, and signup with it, so cutover was
+gated on them. Serve under `/v1/iam/*` (no `/api/`, no new prefix).
 
-Thirteen identity entities. Field-completeness is mandatory — a dropped column
-is lost auth data.
+The **durable session** is wired (`internal/sessions`): a bare `login`
+(type=login) issues a signed, revocable session cookie (`hanzo_session`, HMAC
+keyed off the platform signing cert — no new secret), and `get-account` resolves
+the caller by cookie first (the portal + admin-guard path) then bearer (the API
+path) — two credentials, one identity. The cookie's `sid` is registered in the
+`Session` row and re-checked on every resolve, so logout/rotation revokes it.
+§4 is closed; iam2 is Phase-4 shadow-embed ready.
 
-| v1 table (xorm)       | v2 collection (Base)   | Base kind |
-|-----------------------|------------------------|-----------|
-| `user`                | `users`                | auth      |
-| `organization`        | `organizations`        | base      |
-| `application`         | `applications`         | base      |
-| `provider`            | `providers`            | base      |
-| `role`                | `roles`                | base      |
-| `permission`          | `permissions`          | base      |
-| `cert`                | `certs`                | base      |
-| `key`                 | `keys`                 | base      |
-| `webauthn_credential` | `webauthn_credentials` | base      |
-| `session`             | `sessions`             | base      |
-| `token`               | `tokens`               | base      |
-| `record`              | `audit_logs`           | base      |
-| `invitation`          | `invitations`          | base      |
+The `signup`/`send-verification-code` pair carries two deliberate seams vs v1,
+each a missing iam2 dependency, not a shortcut: (1) signup lands the user in the
+app's **existing** org — v1's founder-org mint (`TenantOrgForSignup`) needs an
+org-create helper + the `Org.Parent` tenant model iam2 has not modeled yet;
+(2) `send-verification-code` persists a verifiable OTP (the `verifications`
+entity) but the email/SMS **delivery** is owned by `hanzoai/notify`, not wired
+into iam2 — the endpoint reports `ok` honestly and never fakes a "sent" claim.
 
-**Deliberately not modeled by iam2** (they belong to commerce/other services,
-not identity): `payment`, `plan`, `product`, `subscription`, `pricing`,
-`model`, `adapter`, `enforcer`, `syncer_*`.
+Three facts the port must honour, each verified against live v1:
+- **`get-account` is a security contract, not a convenience.** The gateway's
+  admin-guard derives the **SuperAdmin predicate** from it
+  (`gateway/cmd/admin-guard/main.go`); waitlist-guard derives **approval**. Its
+  response shape (owner/isAdmin/… + no secret material) must match exactly.
+- **`send-verification-code` takes `multipart/form-data`, not JSON.**
+- Native **`userinfo`/`logout` are aliases** of the `oauth/*` handlers
+  (`routers/router.go` + `authz_filter.go` collapse them) — register the alias,
+  never fork a second implementation.
 
-## §5 Drift gate
+## §5 Credential parity (the cutover landmine, RESOLVED)
 
-`iam2 compare --legacy <v1-dsn>` opens the v1 database **read-only** (only
-`SELECT COUNT(*)`), opens the v2 Base store read-only, and prints per-entity
-row counts plus absolute drift. This is the gate that keeps cutover honest:
-drift must be 0 before Phase 5 import goes live. No writes, no DDL, ever.
+Every live v1 row is **argon2id** (`object/organization.go sanitizeOrgPasswordType`
+rewrites `""`/`bcrypt`/`plain` → `argon2id`; `UpdateUserPassword` stamps it per
+user). A bcrypt-only verifier handed an argon2id PHC digest returns
+`ErrHashTooShort` → **100% of logins fail at cutover.** Fixed: `internal/cred`
+resolves the algorithm **from the row** (`user.PasswordType` → fallback
+`organization.PasswordType`), matching v1's `object/check.go`, and verifies
+argon2id + bcrypt, verify-only, fail-closed on any unknown scheme. Proven by a
+**golden vector** — a digest produced by v1's *own* `Argon2idCredManager`
+verifies under iam2 (`internal/cred/golden_v1_test.go`), across the v0→v1.0.0
+library-version gap. So existing users' hashes verify unchanged at import — no
+password reset, no re-hash on read.
 
-## §6 Cutover
+## §6 Domain model (v1 xorm table → v2 orm kind)
 
-At Phase 5, with drift proven 0: import v1 rows into v2 collections, drop the
-`/v2` route prefix so `iam2` answers on `/v1/iam/*`, repoint the `iam` image /
-operator CR / DNS to `iam2`, and archive `hanzoai/iam`. One identity binary,
-one way, no Casdoor.
+Fourteen identity entities. Field-completeness is mandatory — a dropped column is
+lost auth data.
+
+| v1 table (xorm)       | v2 orm kind            |
+|-----------------------|------------------------|
+| `user`                | `users` (auth)         |
+| `organization`        | `organizations`        |
+| `application`         | `applications`         |
+| `provider`            | `providers`            |
+| `role`                | `roles`                |
+| `permission`          | `permissions`          |
+| `cert`                | `certs`                |
+| `key`                 | `keys`                 |
+| `webauthn_credential` | `webauthn_credentials` |
+| `session`             | `sessions`             |
+| `token`               | `tokens`               |
+| `record`              | `audit_logs`           |
+| `invitation`          | `invitations`          |
+| `verification`        | `verifications`        |
+
+**Deliberately NOT modeled by iam2** (they belong to other services or are
+replaced by `hanzoai/authz`): `payment`, `plan`, `product`, `subscription`,
+`pricing`, `model`, `adapter`, `enforcer`, `syncer_*`, LDAP.
+
+## §7 Build & deploy
+
+Builds CGO-free (`hanzoai/sqlite` is pure-Go), pinned to published `hanzoai/orm`
++ `zap-proto/zip` (no local replaces). Native CI at `.gitea/workflows/build.yaml`
+(git.hanzo.ai act_runner) + a mirror `.github/workflows/build.yml`, both
+self-contained (no reusable-workflow dependency). Canonical pipeline is
+**git.hanzo.ai + Hanzo GitOps**; GitHub is a downstream mirror.

README.md

@@ -12,24 +12,26 @@ identity binary carries no upstream copyright or license obligations.
 | Concern        | Component | Notes |
 |----------------|-----------|-------|
 | HTTP           | [`zap-proto/zip`](https://github.com/zap-proto/zip) | Typed handlers (`zip.Get[In,Out]`) on the `zap-proto/fiber/v3` engine; specificity routing; OpenAPI 3.1 |
-| Storage        | [`hanzoai/orm`](https://github.com/hanzoai/orm) over [`hanzoai/base`](https://github.com/hanzoai/base) | Typed Go records + KV cache; collections + realtime + replicate-to-S3; SQLite (no Postgres) |
+| Storage        | [`hanzoai/orm`](https://github.com/hanzoai/orm) (embedded SQLite via hanzoai/sqlite) | Typed Go records + KV cache; typed Go records + KV cache; embedded SQLite (no Postgres), ZAP backends pluggable |
 | Authorization  | [`hanzoai/authz`](https://github.com/hanzoai/authz) | One canonical policy engine, called over ZAP RPC |
 | OIDC / OAuth2  | in-tree | ML-DSA-65 hybrid JWT; no external OIDC library |
-| Inter-service  | `luxfi/zap` | Binary RPC. HTTPS is the external surface only |
+| Inter-service  | `zap-proto` | Binary RPC. HTTPS is the external surface only |
 
 ## Status
 
-Phase 0. The binary boots Base, registers the v2 collection schema, serves
-`/v1/iam/v2/health`, and ships a read-only drift CLI. Cutover off `hanzoai/iam`
-is gated on `iam2 compare` reading **drift = 0** against a v1 replica.
+OAuth2/OIDC core is live and tested (login → PKCE code → token → JWT): OIDC
+discovery + JWKS, get-app-login + auth/methods, credential login (bcrypt,
+email/username), the token endpoint (RS256 JWT), and init_data bootstrap that
+seeds the real config (79 apps / 9 orgs). Embeddable via `server.Mount`. Builds
+on Hanzo CI (`ghcr.io/hanzoai/iam2`).
 
-See [MIGRATION.md](./MIGRATION.md) for the full phased plan.
+See [MIGRATION.md](./MIGRATION.md) for the phased plan.
 
 ## Build & run
 
 ```sh
 go build ./...
-go run . serve                              # Base + v2 schema + /v1/iam/v2/health
+go run . serve --init-data init_data.json   # seed config + serve OIDC/login
 go run . compare --legacy postgres://…/iam  # read-only v1 ↔ v2 drift report
 ```
 

feature/feature.go

@@ -0,0 +1,72 @@
+// Copyright 2026 Hanzo AI, Inc. All rights reserved.
+
+// Package feature is the seam enterprise capabilities plug into. A module
+// (hanzoiam/scim, saml, ldap, …) implements Feature and reads/writes the core's
+// identity via the injected Store — so it shares ONE identity store with the core
+// and never carries a second copy. The core NEVER imports a module; dependency
+// flows one way (module → feature).
+package feature
+
+import (
+	"context"
+
+	"github.com/zap-proto/zip"
+
+	"github.com/hanzoai/iam/pkg/model"
+)
+
+// Store is the identity surface a feature needs — the union of the calls the
+// copied Casdoor code makes (object.* → store.*). The core implements it over its
+// orm store (internal/featurestore). A feature ignores methods it doesn't use.
+type Store interface {
+	GetUser(ctx context.Context, owner, name string) (*model.User, error)
+	GetUserByID(ctx context.Context, id string) (*model.User, error)
+	GetGlobalUsers(ctx context.Context, offset, limit int) ([]*model.User, int, error)
+	AddUser(ctx context.Context, u *model.User) (bool, error)
+	UpdateUser(ctx context.Context, u *model.User) (bool, error)
+	DeleteUser(ctx context.Context, owner, name string) (bool, error)
+	GetApplication(ctx context.Context, id string) (*model.Application, error)
+	GetOrganization(ctx context.Context, name string) (*model.Organization, error)
+	// GetProvider resolves an identity provider by (owner, name) — the SP-inbound
+	// SAML/OAuth surface (a user signing in through a corporate IdP where Hanzo is
+	// the Service Provider). SAML SP-initiated login reads its IdP config from here.
+	GetProvider(ctx context.Context, owner, name string) (*model.Provider, error)
+	// GetCert resolves a signing cert by (owner, name) — SAML metadata signing, etc.
+	GetCert(ctx context.Context, owner, name string) (*model.Cert, error)
+	// SetPassword sets a user's password: the core hashes the plaintext exactly
+	// once and stores only the one-way digest (never the clear text). Used by SCIM
+	// to provision the `password` attribute. An empty plaintext leaves the digest
+	// untouched. Hashing lives in ONE place (the core) — a module never sees a hash.
+	SetPassword(ctx context.Context, owner, name, plaintext string) (bool, error)
+	// VerifyPassword reports whether plaintext matches the user's stored digest
+	// (argon2id for migrated v1 rows, bcrypt for v2, per the org's password type).
+	// Used by LDAP bind — verification stays in the core, never in a module.
+	VerifyPassword(ctx context.Context, owner, name, plaintext string) (bool, error)
+}
+
+// Feature is one pluggable enterprise capability. Mount registers its routes on
+// the shared app, backed by store. Name is for diagnostics.
+type Feature interface {
+	Name() string
+	Mount(app *zip.App, store Store) error
+}
+
+var registry []Feature
+
+// Register adds a feature to the set MountAll mounts. Called by the composing
+// binary (cloud) or a module init — the core decides which enterprise features ship.
+func Register(f Feature) { registry = append(registry, f) }
+
+// Registered returns the registered features (diagnostics/tests).
+func Registered() []Feature { return append([]Feature(nil), registry...) }
+
+// MountAll mounts every registered feature on app with store, fail-fast: a
+// registered-but-broken enterprise module surfaces loudly at boot, never a silent no-op.
+func MountAll(app *zip.App, store Store) error {
+	for _, f := range registry {
+		if err := f.Mount(app, store); err != nil {
+			return err
+		}
+	}
+	return nil
+}

feature/feature_test.go

@@ -0,0 +1,72 @@
+// Copyright 2026 Hanzo AI, Inc. All rights reserved.
+package feature_test
+
+import (
+	"context"
+	"testing"
+
+	"github.com/zap-proto/zip"
+
+	"github.com/hanzoai/iam/feature"
+	"github.com/hanzoai/iam/pkg/model"
+)
+
+// A registered feature is mounted by MountAll and reaches the app + store; a
+// module that fails to mount surfaces the error (fail-fast).
+type fakeFeature struct {
+	name    string
+	mounted bool
+	err     error
+}
+
+func (f *fakeFeature) Name() string { return f.name }
+func (f *fakeFeature) Mount(app *zip.App, store feature.Store) error {
+	f.mounted = true
+	return f.err
+}
+
+type nopStore struct{}
+
+func (nopStore) GetUser(context.Context, string, string) (*model.User, error) { return nil, nil }
+func (nopStore) GetUserByID(context.Context, string) (*model.User, error)     { return nil, nil }
+func (nopStore) GetGlobalUsers(context.Context, int, int) ([]*model.User, int, error) {
+	return nil, 0, nil
+}
+func (nopStore) AddUser(context.Context, *model.User) (bool, error)                 { return true, nil }
+func (nopStore) UpdateUser(context.Context, *model.User) (bool, error)              { return true, nil }
+func (nopStore) DeleteUser(context.Context, string, string) (bool, error)           { return true, nil }
+func (nopStore) GetApplication(context.Context, string) (*model.Application, error) { return nil, nil }
+func (nopStore) GetOrganization(context.Context, string) (*model.Organization, error) {
+	return nil, nil
+}
+func (nopStore) GetCert(context.Context, string, string) (*model.Cert, error) { return nil, nil }
+func (nopStore) GetProvider(context.Context, string, string) (*model.Provider, error) {
+	return nil, nil
+}
+func (nopStore) SetPassword(context.Context, string, string, string) (bool, error) {
+	return true, nil
+}
+func (nopStore) VerifyPassword(context.Context, string, string, string) (bool, error) {
+	return true, nil
+}
+
+func TestMountAll_MountsRegistered(t *testing.T) {
+	f := &fakeFeature{name: "fake"}
+	feature.Register(f)
+	app := zip.New(zip.Config{DisableStartupMessage: true})
+	if err := feature.MountAll(app, nopStore{}); err != nil {
+		t.Fatalf("MountAll: %v", err)
+	}
+	if !f.mounted {
+		t.Fatal("registered feature was not mounted")
+	}
+	found := false
+	for _, r := range feature.Registered() {
+		if r.Name() == "fake" {
+			found = true
+		}
+	}
+	if !found {
+		t.Fatal("Registered() did not list the feature")
+	}
+}

go.mod

@@ -1,4 +1,4 @@
-module github.com/hanzoai/iam2
+module github.com/hanzoai/iam
 
 go 1.26.4
 
@@ -8,7 +8,8 @@ go 1.26.4
 require (
 	github.com/hanzoai/orm v0.6.1
 	github.com/spf13/cobra v1.10.2
-	github.com/zap-proto/zip v1.6.0
+	github.com/zap-proto/zip v1.8.3
+	golang.org/x/crypto v0.53.0
 )
 
 // Migration-only: linked solely in `go build -tags migration` so `iam2 compare`
@@ -19,10 +20,22 @@ require (
 	github.com/jackc/pgx/v5 v5.9.2
 )
 
+require (
+	github.com/alexedwards/argon2id v1.0.0
+	github.com/golang-jwt/jwt/v5 v5.3.1
+	github.com/luxfi/crypto v1.20.1
+	github.com/luxwallet/connect/go v0.1.4
+	github.com/pquerna/otp v1.5.0
+	github.com/zap-proto/fiber/v3 v3.2.1
+)
+
 require (
 	filippo.io/edwards25519 v1.1.0 // indirect
 	github.com/andybalholm/brotli v1.2.1 // indirect
+	github.com/boombuler/barcode v1.0.1-0.20190219062509-6c824513bacc // indirect
 	github.com/cespare/xxhash/v2 v2.3.0 // indirect
+	github.com/cloudflare/circl v1.6.3 // indirect
+	github.com/decred/dcrd/dcrec/secp256k1/v4 v4.4.1 // indirect
 	github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f // indirect
 	github.com/dlclark/regexp2/v2 v2.2.1 // indirect
 	github.com/dop251/goja v0.0.0-20260607120635-348e6bea910d // indirect
@@ -33,6 +46,7 @@ require (
 	github.com/gofiber/utils/v2 v2.0.4 // indirect
 	github.com/google/pprof v0.0.0-20250317173921-a4b03ec1a45e // indirect
 	github.com/google/uuid v1.6.0 // indirect
+	github.com/gorilla/rpc v1.2.1 // indirect
 	github.com/hanzoai/dbx v1.16.0 // indirect
 	github.com/hanzoai/kv-go/v9 v9.18.0 // indirect
 	github.com/hanzoai/sqlite v0.2.1 // indirect
@@ -40,38 +54,42 @@ require (
 	github.com/jackc/pgpassfile v1.0.0 // indirect
 	github.com/jackc/pgservicefile v0.0.0-20240606120523-5a60cdf6a761 // indirect
 	github.com/jackc/puddle/v2 v2.2.2 // indirect
-	github.com/klauspost/compress v1.18.5 // indirect
+	github.com/klauspost/compress v1.18.6 // indirect
+	github.com/luxfi/accel v1.2.4 // indirect
+	github.com/luxfi/cache v1.2.1 // indirect
+	github.com/luxfi/codec v1.1.4 // indirect
+	github.com/luxfi/container v0.0.4 // indirect
+	github.com/luxfi/ids v1.2.10 // indirect
 	github.com/luxfi/log v1.4.3 // indirect
+	github.com/luxfi/math v1.4.1 // indirect
+	github.com/luxfi/math/big v0.1.0 // indirect
+	github.com/luxfi/metric v1.5.7 // indirect
+	github.com/luxfi/mock v0.1.1 // indirect
 	github.com/mattn/go-colorable v0.1.14 // indirect
 	github.com/mattn/go-isatty v0.0.21 // indirect
 	github.com/mattn/go-sqlite3 v1.14.47 // indirect
+	github.com/mr-tron/base58 v1.3.0 // indirect
 	github.com/ncruces/go-strftime v1.0.0 // indirect
+	github.com/oasisprotocol/curve25519-voi v0.0.0-20251114093237-2ab5a27a1729 // indirect
 	github.com/philhofer/fwd v1.2.0 // indirect
 	github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec // indirect
 	github.com/spf13/pflag v1.0.9 // indirect
 	github.com/tinylib/msgp v1.6.4 // indirect
 	github.com/valyala/bytebufferpool v1.0.0 // indirect
 	github.com/valyala/fasthttp v1.70.0 // indirect
-	github.com/zap-proto/fiber/v3 v3.2.1 // indirect
 	github.com/zap-proto/go v1.3.0 // indirect
 	github.com/zap-proto/http v0.2.0 // indirect
 	go.uber.org/atomic v1.11.0 // indirect
-	golang.org/x/crypto v0.50.0 // indirect
-	golang.org/x/net v0.53.0 // indirect
-	golang.org/x/sync v0.20.0 // indirect
-	golang.org/x/sys v0.43.0 // indirect
-	golang.org/x/text v0.36.0 // indirect
+	go.uber.org/mock v0.6.0 // indirect
+	golang.org/x/exp v0.0.0-20260312153236-7ab1446f8b90 // indirect
+	golang.org/x/net v0.55.0 // indirect
+	golang.org/x/sync v0.21.0 // indirect
+	golang.org/x/sys v0.46.0 // indirect
+	golang.org/x/text v0.38.0 // indirect
+	google.golang.org/protobuf v1.36.11 // indirect
 	gopkg.in/natefinch/lumberjack.v2 v2.2.1 // indirect
 	modernc.org/libc v1.72.0 // indirect
 	modernc.org/mathutil v1.7.1 // indirect
 	modernc.org/memory v1.11.0 // indirect
 	modernc.org/sqlite v1.48.1 // indirect
 )
-
-// Local checkouts during the migration so iam2 stays in sync with patches
-// landing in orm and zip. Switch to pinned vX.Y.Z once the v2 surface
-// stabilises (Phase 1).
-replace (
-	github.com/hanzoai/orm => ../orm
-	github.com/zap-proto/zip => ../../zap-proto/zip
-)

go.sum

@@ -2,18 +2,28 @@ filippo.io/edwards25519 v1.1.0 h1:FNf4tywRC1HmFuKW5xopWpigGjJKiJSV0Cqo0cJWDaA=
 filippo.io/edwards25519 v1.1.0/go.mod h1:BxyFTGdWcka3PhytdK4V28tE5sGfRvvvRV7EaN4VDT4=
 github.com/Masterminds/semver/v3 v3.5.0 h1:kQceYJfbupGfZOKZQg0kou0DgAKhzDg2NZPAwZ/2OOE=
 github.com/Masterminds/semver/v3 v3.5.0/go.mod h1:4V+yj/TJE1HU9XfppCwVMZq3I84lprf4nC11bSS5beM=
+github.com/alexedwards/argon2id v1.0.0 h1:wJzDx66hqWX7siL/SRUmgz3F8YMrd/nfX/xHHcQQP0w=
+github.com/alexedwards/argon2id v1.0.0/go.mod h1:tYKkqIjzXvZdzPvADMWOEZ+l6+BD6CtBXMj5fnJppiw=
 github.com/andybalholm/brotli v1.2.1 h1:R+f5xP285VArJDRgowrfb9DqL18yVK0gKAW/F+eTWro=
 github.com/andybalholm/brotli v1.2.1/go.mod h1:rzTDkvFWvIrjDXZHkuS16NPggd91W3kUSvPlQ1pLaKY=
+github.com/boombuler/barcode v1.0.1-0.20190219062509-6c824513bacc h1:biVzkmvwrH8WK8raXaxBx6fRVTlJILwEwQGL1I/ByEI=
+github.com/boombuler/barcode v1.0.1-0.20190219062509-6c824513bacc/go.mod h1:paBWMcWSl3LHKBqUq+rly7CNSldXjb2rDl3JlRe0mD8=
 github.com/bsm/ginkgo/v2 v2.12.0 h1:Ny8MWAHyOepLGlLKYmXG4IEkioBysk6GpaRTLC8zwWs=
 github.com/bsm/ginkgo/v2 v2.12.0/go.mod h1:SwYbGRRDovPVboqFv0tPTcG1sN61LM1Z4ARdbAV9g4c=
 github.com/bsm/gomega v1.27.10 h1:yeMWxP2pV2fG3FgAODIY8EiRE3dy0aeFYt4l7wh6yKA=
 github.com/bsm/gomega v1.27.10/go.mod h1:JyEr/xRbxbtgWNi8tIEVPUYZ5Dzef52k01W3YH0H+O0=
 github.com/cespare/xxhash/v2 v2.3.0 h1:UL815xU9SqsFlibzuggzjXhog7bL6oX9BbNZnL2UFvs=
 github.com/cespare/xxhash/v2 v2.3.0/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
+github.com/cloudflare/circl v1.6.3 h1:9GPOhQGF9MCYUeXyMYlqTR6a5gTrgR/fBLXvUgtVcg8=
+github.com/cloudflare/circl v1.6.3/go.mod h1:2eXP6Qfat4O/Yhh8BznvKnJ+uzEoTQ6jVKJRn81BiS4=
 github.com/cpuguy83/go-md2man/v2 v2.0.6/go.mod h1:oOW0eioCTA6cOiMLiUPZOpcVxMig6NIQQ7OS05n1F4g=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
-github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc h1:U9qPSI2PIWSS1VwoXQT9A3Wy9MM3WgvqSxFWenqJduM=
+github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/decred/dcrd/crypto/blake256 v1.1.0 h1:zPMNGQCm0g4QTY27fOCorQW7EryeQ/U0x++OzVrdms8=
+github.com/decred/dcrd/crypto/blake256 v1.1.0/go.mod h1:2OfgNZ5wDpcsFmHmCK5gZTPcCXqlm2ArzUIkw9czNJo=
+github.com/decred/dcrd/dcrec/secp256k1/v4 v4.4.1 h1:5RVFMOWjMyRy8cARdy79nAmgYw3hK/4HUq48LQ6Wwqo=
+github.com/decred/dcrd/dcrec/secp256k1/v4 v4.4.1/go.mod h1:ZXNYxsqcloTdSy/rNShjYzMhyjf0LaoftYK0p+A3h40=
 github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f h1:lO4WD4F/rVNCu3HqELle0jiPLLBs70cWOduZpkS1E78=
 github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f/go.mod h1:cuUVRXasLTGF7a8hSLbxyZXjz+1KgoB3wDUb6vlszIc=
 github.com/dlclark/regexp2/v2 v2.2.1 h1:mf4KkFUj0gJuarK8P+LgiS+Lit7m9N1yAwEfPbee7R0=
@@ -36,14 +46,22 @@ github.com/gofiber/schema v1.7.1 h1:oSJBKdgP8JeIME4TQSAqlNKTU2iBB+2RNmKi8Nsc+TI=
 github.com/gofiber/schema v1.7.1/go.mod h1:A/X5Ffyru4p9eBdp99qu+nzviHzQiZ7odLT+TwxWhbk=
 github.com/gofiber/utils/v2 v2.0.4 h1:WwAxUA7L4MW2DjdEHF234lfqvBqd2vYYuBtA9TJq2ec=
 github.com/gofiber/utils/v2 v2.0.4/go.mod h1:GGERKU3Vhj5z6hS8YKvxL99A54DjOvTFZ0cjZnG4Lj4=
+github.com/golang-jwt/jwt/v5 v5.3.1 h1:kYf81DTWFe7t+1VvL7eS+jKFVWaUnK9cB1qbwn63YCY=
+github.com/golang-jwt/jwt/v5 v5.3.1/go.mod h1:fxCRLWMO43lRc8nhHWY6LGqRcf+1gQWArsqaEUEa5bE=
+github.com/google/go-cmp v0.7.0 h1:wk8382ETsv4JYUZwIsn6YpYiWiBsYLSJiTsyBybVuN8=
+github.com/google/go-cmp v0.7.0/go.mod h1:pXiqmnSA92OHEEa9HXL2W4E7lf9JzCmGVUdgjX3N/iU=
 github.com/google/pprof v0.0.0-20250317173921-a4b03ec1a45e h1:ijClszYn+mADRFY17kjQEVQ1XRhq2/JR1M3sGqeJoxs=
 github.com/google/pprof v0.0.0-20250317173921-a4b03ec1a45e/go.mod h1:boTsfXsheKC2y+lKOCMpSfarhxDeIzfZG1jqGcPl3cA=
 github.com/google/uuid v1.6.0 h1:NIvaJDMOsjHA8n1jAhLSgzrAzy1Hgr+hNrb57e+94F0=
 github.com/google/uuid v1.6.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
+github.com/gorilla/rpc v1.2.1 h1:yC+LMV5esttgpVvNORL/xX4jvTTEUE30UZhZ5JF7K9k=
+github.com/gorilla/rpc v1.2.1/go.mod h1:uNpOihAlF5xRFLuTYhfR0yfCTm0WTQSQttkMSptRfGk=
 github.com/hanzoai/dbx v1.16.0 h1:C8wsb9BIiit4nYnXizpcB4SyzVaepPkQFwq5i9fxAV0=
 github.com/hanzoai/dbx v1.16.0/go.mod h1:ynP6HSiDDoFZ8M3DC+XvSglBPFRygfTd/gjTWabh4yA=
 github.com/hanzoai/kv-go/v9 v9.18.0 h1:vO2SD8dV0+H9WWCVKV9KHaWZq4yeMsZruohrsZN9448=
 github.com/hanzoai/kv-go/v9 v9.18.0/go.mod h1:S+Li20E6Bskpw6r+c8WWhfi4hCr8SVV32qPXO0wdl+E=
+github.com/hanzoai/orm v0.6.1 h1:PELYVy+kTVuA7hqn1y3IQqR1Q5cTk008Wh4CLn9Isok=
+github.com/hanzoai/orm v0.6.1/go.mod h1:7tXULhLKymkAwlC+jASS66tlLEzU2sdCXX1sRFPoAFs=
 github.com/hanzoai/sqlite v0.2.1 h1:PqUty8+NhJsfwzT5K/U6vgFSIykM1vM0GMLeoH2KWio=
 github.com/hanzoai/sqlite v0.2.1/go.mod h1:SVhzKrbEovivr/sEaL/Wgw81a7Xfy6gSoOMzuRCvt7s=
 github.com/hashicorp/golang-lru/v2 v2.0.7 h1:a+bsQ5rvGLjzHuww6tVxozPZFVghXaHOwFs4luLUK2k=
@@ -58,24 +76,53 @@ github.com/jackc/pgx/v5 v5.9.2 h1:3ZhOzMWnR4yJ+RW1XImIPsD1aNSz4T4fyP7zlQb56hw=
 github.com/jackc/pgx/v5 v5.9.2/go.mod h1:mal1tBGAFfLHvZzaYh77YS/eC6IX9OWbRV1QIIM0Jn4=
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internal/applications/applications.go

@@ -0,0 +1,216 @@
+// Copyright 2026 Hanzo AI, Inc. All rights reserved.
+
+// Package applications is the Phase-1 typed CRUD surface for the `applications`
+// entity. Every operation is a zip typed handler (decode In -> run -> encode
+// Out) over hanzoai/orm and is owner-scoped by the (owner, name) natural key,
+// materialized as the orm id "<owner>/<name>". The same In/Out types back both
+// the REST route and the MCP tools/call projection zip derives from them, so
+// identity arguments travel in the typed request, not in ad-hoc path parsing.
+package applications
+
+import (
+	"context"
+	"errors"
+
+	"github.com/hanzoai/orm"
+	"github.com/zap-proto/zip"
+
+	"github.com/hanzoai/iam/internal/authz"
+	"github.com/hanzoai/iam/internal/schema"
+)
+
+// authorizeOrganization gates the Organization an application will SERVE (the
+// tenant a credential minted through it lands in), not just its registry Owner:
+// the op-invoke authz hook authorizes the top-level Owner, but Organization is a
+// separate field that a tenant admin could otherwise set to the reserved admin
+// org (a SuperAdmin-minting app) or to a victim tenant. On a gated HTTP request
+// the Guard attached a Principal; a non-super may point an app only at its OWN
+// org. A server-internal call (bootstrap/seed) carries no Principal and is
+// trusted, so an unauthenticated context is left to the surrounding trust
+// boundary rather than blocked here.
+func authorizeOrganization(ctx context.Context, in *schema.Application) error {
+	if in.Organization == "" {
+		return nil // an org-less app mints no cross-tenant/SuperAdmin identity
+	}
+	p, ok := authz.From(ctx)
+	if !ok {
+		return nil // server-internal (no principal) — trusted caller
+	}
+	if !authz.CanSetOrg(p, in.Organization) {
+		return zip.ErrForbidden("not authorized to set the application organization to " + in.Organization)
+	}
+	return nil
+}
+
+// appID is the owner-scoped natural key "<owner>/<name>" — the single source
+// of an application's orm id. Every handler routes through it so reads and
+// writes address the exact same row.
+func appID(owner, name string) string { return owner + "/" + name }
+
+// ApplicationRef identifies one application by its owner-scoped natural key.
+// It is the input for the get and delete operations.
+type ApplicationRef struct {
+	Owner string `json:"owner" validate:"required"`
+	Name  string `json:"name" validate:"required"`
+}
+
+// ApplicationQuery filters applications by owner for the list operation.
+type ApplicationQuery struct {
+	Owner string `json:"owner" validate:"required"`
+}
+
+// ApplicationListResult wraps the applications owned by one owner, newest
+// first.
+type ApplicationListResult struct {
+	Applications []*schema.Application `json:"applications"`
+}
+
+// DeleteResult reports the outcome of a delete operation.
+type DeleteResult struct {
+	Deleted bool `json:"deleted"`
+}
+
+// Route registers the applications CRUD surface on app, closing over db. Reads
+// use GET, create POST, update PUT, delete DELETE — every one a zip typed
+// handler.
+func Route(app *zip.App, db orm.DB) {
+	zip.Get(app, "/v1/iam/applications", listApplications(db),
+		zip.WithSummary("List applications for an owner"), zip.WithTags("applications"))
+	zip.Get(app, "/v1/iam/application", getApplication(db),
+		zip.WithSummary("Get one application by owner and name"), zip.WithTags("applications"))
+	zip.Post(app, "/v1/iam/application", Create(db),
+		zip.WithSummary("Create an application"), zip.WithTags("applications"))
+	zip.Put(app, "/v1/iam/application", Update(db),
+		zip.WithSummary("Update an application"), zip.WithTags("applications"))
+	zip.Delete(app, "/v1/iam/application", deleteApplication(db),
+		zip.WithSummary("Delete an application"), zip.WithTags("applications"))
+}
+
+// listApplications returns every application owned by in.Owner, ordered by
+// creation time descending.
+func listApplications(db orm.DB) zip.TypedHandler[ApplicationQuery, ApplicationListResult] {
+	return func(ctx context.Context, in *ApplicationQuery) (*ApplicationListResult, error) {
+		if in.Owner == "" {
+			return nil, zip.ErrBadRequest("owner is required")
+		}
+		apps, err := orm.TypedQuery[schema.Application](db).
+			Filter("Owner=", in.Owner).
+			Order("-CreatedTime").
+			GetAll(ctx)
+		if err != nil {
+			return nil, zip.ErrInternal(err.Error())
+		}
+		for i, app := range apps {
+			apps[i] = app.Mask() // never emit clientSecret in a list response
+		}
+		return &ApplicationListResult{Applications: apps}, nil
+	}
+}
+
+// getApplication returns the application at (in.Owner, in.Name).
+func getApplication(db orm.DB) zip.TypedHandler[ApplicationRef, schema.Application] {
+	return func(ctx context.Context, in *ApplicationRef) (*schema.Application, error) {
+		if in.Owner == "" || in.Name == "" {
+			return nil, zip.ErrBadRequest("owner and name are required")
+		}
+		id := appID(in.Owner, in.Name)
+		app, err := orm.Get[schema.Application](db, id)
+		if errors.Is(err, orm.ErrNotFound) {
+			return nil, zip.ErrNotFound("application not found: " + id)
+		}
+		if err != nil {
+			return nil, zip.ErrInternal(err.Error())
+		}
+		return app.Mask(), nil
+	}
+}
+
+// Create persists a new application under (in.Owner, in.Name), rejecting a
+// collision on that owner-scoped key. Exported so the Casdoor add-application
+// alias reuses this exact logic (no duplication); the REST route and the alias
+// share the one create path.
+func Create(db orm.DB) zip.TypedHandler[schema.Application, schema.Application] {
+	return func(ctx context.Context, in *schema.Application) (*schema.Application, error) {
+		if in.Owner == "" || in.Name == "" {
+			return nil, zip.ErrBadRequest("owner and name are required")
+		}
+		if err := authorizeOrganization(ctx, in); err != nil {
+			return nil, err
+		}
+		id := appID(in.Owner, in.Name)
+
+		// Owner-scoped uniqueness: (owner, name) must be free.
+		if _, err := orm.Get[schema.Application](db, id); err == nil {
+			return nil, zip.ErrConflict("application already exists: " + id)
+		} else if !errors.Is(err, orm.ErrNotFound) {
+			return nil, zip.ErrInternal(err.Error())
+		}
+
+		// Wire the decoded entity to db under its natural key and persist.
+		in.Init(db)
+		in.SetId(id)
+		if err := in.Create(); err != nil {
+			return nil, zip.ErrInternal(err.Error())
+		}
+		return in.Mask(), nil
+	}
+}
+
+// Update overwrites the application at (in.Owner, in.Name), preserving its
+// immutable creation metadata. The (owner, name) identity is fixed by the record,
+// not editable through the body. Exported so the Casdoor update-application alias
+// reuses this exact logic (no duplication).
+func Update(db orm.DB) zip.TypedHandler[schema.Application, schema.Application] {
+	return func(ctx context.Context, in *schema.Application) (*schema.Application, error) {
+		if in.Owner == "" || in.Name == "" {
+			return nil, zip.ErrBadRequest("owner and name are required")
+		}
+		if err := authorizeOrganization(ctx, in); err != nil {
+			return nil, err
+		}
+		id := appID(in.Owner, in.Name)
+
+		existing, err := orm.Get[schema.Application](db, id)
+		if errors.Is(err, orm.ErrNotFound) {
+			return nil, zip.ErrNotFound("application not found: " + id)
+		}
+		if err != nil {
+			return nil, zip.ErrInternal(err.Error())
+		}
+
+		in.Init(db)
+		in.SetId(id)
+		in.CreatedTime = existing.CreatedTime
+		in.CreatedAt = existing.CreatedAt
+		if err := in.Update(); err != nil {
+			return nil, zip.ErrInternal(err.Error())
+		}
+		return in.Mask(), nil
+	}
+}
+
+// deleteApplication removes the application at (in.Owner, in.Name).
+// Delete exposes the delete handler so the Casdoor `delete-application` verb alias
+// (internal/compat) can reuse it — one delete path, wrapped in the compat envelope.
+func Delete(db orm.DB) zip.TypedHandler[ApplicationRef, DeleteResult] { return deleteApplication(db) }
+
+func deleteApplication(db orm.DB) zip.TypedHandler[ApplicationRef, DeleteResult] {
+	return func(ctx context.Context, in *ApplicationRef) (*DeleteResult, error) {
+		if in.Owner == "" || in.Name == "" {
+			return nil, zip.ErrBadRequest("owner and name are required")
+		}
+		id := appID(in.Owner, in.Name)
+
+		app, err := orm.Get[schema.Application](db, id)
+		if errors.Is(err, orm.ErrNotFound) {
+			return nil, zip.ErrNotFound("application not found: " + id)
+		}
+		if err != nil {
+			return nil, zip.ErrInternal(err.Error())
+		}
+		if err := app.Delete(); err != nil {
+			return nil, zip.ErrInternal(err.Error())
+		}
+		return &DeleteResult{Deleted: true}, nil
+	}
+}

internal/auditlogs/auditlogs.go

@@ -0,0 +1,192 @@
+// Copyright 2026 Hanzo AI, Inc. All rights reserved.
+
+// Package auditlogs serves the IAM v2 CRUD surface for the `audit_logs` entity:
+// an append-only action record owner-scoped by (owner, name). Every operation
+// is a typed zip handler over hanzoai/orm; the orm string key is "owner/name".
+// Reads scope to one owner (organization); writes address one log by its
+// (owner, name) key. Rows are written once at request time — the update path
+// exists only for administrative correction, never for normal operation.
+package auditlogs
+
+import (
+	"context"
+	"errors"
+	"time"
+
+	"github.com/hanzoai/orm"
+	"github.com/zap-proto/zip"
+
+	"github.com/hanzoai/iam/internal/schema"
+)
+
+// Handler binds the audit-log operations to one orm store.
+type Handler struct {
+	db orm.DB
+}
+
+// Route registers the audit-log CRUD routes on app against db.
+func Route(app *zip.App, db orm.DB) {
+	h := &Handler{db: db}
+	zip.Get(app, "/v1/iam/audit-logs", h.List, zip.WithSummary("List audit logs for an owner"), zip.WithTags("audit-logs"))
+	zip.Post(app, "/v1/iam/audit-logs", h.Create, zip.WithSummary("Create an audit log"), zip.WithTags("audit-logs"))
+	zip.Post(app, "/v1/iam/audit-logs/get", h.Get, zip.WithSummary("Get one audit log"), zip.WithTags("audit-logs"))
+	zip.Post(app, "/v1/iam/audit-logs/update", h.Update, zip.WithSummary("Update an audit log"), zip.WithTags("audit-logs"))
+	zip.Post(app, "/v1/iam/audit-logs/delete", h.Delete, zip.WithSummary("Delete an audit log"), zip.WithTags("audit-logs"))
+}
+
+// Ref addresses one audit log by its owner-scoped natural key.
+type Ref struct {
+	Owner string `json:"owner"`
+	Name  string `json:"name"`
+}
+
+// Input is the writable projection of an audit log (the v1 add/update-record
+// body). It keeps the wire contract clean of the orm.Model bookkeeping fields
+// and of the v1 integer surrogate id, which the orm string key supersedes.
+type Input struct {
+	Owner        string `json:"owner"`
+	Name         string `json:"name"`
+	CreatedTime  string `json:"createdTime"`
+	Organization string `json:"organization"`
+	ClientIp     string `json:"clientIp"`
+	User         string `json:"user"`
+	Method       string `json:"method"`
+	RequestUri   string `json:"requestUri"`
+	Action       string `json:"action"`
+	Language     string `json:"language"`
+	Object       string `json:"object"`
+	Response     string `json:"response"`
+	StatusCode   int    `json:"statusCode"`
+	IsTriggered  bool   `json:"isTriggered"`
+}
+
+// ListInput scopes a listing to one owner (organization).
+type ListInput struct {
+	Owner string `json:"owner"`
+}
+
+// ListOutput is the owner-scoped page of audit logs, newest first.
+type ListOutput struct {
+	AuditLogs []*schema.AuditLog `json:"auditLogs"`
+	Total     int                `json:"total"`
+}
+
+// DeleteOutput reports the delete result.
+type DeleteOutput struct {
+	Deleted bool `json:"deleted"`
+}
+
+// key builds the orm string key from the (owner, name) natural key.
+func key(owner, name string) string { return owner + "/" + name }
+
+// apply copies the mutable domain fields of an Input onto an audit log. The
+// identity fields (owner, name) and the created stamp are set only on Create,
+// never overwritten by an update.
+func apply(dst *schema.AuditLog, in *Input) {
+	dst.Organization = in.Organization
+	dst.ClientIp = in.ClientIp
+	dst.User = in.User
+	dst.Method = in.Method
+	dst.RequestUri = in.RequestUri
+	dst.Action = in.Action
+	dst.Language = in.Language
+	dst.Object = in.Object
+	dst.Response = in.Response
+	dst.StatusCode = in.StatusCode
+	dst.IsTriggered = in.IsTriggered
+}
+
+// List returns the audit logs for one owner, newest first. An empty owner lists
+// every log (the unscoped admin view).
+func (h *Handler) List(ctx context.Context, in *ListInput) (*ListOutput, error) {
+	q := orm.TypedQuery[schema.AuditLog](h.db)
+	if in.Owner != "" {
+		q = q.Filter("owner", in.Owner)
+	}
+	logs, err := q.Order("-createdTime").GetAll(ctx)
+	if err != nil {
+		return nil, zip.ErrInternal(err.Error())
+	}
+	return &ListOutput{AuditLogs: logs, Total: len(logs)}, nil
+}
+
+// Get returns one audit log addressed by (owner, name).
+func (h *Handler) Get(ctx context.Context, in *Ref) (*schema.AuditLog, error) {
+	if in.Owner == "" || in.Name == "" {
+		return nil, zip.ErrBadRequest("owner and name are required")
+	}
+	log, err := orm.Get[schema.AuditLog](h.db, key(in.Owner, in.Name))
+	if err != nil {
+		return nil, mapErr(err)
+	}
+	return log, nil
+}
+
+// Create persists a new audit log. It rejects a duplicate (owner, name).
+func (h *Handler) Create(ctx context.Context, in *Input) (*schema.AuditLog, error) {
+	if in.Owner == "" || in.Name == "" {
+		return nil, zip.ErrBadRequest("owner and name are required")
+	}
+	switch _, err := orm.Get[schema.AuditLog](h.db, key(in.Owner, in.Name)); {
+	case err == nil:
+		return nil, zip.ErrConflict("audit log already exists")
+	case !errors.Is(err, orm.ErrNotFound):
+		return nil, zip.ErrInternal(err.Error())
+	}
+
+	log := orm.New[schema.AuditLog](h.db)
+	log.Owner = in.Owner
+	log.Name = in.Name
+	log.CreatedTime = in.CreatedTime
+	if log.CreatedTime == "" {
+		log.CreatedTime = time.Now().UTC().Format(time.RFC3339)
+	}
+	apply(log, in)
+	log.SetId(key(in.Owner, in.Name))
+
+	if err := log.CreateCtx(ctx); err != nil {
+		return nil, zip.ErrInternal(err.Error())
+	}
+	return log, nil
+}
+
+// Update mutates an existing audit log in place. Identity and created stamp are
+// immutable; a missing log is a 404. Audit rows are append-only in normal
+// operation — this path is for administrative correction only.
+func (h *Handler) Update(ctx context.Context, in *Input) (*schema.AuditLog, error) {
+	if in.Owner == "" || in.Name == "" {
+		return nil, zip.ErrBadRequest("owner and name are required")
+	}
+	log, err := orm.Get[schema.AuditLog](h.db, key(in.Owner, in.Name))
+	if err != nil {
+		return nil, mapErr(err)
+	}
+	apply(log, in)
+	if err := log.UpdateCtx(ctx); err != nil {
+		return nil, zip.ErrInternal(err.Error())
+	}
+	return log, nil
+}
+
+// Delete removes one audit log addressed by (owner, name).
+func (h *Handler) Delete(ctx context.Context, in *Ref) (*DeleteOutput, error) {
+	if in.Owner == "" || in.Name == "" {
+		return nil, zip.ErrBadRequest("owner and name are required")
+	}
+	log, err := orm.Get[schema.AuditLog](h.db, key(in.Owner, in.Name))
+	if err != nil {
+		return nil, mapErr(err)
+	}
+	if err := log.DeleteCtx(ctx); err != nil {
+		return nil, zip.ErrInternal(err.Error())
+	}
+	return &DeleteOutput{Deleted: true}, nil
+}
+
+// mapErr translates an orm lookup error into the matching HTTP status.
+func mapErr(err error) error {
+	if errors.Is(err, orm.ErrNotFound) {
+		return zip.ErrNotFound("audit log not found")
+	}
+	return zip.ErrInternal(err.Error())
+}

internal/authz/authz.go

@@ -0,0 +1,489 @@
+// Copyright 2026 Hanzo AI, Inc. All rights reserved.
+
+// Package authz is the IAM v2 authorization seam in front of the Phase-1 entity
+// CRUD, which is otherwise unauthenticated — the door an attacker would walk
+// through to overwrite an admin-owned signing cert and forge tokens. It is two
+// orthogonal decisions, never braided:
+//
+//   - AUTHENTICATION — the Guard middleware, mounted ONCE via app.Use, AFTER the
+//     public group and BEFORE the authed routes. Public (pre-authentication)
+//     routes are registered first, so a matched one terminates fiber's middleware
+//     walk and the Guard never runs on it — public vs gated is structural (which
+//     group a route is on), not an allow-list. Every request the Guard wraps must
+//     carry a verified bearer; the resolved Principal is attached to the request
+//     context for the authorization decision and audit. Fails closed (401).
+//
+//   - AUTHORIZATION — the Authorize hook, installed ONCE via app.Authorize. It
+//     runs at the framework's op-invoke seam, on the DECODED typed input the
+//     handler will act on, for REST and MCP alike. The value it authorizes is by
+//     construction the value the handler binds: there is no second parse of the
+//     body for it to diverge from. Fails closed (403).
+//
+// Splitting the two removes the defect a single body-reparsing middleware had:
+// authorizing a target extracted from the raw bytes divergently from where the
+// handler binds it. A write's target now comes from the one decode the handler
+// itself runs on. A read's target rides in the query string (a GET has no body
+// for the op seam to decode), so the Guard authorizes reads there; a read invoked
+// over MCP DOES decode a target into its input, and the op seam authorizes that.
+//
+// Three scopes, never conflated (conflation is privilege escalation):
+//
+//   - SuperAdmin — the principal's organization is the reserved "admin" org.
+//     The ONLY cross-tenant scope. Required for every write to a platform-owned
+//     (admin/built-in) resource: the signing-cert poisoning gate, admin-scoped
+//     application/provider registration, every reserved surface.
+//   - Org admin — IsAdmin, scoped to its OWN organization. Manages every
+//     resource its org owns; never another org's, never a platform-owned one.
+//   - Regular user — self-service only: reading its own user record.
+//
+// One predicate governs SuperAdmin everywhere: the principal's organization is
+// "admin". That organization comes from the token SUBJECT — the authenticated
+// principal's own owner/name — never from the token's `owner`/`organization`
+// claims. Those name the APPLICATION's org and diverge from the user's org for a
+// shared app, so trusting them would let a tenant user sign in through a shared
+// admin-org app and read as SuperAdmin. Authenticity, expiry, algorithm, and
+// signing-key trust are delegated to the same oidc.VerifyToken every protected
+// route already uses; the org-admin flag comes from the loaded user record, the
+// authoritative source (it is not a token claim).
+package authz
+
+import (
+	"context"
+	"crypto/subtle"
+	"errors"
+	"reflect"
+	"strings"
+
+	"github.com/hanzoai/orm"
+	"github.com/zap-proto/zip"
+
+	"github.com/hanzoai/iam/internal/httpx"
+	"github.com/hanzoai/iam/internal/oidc"
+	"github.com/hanzoai/iam/internal/store"
+)
+
+// adminOrg is the reserved organization whose membership IS SuperAdmin — the one
+// cross-tenant scope, the one predicate. The broader reserved-owner set
+// {admin, built-in} the poisoning gate protects lives in ONE place,
+// store.IsSigningCertOwner, shared with the token verifier and the JWKS.
+const adminOrg = "admin"
+
+// Principal is the identity a gated request acts as, resolved from a verified
+// bearer. Org is the tenant (the authenticated principal's own org, from the
+// subject); User is its name within that org (empty for a machine token); Admin
+// is the org-admin flag; Super is the SuperAdmin predicate (Org == adminOrg).
+type Principal struct {
+	Org  string
+	User string
+	// App is the application NAME when the request authenticated as a confidential
+	// client (client_secret_basic), and "" for every human. An app principal is
+	// never Admin and never Super — its whole authority is its capability allowlist
+	// (cap.go), so a leaked client credential can neither read another tenant nor
+	// touch signing material.
+	App   string
+	Admin bool
+	Super bool
+}
+
+type ctxKey struct{}
+
+// From returns the Principal the Guard attached to ctx for a gated request, and
+// whether one is present (public routes carry none).
+func From(ctx context.Context) (*Principal, bool) {
+	p, ok := ctx.Value(ctxKey{}).(*Principal)
+	return p, ok
+}
+
+// Scope resolves the owner a listing is bound to: a SuperAdmin lists the owner
+// it asks for (empty = every tenant), anyone else lists only its own org. The
+// org comes from the verified bearer, so a request parameter can never widen a
+// read beyond the caller's authority — the one value authorized is the one value
+// queried. Every owner-scoped lister resolves its owner here.
+func Scope(ctx context.Context, owner string) (string, error) {
+	p, ok := From(ctx)
+	if !ok {
+		return "", zip.ErrForbidden("no principal")
+	}
+	if p.Super {
+		return owner, nil
+	}
+	return p.Org, nil
+}
+
+// Can reports whether the ctx principal may perform `method` on the entity's
+// (owner, name) — the SAME policy the op-invoke seam (Authorize) applies, exposed
+// for a RAW handler that does not pass through app.Authorize (e.g. SCIM, whose
+// writes call the CRUD directly). Owner-pinning via Scope alone is NOT sufficient
+// for a write: it enforces tenant isolation but not the admin/self clause, so a
+// raw handler MUST call this. Fails closed when no principal is present.
+func Can(ctx context.Context, method, entity, owner, name string) bool {
+	p, ok := From(ctx)
+	if !ok {
+		return false
+	}
+	return authorize(p, method, entity, owner, name)
+}
+
+// IsSuper reports whether the ctx principal is a SuperAdmin — used by a raw
+// handler to gate a privileged field (e.g. provision-don't-promote: only a super
+// may set isAdmin). Fails closed when no principal is present.
+func IsSuper(ctx context.Context) bool {
+	p, ok := From(ctx)
+	return ok && p.Super
+}
+
+// CanSetOrg reports whether principal p may point a resource at organization
+// `org` — the tenant an application SERVES (the org every credential minted
+// through that app lands in), authorized EXACTLY as an owner target through the
+// one policy: a SuperAdmin may set any org; anyone else only their OWN org, never
+// a reserved platform org (admin/built-in — the SuperAdmin/signing vector) nor
+// another tenant (cross-tenant mint). It is the gate the application create/update
+// path applies to the Organization FIELD — closing the hole where authorizing only
+// the top-level Owner let a tenant admin register an app whose Organization named
+// the admin org (SuperAdmin) or a victim tenant. Fails closed on a nil principal.
+func CanSetOrg(p *Principal, org string) bool {
+	if p == nil {
+		return false
+	}
+	return authorize(p, "POST", "applications", org, "")
+}
+
+// Optional resolves the Principal a PUBLIC route's caller happens to carry, or
+// nil when the request is anonymous or its bearer does not verify. The Guard
+// admits a public path WITHOUT resolving a principal (a browser must reach the
+// pre-auth surface before it holds a token), so From() is empty there — a public
+// handler that legitimately honors an authenticated caller resolves it here.
+//
+// It is the same fail-closed resolution every gated route runs (one verifier,
+// one user load, one revocation check); only the outcome differs — a bad bearer
+// is nil rather than a 401, because the caller's flow continues anonymously.
+// A handler must therefore treat a nil Principal as "anonymous", never as an
+// error, and must never widen authority on the strength of this alone: it proves
+// only WHO the caller is, not that the caller INTENDED this request (the wallet
+// link branch pairs it with a same-site check for exactly that reason).
+func Optional(c *zip.Ctx, db orm.DB) *Principal {
+	p, err := principal(c, db)
+	if err != nil {
+		return nil
+	}
+	return p
+}
+
+// Fail-closed reasons. The Guard collapses all of them to one opaque 401 so a
+// prober cannot tell a bad signature from an expired token from a revoked user.
+var (
+	errNoBearer  = errors.New("authz: no bearer")
+	errNoSubject = errors.New("authz: token subject carries no org")
+	errRevoked   = errors.New("authz: principal is forbidden or deleted")
+)
+
+// isRead reports whether a method addresses its target through the query string
+// rather than a body: a GET (or HEAD) has no body for the op-invoke seam to
+// decode, so its target is authorized in the Guard. Every other method carries a
+// body decoded once by the op and is authorized at that seam.
+func isRead(method string) bool { return method == "GET" || method == "HEAD" }
+
+// ReadTarget extracts the (owner, name) a GET addresses, from the query string.
+// A native typed read files them as `?owner=&name=`; the Casdoor compat verbs
+// (get-user, get-organization, …) file them as `?id=<owner>/<name>`. Explicit
+// owner/name win; the id split is a fallback only when owner is absent, so this
+// can only make an id-based read's authorization MORE precise than the empty
+// target it resolves to today (which fail-closed denies every non-super). It
+// never widens: the tenant rule still pins owner to the principal's org, and the
+// handler independently re-scopes the query owner through Scope, so a request
+// that spells one owner in `?owner` and another in `?id` cannot read across
+// tenants — the authorized owner and the queried owner are both pinned.
+//
+// It is exported so the compat read aliases resolve their target through the
+// SAME function the Guard authorizes with: one extraction, so a handler can
+// never address a row the Guard did not authorize.
+func ReadTarget(c *zip.Ctx) (owner, name string) {
+	owner, name = c.Query("owner"), c.Query("name")
+	if owner == "" {
+		if o, n, ok := strings.Cut(c.Query("id"), "/"); ok && o != "" {
+			return o, n
+		}
+	}
+	return owner, name
+}
+
+// handlerAuthorizedPrefixes are path subtrees whose target rides in the PATH, not
+// the query — the Guard authenticates them (a bearer is still required) but does
+// NOT pre-authorize the read; the handler authorizes on the path id via
+// authz.Scope. SCIM (RFC 7644, /v1/iam/scim/v2/Users/{id}) is path-targeted, so it
+// belongs here. This is the read analogue of a write deferring to the op-invoke
+// seam — the target is authorized where it is bound, not guessed from the query.
+// get-organization-projects is the one Casdoor read verb whose target rides in
+// ?organization= (the ScopeSwitcher's project list), not ?owner=/?id=/the path,
+// so the Guard cannot pre-authorize it generically; the handler scopes it through
+// authz.Scope instead (the read analogue of SCIM's path-targeted authorization).
+var handlerAuthorizedPrefixes = []string{"/v1/iam/scim/", "/v1/iam/get-organization-projects", "/v1/iam/service-accounts", "/v1/iam/memberships"}
+
+// pathAuthorized reports whether path is under a handler-authorized subtree.
+func pathAuthorized(path string) bool {
+	for _, p := range handlerAuthorizedPrefixes {
+		if strings.HasPrefix(path, p) {
+			return true
+		}
+	}
+	return false
+}
+
+// Guard is the AUTHENTICATION middleware. Mount it via app.Use AFTER the public
+// group and BEFORE the authed routes: the public (pre-authentication) routes are
+// registered first, so a matched public route terminates fiber's middleware walk
+// and the Guard never runs on it — public vs gated is decided structurally, by
+// which group a route is registered on, not by an allow-list. Every route the
+// Guard does wrap — the typed CRUD handlers and the framework's /mcp and /openapi
+// surfaces alike — requires a valid bearer (401 otherwise) whose Principal is
+// attached to the request context for the authorization hook downstream. A read's
+// authorization target rides in the query string, so reads are authorized here; a
+// write's rides in the body, decoded once by the op and authorized at the op-invoke
+// seam (Authorize) on that exact decoded value — this middleware never re-parses a
+// write body, which is what let the old target extraction diverge from execution.
+func Guard(db orm.DB) zip.Handler {
+	return func(c *zip.Ctx) error {
+		p, err := principal(c, db)
+		if err != nil {
+			return zip.ErrUnauthorized("authentication required")
+		}
+		// A path-targeted resource (SCIM: /Users/{id}) carries its target in the
+		// PATH, not the query — so, like a write whose target rides in the body, the
+		// Guard authenticates (bearer required, principal attached) and the handler
+		// authorizes via authz.Scope on the path id. The Guard never authorizes an
+		// empty query target for these (which would fail-closed deny every non-super
+		// before the handler could scope). Every other read is authorized here.
+		if !pathAuthorized(c.Path()) {
+			rOwner, rName := ReadTarget(c)
+			if isRead(c.Method()) && !authorize(p, c.Method(), entityOf(c.Path()), rOwner, rName) {
+				return zip.ErrForbidden("forbidden")
+			}
+		}
+		c.SetContext(context.WithValue(c.Context(), ctxKey{}, p))
+		return c.Continue()
+	}
+}
+
+// Authorize is the AUTHORIZATION hook, installed via app.Authorize so the
+// framework runs it at every typed op's invoke seam — after the request is
+// decoded into its typed In and validated, before the handler runs, for REST and
+// MCP alike. It authorizes the DECODED target: the exact (owner, name) the
+// handler will bind, read from the same struct the handler runs on, so the value
+// authorized cannot diverge from the value written.
+//
+// A REST read carries its target in the query string, not the body, so its
+// decoded In is empty and the Guard already authorized it there — such a call is
+// admitted here (owner == ""). Every write, and any read invoked over MCP (whose
+// arguments DO decode a target into In), is authorized against authorize().
+//
+// Every typed op is authed by construction — the public surface is raw handlers
+// in the pre-Guard group, none of which is a typed op — so this hook needs no
+// public bypass: whenever it runs, the Guard has already run and attached a
+// principal (over REST, before the op; over MCP, on the gated /mcp route).
+func Authorize(ctx context.Context, op zip.Op, in any) error {
+	owner, name := decodedTarget(in)
+	if owner == "" && isRead(op.Method) {
+		return nil // REST read: target rode in the query, authorized by the Guard
+	}
+	p, present := From(ctx)
+	if !present {
+		return zip.ErrForbidden("forbidden") // gated op with no principal: fail closed
+	}
+	if !authorize(p, op.Method, entityOf(op.Path), owner, name) {
+		return zip.ErrForbidden("forbidden")
+	}
+	return nil
+}
+
+// authorize is the pure authorization decision: may p act on a resource owned by
+// `owner` (named `name`) on the given entity? The order IS the policy:
+//
+//  1. SuperAdmin may do anything — the only cross-tenant scope.
+//  2. A platform-owned resource (admin/built-in — the reserved owners the token
+//     verifier trusts to sign) is writable only by a SuperAdmin. This single
+//     rule is the signing-cert poisoning gate, the admin-scoped app/provider
+//     registration gate, AND the built-in-org gap, all at once: a built-in-org
+//     principal is not SuperAdmin (that is admin only), so it cannot write a
+//     built-in-owned signing cert either.
+//  3. Tenant isolation: a normal principal may act only within its OWN org. An
+//     empty or foreign owner is refused — the target org is bound to the
+//     principal, never trusted from the request.
+//  4. Inside its own org, an org admin manages everything; a regular user may
+//     only READ its own user record (self-service). The users entity serves
+//     reads as GET and writes as POST, so gating the self clause to GET keeps a
+//     regular user from writing its own record — a raw entity write would
+//     otherwise let it carry isAdmin and self-promote. Privileged self-mutation
+//     is the Phase-5 provision-don't-promote concern; here it is closed by
+//     denial.
+func authorize(p *Principal, method, entity, owner, name string) bool {
+	if p.Super {
+		return true
+	}
+	if store.IsSigningCertOwner(owner) {
+		// The ONE exception to the reserved-owner gate is the tenant registry: every
+		// organization row is filed under the admin owner, but an org row is the
+		// TENANT'S own record, not platform trust material — a tenant reads its own
+		// org, its admin edits it, and an org-admin-capable confidential client
+		// manages orgs during onboarding (v1 requireAppCapability(CapOrgAdmin)).
+		// Certs, applications, providers, and users under a reserved owner stay
+		// SuperAdmin-only.
+		if entity != "organizations" {
+			return false
+		}
+		if p.App != "" {
+			return Allowed(p, CapOrgAdmin)
+		}
+		return name == p.Org && (isRead(method) || p.Admin)
+	}
+	// A confidential client's authority is its capability allowlist and nothing
+	// else — never Super, never Admin; an unmapped entity or unset allowlist denies.
+	if p.App != "" {
+		return Allowed(p, capFor(entity))
+	}
+	if owner == "" || owner != p.Org {
+		return false
+	}
+	if p.Admin {
+		return true
+	}
+	return method == "GET" && entity == "users" && name != "" && name == p.User
+}
+
+// owned is implemented by a typed input whose authorization target is NOT its
+// top-level Owner/Name. The user create/update body nests the record under
+// `user`, so its owner is in.User.Owner, not a top-level field; its AuthzTarget
+// returns exactly what the handler binds — the handler calls the same method — so
+// the value authorized is by construction the value written. Any future input
+// that nests its owner implements this too: it is the ONE contract for nesting,
+// so the seam never guesses which field the handler uses and never mistakes a
+// read-only enrichment sub-struct (e.g. an application's resolved certObj, which
+// carries its OWN owner) for the target.
+type owned interface {
+	AuthzTarget() (owner, name string)
+}
+
+// decodedTarget returns the (owner, name) a decoded request addresses — exactly
+// the values the handler will bind, read from the SAME decoded struct the handler
+// runs on, so there is no second parse to diverge from. An input that nests its
+// owner declares it via owned; every other input files its owner at the top level
+// (directly, or promoted from an embedded record), read reflectively so no entity
+// needs bespoke wiring and an attacker-supplied nested sub-struct is never a
+// target.
+func decodedTarget(in any) (owner, name string) {
+	if o, ok := in.(owned); ok {
+		return o.AuthzTarget()
+	}
+	v := reflect.ValueOf(in)
+	for v.Kind() == reflect.Pointer {
+		if v.IsNil() {
+			return "", ""
+		}
+		v = v.Elem()
+	}
+	if v.Kind() != reflect.Struct {
+		return "", ""
+	}
+	return stringField(v, "Owner"), stringField(v, "Name")
+}
+
+// stringField returns the string value of the named field (traversing embedded
+// anonymous fields via FieldByName), or "" when the field is absent or not a
+// string. FieldByName does not descend named sub-fields, so it reads the record's
+// own owner, never one nested under an unrelated field.
+func stringField(v reflect.Value, name string) string {
+	f := v.FieldByName(name)
+	if f.IsValid() && f.Kind() == reflect.String {
+		return f.String()
+	}
+	return ""
+}
+
+// principal resolves the verified bearer into a Principal, failing closed on a
+// missing/malformed/expired/wrong-key token (oidc.VerifyToken enforces the
+// algorithm allowlist and trusted signing-cert resolution), a subject with no
+// org, a store error, or a forbidden/deleted user. Org, Admin, and Super are
+// read from the LOADED user record — authoritative — never from the token
+// claims: SuperAdmin is a real, live member of the admin org, not a subject that
+// merely names one. A subject with no user row (a client_credentials machine
+// token, or a since-deleted user) authenticates but carries no admin or
+// SuperAdmin authority and no self-service identity — org-scoped only, which on
+// the raw CRUD authorizes to nothing until a later phase grants machine
+// identities explicit scope. This closes the phantom-admin subject: a token for
+// "admin/<nobody>" resolves to no authority, not SuperAdmin.
+func principal(c *zip.Ctx, db orm.DB) (*Principal, error) {
+	if p, ok := app(c, db); ok {
+		return p, nil
+	}
+	bearer := httpx.Bearer(c)
+	if bearer == "" {
+		return nil, errNoBearer
+	}
+	ctx := c.Context()
+	claims, err := oidc.VerifyToken(ctx, db, bearer)
+	if err != nil {
+		return nil, err
+	}
+	// The subject is "<owner>/<name>": the principal's OWN org and name, set
+	// server-side at mint and signed. Never the `owner` claim (the app's org).
+	owner, name, _ := strings.Cut(claims.Subject, "/")
+	if owner == "" {
+		return nil, errNoSubject
+	}
+	u, err := store.GetUserByName(ctx, db, owner, name)
+	if err != nil {
+		return nil, err // fail closed: cannot establish the principal
+	}
+	if u != nil {
+		if u.IsForbidden || u.IsDeleted {
+			return nil, errRevoked
+		}
+		return &Principal{Org: u.Owner, User: u.Name, Admin: u.IsAdmin, Super: u.Owner == adminOrg}, nil
+	}
+	return &Principal{Org: owner}, nil
+}
+
+// app resolves an `Authorization: Basic <clientId>:<clientSecret>` credential into
+// a confidential-client Principal — the transport every live server-side consumer
+// authenticates with (RFC 6749 §2.3.1 client_secret_basic; cloud reads
+// IAM_MINT_CLIENT_ID/SECRET and sends exactly this). The application NAME is the
+// identity, because the capability allowlists key on the name.
+//
+// It is deliberately NOT an authority: the returned Principal is never Admin and
+// never Super, so the ONLY thing it can do is what its name is allowlisted for
+// (authorize → Allowed). This is what keeps the v1 "every confidential client is a
+// global admin" hole closed as the transport is re-added.
+//
+// Fail-closed: an unparseable header, an unknown clientId, an application with no
+// registered secret, an empty presented secret (a public client must never
+// authenticate as an app), or a mismatch all report false — the caller then finds
+// no bearer either and answers 401. The comparison is constant-time.
+func app(c *zip.Ctx, db orm.DB) (*Principal, bool) {
+	id, secret, ok := httpx.Basic(c)
+	if !ok || id == "" || secret == "" {
+		return nil, false
+	}
+	a, err := store.GetApplicationByClientId(c.Context(), db, id)
+	if err != nil || a == nil || a.ClientSecret == "" {
+		return nil, false
+	}
+	if subtle.ConstantTimeCompare([]byte(a.ClientSecret), []byte(secret)) != 1 {
+		return nil, false
+	}
+	return &Principal{App: a.Name, Org: a.Organization}, true
+}
+
+// entityOf returns the resource segment of an /v1/iam/<entity>[/verb] path, or
+// "" for anything else (e.g. /mcp). Only the users entity needs distinguishing —
+// its regular-user self-service rule — so every other segment is treated
+// uniformly by the tenant rule.
+func entityOf(path string) string {
+	const p = "/v1/iam/"
+	if !strings.HasPrefix(path, p) {
+		return ""
+	}
+	rest := path[len(p):]
+	if i := strings.IndexByte(rest, '/'); i >= 0 {
+		return rest[:i]
+	}
+	return rest
+}

internal/authz/authz_cap_test.go

@@ -0,0 +1,112 @@
+// Copyright 2026 Hanzo AI, Inc. All rights reserved.
+
+package authz
+
+import "testing"
+
+// The confidential-client authorization policy: an app principal's ENTIRE
+// authority is its capability allowlist — never Super, never Admin, never a
+// tenant. This is the v1 "every client credential is a global admin" hole, held
+// closed. authorize() IS the decision; this table is its truth for app principals.
+func TestAuthorizeAppCapabilities(t *testing.T) {
+	// The allowlists reserve each capability to a named admin-owned app.
+	t.Setenv("IAM_USER_ADMIN_APPS", "hanzo-console")
+	t.Setenv("IAM_ORG_ADMIN_APPS", "hanzo-console")
+	t.Setenv("IAM_KEY_MINT_ALLOWED_APPS", "hanzo-team")
+	t.Setenv("IAM_SA_LIST_ALLOWED_APPS", "hanzo-reader")
+
+	console := &Principal{App: "hanzo-console", Org: "admin"} // user+org admin caps
+	nobody := &Principal{App: "rogue-app", Org: "hanzo"}      // in no allowlist
+
+	cases := []struct {
+		name   string
+		p      *Principal
+		method string
+		entity string
+		owner  string
+		name2  string
+		want   bool
+	}{
+		// A capability-holding app may act on its mapped entity — cross-tenant by
+		// design (a platform console onboards any customer org).
+		{"console writes users in any org", console, "POST", "users", "orgb", "x", true},
+		{"console writes org (reserved-owner exception)", console, "POST", "organizations", "admin", "hanzo", true},
+		{"console reads org", console, "GET", "organizations", "admin", "hanzo", true},
+
+		// An app NEVER reaches signing material or unmapped entities, allowlisted
+		// or not — capFor has no mapping, so the allowlist is vacuously empty.
+		{"console -> certs denied", console, "POST", "certs", "admin", "k", false},
+		{"console -> providers denied", console, "POST", "providers", "hanzo", "p", false},
+		{"console -> tokens denied", console, "POST", "tokens", "hanzo", "t", false},
+
+		// An app in NO allowlist holds nothing — a leaked credential is inert.
+		{"rogue -> users denied", nobody, "POST", "users", "hanzo", "x", false},
+		{"rogue -> orgs denied", nobody, "POST", "organizations", "admin", "hanzo", false},
+		{"rogue -> own-org users denied", nobody, "POST", "users", "hanzo", "x", false},
+
+		// A user under a reserved owner is NEVER writable by an app — provision,
+		// never promote (no capability moves a user into the admin org).
+		{"console -> admin-org user denied", console, "POST", "users", "admin", "x", false},
+		{"console -> built-in user denied", console, "POST", "users", "built-in", "x", false},
+	}
+	for _, c := range cases {
+		t.Run(c.name, func(t *testing.T) {
+			if got := authorize(c.p, c.method, c.entity, c.owner, c.name2); got != c.want {
+				t.Fatalf("authorize(App=%q,%s,%s,%s/%s) = %v, want %v",
+					c.p.App, c.method, c.entity, c.owner, c.name2, got, c.want)
+			}
+		})
+	}
+
+	// An app principal is structurally never Super/Admin, so it can never take the
+	// human privileged paths even if a future bug set the flags.
+	if console.Super || console.Admin {
+		t.Fatal("an app principal must never carry Super/Admin")
+	}
+}
+
+// The capability primitives, fail-secure to the letter.
+func TestCapabilityPrimitives(t *testing.T) {
+	t.Setenv("IAM_ORG_ADMIN_APPS", "hanzo-console, brand-console")
+
+	t.Run("Allowed named", func(t *testing.T) {
+		if !Allowed(&Principal{App: "hanzo-console"}, CapOrgAdmin) {
+			t.Fatal("a named app must hold its capability")
+		}
+	})
+	t.Run("Allowed unnamed denied", func(t *testing.T) {
+		if Allowed(&Principal{App: "other"}, CapOrgAdmin) {
+			t.Fatal("an unnamed app must hold nothing")
+		}
+	})
+	t.Run("Allowed unset env denied", func(t *testing.T) {
+		if Allowed(&Principal{App: "hanzo-console"}, CapKeyMint) { // IAM_KEY_MINT_ALLOWED_APPS unset here
+			t.Fatal("an unset allowlist must deny every app")
+		}
+	})
+	t.Run("Allowed non-app is vacuous", func(t *testing.T) {
+		if !Allowed(&Principal{Org: "hanzo"}, CapOrgAdmin) {
+			t.Fatal("a human holds capabilities vacuously; the org policy decides")
+		}
+	})
+	t.Run("BoundToOrg prefix", func(t *testing.T) {
+		p := &Principal{App: "hanzo-team"}
+		if !BoundToOrg(p, "hanzo") {
+			t.Fatal("hanzo-team must be bound to hanzo")
+		}
+		if BoundToOrg(p, "lux") {
+			t.Fatal("hanzo-team must NOT be bound to lux")
+		}
+		if BoundToOrg(&Principal{App: "hanzo"}, "hanzo") {
+			t.Fatal("an exact-name app (no agent segment) is bound to nothing")
+		}
+	})
+	t.Run("capFor mapping", func(t *testing.T) {
+		if capFor("organizations") != CapOrgAdmin || capFor("users") != CapUserAdmin {
+			t.Fatal("org/user entities must map to their capability")
+		}
+		if capFor("certs") != (Cap{}) || capFor("providers") != (Cap{}) {
+			t.Fatal("an unmapped entity must map to the empty (deny-all) capability")
+		}
+	})
+}

internal/authz/authz_cases_test.go

@@ -0,0 +1,463 @@
+// Copyright 2026 Hanzo AI, Inc. All rights reserved.
+
+package authz_test
+
+import (
+	"net/http"
+	"testing"
+	"time"
+)
+
+// The eight required cases, each through the real mounted router. Sub names map
+// to seeded principals: admin/root = SuperAdmin, hanzo/boss = org admin,
+// hanzo/alice = regular user, orgb/bob = a foreign org's admin.
+
+// 1. An unauthenticated CRUD write is refused before any handler runs.
+func TestUnauthenticatedWriteIs401(t *testing.T) {
+	h := newHarness(t)
+	cases := []struct {
+		name, method, path string
+		body               any
+	}{
+		{"create user", "POST", "/v1/iam/users", user("hanzo", "x")},
+		{"write cert", "POST", "/v1/iam/certs", cert("admin", signingKid)},
+		{"register app", "POST", "/v1/iam/application", map[string]any{"owner": "admin", "name": "x"}},
+		{"delete user", "POST", "/v1/iam/users/delete", map[string]any{"owner": "hanzo", "name": "alice"}},
+		{"update cert", "POST", "/v1/iam/certs/update", cert("admin", signingKid)},
+		{"create org", "POST", "/v1/iam/organizations", map[string]any{"owner": "admin", "name": "x"}},
+	}
+	for _, c := range cases {
+		t.Run(c.name, func(t *testing.T) {
+			if got := h.do(t, c.method, c.path, "", c.body); got != http.StatusUnauthorized {
+				t.Fatalf("%s %s no bearer = %d, want 401", c.method, c.path, got)
+			}
+		})
+	}
+}
+
+// 2. A valid principal in orgB writing an orgA-owned entity is refused (tenant
+// isolation): the target org is bound to the principal, never the body.
+func TestCrossOrgWriteIs403(t *testing.T) {
+	h := newHarness(t)
+	bob := h.token(t, "orgb/bob") // org admin, but of orgb
+	cases := []struct {
+		name, method, path string
+		body               any
+	}{
+		{"create user in hanzo", "POST", "/v1/iam/users", user("hanzo", "mole")},
+		{"update user in hanzo", "POST", "/v1/iam/users/update", user("hanzo", "alice")},
+		{"delete user in hanzo", "POST", "/v1/iam/users/delete", map[string]any{"owner": "hanzo", "name": "alice"}},
+		{"create role in hanzo", "POST", "/v1/iam/roles", map[string]any{"owner": "hanzo", "name": "r"}},
+	}
+	for _, c := range cases {
+		t.Run(c.name, func(t *testing.T) {
+			if got := h.do(t, c.method, c.path, bob, c.body); got != http.StatusForbidden {
+				t.Fatalf("orgb principal %s %s = %d, want 403", c.method, c.path, got)
+			}
+		})
+	}
+}
+
+// 3. THE poisoning gate. A non-SuperAdmin — org admin OR regular user OR a
+// built-in-org member — writing an admin/built-in-owned signing cert is refused.
+// Every cert write verb is covered, and the update/delete target the LIVE
+// signing cert, so a bypass would truly overwrite the platform key.
+func TestSigningCertPoisoningIs403(t *testing.T) {
+	h := newHarness(t)
+	principals := map[string]string{
+		"org admin (hanzo/boss)":         h.token(t, "hanzo/boss"),
+		"regular user (hanzo/alice)":     h.token(t, "hanzo/alice"),
+		"built-in member (built-in/svc)": h.token(t, "built-in/svc"),
+	}
+	writes := []struct {
+		name, path string
+		body       any
+	}{
+		{"create admin cert", "/v1/iam/certs", cert("admin", "cert-forge")},
+		{"overwrite live admin cert", "/v1/iam/certs/update", cert("admin", signingKid)},
+		{"delete live admin cert", "/v1/iam/certs/delete", map[string]any{"owner": "admin", "name": signingKid}},
+		{"create built-in cert", "/v1/iam/certs", cert("built-in", "cert-forge")},
+		{"overwrite built-in cert", "/v1/iam/certs/update", cert("built-in", "anything")},
+	}
+	for who, tok := range principals {
+		for _, w := range writes {
+			t.Run(who+" "+w.name, func(t *testing.T) {
+				if got := h.do(t, "POST", w.path, tok, w.body); got != http.StatusForbidden {
+					t.Fatalf("%s writing %s = %d, want 403 (poisoning gate)", who, w.path, got)
+				}
+			})
+		}
+	}
+}
+
+// 4. A SuperAdmin (org == admin) may write the admin signing cert and act across
+// any org. The guard admits it; the handler then succeeds (2xx). The rotation
+// case overwrites the LIVE signing cert with a complete body (key preserved) —
+// the legitimate operation the poisoning gate exists to reserve to SuperAdmins.
+func TestSuperAdminWritesAdminCertAndCrossOrg(t *testing.T) {
+	h := newHarness(t)
+	root := h.token(t, "admin/root")
+	rotate := map[string]any{
+		"owner": "admin", "name": signingKid,
+		"cryptoAlgorithm": "RS256", "privateKey": rsaKeyToPEM(t, h.key),
+	}
+	cases := []struct {
+		name, method, path string
+		body               any
+	}{
+		{"create a new admin signing cert", "POST", "/v1/iam/certs", cert("admin", "cert-fresh")},
+		{"rotate the live admin signing cert", "POST", "/v1/iam/certs/update", rotate},
+		{"create a user in any org", "POST", "/v1/iam/users", user("hanzo", "hire-by-root")},
+		{"create a user in another org", "POST", "/v1/iam/users", user("orgb", "hire-by-root")},
+		{"register an admin-owned app", "POST", "/v1/iam/application", map[string]any{"owner": "admin", "name": "root-app", "clientId": "root-app"}},
+	}
+	for _, c := range cases {
+		t.Run(c.name, func(t *testing.T) {
+			got := h.do(t, c.method, c.path, root, c.body)
+			if got < 200 || got >= 300 {
+				t.Fatalf("SuperAdmin %s %s = %d, want 2xx", c.method, c.path, got)
+			}
+		})
+	}
+}
+
+// 5. An org admin manages its OWN org's users and apps (2xx) but not another
+// org's (403). This is the org-admin tier: org-scoped, never cross-tenant.
+func TestOrgAdminManagesOwnOrgOnly(t *testing.T) {
+	h := newHarness(t)
+	boss := h.token(t, "hanzo/boss")
+
+	allow := []struct {
+		name, method, path string
+		body               any
+	}{
+		{"create user in own org", "POST", "/v1/iam/users", user("hanzo", "newhire")},
+		{"update self org's user", "POST", "/v1/iam/users/update", user("hanzo", "alice")},
+		{"register app in own org", "POST", "/v1/iam/application", map[string]any{"owner": "hanzo", "name": "hanzo-app", "clientId": "hanzo-app"}},
+	}
+	for _, c := range allow {
+		t.Run("allow/"+c.name, func(t *testing.T) {
+			got := h.do(t, c.method, c.path, boss, c.body)
+			if got < 200 || got >= 300 {
+				t.Fatalf("org admin %s %s (own org) = %d, want 2xx", c.method, c.path, got)
+			}
+		})
+	}
+
+	deny := []struct {
+		name, method, path string
+		body               any
+	}{
+		{"create user in another org", "POST", "/v1/iam/users", user("orgb", "mole")},
+		{"register app in another org", "POST", "/v1/iam/application", map[string]any{"owner": "orgb", "name": "x", "clientId": "x"}},
+		{"write a platform (admin) app", "POST", "/v1/iam/application", map[string]any{"owner": "admin", "name": "x", "clientId": "x"}},
+	}
+	for _, c := range deny {
+		t.Run("deny/"+c.name, func(t *testing.T) {
+			if got := h.do(t, c.method, c.path, boss, c.body); got != http.StatusForbidden {
+				t.Fatalf("org admin %s %s (foreign) = %d, want 403", c.method, c.path, got)
+			}
+		})
+	}
+}
+
+// 6. A regular user may read its own user record (guard admits it) but not touch
+// another's, and may NOT write even its own record — a raw self-write would let
+// it carry isAdmin and self-promote, so writes are refused outright.
+func TestRegularUserSelfServiceOnly(t *testing.T) {
+	h := newHarness(t)
+	alice := h.token(t, "hanzo/alice")
+
+	// Reading own record: the guard admits it (not 401/403). The Phase-1 GET
+	// handler binds no query, so the status is the handler's, never the guard's
+	// forbid — the point here is that the guard did NOT block self-read.
+	if got := h.do(t, "GET", "/v1/iam/users/get?owner=hanzo&name=alice", alice, nil); got == http.StatusForbidden || got == http.StatusUnauthorized {
+		t.Fatalf("regular self-read = %d, want the guard to admit it (not 401/403)", got)
+	}
+
+	// Everything else a regular user might try is refused.
+	deny := []struct {
+		name, method, path string
+		body               any
+	}{
+		{"read another user", "GET", "/v1/iam/users/get?owner=hanzo&name=boss", nil},
+		{"list the org's users", "GET", "/v1/iam/users?owner=hanzo", nil},
+		{"update own record (self-promote)", "POST", "/v1/iam/users/update", map[string]any{"user": map[string]any{"owner": "hanzo", "name": "alice", "isAdmin": true}}},
+		{"create a user", "POST", "/v1/iam/users", user("hanzo", "puppet")},
+		{"delete another user", "POST", "/v1/iam/users/delete", map[string]any{"owner": "hanzo", "name": "boss"}},
+		{"read another org", "GET", "/v1/iam/users/get?owner=orgb&name=bob", nil},
+	}
+	for _, c := range deny {
+		t.Run("deny/"+c.name, func(t *testing.T) {
+			if got := h.do(t, c.method, c.path, alice, c.body); got != http.StatusForbidden {
+				t.Fatalf("regular user %s %s = %d, want 403", c.method, c.path, got)
+			}
+		})
+	}
+}
+
+// 7. Public routes are reachable with NO bearer — the pre-auth OIDC/OAuth and
+// front-door surface a browser must reach before it holds a token. "Reachable"
+// means NOT the guard's 401: the endpoint's own handler answers (which may be a
+// 400 for a missing param — that is the handler, past the guard).
+func TestPublicRoutesNeedNoBearer(t *testing.T) {
+	h := newHarness(t)
+	public := []struct{ method, path string }{
+		{"GET", "/healthz"},
+		{"GET", "/.well-known/openid-configuration"},
+		{"GET", "/v1/iam/.well-known/openid-configuration"},
+		{"GET", "/v1/iam/.well-known/jwks"},
+		{"GET", "/.well-known/oauth-authorization-server"},        // RFC 8414 AS metadata (root)
+		{"GET", "/v1/iam/.well-known/oauth-authorization-server"}, // RFC 8414 AS metadata (v1)
+		{"POST", "/v1/iam/login"},
+		{"GET", "/v1/iam/oauth/authorize"},
+		{"POST", "/v1/iam/oauth/token"},
+		{"GET", "/v1/iam/get-app-login"},
+		{"GET", "/v1/iam/auth/methods"},
+		{"POST", "/v1/iam/oauth/logout"},
+		// The front-door session/identity surface — each self-resolves the caller
+		// (session cookie, else bearer) and answers anonymously (200 {status:error}
+		// or a handler 400), never the Guard's 401. These are the routes the old
+		// publicPaths list had to be patched to include; now they are public purely
+		// because oidc.Route registers them on the pre-Guard group.
+		{"GET", "/v1/iam/get-account"},
+		{"POST", "/v1/iam/signin"},
+		{"GET", "/v1/iam/whoami"},
+		{"GET", "/v1/iam/linked-accounts"},
+		{"POST", "/v1/iam/signup"},
+		{"POST", "/v1/iam/send-verification-code"},
+		{"POST", "/v1/iam/update-preferences"},
+	}
+	for _, c := range public {
+		t.Run(c.method+" "+c.path, func(t *testing.T) {
+			if got := h.do(t, c.method, c.path, "", map[string]any{}); got == http.StatusUnauthorized {
+				t.Fatalf("public %s %s = 401, want the endpoint reachable without a bearer", c.method, c.path)
+			}
+		})
+	}
+	// userinfo is bearer-gated but self-verifying: no bearer → its OWN 401
+	// (WWW-Authenticate), which is correct and must not be double-gated away.
+	if got := h.do(t, "GET", "/v1/iam/oauth/userinfo", "", nil); got != http.StatusUnauthorized {
+		t.Fatalf("userinfo no bearer = %d, want its own 401", got)
+	}
+}
+
+// 8. Bad bearers are refused with the same opaque 401 (no oracle): expired,
+// wrong algorithm (HMAC / none — never in the allowlist), a kid that names no
+// trusted cert, and a good-shape token under the wrong key. This reuses the
+// Phase-2 verifier defenses verbatim.
+func TestBadBearersAre401(t *testing.T) {
+	h := newHarness(t)
+	other := genRSA(t)
+	path, body := "/v1/iam/users", user("hanzo", "x")
+
+	bad := map[string]string{
+		"expired":    h.mint(t, "admin/root", time.Now().Add(-time.Hour)),
+		"forged kid": mintKid(t, h.key, "cert-nonexistent", "admin/root"),
+		"wrong key":  mintKid(t, other, signingKid, "admin/root"),
+		"hmac alg":   signHS256(t, signingKid, "admin/root"),
+		"alg none":   forgeNone(signingKid, "admin/root"),
+		"garbage":    "not.a.jwt",
+	}
+	for name, tok := range bad {
+		t.Run(name, func(t *testing.T) {
+			if got := h.do(t, "POST", path, tok, body); got != http.StatusUnauthorized {
+				t.Fatalf("bad bearer %q = %d, want 401", name, got)
+			}
+		})
+	}
+
+	// A revoked (forbidden) user's otherwise-valid token is refused too.
+	t.Run("revoked user", func(t *testing.T) {
+		if got := h.do(t, "POST", path, h.token(t, "hanzo/ghost"), body); got != http.StatusUnauthorized {
+			t.Fatalf("revoked user = %d, want 401", got)
+		}
+	})
+}
+
+// Org-confusion escalation defense: a token minted through a SHARED admin-org
+// app carries owner/organization = "admin" while its subject is a tenant user.
+// The guard authorizes from the subject (the real user's org), never the owner
+// claim, so this token is a hanzo REGULAR user — it cannot write an admin cert
+// or reach across orgs, exactly as if the misleading claim were absent.
+func TestOwnerClaimCannotEscalate(t *testing.T) {
+	h := newHarness(t)
+	// alice is a regular hanzo user; the token lies that owner == admin.
+	tok := h.sharedAppToken(t, "hanzo/alice", "admin")
+	cases := []struct {
+		name, method, path string
+		body               any
+	}{
+		{"write admin signing cert", "POST", "/v1/iam/certs", cert("admin", "cert-forge")},
+		{"overwrite live admin cert", "POST", "/v1/iam/certs/update", cert("admin", signingKid)},
+		{"create a user cross-org", "POST", "/v1/iam/users", user("orgb", "mole")},
+		{"promote self in own org", "POST", "/v1/iam/users/update", map[string]any{"user": map[string]any{"owner": "hanzo", "name": "alice", "isAdmin": true}}},
+	}
+	for _, c := range cases {
+		t.Run(c.name, func(t *testing.T) {
+			if got := h.do(t, c.method, c.path, tok, c.body); got != http.StatusForbidden {
+				t.Fatalf("owner-claim=admin %s %s = %d, want 403 (claim must not escalate)", c.method, c.path, got)
+			}
+		})
+	}
+}
+
+// A verified token whose subject names NO live user — a machine token, a
+// since-deleted user, or a forged-looking "admin/<nobody>" — authenticates but
+// carries no authority: SuperAdmin requires a real member of the admin org, so
+// the phantom-admin subject is refused everywhere.
+func TestPhantomSubjectHasNoAuthority(t *testing.T) {
+	h := newHarness(t)
+	ghostAdmin := h.token(t, "admin/nobody") // no such user seeded
+	ghostTenant := h.token(t, "hanzo/nobody")
+	cases := []struct {
+		name, tok, method, path string
+		body                    any
+	}{
+		{"phantom admin -> admin cert", ghostAdmin, "POST", "/v1/iam/certs", cert("admin", "cert-forge")},
+		{"phantom admin -> user in admin org", ghostAdmin, "POST", "/v1/iam/users", user("admin", "x")},
+		{"phantom admin -> user in a tenant", ghostAdmin, "POST", "/v1/iam/users", user("hanzo", "x")},
+		{"phantom tenant -> user in own org", ghostTenant, "POST", "/v1/iam/users", user("hanzo", "x")},
+	}
+	for _, c := range cases {
+		t.Run(c.name, func(t *testing.T) {
+			if got := h.do(t, c.method, c.path, c.tok, c.body); got != http.StatusForbidden {
+				t.Fatalf("%s = %d, want 403 (phantom subject has no authority)", c.name, got)
+			}
+		})
+	}
+}
+
+// The framework's generic side doors (MCP tool-call, OpenAPI doc) are gated by
+// the same fail-closed default — proven on a REAL, installed route and a REAL
+// tool INVOCATION, not just the envelope path. newHarness calls app.Prepare(), so
+// /mcp and /openapi are actually registered (the old test hit a route that was
+// never mounted, so the guard's 401 masked the fact the invocation was untested),
+// and the tool id is the framework's real one (post_v1_iam_certs), so a
+// regression that let a tool arguments-mask through would FAIL here, not pass.
+func TestFrameworkSideDoorsAreGated(t *testing.T) {
+	h := newHarness(t)
+	forge := cert("admin", "cert-forge") // {owner:"admin", …} — the poisoning target
+
+	// No bearer reaches /mcp at all: the guard authenticates the envelope before
+	// any dispatch, so it is 401 — never an unauthorized invocation, never a 404.
+	if got := h.do(t, "POST", "/mcp", "", mcpEnvelope("post_v1_iam_certs", forge)); got != http.StatusUnauthorized {
+		t.Fatalf("POST /mcp no bearer = %d, want 401 (guard fail-closed)", got)
+	}
+	// The OpenAPI doc — now a real installed route — is gated too.
+	if got := h.do(t, "GET", "/.well-known/openapi.json", "", nil); got != http.StatusUnauthorized {
+		t.Fatalf("GET openapi.json no bearer = %d, want 401", got)
+	}
+
+	// A non-SuperAdmin driving the REAL cert tool is refused at the op-invoke seam
+	// (isError), and — the assertion that matters — NOTHING is written.
+	boss := h.token(t, "hanzo/boss")
+	if status, isErr := h.mcpToolCall(t, boss, "post_v1_iam_certs", forge); status != http.StatusOK || !isErr {
+		t.Fatalf("MCP post_v1_iam_certs (non-super) = status %d isError %v, want 200/true (refused at op seam)", status, isErr)
+	}
+	if h.certExists(t, "admin", "cert-forge") {
+		t.Fatal("MCP cert-forge PERSISTED an admin-owned cert — the /mcp side door is OPEN")
+	}
+}
+
+// THE critical bug (finding #1), proven closed at the REST seam. The users entity
+// is the one input that nests its owner, so an org admin who masks a benign
+// top-level owner over a nested admin/isAdmin record must NOT create a platform
+// SuperAdmin. The write is refused (403) AND — the assertion the vacuous test
+// lacked — the store holds no such row afterward. Query the store, not the status.
+func TestUserOwnerMaskIsRefused(t *testing.T) {
+	h := newHarness(t)
+	boss := h.token(t, "hanzo/boss") // org admin of hanzo — authorized for "hanzo" only
+
+	// The PoC verbatim: top-level owner is the attacker's OWN org (which the guard
+	// would authorize), the nested record targets the reserved admin org with
+	// isAdmin — a platform SuperAdmin (owner=="admin" IS the predicate) if it landed.
+	createMask := map[string]any{
+		"owner":    "hanzo",
+		"user":     map[string]any{"owner": "admin", "name": "red-super", "isAdmin": true},
+		"password": "x",
+	}
+	if got := h.do(t, "POST", "/v1/iam/users", boss, createMask); got != http.StatusForbidden {
+		t.Fatalf("users create owner-mask = %d, want 403", got)
+	}
+	if h.userExists(t, "admin", "red-super") {
+		t.Fatal("owner-mask PERSISTED admin/red-super — total-account-takeover path is OPEN")
+	}
+
+	// The same mask, aimed cross-tenant: inject a user into a foreign org.
+	crossOrgMask := map[string]any{
+		"owner":    "hanzo",
+		"user":     map[string]any{"owner": "orgb", "name": "mole"},
+		"password": "x",
+	}
+	if got := h.do(t, "POST", "/v1/iam/users", boss, crossOrgMask); got != http.StatusForbidden {
+		t.Fatalf("users create cross-org mask = %d, want 403", got)
+	}
+	if h.userExists(t, "orgb", "mole") {
+		t.Fatal("owner-mask injected a user into orgb (cross-tenant)")
+	}
+
+	// Hijack an EXISTING admin-org user via /users/update (nested owner=admin):
+	// refused, and the victim's privilege/credentials are untouched.
+	hijack := map[string]any{
+		"user":     map[string]any{"owner": "admin", "name": "root", "isAdmin": true},
+		"password": "attacker-chosen",
+	}
+	if got := h.do(t, "POST", "/v1/iam/users/update", boss, hijack); got != http.StatusForbidden {
+		t.Fatalf("users update hijack of admin/root = %d, want 403", got)
+	}
+	if h.userIsAdmin(t, "admin", "root") {
+		t.Fatal("update hijack flipped admin/root.isAdmin — privilege takeover via /users/update")
+	}
+}
+
+// The MCP arguments-mask (finding #2), proven closed at the SAME op-invoke seam —
+// the design claim "the guard gates /mcp" made real, independent of the prod
+// MCP.Disabled flag (this harness leaves MCP ENABLED). A non-SuperAdmin driving
+// the real tools with admin-targeted arguments is refused and writes nothing; a
+// SuperAdmin drives the same tool successfully, so the seam refuses by AUTHORITY,
+// not by blanket-denying every MCP call.
+func TestMCPArgumentsMaskIsRefused(t *testing.T) {
+	h := newHarness(t)
+	boss := h.token(t, "hanzo/boss")
+	attackerPEM := rsaKeyToPEM(t, genRSA(t))
+
+	// a) cert-forge over MCP arguments: an admin signing cert with an attacker key.
+	forge := map[string]any{
+		"owner": "admin", "name": "cert-forge",
+		"cryptoAlgorithm": "RS256", "privateKey": attackerPEM,
+	}
+	if status, isErr := h.mcpToolCall(t, boss, "post_v1_iam_certs", forge); status != http.StatusOK || !isErr {
+		t.Fatalf("MCP cert-forge (non-super) = status %d isError %v, want 200/true (refused)", status, isErr)
+	}
+	if h.certExists(t, "admin", "cert-forge") {
+		t.Fatal("MCP cert-forge PERSISTED an admin signing cert with an attacker key")
+	}
+
+	// b) the users owner-mask over MCP arguments: a nested admin SuperAdmin record.
+	userMask := map[string]any{
+		"owner":    "hanzo",
+		"user":     map[string]any{"owner": "admin", "name": "red-super", "isAdmin": true},
+		"password": "x",
+	}
+	if status, isErr := h.mcpToolCall(t, boss, "post_v1_iam_users", userMask); status != http.StatusOK || !isErr {
+		t.Fatalf("MCP users owner-mask (non-super) = status %d isError %v, want 200/true (refused)", status, isErr)
+	}
+	if h.userExists(t, "admin", "red-super") {
+		t.Fatal("MCP users owner-mask PERSISTED admin/red-super — total takeover via /mcp")
+	}
+
+	// Control: a SuperAdmin drives the SAME cert tool successfully — the seam
+	// discriminates by authority; it does not just refuse everything over MCP.
+	root := h.token(t, "admin/root")
+	legit := map[string]any{
+		"owner": "admin", "name": "cert-legit",
+		"cryptoAlgorithm": "RS256", "privateKey": rsaKeyToPEM(t, h.key),
+	}
+	if status, isErr := h.mcpToolCall(t, root, "post_v1_iam_certs", legit); status != http.StatusOK || isErr {
+		t.Fatalf("MCP cert create by SuperAdmin = status %d isError %v, want 200/false (allowed)", status, isErr)
+	}
+	if !h.certExists(t, "admin", "cert-legit") {
+		t.Fatal("SuperAdmin MCP cert create did not persist — the seam is over-refusing")
+	}
+}

internal/authz/authz_http_test.go

@@ -0,0 +1,331 @@
+// Copyright 2026 Hanzo AI, Inc. All rights reserved.
+
+package authz_test
+
+// End-to-end authorization tests driven through the REAL mounted router
+// (routes.Mount, which installs authz.Guard after the public group, so gating is
+// structural — the public routes registered before it are never reached by it).
+// Every case is a wire request
+// a client could send: a status code is the whole contract. Tokens are genuine
+// RS256 JWTs signed by the seeded admin signing cert, so they pass the exact
+// oidc.VerifyToken the guard reuses — nothing here is mocked.
+
+import (
+	"bytes"
+	"context"
+	"crypto/rand"
+	"crypto/rsa"
+	"crypto/x509"
+	"encoding/base64"
+	"encoding/json"
+	"encoding/pem"
+	"io"
+	"net/http/httptest"
+	"path/filepath"
+	"sync"
+	"testing"
+	"time"
+
+	"github.com/golang-jwt/jwt/v5"
+
+	"github.com/hanzoai/orm"
+	ormdb "github.com/hanzoai/orm/db"
+	"github.com/zap-proto/zip"
+
+	"github.com/hanzoai/iam/internal/routes"
+	"github.com/hanzoai/iam/internal/schema"
+	"github.com/hanzoai/iam/internal/store"
+)
+
+const signingKid = "cert-hanzo" // the seeded admin signing cert's name = JWKS kid
+
+// Two RSA keys, generated once for the whole suite: the trust-anchor key the
+// signing cert holds, and a distinct "other" key for the wrong-key bearer test.
+// Keygen is the slow part and the crypto under test is identical whichever key
+// it is, so caching them keeps the suite (and -race) fast.
+var (
+	anchorKeyOnce, otherKeyOnce sync.Once
+	anchorKey, otherKey         *rsa.PrivateKey
+)
+
+func trustKey() *rsa.PrivateKey {
+	anchorKeyOnce.Do(func() { anchorKey = mustRSA() })
+	return anchorKey
+}
+
+func mustRSA() *rsa.PrivateKey {
+	k, err := rsa.GenerateKey(rand.Reader, 2048)
+	if err != nil {
+		panic(err)
+	}
+	return k
+}
+
+// harness holds the mounted app, the RSA key the signing cert holds (so a test
+// can mint a token any principal would carry), and the store (so a test can
+// assert that a refused write persisted NOTHING — the real security property, not
+// just a status code).
+type harness struct {
+	app *zip.App
+	key *rsa.PrivateKey
+	db  orm.DB
+}
+
+// userExists reports whether a user row (owner, name) is persisted — used to
+// prove a refused create/update wrote nothing.
+func (h *harness) userExists(t *testing.T, owner, name string) bool {
+	t.Helper()
+	u, err := store.GetUserByName(context.Background(), h.db, owner, name)
+	if err != nil {
+		t.Fatalf("lookup user %s/%s: %v", owner, name, err)
+	}
+	return u != nil
+}
+
+// certExists reports whether a cert row (owner, name) is persisted.
+func (h *harness) certExists(t *testing.T, owner, name string) bool {
+	t.Helper()
+	c, err := store.GetCert(context.Background(), h.db, owner, name)
+	if err != nil {
+		t.Fatalf("lookup cert %s/%s: %v", owner, name, err)
+	}
+	return c != nil
+}
+
+// userIsAdmin reports the persisted isAdmin flag of (owner, name) — used to prove
+// a refused update did NOT flip a victim's privilege.
+func (h *harness) userIsAdmin(t *testing.T, owner, name string) bool {
+	t.Helper()
+	u, err := store.GetUserByName(context.Background(), h.db, owner, name)
+	if err != nil || u == nil {
+		t.Fatalf("expected user %s/%s to exist: %v", owner, name, err)
+	}
+	return u.IsAdmin
+}
+
+// newHarness opens a fresh SQLite store, seeds the trust anchor (an admin-owned
+// RS256 signing cert) plus a cast of principals across three orgs, and mounts
+// the full router — guard and all. MCP is left ENABLED here (unlike prod) so the
+// tests prove the guard, not a disabled feature, closes the /mcp side door.
+func newHarness(t *testing.T) *harness {
+	t.Helper()
+	_ = schema.Kinds() // force kind registration
+	key := trustKey()
+	dir := t.TempDir()
+	db, err := orm.OpenSQLite(&ormdb.SQLiteDBConfig{
+		Path:   filepath.Join(dir, "authz.db"),
+		Config: ormdb.SQLiteConfig{BusyTimeout: 5000, JournalMode: "WAL"},
+	})
+	if err != nil {
+		t.Fatalf("open sqlite: %v", err)
+	}
+	t.Cleanup(func() { _ = db.Close() })
+
+	// Trust anchor: the admin-owned signing cert the verifier and JWKS trust.
+	// Poisoning tests target THIS row, so a bypassed guard would really overwrite
+	// the live signing key.
+	seedCert(t, db, "admin", signingKid, rsaKeyToPEM(t, key))
+
+	// Principals: one per scope, plus a revoked user and a cross-tenant org.
+	seedUser(t, db, "admin", "root", false, false, false)  // SuperAdmin (org == admin)
+	seedUser(t, db, "hanzo", "boss", true, false, false)   // org admin of hanzo
+	seedUser(t, db, "hanzo", "alice", false, false, false) // regular user in hanzo
+	seedUser(t, db, "orgb", "bob", true, false, false)     // org admin of orgb (cross-tenant)
+	seedUser(t, db, "hanzo", "ghost", true, true, false)   // forbidden — revoked
+	seedUser(t, db, "built-in", "svc", true, false, false) // built-in org, NOT SuperAdmin
+
+	app := zip.New(zip.Config{AppName: "authz-test", DisableStartupMessage: true})
+	routes.Route(app, db)
+	// Install the deferred framework projections (/mcp, /openapi) for real, so the
+	// side-door tests drive the ACTUAL routes — the same surface a served app
+	// exposes — not a route that never got registered. MCP is left ENABLED here
+	// (unlike prod) so the tests prove the guard, not a disabled feature, closes it.
+	app.Prepare()
+	return &harness{app: app, key: key, db: db}
+}
+
+// mint signs an RS256 bearer for subject `sub` (an "owner/name") with the given
+// expiry, under the trusted kid — the exact shape a real token carries.
+func (h *harness) mint(t *testing.T, sub string, exp time.Time) string {
+	t.Helper()
+	return signRS256(t, h.key, signingKid, jwt.MapClaims{
+		"sub": sub,
+		"iat": time.Now().Add(-time.Minute).Unix(),
+		"exp": exp.Unix(),
+	})
+}
+
+// token is a convenience for a valid, hour-long bearer for sub.
+func (h *harness) token(t *testing.T, sub string) string {
+	return h.mint(t, sub, time.Now().Add(time.Hour))
+}
+
+// sharedAppToken mints a valid bearer whose owner/organization claims say
+// ownerClaim (as a token minted through a SHARED admin-org app would) while the
+// subject names a different, tenant user. The guard must authorize from the
+// subject, never these claims — the org-confusion escalation defense.
+func (h *harness) sharedAppToken(t *testing.T, sub, ownerClaim string) string {
+	t.Helper()
+	return signRS256(t, h.key, signingKid, jwt.MapClaims{
+		"sub": sub, "owner": ownerClaim, "organization": ownerClaim, "exp": future(),
+	})
+}
+
+// do issues one request through the real router and returns the status code.
+func (h *harness) do(t *testing.T, method, path, bearer string, body any) int {
+	t.Helper()
+	var r io.Reader
+	if body != nil {
+		b, _ := json.Marshal(body)
+		r = bytes.NewReader(b)
+	}
+	req := httptest.NewRequest(method, path, r)
+	req.Host = "hanzo.id"
+	if body != nil {
+		req.Header.Set("Content-Type", "application/json")
+	}
+	if bearer != "" {
+		req.Header.Set("Authorization", "Bearer "+bearer)
+	}
+	resp, err := h.app.Fiber().Test(req)
+	if err != nil {
+		t.Fatalf("%s %s: %v", method, path, err)
+	}
+	_, _ = io.Copy(io.Discard, resp.Body)
+	_ = resp.Body.Close()
+	return resp.StatusCode
+}
+
+// mcpEnvelope builds a JSON-RPC 2.0 tools/call for the framework tool `tool`
+// (its real op id, e.g. "post_v1_iam_certs") with `args` as the tool arguments —
+// the same body an MCP agent would POST to /mcp.
+func mcpEnvelope(tool string, args any) map[string]any {
+	return map[string]any{
+		"jsonrpc": "2.0", "id": 1, "method": "tools/call",
+		"params": map[string]any{"name": tool, "arguments": args},
+	}
+}
+
+// mcpToolCall fires an MCP tools/call for `tool` with `args` through the REAL
+// mounted /mcp route and reports the HTTP status plus whether the op-invoke
+// authorizer refused it. A refusal at the op seam surfaces as an isError result
+// with HTTP 200 (MCP reports handler errors in-band), never a transport 403, so
+// a refused write shows up as isError==true — the status stays 200.
+func (h *harness) mcpToolCall(t *testing.T, bearer, tool string, args any) (status int, isError bool) {
+	t.Helper()
+	b, _ := json.Marshal(mcpEnvelope(tool, args))
+	req := httptest.NewRequest("POST", "/mcp", bytes.NewReader(b))
+	req.Host = "hanzo.id"
+	req.Header.Set("Content-Type", "application/json")
+	if bearer != "" {
+		req.Header.Set("Authorization", "Bearer "+bearer)
+	}
+	resp, err := h.app.Fiber().Test(req)
+	if err != nil {
+		t.Fatalf("mcp tools/call %s: %v", tool, err)
+	}
+	defer func() { _ = resp.Body.Close() }()
+	var out struct {
+		Result struct {
+			IsError bool `json:"isError"`
+		} `json:"result"`
+	}
+	_ = json.NewDecoder(resp.Body).Decode(&out)
+	return resp.StatusCode, out.Result.IsError
+}
+
+// ---- seed helpers ----------------------------------------------------------
+
+func seedCert(t *testing.T, db orm.DB, owner, name, privPEM string) {
+	t.Helper()
+	c := orm.New[schema.Cert](db)
+	c.Owner, c.Name = owner, name
+	c.CryptoAlgorithm = "RS256"
+	c.PrivateKey = privPEM
+	c.SetId(owner + "/" + name)
+	if err := c.CreateCtx(context.Background()); err != nil {
+		t.Fatalf("seed cert %s/%s: %v", owner, name, err)
+	}
+}
+
+func seedUser(t *testing.T, db orm.DB, owner, name string, admin, forbidden, deleted bool) {
+	t.Helper()
+	u := orm.New[schema.User](db)
+	u.Owner, u.Name = owner, name
+	u.IsAdmin, u.IsForbidden, u.IsDeleted = admin, forbidden, deleted
+	u.SetId(owner + "/" + name)
+	if err := u.CreateCtx(context.Background()); err != nil {
+		t.Fatalf("seed user %s/%s: %v", owner, name, err)
+	}
+}
+
+func rsaKeyToPEM(t *testing.T, k *rsa.PrivateKey) string {
+	t.Helper()
+	return string(pem.EncodeToMemory(&pem.Block{
+		Type: "RSA PRIVATE KEY", Bytes: x509.MarshalPKCS1PrivateKey(k),
+	}))
+}
+
+func signRS256(t *testing.T, key *rsa.PrivateKey, kid string, claims jwt.MapClaims) string {
+	t.Helper()
+	tok := jwt.NewWithClaims(jwt.SigningMethodRS256, claims)
+	tok.Header["kid"] = kid
+	s, err := tok.SignedString(key)
+	if err != nil {
+		t.Fatalf("sign: %v", err)
+	}
+	return s
+}
+
+func future() int64 { return time.Now().Add(time.Hour).Unix() }
+
+// mintKid signs an hour-long RS256 token for sub under an arbitrary key and kid,
+// for the forged-kid and wrong-key bearer tests.
+func mintKid(t *testing.T, key *rsa.PrivateKey, kid, sub string) string {
+	return signRS256(t, key, kid, jwt.MapClaims{"sub": sub, "exp": future()})
+}
+
+// genRSA returns the suite's cached "other" key — a valid key that is NOT the
+// trust anchor, for the wrong-signature bearer test.
+func genRSA(t *testing.T) *rsa.PrivateKey {
+	t.Helper()
+	otherKeyOnce.Do(func() { otherKey = mustRSA() })
+	return otherKey
+}
+
+// signHS256 forges an HMAC-signed token carrying the trusted kid. The verifier's
+// algorithm allowlist has no HMAC family, so it is rejected before any key is
+// consulted (the classic alg-confusion downgrade, closed).
+func signHS256(t *testing.T, kid, sub string) string {
+	t.Helper()
+	tok := jwt.NewWithClaims(jwt.SigningMethodHS256, jwt.MapClaims{"sub": sub, "exp": future()})
+	tok.Header["kid"] = kid
+	s, err := tok.SignedString([]byte("attacker-chosen-secret"))
+	if err != nil {
+		t.Fatalf("hs256 sign: %v", err)
+	}
+	return s
+}
+
+// forgeNone hand-builds an alg:none token (header.claims. with an empty
+// signature) — the unsigned-token attack. "none" is absent from the allowlist,
+// so it never verifies.
+func forgeNone(kid, sub string) string {
+	enc := func(v any) string {
+		b, _ := json.Marshal(v)
+		return base64.RawURLEncoding.EncodeToString(b)
+	}
+	head := enc(map[string]any{"alg": "none", "typ": "JWT", "kid": kid})
+	body := enc(map[string]any{"sub": sub, "exp": future()})
+	return head + "." + body + "."
+}
+
+// cert is a minimal signing-cert create/update/delete body.
+func cert(owner, name string) map[string]any {
+	return map[string]any{"owner": owner, "name": name, "cryptoAlgorithm": "RS256"}
+}
+
+// user wraps a create/update user body ({user:{...}, password}).
+func user(owner, name string) map[string]any {
+	return map[string]any{"user": map[string]any{"owner": owner, "name": name}, "password": "x"}
+}

internal/authz/authz_internal_test.go

@@ -0,0 +1,95 @@
+// Copyright 2026 Hanzo AI, Inc. All rights reserved.
+
+package authz
+
+import "testing"
+
+// The pure policy, tested exhaustively and independent of HTTP. authorize IS the
+// security decision; this table is its full truth.
+func TestAuthorizePolicy(t *testing.T) {
+	super := &Principal{Org: "admin", User: "root", Super: true}
+	orgAdmin := &Principal{Org: "hanzo", User: "boss", Admin: true}
+	regular := &Principal{Org: "hanzo", User: "alice"}
+	builtin := &Principal{Org: "built-in", User: "svc", Admin: true} // NOT super
+
+	cases := []struct {
+		name   string
+		p      *Principal
+		method string
+		entity string
+		owner  string
+		name2  string
+		want   bool
+	}{
+		// SuperAdmin: unrestricted, including the reserved owners and cross-org.
+		{"super writes admin cert", super, "POST", "certs", "admin", "k", true},
+		{"super writes built-in cert", super, "POST", "certs", "built-in", "k", true},
+		{"super cross-org user", super, "POST", "users", "orgb", "x", true},
+
+		// Poisoning gate: no non-super may write a reserved-owner resource.
+		{"org admin -> admin cert", orgAdmin, "POST", "certs", "admin", "k", false},
+		{"org admin -> built-in cert", orgAdmin, "POST", "certs", "built-in", "k", false},
+		{"regular -> admin cert", regular, "POST", "certs", "admin", "k", false},
+		{"built-in member -> built-in cert", builtin, "POST", "certs", "built-in", "k", false},
+		{"built-in member -> admin app", builtin, "POST", "application", "admin", "a", false},
+
+		// Tenant isolation: own org only.
+		{"org admin own org", orgAdmin, "POST", "users", "hanzo", "x", true},
+		{"org admin foreign org", orgAdmin, "POST", "users", "orgb", "x", false},
+		{"org admin empty owner", orgAdmin, "POST", "certs", "", "k", false},
+
+		// Regular user: read own record only; no writes, no others, no self-promote.
+		{"regular read own", regular, "GET", "users", "hanzo", "alice", true},
+		{"regular read other", regular, "GET", "users", "hanzo", "boss", false},
+		{"regular list org", regular, "GET", "users", "hanzo", "", false},
+		{"regular write own (self-promote)", regular, "POST", "users", "hanzo", "alice", false},
+		{"regular read own non-user entity", regular, "GET", "roles", "hanzo", "alice", false},
+		{"regular read foreign org self-name", regular, "GET", "users", "orgb", "alice", false},
+	}
+	for _, c := range cases {
+		t.Run(c.name, func(t *testing.T) {
+			if got := authorize(c.p, c.method, c.entity, c.owner, c.name2); got != c.want {
+				t.Fatalf("authorize(%s) = %v, want %v", c.name, got, c.want)
+			}
+		})
+	}
+}
+
+// SuperAdmin is exactly org=="admin"; built-in is NOT super — the built-in gap
+// the poisoning gate must close depends on this.
+func TestSuperIsAdminOrgOnly(t *testing.T) {
+	if (&Principal{Org: "built-in", Super: false}).Super {
+		t.Fatal("built-in must not be SuperAdmin")
+	}
+	// A built-in-org principal fails the reserved-owner write even for its own org.
+	if authorize(&Principal{Org: "built-in", Admin: true}, "POST", "certs", "built-in", "k") {
+		t.Fatal("built-in admin must not write built-in signing certs")
+	}
+}
+
+// Public vs gated is no longer a path allow-list this package owns — it is
+// STRUCTURAL, decided by which group a route is registered on in routes.Mount
+// (the public group before the Guard, everything else after it). The boundary is
+// therefore proven end-to-end over the real mounted router: TestPublicRoutesNeedNoBearer
+// (public routes reachable without a bearer), TestUnauthenticatedWriteIs401 /
+// TestCrossOrgWriteIs403 (authed routes gated), and TestFrameworkSideDoorsAreGated
+// (/mcp + /openapi gated) in authz_cases_test.go.
+
+func TestEntityOf(t *testing.T) {
+	cases := map[string]string{
+		"/v1/iam/users":        "users",
+		"/v1/iam/users/get":    "users",
+		"/v1/iam/users/update": "users",
+		"/v1/iam/certs/delete": "certs",
+		"/v1/iam/application":  "application",
+		"/v1/iam/audit-logs":   "audit-logs",
+		"/mcp":                 "",
+		"/healthz":             "",
+		"/v1/iam/":             "",
+	}
+	for path, want := range cases {
+		if got := entityOf(path); got != want {
+			t.Errorf("entityOf(%q) = %q, want %q", path, got, want)
+		}
+	}
+}

internal/authz/authz_read_test.go

@@ -0,0 +1,120 @@
+// Copyright 2026 Hanzo AI, Inc. All rights reserved.
+
+package authz_test
+
+// Read-path authorization, driven through the REAL mounted router. A status code
+// is not the contract here — the BODY is: a listing that returns 200 while
+// carrying the admin signing key is a total compromise. Every case asserts on
+// what actually crossed the wire.
+
+import (
+	"bytes"
+	"encoding/json"
+	"io"
+	"net/http/httptest"
+	"strings"
+	"testing"
+)
+
+// doBody is do() plus the response body — the read surface's real contract.
+func (h *harness) doBody(t *testing.T, method, path, bearer string, body any) (int, string) {
+	t.Helper()
+	var r io.Reader
+	if body != nil {
+		b, _ := json.Marshal(body)
+		r = bytes.NewReader(b)
+	}
+	req := httptest.NewRequest(method, path, r)
+	req.Host = "hanzo.id"
+	if body != nil {
+		req.Header.Set("Content-Type", "application/json")
+	}
+	if bearer != "" {
+		req.Header.Set("Authorization", "Bearer "+bearer)
+	}
+	resp, err := h.app.Fiber().Test(req)
+	if err != nil {
+		t.Fatalf("%s %s: %v", method, path, err)
+	}
+	b, _ := io.ReadAll(resp.Body)
+	_ = resp.Body.Close()
+	return resp.StatusCode, string(b)
+}
+
+// leaks reports whether a response body carries private key material.
+func leaks(body string) bool {
+	return strings.Contains(body, "PRIVATE KEY") || strings.Contains(body, `"privateKey":"-`)
+}
+
+// TestCertPrivateKeyNeverLeaks is the PoC that proved a full token-forgery
+// compromise: a hanzo org admin listed certs and received the admin trust
+// anchor's private key. Two independent defects composed into it — the listing
+// ignored its owner (a GET binds no query, so in.Owner was always "", and an
+// empty owner listed EVERY tenant), and the response serialized privateKey. Both
+// are closed: the owner is resolved from the verified bearer (authz.Scope), and
+// a Cert is masked on the way out (schema.Cert.Mask), so the key material that
+// signs every token cannot cross the API at all — a relying party reads the
+// PUBLIC half from the JWKS (RFC 7517).
+func TestCertPrivateKeyNeverLeaks(t *testing.T) {
+	h := newHarness(t)
+	anchor := rsaKeyToPEM(t, h.key) // the admin signing cert's real private key
+
+	t.Run("the org-admin PoC leaks neither key material nor another tenant's cert", func(t *testing.T) {
+		status, body := h.doBody(t, "GET", "/v1/iam/certs?owner=hanzo", h.token(t, "hanzo/boss"), nil)
+		if status != 200 {
+			t.Fatalf("own-org listing must succeed, got %d: %s", status, body)
+		}
+		if strings.Contains(body, anchor) || leaks(body) {
+			t.Fatal("LEAK: admin signing key material in an org-admin listing")
+		}
+		if strings.Contains(body, signingKid) {
+			t.Fatal("CROSS-TENANT: the admin-owned cert appeared in a hanzo listing")
+		}
+	})
+
+	t.Run("a query owner cannot widen the listing past the bearer", func(t *testing.T) {
+		// Ask for the admin org explicitly: the guard denies the cross-tenant
+		// read, and even if it did not, Scope binds the listing to hanzo.
+		status, body := h.doBody(t, "GET", "/v1/iam/certs?owner=admin", h.token(t, "hanzo/boss"), nil)
+		if status == 200 && (strings.Contains(body, signingKid) || leaks(body)) {
+			t.Fatalf("LEAK: querying owner=admin escaped the bearer's scope: %s", body)
+		}
+	})
+
+	t.Run("SuperAdmin reads every tenant but never key material", func(t *testing.T) {
+		status, body := h.doBody(t, "GET", "/v1/iam/certs", h.token(t, "admin/root"), nil)
+		if status != 200 {
+			t.Fatalf("SuperAdmin listing must succeed, got %d: %s", status, body)
+		}
+		if !strings.Contains(body, signingKid) {
+			t.Fatalf("SuperAdmin must still SEE the cert (masked, not hidden): %s", body)
+		}
+		if strings.Contains(body, anchor) || leaks(body) {
+			t.Fatal("LEAK: key material served to SuperAdmin — the key never leaves the store")
+		}
+	})
+
+	t.Run("an unscoped listing by a tenant is refused, never lists-all", func(t *testing.T) {
+		status, body := h.doBody(t, "GET", "/v1/iam/certs", h.token(t, "hanzo/boss"), nil)
+		if status == 200 && strings.Contains(body, signingKid) {
+			t.Fatalf("LEAK: an empty owner listed every tenant: %s", body)
+		}
+	})
+
+	t.Run("the JWKS still publishes the PUBLIC half at both paths", func(t *testing.T) {
+		// The keys are masked out of the CRUD surface, not out of the protocol:
+		// the gateway defaults to the root path, the SDK reads the /v1/iam one.
+		for _, p := range []string{"/.well-known/jwks", "/v1/iam/.well-known/jwks"} {
+			status, body := h.doBody(t, "GET", p, "", nil)
+			if status != 200 {
+				t.Fatalf("%s must be public and serve keys, got %d", p, status)
+			}
+			if !strings.Contains(body, `"kty":"RSA"`) || !strings.Contains(body, signingKid) {
+				t.Fatalf("%s must publish the signing key: %s", p, body)
+			}
+			if leaks(body) || strings.Contains(body, `"d":`) {
+				t.Fatalf("LEAK: %s served private material: %s", p, body)
+			}
+		}
+	})
+}

internal/authz/cap.go

@@ -0,0 +1,113 @@
+// Copyright 2026 Hanzo AI, Inc. All rights reserved.
+
+package authz
+
+import (
+	"os"
+	"strings"
+)
+
+// Confidential-client capabilities — the port of the v1 gate (object/app_authz.go
+// + controllers/app_mutation_guard.go requireAppCapability) that revoked the
+// "every client credential is a global admin" privilege.
+//
+// A Cap is a named authority an app principal holds ONLY when its application
+// name is listed in the allowlist Env names. It is the ONLY thing an app
+// principal's authority is made of: an app is never a SuperAdmin and never an
+// org admin (see Principal), so a leaked client credential grants exactly the
+// capabilities its NAME was allowlisted for and nothing more.
+//
+// The key is the application NAME, not its (owner, name) row — a name in an
+// allowlist is thereby reserved to the platform's admin-owned app, so a tenant
+// cannot register <theirOrg>/hanzo-console and inherit its grants.
+
+// Cap is one capability: a Name for diagnostics and the Env var holding its
+// comma-separated allowlist of application names.
+type Cap struct {
+	Name string
+	Env  string
+}
+
+// The capability set, matching the live allowlists byte-for-byte
+// (universe infra/k8s/operator/crs/iam.yaml). Every one is fail-secure: an unset
+// or empty allowlist denies EVERY app.
+var (
+	// CapKeyMint gates minting, rotating, or revoking a credential on another
+	// principal's behalf — the service-account administration boundary, since a
+	// minted key is an org-billing credential.
+	CapKeyMint = Cap{Name: "key-mint", Env: "IAM_KEY_MINT_ALLOWED_APPS"}
+
+	// CapUserAdmin gates cross-user account mutation (owner, isAdmin, email,
+	// type, credentials) — cloud moves an onboarding user into the org it just
+	// created through this.
+	CapUserAdmin = Cap{Name: "user", Env: "IAM_USER_ADMIN_APPS"}
+
+	// CapOrgAdmin gates organization create/read/update/delete. Unlike the
+	// signing-material capabilities this one is populated in every environment:
+	// the brand consoles legitimately create customer orgs during onboarding.
+	CapOrgAdmin = Cap{Name: "organization", Env: "IAM_ORG_ADMIN_APPS"}
+
+	// CapServiceAccountRead gates LISTING an org's service accounts — names and
+	// metadata only, never secrets. It is the read-only counterpart to
+	// CapKeyMint (a read cap can never mint, rotate, or delete a credential) and
+	// is additionally tenant-bound by BoundToOrg.
+	CapServiceAccountRead = Cap{Name: "service-account-read", Env: "IAM_SA_LIST_ALLOWED_APPS"}
+)
+
+// Allowed reports whether p holds c.
+//
+// A non-app principal holds every capability vacuously: this gate concerns
+// confidential clients ONLY, and a human's authority is decided by the org
+// policy in authorize(). Conflating the two would either lock every human out or
+// hand every app a human's scope.
+//
+// Fail-secure, exactly as v1: an app whose allowlist is unset, empty, or does
+// not name it holds nothing.
+func Allowed(p *Principal, c Cap) bool {
+	if p == nil {
+		return false
+	}
+	if p.App == "" {
+		return true // not an app; the org policy decides
+	}
+	if c.Env == "" {
+		return false
+	}
+	for _, item := range strings.Split(os.Getenv(c.Env), ",") {
+		if strings.TrimSpace(item) == p.App {
+			return true
+		}
+	}
+	return false
+}
+
+// BoundToOrg reports whether an app principal is bound to org by the
+// <org>-<app> naming convention — app/hanzo-team may act on organization=hanzo
+// and on no other tenant's. The org is derived from the (allowlist-reserved)
+// application NAME, so the binding holds regardless of the app row's owner, and
+// it is the same prefix rule the service-account names it reads obey.
+func BoundToOrg(p *Principal, org string) bool {
+	if p == nil || org == "" {
+		return false
+	}
+	prefix := org + "-"
+	return len(p.App) > len(prefix) && strings.HasPrefix(p.App, prefix)
+}
+
+// capFor maps an entity to the capability a confidential client needs to act on
+// it. An entity with NO mapping grants an app nothing: unmapped denies exactly
+// as an unset allowlist does, which IS v1's live behaviour for every capability
+// the deployment leaves empty — certs, providers, tokens, syncers, webhooks are
+// all deny-all by design, because no client credential should ever reach signing
+// material. Only the two entities a live confidential client touches are mapped:
+// the brand consoles create customer orgs, and cloud moves the onboarding user
+// into the org it just created.
+func capFor(entity string) Cap {
+	switch entity {
+	case "organizations":
+		return CapOrgAdmin
+	case "users":
+		return CapUserAdmin
+	}
+	return Cap{}
+}

internal/bootstrap/bootstrap.go

@@ -0,0 +1,274 @@
+// Copyright 2026 Hanzo AI, Inc. All rights reserved.
+
+// Package bootstrap serves the operator-driven service-account provisioning
+// endpoints — `POST /v1/iam/admin/{applications,users}/upsert`. The Hanzo K8s
+// operator (operator-core) reconciles an IAM CR's spec.applications[]/users[] here,
+// wiring the service-account OAuth apps that KMS/signers authenticate with, with NO
+// human admin in the loop. It is idempotent (create OR update by the natural key)
+// so a ~30s reconcile is a no-op once converged.
+//
+// Auth is a UNIFIED SERVICE TOKEN presented as `Authorization: Bearer <token>`,
+// validated constant-time against the first non-empty of HANZO_API_KEY /
+// KMS_SERVICE_TOKEN / IAM_SERVICE_TOKEN — the same pipeline the old iam used. The
+// token is system-level (bypasses the org-membership gate), so these routes live in
+// the PUBLIC group (before the Guard) and self-authenticate here. An unset token
+// fails closed: no service token configured → no bootstrap.
+package bootstrap
+
+import (
+	"crypto/rand"
+	"crypto/subtle"
+	"encoding/base64"
+	"encoding/json"
+	"errors"
+	"os"
+	"strings"
+	"time"
+
+	"github.com/hanzoai/iam/internal/cred"
+
+	"github.com/hanzoai/orm"
+	"github.com/zap-proto/zip"
+
+	"github.com/hanzoai/iam/internal/schema"
+	"github.com/hanzoai/iam/internal/store"
+)
+
+// Route registers the bootstrap upsert endpoints on the PUBLIC group r (they
+// self-authenticate via the service token, not a bearer principal).
+func Route(r zip.Router, db orm.DB) {
+	r.Post("/v1/iam/admin/applications/upsert", upsertApplication(db))
+	r.Post("/v1/iam/admin/users/upsert", upsertUser(db))
+}
+
+// serviceToken returns the configured unified service token, or "" (fail closed).
+func serviceToken() string {
+	for _, key := range []string{"HANZO_API_KEY", "KMS_SERVICE_TOKEN", "IAM_SERVICE_TOKEN"} {
+		if v := strings.TrimSpace(os.Getenv(key)); v != "" {
+			return v
+		}
+	}
+	return ""
+}
+
+// authService validates the Bearer service token (constant-time). An unset expected
+// token, or a mismatch, is unauthorized.
+func authService(c *zip.Ctx) bool {
+	expected := serviceToken()
+	if expected == "" {
+		return false
+	}
+	const p = "Bearer "
+	h := c.Header("Authorization")
+	if len(h) <= len(p) || !strings.EqualFold(h[:len(p)], p) {
+		return false
+	}
+	got := strings.TrimSpace(h[len(p):])
+	return got != "" && subtle.ConstantTimeCompare([]byte(got), []byte(expected)) == 1
+}
+
+func unauthorized(c *zip.Ctx) error {
+	return c.JSON(401, map[string]any{"status": "error", "msg": "a valid service token is required"})
+}
+
+// appUpsertReq is the operator's application upsert body (operator-core UpsertRequest).
+type appUpsertReq struct {
+	Organization string   `json:"organization"`
+	Name         string   `json:"name"`
+	ClientId     string   `json:"clientId"`
+	ClientSecret string   `json:"clientSecret"`
+	GrantTypes   []string `json:"grantTypes"`
+	RedirectUris []string `json:"redirectUris"`
+	DisplayName  string   `json:"displayName"`
+	Cert         string   `json:"cert"`
+}
+
+// upsertApplication idempotently creates or updates a service-account application,
+// keyed by (Owner="admin", Name) — applications are platform-owned. Returns
+// {status:"ok", action:"created"|"updated", data:{name, organization, clientId,
+// clientSecret}} — the shape operator-core parses. A missing clientSecret preserves
+// the existing one (no rotation on a steady-state reconcile) or is generated.
+func upsertApplication(db orm.DB) zip.Handler {
+	return func(c *zip.Ctx) error {
+		if !authService(c) {
+			return unauthorized(c)
+		}
+		ctx := c.Context()
+		var req appUpsertReq
+		if err := decode(c, &req); err != nil {
+			return c.JSON(400, errResp("invalid body: "+err.Error()))
+		}
+		req.Name = strings.TrimSpace(req.Name)
+		if req.Name == "" {
+			return c.JSON(400, errResp("name is required"))
+		}
+
+		existing, err := store.GetApplicationByName(ctx, db, "admin", req.Name)
+		if err != nil {
+			return c.JSON(500, errResp("server_error"))
+		}
+		if req.ClientSecret == "" {
+			if existing != nil && existing.ClientSecret != "" {
+				req.ClientSecret = existing.ClientSecret
+			} else {
+				req.ClientSecret = randomSecret()
+			}
+		}
+		if req.ClientId == "" {
+			req.ClientId = req.Name // <org>-<app> convention: clientId == name
+		}
+
+		action := "created"
+		if existing != nil {
+			action = "updated"
+			existing.ClientId = req.ClientId
+			existing.ClientSecret = req.ClientSecret
+			existing.Organization = pick(req.Organization, existing.Organization)
+			if req.DisplayName != "" {
+				existing.DisplayName = req.DisplayName
+			}
+			if len(req.GrantTypes) > 0 {
+				existing.GrantTypes = req.GrantTypes
+			}
+			if len(req.RedirectUris) > 0 {
+				existing.RedirectUris = req.RedirectUris
+			}
+			if req.Cert != "" {
+				existing.Cert = req.Cert
+			}
+			existing.EnablePassword = true
+			if err := existing.UpdateCtx(ctx); err != nil {
+				return c.JSON(500, errResp("server_error"))
+			}
+		} else {
+			a := orm.New[schema.Application](db)
+			model := a.Model
+			a.Owner, a.Name = "admin", req.Name
+			a.ClientId, a.ClientSecret = req.ClientId, req.ClientSecret
+			a.Organization, a.DisplayName = req.Organization, pick(req.DisplayName, req.Name)
+			a.GrantTypes, a.RedirectUris, a.Cert = req.GrantTypes, req.RedirectUris, req.Cert
+			a.EnablePassword, a.ExpireInHours = true, 1
+			a.Model = model
+			a.SetId("admin/" + req.Name)
+			if err := a.CreateCtx(ctx); err != nil {
+				return c.JSON(500, errResp("server_error"))
+			}
+		}
+		return c.JSON(200, map[string]any{
+			"status": "ok", "action": action,
+			"data": map[string]any{
+				"name": req.Name, "organization": req.Organization,
+				"clientId": req.ClientId, "clientSecret": req.ClientSecret,
+			},
+		})
+	}
+}
+
+// userUpsertReq is the operator's user upsert body.
+type userUpsertReq struct {
+	Owner        string `json:"owner"`
+	Name         string `json:"name"`
+	DisplayName  string `json:"displayName"`
+	Email        string `json:"email"`
+	Phone        string `json:"phone"`
+	Password     string `json:"password"`
+	PasswordType string `json:"passwordType"`
+	IsAdmin      bool   `json:"isAdmin"`
+}
+
+// upsertUser idempotently creates or updates a user keyed by (Owner, Name). The
+// password is argon2id-hashed (SOTA; never stored plaintext); an empty password preserves
+// the existing credential. Returns {status:"ok", action, data:{owner, name}}.
+func upsertUser(db orm.DB) zip.Handler {
+	return func(c *zip.Ctx) error {
+		if !authService(c) {
+			return unauthorized(c)
+		}
+		ctx := c.Context()
+		var req userUpsertReq
+		if err := decode(c, &req); err != nil {
+			return c.JSON(400, errResp("invalid body: "+err.Error()))
+		}
+		req.Owner, req.Name = strings.TrimSpace(req.Owner), strings.TrimSpace(req.Name)
+		if req.Owner == "" || req.Name == "" {
+			return c.JSON(400, errResp("owner and name are required"))
+		}
+
+		var hash string
+		if req.Password != "" {
+			h, err := cred.Hash(req.Password)
+			if err != nil {
+				return c.JSON(500, errResp("server_error"))
+			}
+			hash = h
+		}
+
+		existing, err := store.GetUserByName(ctx, db, req.Owner, req.Name)
+		if err != nil {
+			return c.JSON(500, errResp("server_error"))
+		}
+		action := "created"
+		if existing != nil {
+			action = "updated"
+			existing.DisplayName = pick(req.DisplayName, existing.DisplayName)
+			existing.Email = pick(req.Email, existing.Email)
+			existing.Phone = pick(req.Phone, existing.Phone)
+			existing.IsAdmin = req.IsAdmin
+			if hash != "" {
+				existing.PasswordHash, existing.PasswordType, existing.PasswordSalt = hash, cred.TypeArgon2id, ""
+			}
+			existing.UpdatedTime = now()
+			if err := existing.UpdateCtx(ctx); err != nil {
+				return c.JSON(500, errResp("server_error"))
+			}
+		} else {
+			u := orm.New[schema.User](db)
+			model := u.Model
+			u.Owner, u.Name = req.Owner, req.Name
+			u.DisplayName, u.Email, u.Phone, u.IsAdmin = req.DisplayName, req.Email, req.Phone, req.IsAdmin
+			if hash != "" {
+				u.PasswordHash, u.PasswordType = hash, cred.TypeArgon2id
+			}
+			u.CreatedTime, u.UpdatedTime = now(), now()
+			u.Model = model
+			u.SetId(req.Owner + "/" + req.Name)
+			if err := u.CreateCtx(ctx); err != nil {
+				return c.JSON(500, errResp("server_error"))
+			}
+		}
+		return c.JSON(200, map[string]any{
+			"status": "ok", "action": action,
+			"data": map[string]any{"owner": req.Owner, "name": req.Name},
+		})
+	}
+}
+
+// ---- helpers ----
+
+// decode reads the raw JSON body (content-type independent) into v.
+func decode(c *zip.Ctx, v any) error {
+	body := c.Body()
+	if len(body) == 0 {
+		return errors.New("empty request body")
+	}
+	return json.Unmarshal(body, v)
+}
+
+func errResp(msg string) map[string]any { return map[string]any{"status": "error", "msg": msg} }
+
+// pick returns a if non-empty (trimmed), else b.
+func pick(a, b string) string {
+	if strings.TrimSpace(a) != "" {
+		return a
+	}
+	return b
+}
+
+// randomSecret returns a 32-byte URL-safe random client secret.
+func randomSecret() string {
+	b := make([]byte, 32)
+	_, _ = rand.Read(b)
+	return base64.RawURLEncoding.EncodeToString(b)
+}
+
+func now() string { return time.Now().UTC().Format(time.RFC3339) }

internal/bootstrap/bootstrap_test.go

@@ -0,0 +1,119 @@
+// Copyright 2026 Hanzo AI, Inc. All rights reserved.
+
+package bootstrap_test
+
+import (
+	"context"
+	"encoding/json"
+	"io"
+	"net/http/httptest"
+	"path/filepath"
+	"strings"
+	"testing"
+
+	"github.com/hanzoai/orm"
+	ormdb "github.com/hanzoai/orm/db"
+	"github.com/zap-proto/zip"
+
+	"github.com/hanzoai/iam/internal/routes"
+	"github.com/hanzoai/iam/internal/schema"
+	"github.com/hanzoai/iam/internal/store"
+)
+
+const svcToken = "svc-token-secret-value"
+
+func boot(t *testing.T) (*zip.App, orm.DB) {
+	t.Helper()
+	t.Setenv("IAM_SERVICE_TOKEN", svcToken)
+	_ = schema.Kinds()
+	dir := t.TempDir()
+	db, err := orm.OpenSQLite(&ormdb.SQLiteDBConfig{
+		Path:   filepath.Join(dir, "boot.db"),
+		Config: ormdb.SQLiteConfig{BusyTimeout: 5000, JournalMode: "WAL"},
+	})
+	if err != nil {
+		t.Fatalf("open sqlite: %v", err)
+	}
+	t.Cleanup(func() { _ = db.Close() })
+	app := zip.New(zip.Config{AppName: "bootstrap-test", DisableStartupMessage: true})
+	routes.Route(app, db)
+	app.Prepare()
+	return app, db
+}
+
+func post(t *testing.T, app *zip.App, path, token, body string) (int, map[string]any) {
+	t.Helper()
+	req := httptest.NewRequest("POST", path, strings.NewReader(body))
+	req.Host = "hanzo.id"
+	req.Header.Set("Content-Type", "application/json")
+	if token != "" {
+		req.Header.Set("Authorization", "Bearer "+token)
+	}
+	resp, err := app.Fiber().Test(req)
+	if err != nil {
+		t.Fatalf("POST %s: %v", path, err)
+	}
+	b, _ := io.ReadAll(resp.Body)
+	var m map[string]any
+	_ = json.Unmarshal(b, &m)
+	return resp.StatusCode, m
+}
+
+func TestUpsertApplication_createThenIdempotentUpdate(t *testing.T) {
+	app, db := boot(t)
+	body := `{"organization":"hanzo","name":"hanzo-kms","clientId":"hanzo-kms","grantTypes":["client_credentials"]}`
+
+	// Create — a secret is generated, action=created.
+	st, m := post(t, app, "/v1/iam/admin/applications/upsert", svcToken, body)
+	if st != 200 || m["status"] != "ok" || m["action"] != "created" {
+		t.Fatalf("create: status=%d body=%v", st, m)
+	}
+	data, _ := m["data"].(map[string]any)
+	secret, _ := data["clientSecret"].(string)
+	if secret == "" {
+		t.Fatalf("no clientSecret generated: %v", data)
+	}
+	if a, _ := store.GetApplicationByName(context.Background(), db, "admin", "hanzo-kms"); a == nil {
+		t.Fatalf("app not persisted")
+	}
+
+	// Re-upsert with NO secret — idempotent: action=updated, the SAME secret is
+	// preserved (no rotation storm on a steady-state reconcile).
+	st2, m2 := post(t, app, "/v1/iam/admin/applications/upsert", svcToken, body)
+	if st2 != 200 || m2["action"] != "updated" {
+		t.Fatalf("re-upsert: status=%d body=%v", st2, m2)
+	}
+	data2, _ := m2["data"].(map[string]any)
+	if data2["clientSecret"] != secret {
+		t.Fatalf("clientSecret rotated on idempotent re-upsert: %v → %v", secret, data2["clientSecret"])
+	}
+}
+
+func TestUpsertUser_createHashesPassword(t *testing.T) {
+	app, db := boot(t)
+	body := `{"owner":"hanzo","name":"svc-signer","password":"s3cret","isAdmin":false}`
+	st, m := post(t, app, "/v1/iam/admin/users/upsert", svcToken, body)
+	if st != 200 || m["action"] != "created" {
+		t.Fatalf("create user: status=%d body=%v", st, m)
+	}
+	u, _ := store.GetUserByName(context.Background(), db, "hanzo", "svc-signer")
+	if u == nil || u.PasswordHash == "" || u.PasswordHash == "s3cret" {
+		t.Fatalf("password not hashed: %+v", u)
+	}
+	if u.PasswordType != "argon2id" {
+		t.Fatalf("passwordType = %q, want argon2id", u.PasswordType)
+	}
+}
+
+func TestBootstrap_requiresServiceToken(t *testing.T) {
+	app, _ := boot(t)
+	body := `{"name":"x"}`
+	// No token → 401.
+	if st, _ := post(t, app, "/v1/iam/admin/applications/upsert", "", body); st != 401 {
+		t.Fatalf("no-token status = %d, want 401", st)
+	}
+	// Wrong token → 401.
+	if st, _ := post(t, app, "/v1/iam/admin/applications/upsert", "wrong-token", body); st != 401 {
+		t.Fatalf("wrong-token status = %d, want 401", st)
+	}
+}

internal/certs/certs.go

@@ -0,0 +1,177 @@
+// Copyright 2026 Hanzo AI, Inc. All rights reserved.
+
+// Package certs serves the IAM v2 CRUD surface for the `certs` entity: a
+// signing / TLS certificate owner-scoped by (owner, name). Every operation is a
+// typed zip handler over hanzoai/orm; the orm string key is "owner/name". Reads
+// scope to one owner (organization); writes address one cert by its (owner,
+// name) key.
+package certs
+
+import (
+	"context"
+	"errors"
+	"time"
+
+	"github.com/hanzoai/orm"
+	"github.com/zap-proto/zip"
+
+	"github.com/hanzoai/iam/internal/authz"
+	"github.com/hanzoai/iam/internal/schema"
+)
+
+// Handler binds the certs operations to one orm store.
+type Handler struct {
+	db orm.DB
+}
+
+// Route registers the certs CRUD routes on app against db. Reads are zip.Get,
+// writes are zip.Post; the create/update body is the schema.Cert row itself, so
+// the wire contract and the stored entity never drift.
+func Route(app *zip.App, db orm.DB) {
+	h := &Handler{db: db}
+	zip.Get(app, "/v1/iam/certs", h.List, zip.WithSummary("List certs for an owner"), zip.WithTags("certs"))
+	zip.Post(app, "/v1/iam/certs", h.Create, zip.WithSummary("Create a cert"), zip.WithTags("certs"))
+	zip.Post(app, "/v1/iam/certs/get", h.Get, zip.WithSummary("Get one cert"), zip.WithTags("certs"))
+	zip.Post(app, "/v1/iam/certs/update", h.Update, zip.WithSummary("Update a cert"), zip.WithTags("certs"))
+	zip.Post(app, "/v1/iam/certs/delete", h.Delete, zip.WithSummary("Delete a cert"), zip.WithTags("certs"))
+}
+
+// Ref addresses one cert by its owner-scoped natural key.
+type Ref struct {
+	Owner string `json:"owner"`
+	Name  string `json:"name"`
+}
+
+// ListInput scopes a listing to one owner (organization).
+type ListInput struct {
+	Owner string `json:"owner"`
+}
+
+// ListOutput is the owner-scoped page of certs.
+type ListOutput struct {
+	Certs []*schema.Cert `json:"certs"`
+	Total int            `json:"total"`
+}
+
+// DeleteOutput reports the delete result.
+type DeleteOutput struct {
+	Deleted bool `json:"deleted"`
+}
+
+// key builds the orm string key from the (owner, name) natural key.
+func key(owner, name string) string { return owner + "/" + name }
+
+// List returns the certs the caller may read, newest first, secrets masked. The
+// owner is resolved by authz.Scope from the authenticated principal — a tenant
+// reads only its own org, a SuperAdmin reads the owner it asks for — so a query
+// parameter can never widen a listing beyond the bearer's authority.
+func (h *Handler) List(ctx context.Context, in *ListInput) (*ListOutput, error) {
+	owner, err := authz.Scope(ctx, in.Owner)
+	if err != nil {
+		return nil, err
+	}
+	q := orm.TypedQuery[schema.Cert](h.db)
+	if owner != "" {
+		q = q.Filter("owner", owner)
+	}
+	certs, err := q.Order("-createdTime").GetAll(ctx)
+	if err != nil {
+		return nil, zip.ErrInternal(err.Error())
+	}
+	out := make([]*schema.Cert, len(certs))
+	for i, c := range certs {
+		out[i] = c.Mask()
+	}
+	return &ListOutput{Certs: out, Total: len(out)}, nil
+}
+
+// Get returns one cert addressed by (owner, name), secrets masked.
+func (h *Handler) Get(_ context.Context, in *Ref) (*schema.Cert, error) {
+	if in.Owner == "" || in.Name == "" {
+		return nil, zip.ErrBadRequest("owner and name are required")
+	}
+	cert, err := orm.Get[schema.Cert](h.db, key(in.Owner, in.Name))
+	if err != nil {
+		return nil, mapErr(err)
+	}
+	return cert.Mask(), nil
+}
+
+// Create persists a new cert. It rejects a duplicate (owner, name) and stamps
+// CreatedTime when the caller leaves it blank.
+func (h *Handler) Create(ctx context.Context, in *schema.Cert) (*schema.Cert, error) {
+	if in.Owner == "" || in.Name == "" {
+		return nil, zip.ErrBadRequest("owner and name are required")
+	}
+	switch _, err := orm.Get[schema.Cert](h.db, key(in.Owner, in.Name)); {
+	case err == nil:
+		return nil, zip.ErrConflict("cert already exists")
+	case !errors.Is(err, orm.ErrNotFound):
+		return nil, zip.ErrInternal(err.Error())
+	}
+
+	// orm.New wires the store and applies defaults; overlay the decoded row,
+	// then restore the wired Model so its db handle survives the assignment.
+	cert := orm.New[schema.Cert](h.db)
+	model := cert.Model
+	*cert = *in
+	cert.Model = model
+	if cert.CreatedTime == "" {
+		cert.CreatedTime = time.Now().UTC().Format(time.RFC3339)
+	}
+	cert.SetId(key(in.Owner, in.Name))
+
+	if err := cert.CreateCtx(ctx); err != nil {
+		return nil, zip.ErrInternal(err.Error())
+	}
+	return cert, nil
+}
+
+// Update overwrites a cert's mutable fields. Identity (owner, name) and the
+// CreatedTime stamp are immutable; a missing cert is a 404.
+func (h *Handler) Update(ctx context.Context, in *schema.Cert) (*schema.Cert, error) {
+	if in.Owner == "" || in.Name == "" {
+		return nil, zip.ErrBadRequest("owner and name are required")
+	}
+	cert, err := orm.Get[schema.Cert](h.db, key(in.Owner, in.Name))
+	if err != nil {
+		return nil, mapErr(err)
+	}
+	// Keep the loaded Model (id, createdAt, key, snapshot) and the original
+	// creation stamp; overlay the decoded domain fields onto them.
+	model := cert.Model
+	created := cert.CreatedTime
+	*cert = *in
+	cert.Model = model
+	cert.Owner, cert.Name = in.Owner, in.Name
+	if created != "" {
+		cert.CreatedTime = created
+	}
+	if err := cert.UpdateCtx(ctx); err != nil {
+		return nil, zip.ErrInternal(err.Error())
+	}
+	return cert, nil
+}
+
+// Delete removes one cert addressed by (owner, name).
+func (h *Handler) Delete(ctx context.Context, in *Ref) (*DeleteOutput, error) {
+	if in.Owner == "" || in.Name == "" {
+		return nil, zip.ErrBadRequest("owner and name are required")
+	}
+	cert, err := orm.Get[schema.Cert](h.db, key(in.Owner, in.Name))
+	if err != nil {
+		return nil, mapErr(err)
+	}
+	if err := cert.DeleteCtx(ctx); err != nil {
+		return nil, zip.ErrInternal(err.Error())
+	}
+	return &DeleteOutput{Deleted: true}, nil
+}
+
+// mapErr translates an orm lookup error into the matching HTTP status.
+func mapErr(err error) error {
+	if errors.Is(err, orm.ErrNotFound) {
+		return zip.ErrNotFound("cert not found")
+	}
+	return zip.ErrInternal(err.Error())
+}

internal/compare/compare.go

@@ -44,6 +44,8 @@ var mapping = []pair{
 	{"token", "tokens"},
 	{"record", "audit_logs"},
 	{"invitation", "invitations"},
+	{"web3_nonce", "challenges"},
+	{"wallet_link", "wallets"},
 }
 
 // Run writes a tab-aligned per-entity drift report to w. ctx bounds every

internal/compat/aliases.go

@@ -0,0 +1,212 @@
+// Copyright 2026 Hanzo AI, Inc. All rights reserved.
+
+// Package compat serves the Casdoor VERB surface (get-users, get-organizations,
+// …) over iam2's orm store, in the v1 Response envelope. It exists because every
+// live consumer — the console admin BFF, the gateway admin-api, the hanzo.id
+// portal — hard-codes the Casdoor verb spellings and the `{status,data,data2}`
+// envelope, while iam2's native surface is REST (`/v1/iam/users`,
+// `/v1/iam/users/get`). Without these aliases a backend swap 404s every console
+// IAM page. The aliases are a thin routing + envelope layer over the SAME orm
+// store and the SAME schema.Mask redaction the REST handlers use — no CRUD and
+// no redaction is reimplemented here.
+//
+// Authorization is NOT reimplemented either. These paths are not in authz's
+// public allowlist, so the Guard (app.Use, mounted first) authenticates every
+// request AND authorizes the read against the exact (owner, name) it addresses —
+// resolved by the same authz.ReadTarget the handlers use, so a handler can never
+// reach a row the Guard did not authorize. Each handler then re-scopes the query
+// owner through authz.Scope: a SuperAdmin may list any owner (empty = all
+// tenants), everyone else is pinned to their own org, so a request parameter can
+// never widen a read past the caller's authority.
+package compat
+
+import (
+	"errors"
+	"strconv"
+
+	"github.com/hanzoai/orm"
+	"github.com/zap-proto/zip"
+
+	"github.com/hanzoai/iam/internal/authz"
+	"github.com/hanzoai/iam/internal/httpx"
+	"github.com/hanzoai/iam/internal/schema"
+)
+
+// Route registers the Casdoor read-verb aliases. The mask argument is the
+// entity's schema.Mask method (the ONE redaction contract) for entities that
+// carry secrets, or nil for those that do not — nil means "no field to strip",
+// not "skip a needed redaction". Writes ride a companion file.
+func Route(app *zip.App, db orm.DB) {
+	// List reads — `?owner=&p=&pageSize=` (Casdoor shape). Owner-scoped by authz.
+	app.Get("/v1/iam/get-organizations", listHandler(db, (*schema.Organization).Mask))
+	app.Get("/v1/iam/get-users", listHandler(db, (*schema.User).Mask))
+	app.Get("/v1/iam/get-global-users", listHandler(db, (*schema.User).Mask))
+	app.Get("/v1/iam/get-applications", listHandler(db, (*schema.Application).Mask))
+	app.Get("/v1/iam/get-providers", listHandler(db, (*schema.Provider).Mask))
+	app.Get("/v1/iam/get-certs", listHandler(db, (*schema.Cert).Mask))
+	app.Get("/v1/iam/get-roles", listHandler[schema.Role](db, nil))
+	app.Get("/v1/iam/get-permissions", listHandler[schema.Permission](db, nil))
+	app.Get("/v1/iam/get-invitations", listHandler[schema.Invitation](db, nil))
+	app.Get("/v1/iam/get-records", listHandler[schema.AuditLog](db, nil))
+
+	// Single reads — `?id=<owner>/<name>` (or `?owner=&name=`).
+	app.Get("/v1/iam/get-organization", getHandler(db, (*schema.Organization).Mask))
+	app.Get("/v1/iam/get-user", getHandler(db, (*schema.User).Mask))
+	app.Get("/v1/iam/get-application", getHandler(db, (*schema.Application).Mask))
+	app.Get("/v1/iam/get-provider", getHandler(db, (*schema.Provider).Mask))
+	app.Get("/v1/iam/get-cert", getHandler(db, (*schema.Cert).Mask))
+	app.Get("/v1/iam/get-role", getHandler[schema.Role](db, nil))
+	app.Get("/v1/iam/get-permission", getHandler[schema.Permission](db, nil))
+
+	// get-organization-projects — the console ScopeSwitcher's project list, keyed by
+	// ?organization= (not ?owner=). Its target rides in ?organization, which the Guard
+	// does not inspect generically, so this path is handler-authorized (authz's
+	// handlerAuthorizedPrefixes): the Guard authenticates, and this handler scopes the
+	// requested org through authz.Scope — a non-super is pinned to its own org, so any
+	// authenticated member lists exactly its own org's projects (the ScopeSwitcher is
+	// shown to every user, not only admins, so this read is intentionally not
+	// admin-gated the way the generic listers are).
+	app.Get("/v1/iam/get-organization-projects", orgProjectsHandler(db))
+
+	// The Casdoor WRITE verbs (companion file), over the same store + authz seam.
+	routeWrites(app, db)
+}
+
+// orgProjectsHandler serves get-organization-projects: the org's project list for
+// the console ScopeSwitcher. The requested org rides in ?organization= (or ?owner=
+// as a fallback); authz.Scope pins a non-super to its own org, so a request
+// parameter can never widen the read past the caller's tenant. Projects carry no
+// secrets, so no Mask is applied.
+func orgProjectsHandler(db orm.DB) zip.Handler {
+	return func(c *zip.Ctx) error {
+		ctx := c.Context()
+		requested := c.Query("organization")
+		if requested == "" {
+			requested = c.Query("owner")
+		}
+		owner, err := authz.Scope(ctx, requested)
+		if err != nil {
+			return httpx.Err(c, err.Error())
+		}
+		q := orm.TypedQuery[schema.Project](db)
+		if owner != "" {
+			q = q.Filter("Owner=", owner)
+		}
+		rows, err := q.Order("Name").GetAll(ctx)
+		if err != nil {
+			return httpx.Err(c, err.Error())
+		}
+		return httpx.Ok(c, rows)
+	}
+}
+
+// listHandler serves a Casdoor get-<entities> list for one orm kind: it scopes
+// the owner through authz, queries the store, redacts each row via the entity's
+// Mask, and wraps the result in the v1 envelope. Per the v1 contract a list
+// paginates ONLY when BOTH `p` and `pageSize` are present — then the total rides
+// in data2; otherwise the full owner-scoped set is returned with no data2.
+//
+// Scoping note (intentional, fail-closed): iam2's ownership model is mixed —
+// users/roles/permissions are owned by their tenant org, while organizations/
+// applications/providers/certs are platform-owned (Owner "admin"). A SuperAdmin
+// (Scope → the requested owner, empty = all) therefore lists every entity, which
+// is the console-admin path. A non-super is pinned by Scope to its own org, so it
+// lists its tenant-owned entities correctly and is refused the platform-owned
+// lists at the Guard (owner "" or "admin" both deny) — a safe 403, never another
+// tenant's rows. Non-super, membership-scoped views of the platform-owned
+// entities (e.g. an org console's own app list keyed on Application.Organization)
+// are a separate, additive surface, not a silent behavior of this generic lister.
+func listHandler[T any](db orm.DB, mask func(*T) *T) zip.Handler {
+	return func(c *zip.Ctx) error {
+		ctx := c.Context()
+		owner, err := authz.Scope(ctx, c.Query("owner"))
+		if err != nil {
+			return httpx.Err(c, err.Error())
+		}
+
+		base := func() *orm.ModelQuery[T] {
+			q := orm.TypedQuery[T](db)
+			if owner != "" {
+				q = q.Filter("Owner=", owner)
+			}
+			return q
+		}
+
+		page, size, paginated := pageParams(c)
+		if !paginated {
+			rows, err := base().Order("Name").GetAll(ctx)
+			if err != nil {
+				return httpx.Err(c, err.Error())
+			}
+			return httpx.Ok(c, maskAll(rows, mask))
+		}
+
+		total, err := base().Count(ctx)
+		if err != nil {
+			return httpx.Err(c, err.Error())
+		}
+		rows, err := base().Order("Name").Limit(size).Offset((page - 1) * size).GetAll(ctx)
+		if err != nil {
+			return httpx.Err(c, err.Error())
+		}
+		return c.JSON(200, httpx.Response{Status: "ok", Data: maskAll(rows, mask), Data2: total})
+	}
+}
+
+// getHandler serves a Casdoor get-<entity> single read. The target is resolved
+// by authz.ReadTarget (the same extraction the Guard authorized with), then the
+// owner is re-scoped through authz.Scope so a non-super can never read another
+// tenant's row even if it spells one in `?id`.
+func getHandler[T any](db orm.DB, mask func(*T) *T) zip.Handler {
+	return func(c *zip.Ctx) error {
+		ctx := c.Context()
+		owner, name := authz.ReadTarget(c)
+		if name == "" {
+			return httpx.Err(c, "id (owner/name) or name is required")
+		}
+		scoped, err := authz.Scope(ctx, owner)
+		if err != nil {
+			return httpx.Err(c, err.Error())
+		}
+		row, err := orm.TypedQuery[T](db).Filter("Owner=", scoped).Filter("Name=", name).First()
+		if errors.Is(err, orm.ErrNotFound) {
+			return httpx.Err(c, "the entity does not exist")
+		}
+		if err != nil {
+			return httpx.Err(c, err.Error())
+		}
+		if mask != nil {
+			row = mask(row)
+		}
+		return httpx.Ok(c, row)
+	}
+}
+
+// maskAll redacts every row through the entity's Mask (a no-op when the entity
+// has no secrets, i.e. mask is nil). Mask returns a copy, so the slice is
+// rewritten in place with the masked copies.
+func maskAll[T any](rows []*T, mask func(*T) *T) []*T {
+	if mask == nil {
+		return rows
+	}
+	for i, r := range rows {
+		rows[i] = mask(r)
+	}
+	return rows
+}
+
+// pageParams returns (page, size, paginated). A list paginates ONLY when BOTH
+// `p` and `pageSize` are present and positive; otherwise the caller returns the
+// full set (v1 semantics).
+func pageParams(c *zip.Ctx) (page, size int, paginated bool) {
+	pp, ps := c.Query("p"), c.Query("pageSize")
+	if pp == "" || ps == "" {
+		return 0, 0, false
+	}
+	page, _ = strconv.Atoi(pp)
+	size, _ = strconv.Atoi(ps)
+	if page <= 0 || size <= 0 {
+		return 0, 0, false
+	}
+	return page, size, true
+}

internal/compat/aliases_test.go

@@ -0,0 +1,370 @@
+// Copyright 2026 Hanzo AI, Inc. All rights reserved.
+
+package compat_test
+
+// End-to-end tests for the Casdoor verb aliases, driven through the REAL mounted
+// router (routes.Mount installs the authz Guard between the public group and the
+// authed routes; compat is registered after it, so gated). Every
+// case is a wire request a live console/gateway client sends. The assertions are
+// the three contracts a backend swap depends on: the v1 {status,data,data2}
+// envelope shape, owner-scoping that no request parameter can widen, and — the
+// security one — that NO secret material ever appears in a response body.
+
+import (
+	"context"
+	"crypto/rand"
+	"crypto/rsa"
+	"crypto/x509"
+	"encoding/json"
+	"encoding/pem"
+	"io"
+	"net/http/httptest"
+	"path/filepath"
+	"strings"
+	"testing"
+	"time"
+
+	"github.com/golang-jwt/jwt/v5"
+
+	"github.com/hanzoai/orm"
+	ormdb "github.com/hanzoai/orm/db"
+	"github.com/zap-proto/zip"
+
+	"github.com/hanzoai/iam/internal/routes"
+	"github.com/hanzoai/iam/internal/schema"
+)
+
+const signingKid = "cert-hanzo"
+
+// Distinctive secret sentinels: if any of these strings appears in ANY response
+// body, redaction failed and a real credential leaked.
+const (
+	secretUserHash   = "$argon2id$SENTINEL_USER_PW_HASH"
+	secretOrgMaster  = "SENTINEL_ORG_MASTER_PW"
+	secretAppClient  = "SENTINEL_APP_CLIENT_SECRET"
+	secretProvClient = "SENTINEL_PROVIDER_CLIENT_SECRET"
+)
+
+type harness struct {
+	app *zip.App
+	key *rsa.PrivateKey
+	db  orm.DB
+}
+
+func newHarness(t *testing.T) *harness {
+	t.Helper()
+	_ = schema.Kinds()
+	key, err := rsa.GenerateKey(rand.Reader, 2048)
+	if err != nil {
+		t.Fatalf("rsa: %v", err)
+	}
+	dir := t.TempDir()
+	db, err := orm.OpenSQLite(&ormdb.SQLiteDBConfig{
+		Path:   filepath.Join(dir, "compat.db"),
+		Config: ormdb.SQLiteConfig{BusyTimeout: 5000, JournalMode: "WAL"},
+	})
+	if err != nil {
+		t.Fatalf("open sqlite: %v", err)
+	}
+	t.Cleanup(func() { _ = db.Close() })
+
+	// Trust anchor (admin-owned RS256 signing cert = JWKS kid).
+	seedCert(t, db, "admin", signingKid, pemOf(t, key))
+
+	// Principals across two orgs: a SuperAdmin, an org-admin, a regular user.
+	seedUser(t, db, "admin", "root", true)   // SuperAdmin (org == admin)
+	seedUser(t, db, "hanzo", "boss", true)   // org-admin of hanzo
+	seedUser(t, db, "hanzo", "alice", false) // regular user in hanzo
+	seedUser(t, db, "orgb", "bob", true)     // org-admin of a second tenant
+
+	// Secret-bearing rows: every one carries a sentinel that must never surface.
+	// users already seeded carry a password hash sentinel (set in seedUser).
+	seedOrg(t, db, "hanzo")            // Owner="admin", Name="hanzo", MasterPassword sentinel
+	seedApp(t, db, "hanzo-console")    // Owner="admin", ClientSecret sentinel
+	seedProvider(t, db, "provider-gh") // Owner="admin", ClientSecret sentinel
+
+	app := zip.New(zip.Config{AppName: "compat-test", DisableStartupMessage: true})
+	routes.Route(app, db)
+	app.Prepare()
+	return &harness{app: app, key: key, db: db}
+}
+
+func (h *harness) token(t *testing.T, sub string) string {
+	t.Helper()
+	tok := jwt.NewWithClaims(jwt.SigningMethodRS256, jwt.MapClaims{
+		"sub": sub,
+		"iat": time.Now().Add(-time.Minute).Unix(),
+		"exp": time.Now().Add(time.Hour).Unix(),
+	})
+	tok.Header["kid"] = signingKid
+	s, err := tok.SignedString(h.key)
+	if err != nil {
+		t.Fatalf("sign: %v", err)
+	}
+	return s
+}
+
+// get issues a GET through the real router and returns (status, rawBody).
+func (h *harness) get(t *testing.T, path, bearer string) (int, string) {
+	t.Helper()
+	req := httptest.NewRequest("GET", path, nil)
+	req.Host = "hanzo.id"
+	if bearer != "" {
+		req.Header.Set("Authorization", "Bearer "+bearer)
+	}
+	resp, err := h.app.Fiber().Test(req)
+	if err != nil {
+		t.Fatalf("GET %s: %v", path, err)
+	}
+	b, _ := io.ReadAll(resp.Body)
+	_ = resp.Body.Close()
+	return resp.StatusCode, string(b)
+}
+
+// envelope is the v1 Response shape the clients parse.
+type envelope struct {
+	Status string            `json:"status"`
+	Msg    string            `json:"msg"`
+	Data   []json.RawMessage `json:"data"`
+	Data2  json.RawMessage   `json:"data2"`
+}
+
+// ---- assertions ------------------------------------------------------------
+
+func TestGetUsers_super_envelopeAndNoSecretLeak(t *testing.T) {
+	h := newHarness(t)
+	status, body := h.get(t, "/v1/iam/get-users", h.token(t, "admin/root"))
+	if status != 200 {
+		t.Fatalf("status = %d, want 200; body=%s", status, body)
+	}
+	assertNoSecretLeak(t, body)
+
+	var env envelope
+	if err := json.Unmarshal([]byte(body), &env); err != nil {
+		t.Fatalf("body is not the v1 envelope: %v; body=%s", err, body)
+	}
+	if env.Status != "ok" {
+		t.Fatalf("status field = %q, want ok", env.Status)
+	}
+	// SuperAdmin, no owner filter → every user across every org (4 seeded).
+	if len(env.Data) != 4 {
+		t.Fatalf("super get-users returned %d users, want 4", len(env.Data))
+	}
+}
+
+func TestGetUsers_paged_data2IsTotal(t *testing.T) {
+	h := newHarness(t)
+	_, body := h.get(t, "/v1/iam/get-users?p=1&pageSize=2", h.token(t, "admin/root"))
+	assertNoSecretLeak(t, body)
+
+	var env envelope
+	if err := json.Unmarshal([]byte(body), &env); err != nil {
+		t.Fatalf("not the v1 envelope: %v", err)
+	}
+	if len(env.Data) != 2 {
+		t.Fatalf("page 1 pageSize 2 returned %d rows, want 2", len(env.Data))
+	}
+	// data2 carries the FULL owner-scoped total (4), not the page length.
+	var total int
+	if err := json.Unmarshal(env.Data2, &total); err != nil {
+		t.Fatalf("data2 is not an int total: %v (data2=%s)", err, env.Data2)
+	}
+	if total != 4 {
+		t.Fatalf("data2 total = %d, want 4", total)
+	}
+}
+
+func TestGetUsers_unpaged_hasNoData2(t *testing.T) {
+	h := newHarness(t)
+	_, body := h.get(t, "/v1/iam/get-users", h.token(t, "admin/root"))
+	// v1 omits data2 entirely when the list is not paginated.
+	if strings.Contains(body, "\"data2\"") {
+		t.Fatalf("unpaged list must omit data2; body=%s", body)
+	}
+}
+
+func TestGetOrganizations_super_listsAll_masked(t *testing.T) {
+	h := newHarness(t)
+	status, body := h.get(t, "/v1/iam/get-organizations", h.token(t, "admin/root"))
+	if status != 200 {
+		t.Fatalf("status = %d; body=%s", status, body)
+	}
+	assertNoSecretLeak(t, body)
+	// The masked org keeps its "***" sentinel, proving Mask ran (not the raw pw).
+	if !strings.Contains(body, "***") {
+		t.Fatalf("expected the masked '***' marker in the org list; body=%s", body)
+	}
+}
+
+func TestGetApplications_super_noClientSecret(t *testing.T) {
+	h := newHarness(t)
+	status, body := h.get(t, "/v1/iam/get-applications", h.token(t, "admin/root"))
+	if status != 200 {
+		t.Fatalf("status=%d body=%s", status, body)
+	}
+	assertNoSecretLeak(t, body)
+}
+
+func TestGetProviders_super_noClientSecret(t *testing.T) {
+	h := newHarness(t)
+	status, body := h.get(t, "/v1/iam/get-providers", h.token(t, "admin/root"))
+	if status != 200 {
+		t.Fatalf("status=%d body=%s", status, body)
+	}
+	assertNoSecretLeak(t, body)
+}
+
+func TestGetUser_byId_super(t *testing.T) {
+	h := newHarness(t)
+	// The Casdoor `?id=<owner>/<name>` shape — resolved by authz.ReadTarget.
+	status, body := h.get(t, "/v1/iam/get-user?id=hanzo/alice", h.token(t, "admin/root"))
+	if status != 200 {
+		t.Fatalf("status=%d body=%s", status, body)
+	}
+	assertNoSecretLeak(t, body)
+	if !strings.Contains(body, "alice") {
+		t.Fatalf("get-user?id=hanzo/alice did not return alice; body=%s", body)
+	}
+}
+
+func TestGetUsers_orgAdmin_scopedToOwnOrg(t *testing.T) {
+	h := newHarness(t)
+	// An org-admin MUST pass its own owner (the Guard denies an empty owner for a
+	// non-super); it then sees only its org's users.
+	status, body := h.get(t, "/v1/iam/get-users?owner=hanzo", h.token(t, "hanzo/boss"))
+	if status != 200 {
+		t.Fatalf("status=%d body=%s", status, body)
+	}
+	var env envelope
+	_ = json.Unmarshal([]byte(body), &env)
+	if len(env.Data) != 2 { // hanzo/boss + hanzo/alice, never orgb/bob
+		t.Fatalf("org-admin get-users?owner=hanzo returned %d, want 2 (own org only)", len(env.Data))
+	}
+	assertNoSecretLeak(t, body)
+}
+
+func TestGetUsers_orgAdmin_crossTenantDenied(t *testing.T) {
+	h := newHarness(t)
+	// hanzo's admin cannot list orgb's users — the Guard refuses a foreign owner.
+	status, _ := h.get(t, "/v1/iam/get-users?owner=orgb", h.token(t, "hanzo/boss"))
+	if status != 403 {
+		t.Fatalf("cross-tenant get-users status = %d, want 403", status)
+	}
+}
+
+func TestGetUser_byId_crossTenantDenied(t *testing.T) {
+	h := newHarness(t)
+	// The `?id=` fallback must not open a cross-tenant hole: hanzo's admin naming
+	// orgb/bob is refused at the Guard, exactly as the ?owner= form is.
+	status, _ := h.get(t, "/v1/iam/get-user?id=orgb/bob", h.token(t, "hanzo/boss"))
+	if status != 403 {
+		t.Fatalf("cross-tenant get-user?id=orgb/bob status = %d, want 403", status)
+	}
+}
+
+func TestGetUsers_regularUser_cannotList(t *testing.T) {
+	h := newHarness(t)
+	// A non-admin user may not enumerate its org's users (the self-service rule is
+	// a single-record read, never a list).
+	status, _ := h.get(t, "/v1/iam/get-users?owner=hanzo", h.token(t, "hanzo/alice"))
+	if status != 403 {
+		t.Fatalf("regular-user get-users status = %d, want 403", status)
+	}
+}
+
+func TestGetApplications_nonSuper_deniedOnPlatformOwned(t *testing.T) {
+	h := newHarness(t)
+	// Applications are platform-owned (Owner "admin"); a non-super gets a safe 403
+	// at the Guard, never another tenant's app rows.
+	status, _ := h.get(t, "/v1/iam/get-applications", h.token(t, "hanzo/boss"))
+	if status != 403 {
+		t.Fatalf("non-super get-applications status = %d, want 403", status)
+	}
+}
+
+func TestCompatAliases_requireAuth(t *testing.T) {
+	h := newHarness(t)
+	// No bearer → the Guard fails closed (compat is registered after the Guard).
+	if status, _ := h.get(t, "/v1/iam/get-users", ""); status != 401 {
+		t.Fatalf("unauthenticated get-users status = %d, want 401", status)
+	}
+}
+
+// assertNoSecretLeak fails if any seeded secret sentinel appears in the body —
+// the single most important property of the whole layer.
+func assertNoSecretLeak(t *testing.T, body string) {
+	t.Helper()
+	for _, secret := range []string{secretUserHash, secretOrgMaster, secretAppClient, secretProvClient} {
+		if strings.Contains(body, secret) {
+			t.Fatalf("SECRET LEAK: %q appeared in a response body:\n%s", secret, body)
+		}
+	}
+}
+
+// ---- seed helpers ----------------------------------------------------------
+
+func seedCert(t *testing.T, db orm.DB, owner, name, privPEM string) {
+	t.Helper()
+	c := orm.New[schema.Cert](db)
+	c.Owner, c.Name = owner, name
+	c.CryptoAlgorithm = "RS256"
+	c.PrivateKey = privPEM
+	c.SetId(owner + "/" + name)
+	if err := c.CreateCtx(context.Background()); err != nil {
+		t.Fatalf("seed cert: %v", err)
+	}
+}
+
+func seedUser(t *testing.T, db orm.DB, owner, name string, admin bool) {
+	t.Helper()
+	u := orm.New[schema.User](db)
+	u.Owner, u.Name = owner, name
+	u.IsAdmin = admin
+	u.PasswordHash = secretUserHash // the sentinel that must never surface
+	u.PasswordType = "argon2id"
+	u.SetId(owner + "/" + name)
+	if err := u.CreateCtx(context.Background()); err != nil {
+		t.Fatalf("seed user: %v", err)
+	}
+}
+
+func seedOrg(t *testing.T, db orm.DB, name string) {
+	t.Helper()
+	o := orm.New[schema.Organization](db)
+	o.Owner, o.Name = "admin", name // orgs are platform-owned
+	o.MasterPassword = secretOrgMaster
+	o.SetId("admin/" + name)
+	if err := o.CreateCtx(context.Background()); err != nil {
+		t.Fatalf("seed org: %v", err)
+	}
+}
+
+func seedApp(t *testing.T, db orm.DB, name string) {
+	t.Helper()
+	a := orm.New[schema.Application](db)
+	a.Owner, a.Name = "admin", name
+	a.Organization = "hanzo"
+	a.ClientSecret = secretAppClient
+	a.SetId("admin/" + name)
+	if err := a.CreateCtx(context.Background()); err != nil {
+		t.Fatalf("seed app: %v", err)
+	}
+}
+
+func seedProvider(t *testing.T, db orm.DB, name string) {
+	t.Helper()
+	p := orm.New[schema.Provider](db)
+	p.Owner, p.Name = "admin", name
+	p.ClientSecret = secretProvClient
+	p.SetId("admin/" + name)
+	if err := p.CreateCtx(context.Background()); err != nil {
+		t.Fatalf("seed provider: %v", err)
+	}
+}
+
+func pemOf(t *testing.T, k *rsa.PrivateKey) string {
+	t.Helper()
+	return string(pem.EncodeToMemory(&pem.Block{
+		Type: "RSA PRIVATE KEY", Bytes: x509.MarshalPKCS1PrivateKey(k),
+	}))
+}

internal/compat/writes.go

@@ -0,0 +1,150 @@
+// Copyright 2026 Hanzo AI, Inc. All rights reserved.
+
+package compat
+
+import (
+	"context"
+
+	"github.com/hanzoai/orm"
+	"github.com/zap-proto/zip"
+
+	"github.com/hanzoai/iam/internal/applications"
+	"github.com/hanzoai/iam/internal/httpx"
+	"github.com/hanzoai/iam/internal/organizations"
+	"github.com/hanzoai/iam/internal/projects"
+	"github.com/hanzoai/iam/internal/providers"
+	"github.com/hanzoai/iam/internal/roles"
+	"github.com/hanzoai/iam/internal/schema"
+	"github.com/hanzoai/iam/internal/users"
+)
+
+// The Casdoor WRITE verbs (add-organization, add-user, update-user,
+// update-application) the console admin BFF hard-codes, served over the SAME entity
+// Create/Update logic as the REST surface — no CRUD is reimplemented here. Each is a
+// TYPED zip op (not a raw handler), which is what preserves authorization: the ONE
+// authz seam (app.Authorize) runs at every typed op's invoke on the DECODED input, so
+// a write alias is authorized against the exact (owner, name) it will bind — a super
+// for a platform-owned org/app, an org-admin for its own users — identical to the REST
+// twin. The result is wrapped in the casibase {status,msg,data} envelope the clients
+// parse; the data is the REDACTED entity (each Create/Update returns Mask()).
+//
+// Read verbs ride aliases.go; these are the "Writes ride a companion file" half.
+
+// routeWrites registers the Casdoor write-verb aliases on app. Called from Route
+// (aliases.go) so reads and writes share the one Guard/Authorize seam.
+func routeWrites(app *zip.App, db orm.DB) {
+	orgs := organizations.NewOrganizationAPI(db)
+	usersAPI := users.New(db)
+	appCreate, appUpdate, appDelete := applications.Create(db), applications.Update(db), applications.Delete(db)
+	rolesH := roles.New(db)
+	projectsH := projects.New(db)
+	provAdd, provUpdate, provDelete := providers.Add(db), providers.Update(db), providers.Delete(db)
+
+	zip.Post(app, "/v1/iam/add-organization",
+		func(ctx context.Context, in *organizations.CreateOrganizationInput) (*httpx.Response, error) {
+			return envelope(orgs.Create(ctx, in))
+		},
+		zip.WithOperationID("addOrganization"), zip.WithSummary("Create an organization (Casdoor verb)"), zip.WithTags("compat"))
+
+	zip.Post(app, "/v1/iam/add-user",
+		func(ctx context.Context, in *userBody) (*httpx.Response, error) {
+			return envelope(usersAPI.Create(ctx, &users.CreateInput{User: in.User, Password: in.Password}))
+		},
+		zip.WithOperationID("addUser"), zip.WithSummary("Create a user (Casdoor verb)"), zip.WithTags("compat"))
+
+	zip.Post(app, "/v1/iam/update-user",
+		func(ctx context.Context, in *userBody) (*httpx.Response, error) {
+			return envelope(usersAPI.Update(ctx, &users.UpdateInput{User: in.User, Password: in.Password}))
+		},
+		zip.WithOperationID("updateUser"), zip.WithSummary("Update a user (Casdoor verb)"), zip.WithTags("compat"))
+
+	zip.Post(app, "/v1/iam/update-application",
+		func(ctx context.Context, in *schema.Application) (*httpx.Response, error) {
+			return envelope(appUpdate(ctx, in))
+		},
+		zip.WithOperationID("updateApplication"), zip.WithSummary("Update an application (Casdoor verb)"), zip.WithTags("compat"))
+
+	// delete-user — the console IamAdminApi + /org/iam admin mutation.
+	zip.Post(app, "/v1/iam/delete-user",
+		func(ctx context.Context, in *userBody) (*httpx.Response, error) {
+			return envelope(usersAPI.Delete(ctx, &users.Ref{Owner: in.Owner, Name: in.Name}))
+		},
+		zip.WithOperationID("deleteUser"), zip.WithSummary("Delete a user (Casdoor verb)"), zip.WithTags("compat"))
+
+	// Applications: add-/delete- (update-application already above).
+	zip.Post(app, "/v1/iam/add-application",
+		func(ctx context.Context, in *schema.Application) (*httpx.Response, error) { return envelope(appCreate(ctx, in)) },
+		zip.WithOperationID("addApplication"), zip.WithSummary("Create an application (Casdoor verb)"), zip.WithTags("compat"))
+	zip.Post(app, "/v1/iam/delete-application",
+		func(ctx context.Context, in *schema.Application) (*httpx.Response, error) {
+			return envelope(appDelete(ctx, &applications.ApplicationRef{Owner: in.Owner, Name: in.Name}))
+		},
+		zip.WithOperationID("deleteApplication"), zip.WithSummary("Delete an application (Casdoor verb)"), zip.WithTags("compat"))
+
+	// Providers: add-/update-/delete- (console admin Providers page).
+	zip.Post(app, "/v1/iam/add-provider",
+		func(ctx context.Context, in *schema.Provider) (*httpx.Response, error) { return envelope(provAdd(ctx, in)) },
+		zip.WithOperationID("addProvider"), zip.WithSummary("Create a provider (Casdoor verb)"), zip.WithTags("compat"))
+	zip.Post(app, "/v1/iam/update-provider",
+		func(ctx context.Context, in *schema.Provider) (*httpx.Response, error) { return envelope(provUpdate(ctx, in)) },
+		zip.WithOperationID("updateProvider"), zip.WithSummary("Update a provider (Casdoor verb)"), zip.WithTags("compat"))
+	zip.Post(app, "/v1/iam/delete-provider",
+		func(ctx context.Context, in *schema.Provider) (*httpx.Response, error) { return envelope(provDelete(ctx, in)) },
+		zip.WithOperationID("deleteProvider"), zip.WithSummary("Delete a provider (Casdoor verb)"), zip.WithTags("compat"))
+
+	// Roles: add-/update-/delete- (console admin Roles page).
+	zip.Post(app, "/v1/iam/add-role",
+		func(ctx context.Context, in *roles.Input) (*httpx.Response, error) { return envelope(rolesH.Create(ctx, in)) },
+		zip.WithOperationID("addRole"), zip.WithSummary("Create a role (Casdoor verb)"), zip.WithTags("compat"))
+	zip.Post(app, "/v1/iam/update-role",
+		func(ctx context.Context, in *roles.Input) (*httpx.Response, error) { return envelope(rolesH.Update(ctx, in)) },
+		zip.WithOperationID("updateRole"), zip.WithSummary("Update a role (Casdoor verb)"), zip.WithTags("compat"))
+	zip.Post(app, "/v1/iam/delete-role",
+		func(ctx context.Context, in *roles.Ref) (*httpx.Response, error) { return envelope(rolesH.Delete(ctx, in)) },
+		zip.WithOperationID("deleteRole"), zip.WithSummary("Delete a role (Casdoor verb)"), zip.WithTags("compat"))
+
+	// Projects: add-/delete- (console ScopeSwitcher; the read rides get-organization-projects
+	// in aliases.go). Owner is the org, so app.Authorize gates a write to an org-admin
+	// of that org — the same clause as add-role.
+	zip.Post(app, "/v1/iam/add-project",
+		func(ctx context.Context, in *projects.Input) (*httpx.Response, error) { return envelope(projectsH.Create(ctx, in)) },
+		zip.WithOperationID("addProject"), zip.WithSummary("Create a project (Casdoor verb)"), zip.WithTags("compat"))
+	zip.Post(app, "/v1/iam/delete-project",
+		func(ctx context.Context, in *projects.Ref) (*httpx.Response, error) { return envelope(projectsH.Delete(ctx, in)) },
+		zip.WithOperationID("deleteProject"), zip.WithSummary("Delete a project (Casdoor verb)"), zip.WithTags("compat"))
+
+	// Organizations: update-/delete- (add-organization already above).
+	zip.Post(app, "/v1/iam/update-organization",
+		func(ctx context.Context, in *organizations.UpdateOrganizationInput) (*httpx.Response, error) {
+			return envelope(orgs.Update(ctx, in))
+		},
+		zip.WithOperationID("updateOrganization"), zip.WithSummary("Update an organization (Casdoor verb)"), zip.WithTags("compat"))
+	zip.Post(app, "/v1/iam/delete-organization",
+		func(ctx context.Context, in *organizations.DeleteOrganizationInput) (*httpx.Response, error) {
+			return envelope(orgs.Delete(ctx, in))
+		},
+		zip.WithOperationID("deleteOrganization"), zip.WithSummary("Delete an organization (Casdoor verb)"), zip.WithTags("compat"))
+}
+
+// userBody is the bare-user body the Casdoor add-user/update-user verbs post (the
+// user's fields at top level, plus an optional plaintext password), distinct from the
+// REST twin's {user,password} envelope. It embeds schema.User so the authz op-seam
+// reads the target (Owner, Name) straight off it, then the handler hands the parts to
+// the ONE users Create/Update path (which bcrypt-hashes the password — never stored
+// plaintext — and returns the redacted row).
+type userBody struct {
+	schema.User
+	Password string `json:"password,omitempty"`
+}
+
+// envelope wraps an entity Create/Update result in the casibase Response the Casdoor
+// clients parse: {status:"ok", data:<masked entity>} on success, or a 200
+// {status:"error", msg} on a handler error (the casibase convention — clients branch
+// on status, not the HTTP code), never an HTTP error status. An authorization refusal
+// happens earlier, at the op-seam, and surfaces as a 403 the clients already handle.
+func envelope[T any](entity *T, err error) (*httpx.Response, error) {
+	if err != nil {
+		return &httpx.Response{Status: "error", Msg: err.Error()}, nil
+	}
+	return &httpx.Response{Status: "ok", Data: entity}, nil
+}

internal/compat/writes_test.go

@@ -0,0 +1,230 @@
+// Copyright 2026 Hanzo AI, Inc. All rights reserved.
+
+package compat_test
+
+// End-to-end tests for the Casdoor WRITE verbs + the structurally-public front
+// door, driven through the REAL mounted router (routes.Mount installs the authz
+// Guard + Authorize seam; the front door is registered on the pre-Guard public
+// group). They assert the three write contracts a backend swap depends on:
+// the {status,ok} envelope every client parses, authorization identical to the REST
+// twin (super for platform-owned org/app; org-admin for its own users; cross-tenant
+// refused), and that no secret ever surfaces. Plus: the front-door session routes are
+// reachable WITHOUT a bearer (the portal/admin-guard call them with a cookie).
+
+import (
+	"bytes"
+	"encoding/json"
+	"io"
+	"net/http/httptest"
+	"strings"
+	"testing"
+)
+
+// post issues a JSON POST through the real router and returns (status, rawBody).
+func (h *harness) post(t *testing.T, path, bearer string, body any) (int, string) {
+	t.Helper()
+	b, _ := json.Marshal(body)
+	req := httptest.NewRequest("POST", path, bytes.NewReader(b))
+	req.Host = "hanzo.id"
+	req.Header.Set("Content-Type", "application/json")
+	if bearer != "" {
+		req.Header.Set("Authorization", "Bearer "+bearer)
+	}
+	resp, err := h.app.Fiber().Test(req)
+	if err != nil {
+		t.Fatalf("POST %s: %v", path, err)
+	}
+	b2, _ := io.ReadAll(resp.Body)
+	_ = resp.Body.Close()
+	return resp.StatusCode, string(b2)
+}
+
+// okEnvelope decodes a body and asserts status=="ok".
+func okEnvelope(t *testing.T, status int, body string) {
+	t.Helper()
+	if status != 200 {
+		t.Fatalf("status = %d, want 200; body=%s", status, body)
+	}
+	var m map[string]any
+	if err := json.Unmarshal([]byte(body), &m); err != nil {
+		t.Fatalf("not the v1 envelope: %v; body=%s", err, body)
+	}
+	if m["status"] != "ok" {
+		t.Fatalf("status field = %v, want ok; body=%s", m["status"], body)
+	}
+}
+
+// add-organization is a platform-owned write — only a SuperAdmin may create one,
+// through the SAME organizations.Create the REST route uses. The created row is then
+// readable via the get-organization read alias.
+func TestAddOrganization_super(t *testing.T) {
+	h := newHarness(t)
+	status, body := h.post(t, "/v1/iam/add-organization", h.token(t, "admin/root"),
+		map[string]any{"owner": "admin", "name": "acme", "displayName": "Acme"})
+	okEnvelope(t, status, body)
+	assertNoSecretLeak(t, body)
+
+	// It hit the real store — the org is now readable through the get alias.
+	if s, rb := h.get(t, "/v1/iam/get-organization?id=admin/acme", h.token(t, "admin/root")); s != 200 || !strings.Contains(rb, "acme") {
+		t.Fatalf("created org not readable: status=%d body=%s", s, rb)
+	}
+}
+
+// A non-super is refused at the ONE authz seam (platform-owned resource → super-only),
+// exactly as the REST twin is.
+func TestAddOrganization_nonSuperForbidden(t *testing.T) {
+	h := newHarness(t)
+	status, _ := h.post(t, "/v1/iam/add-organization", h.token(t, "hanzo/boss"),
+		map[string]any{"owner": "admin", "name": "acme"})
+	if status != 403 {
+		t.Fatalf("org-admin add-organization status = %d, want 403", status)
+	}
+}
+
+// add-user: an org-admin creates a user in its OWN org through users.Create — the
+// password is bcrypt-hashed (never returned/stored plaintext) and the row comes back
+// redacted.
+func TestAddUser_orgAdmin(t *testing.T) {
+	h := newHarness(t)
+	status, body := h.post(t, "/v1/iam/add-user", h.token(t, "hanzo/boss"),
+		map[string]any{"owner": "hanzo", "name": "newbie", "password": "S3cret-pw!"})
+	okEnvelope(t, status, body)
+	if strings.Contains(body, "S3cret-pw!") {
+		t.Fatalf("add-user echoed the plaintext password: %s", body)
+	}
+	assertNoSecretLeak(t, body)
+	// Readable through the get alias (same store).
+	if s, rb := h.get(t, "/v1/iam/get-user?id=hanzo/newbie", h.token(t, "admin/root")); s != 200 || !strings.Contains(rb, "newbie") {
+		t.Fatalf("created user not readable: status=%d body=%s", s, rb)
+	}
+}
+
+// A cross-tenant create is refused: hanzo's admin cannot add a user under orgb.
+func TestAddUser_crossTenantForbidden(t *testing.T) {
+	h := newHarness(t)
+	status, _ := h.post(t, "/v1/iam/add-user", h.token(t, "hanzo/boss"),
+		map[string]any{"owner": "orgb", "name": "intruder", "password": "x"})
+	if status != 403 {
+		t.Fatalf("cross-tenant add-user status = %d, want 403", status)
+	}
+}
+
+// update-user overwrites from the body (casdoor semantics) through users.Update; the
+// change is visible via the get alias and no secret leaks.
+func TestUpdateUser_super(t *testing.T) {
+	h := newHarness(t)
+	status, body := h.post(t, "/v1/iam/update-user", h.token(t, "admin/root"),
+		map[string]any{"owner": "hanzo", "name": "alice", "displayName": "Alice Updated"})
+	okEnvelope(t, status, body)
+	assertNoSecretLeak(t, body)
+	if s, rb := h.get(t, "/v1/iam/get-user?id=hanzo/alice", h.token(t, "admin/root")); s != 200 || !strings.Contains(rb, "Alice Updated") {
+		t.Fatalf("update-user not applied: status=%d body=%s", s, rb)
+	}
+}
+
+// update-application is platform-owned → super-only, through applications.Update.
+func TestUpdateApplication_super(t *testing.T) {
+	h := newHarness(t)
+	status, body := h.post(t, "/v1/iam/update-application", h.token(t, "admin/root"),
+		map[string]any{"owner": "admin", "name": "hanzo-console", "displayName": "Console"})
+	okEnvelope(t, status, body)
+	assertNoSecretLeak(t, body)
+}
+
+// The write verbs are gated — no bearer fails closed at the Guard (they are
+// registered after it).
+func TestWriteAliases_requireAuth(t *testing.T) {
+	h := newHarness(t)
+	if status, _ := h.post(t, "/v1/iam/add-user", "", map[string]any{"owner": "hanzo", "name": "x"}); status != 401 {
+		t.Fatalf("unauthenticated add-user status = %d, want 401", status)
+	}
+}
+
+// The FRONT-DOOR session routes are structurally PUBLIC — registered on the
+// pre-Guard group, so reachable WITHOUT a bearer (the portal + gateway admin-guard
+// call them with a session cookie). An anonymous caller gets the casibase
+// {status:"error"} (200), never a 401 and never a leak.
+func TestFrontDoorPublic_ReachableWithoutBearer(t *testing.T) {
+	h := newHarness(t)
+	for _, tc := range []struct {
+		method, path string
+	}{
+		{"GET", "/v1/iam/get-account"},
+		{"GET", "/v1/iam/whoami"},
+		{"GET", "/v1/iam/linked-accounts"},
+	} {
+		status, body := h.get(t, tc.path, "")
+		if status != 200 {
+			t.Fatalf("%s %s without a bearer status=%d, want 200 (public); body=%s", tc.method, tc.path, status, body)
+		}
+		if !strings.Contains(body, "\"error\"") {
+			t.Fatalf("anonymous %s must be the casibase error envelope; body=%s", tc.path, body)
+		}
+	}
+	// signin (a POST) is public too — anonymous, no code → a 200 error, not a 401.
+	if status, body := h.post(t, "/v1/iam/signin", "", map[string]any{}); status != 200 || !strings.Contains(body, "\"error\"") {
+		t.Fatalf("anonymous signin status=%d body=%s, want 200 error (public)", status, body)
+	}
+}
+
+// --- C2 parity write-verb aliases (the console admin mutations) ---
+
+// delete-user: a full lifecycle through the Casdoor verb (add → delete → gone).
+func TestDeleteUser_lifecycle(t *testing.T) {
+	h := newHarness(t)
+	root := h.token(t, "admin/root")
+	if s, b := h.post(t, "/v1/iam/add-user", root, map[string]any{"owner": "hanzo", "name": "tmp", "password": "x"}); s != 200 {
+		t.Fatalf("add-user status=%d body=%s", s, b)
+	}
+	h.postAssertOK(t, "/v1/iam/delete-user", root, map[string]any{"owner": "hanzo", "name": "tmp"})
+	if s, rb := h.get(t, "/v1/iam/get-user?id=hanzo/tmp", root); s == 200 && strings.Contains(rb, "\"name\":\"tmp\"") {
+		t.Fatalf("user still present after delete-user: %s", rb)
+	}
+}
+
+// add-provider is platform-owned — only a SuperAdmin creates one, over the SAME
+// providers.Add the REST route uses.
+func TestAddProvider_super(t *testing.T) {
+	h := newHarness(t)
+	root := h.token(t, "admin/root")
+	h.postAssertOK(t, "/v1/iam/add-provider", root,
+		map[string]any{"owner": "admin", "name": "provider-test", "category": "OAuth", "type": "GitHub"})
+	if s, rb := h.get(t, "/v1/iam/get-provider?id=admin/provider-test", root); s != 200 || !strings.Contains(rb, "provider-test") {
+		t.Fatalf("get-provider after add: status=%d body=%s", s, rb)
+	}
+}
+
+// add-provider by a non-super is refused (platform-owned write).
+func TestAddProvider_nonSuperForbidden(t *testing.T) {
+	h := newHarness(t)
+	s, _ := h.post(t, "/v1/iam/add-provider", h.token(t, "hanzo/boss"),
+		map[string]any{"owner": "admin", "name": "evil", "category": "OAuth", "type": "GitHub"})
+	if s != 403 {
+		t.Fatalf("non-super add-provider status=%d, want 403", s)
+	}
+}
+
+// add-role is tenant-owned — an org-admin creates one in its OWN org.
+func TestAddRole_orgAdmin(t *testing.T) {
+	h := newHarness(t)
+	boss := h.token(t, "hanzo/boss")
+	h.postAssertOK(t, "/v1/iam/add-role", boss,
+		map[string]any{"owner": "hanzo", "name": "editors", "displayName": "Editors"})
+	if s, rb := h.get(t, "/v1/iam/get-role?id=hanzo/editors", boss); s != 200 || !strings.Contains(rb, "editors") {
+		t.Fatalf("get-role after add: status=%d body=%s", s, rb)
+	}
+}
+
+// update-organization is platform-owned — SuperAdmin only.
+func TestUpdateOrganization_super(t *testing.T) {
+	h := newHarness(t)
+	root := h.token(t, "admin/root")
+	h.postAssertOK(t, "/v1/iam/update-organization", root,
+		map[string]any{"owner": "admin", "name": "hanzo", "displayName": "Hanzo Updated"})
+}
+
+// postAssertOK posts and asserts the {status:ok} envelope.
+func (h *harness) postAssertOK(t *testing.T, path, bearer string, body any) {
+	s, b := h.post(t, path, bearer, body)
+	okEnvelope(t, s, b)
+}

internal/cred/cred.go

@@ -0,0 +1,107 @@
+// Copyright 2026 Hanzo AI, Inc. All rights reserved.
+
+// Package cred verifies a stored password digest against a plaintext, resolving
+// the algorithm FROM THE STORED ROW — never from a constant.
+//
+// Why this exists: v1 stamps `argon2id` on effectively every live row (the org's
+// PasswordType is rewritten to argon2id on create/update, and UpdateUserPassword
+// stamps it per user). A bcrypt-only verifier handed an argon2id PHC string
+// returns ErrHashTooShort, so a bcrypt-only login fails 100% of real users at
+// cutover. v1 resolves per row — user.PasswordType, falling back to the
+// organization's — and dispatches to the matching manager. iam2 does the same.
+//
+// Hashing is argon2id ONLY (SOTA). Verify stays scheme-aware so pre-existing
+// bcrypt and v1 argon2id rows keep validating, but every NEW or updated digest
+// this package mints is argon2id — one way to hash, the strongest one. Re-hashing
+// a verified bcrypt row to argon2id (upgrade-on-login) is a separate, deliberate
+// decision, not a side effect of a read.
+package cred
+
+import (
+	"crypto/subtle"
+
+	"github.com/alexedwards/argon2id"
+	"golang.org/x/crypto/bcrypt"
+)
+
+// Supported password types. These are the two schemes Hanzo actually stores:
+// argon2id (every live v1 row) and bcrypt (what iam2 mints for new users).
+// Anything else fails CLOSED — a silent "true" on an unrecognized scheme would
+// be an auth bypass, and a silent "false" we can't explain is a support
+// nightmare, so Verify reports Unsupported distinctly.
+const (
+	TypeArgon2id = "argon2id"
+	TypeBcrypt   = "bcrypt"
+)
+
+// Resolve returns the password type for a row: the user's own, else the
+// organization's, else "" (caller decides — never guess a default, since a wrong
+// guess is either a failed login or, worse, a bypass).
+func Resolve(userType, orgType string) string {
+	if userType != "" {
+		return userType
+	}
+	return orgType
+}
+
+// Supported reports whether Verify can handle this password type.
+func Supported(passwordType string) bool {
+	switch passwordType {
+	case TypeArgon2id, TypeBcrypt:
+		return true
+	}
+	return false
+}
+
+// Verify reports whether plaintext matches the stored digest under passwordType.
+// Both supported schemes carry their own parameters in the digest (bcrypt's
+// $2a$… and argon2id's $argon2id$v=19$… PHC string), so no external salt is
+// needed; salt is accepted for the legacy per-row salt schemes v1 also supports
+// and is currently unused.
+//
+// Fails closed: an unknown/empty type, an empty hash, or a malformed digest
+// returns false.
+func Verify(passwordType, plaintext, hashed string) bool {
+	if hashed == "" || !Supported(passwordType) {
+		return false
+	}
+	switch passwordType {
+	case TypeArgon2id:
+		// ComparePasswordAndHash is constant-time internally and parses the PHC
+		// parameters from the digest itself; a malformed digest returns an error,
+		// which we treat as "no match" (never a panic, never a pass).
+		match, err := argon2id.ComparePasswordAndHash(plaintext, hashed)
+		return err == nil && match
+	case TypeBcrypt:
+		return bcrypt.CompareHashAndPassword([]byte(hashed), []byte(plaintext)) == nil
+	}
+	return false
+}
+
+// hashParams are the argon2id cost parameters for every new digest — OWASP-aligned
+// SOTA (64 MiB memory, 2 passes, parallelism 1), tuned so a login stays well under
+// ~100ms while resisting GPU/ASIC cracking. The parameters + a per-hash random salt
+// ride INSIDE the PHC string, so Verify reads them from the digest itself — changing
+// these never invalidates an already-stored hash.
+var hashParams = &argon2id.Params{
+	Memory:      64 * 1024, // 64 MiB
+	Iterations:  2,
+	Parallelism: 1,
+	SaltLength:  16,
+	KeyLength:   32,
+}
+
+// Hash derives a one-way argon2id (PHC) digest from a plaintext password — the
+// SOTA scheme every new/updated Hanzo password uses, stamped TypeArgon2id. The
+// cost parameters and a per-hash random salt are embedded in the returned string,
+// so Verify needs no external salt or config. The plaintext is never logged or
+// stored; only this one-way digest is.
+func Hash(plaintext string) (string, error) {
+	return argon2id.CreateHash(plaintext, hashParams)
+}
+
+// ConstantTimeEqual is a small helper for comparing non-hash secrets (e.g. a
+// verification code) without leaking length/position through timing.
+func ConstantTimeEqual(a, b string) bool {
+	return subtle.ConstantTimeCompare([]byte(a), []byte(b)) == 1
+}

internal/cred/cred_test.go

@@ -0,0 +1,105 @@
+// Copyright 2026 Hanzo AI, Inc. All rights reserved.
+
+package cred
+
+import (
+	"testing"
+
+	"github.com/alexedwards/argon2id"
+	"golang.org/x/crypto/bcrypt"
+)
+
+// TestVerify_Argon2id_RealV1FormatHash is the regression for the cutover
+// blocker: every live v1 row is argon2id, and a bcrypt-only verifier fails all
+// of them. This proves iam2 verifies a genuine argon2id PHC digest — the exact
+// shape v1's Argon2idCredManager writes (github.com/alexedwards/argon2id,
+// DefaultParams).
+func TestVerify_Argon2id_RealV1FormatHash(t *testing.T) {
+	pw := "correct horse battery staple"
+	hash, err := argon2id.CreateHash(pw, argon2id.DefaultParams)
+	if err != nil {
+		t.Fatal(err)
+	}
+	// Sanity: it really is the PHC shape a live row carries.
+	if len(hash) < 20 || hash[:9] != "$argon2id" {
+		t.Fatalf("not an argon2id PHC digest: %q", hash)
+	}
+	if !Verify(TypeArgon2id, pw, hash) {
+		t.Fatal("argon2id: correct password REJECTED — this is the cutover blocker")
+	}
+	if Verify(TypeArgon2id, "wrong password", hash) {
+		t.Fatal("argon2id: wrong password ACCEPTED")
+	}
+}
+
+// TestVerify_BcryptStillWorks — new iam2-minted users are bcrypt; don't regress.
+func TestVerify_Bcrypt(t *testing.T) {
+	pw := "s3cret-pw"
+	h, _ := bcrypt.GenerateFromPassword([]byte(pw), bcrypt.MinCost)
+	if !Verify(TypeBcrypt, pw, string(h)) {
+		t.Fatal("bcrypt: correct password rejected")
+	}
+	if Verify(TypeBcrypt, "nope", string(h)) {
+		t.Fatal("bcrypt: wrong password accepted")
+	}
+}
+
+// TestVerify_CrossSchemeFailsClosed — the actual bug: an argon2id digest handed
+// to the bcrypt path (or vice versa) must NOT pass, and must not panic.
+func TestVerify_CrossSchemeFailsClosed(t *testing.T) {
+	pw := "x"
+	argon, _ := argon2id.CreateHash(pw, argon2id.DefaultParams)
+	bc, _ := bcrypt.GenerateFromPassword([]byte(pw), bcrypt.MinCost)
+
+	if Verify(TypeBcrypt, pw, argon) {
+		t.Fatal("argon2id digest verified under bcrypt — auth bypass")
+	}
+	if Verify(TypeArgon2id, pw, string(bc)) {
+		t.Fatal("bcrypt digest verified under argon2id — auth bypass")
+	}
+}
+
+// TestVerify_FailsClosedOnGarbage — unknown type, empty hash, malformed digest.
+func TestVerify_FailsClosedOnGarbage(t *testing.T) {
+	cases := []struct{ typ, pw, hash string }{
+		{"", "pw", "$argon2id$v=19$whatever"},    // no type
+		{"sha256-salt", "pw", "deadbeef"},        // unsupported legacy type
+		{"plain", "pw", "pw"},                    // plaintext scheme: refused
+		{TypeArgon2id, "pw", ""},                 // empty hash
+		{TypeArgon2id, "pw", "not-a-phc-string"}, // malformed
+		{TypeBcrypt, "pw", "$2a$garbage"},        // malformed bcrypt
+		{"ARGON2ID", "pw", "$argon2id$v=19$x"},   // case-sensitive: not supported
+	}
+	for _, c := range cases {
+		if Verify(c.typ, c.pw, c.hash) {
+			t.Fatalf("verify(%q, hash=%q) returned TRUE — must fail closed", c.typ, c.hash)
+		}
+	}
+}
+
+// TestResolve_PerRowThenOrgFallback — v1's contract: the user's own type wins;
+// an empty user type falls back to the org's; never a hardcoded default.
+func TestResolve(t *testing.T) {
+	if got := Resolve("bcrypt", "argon2id"); got != "bcrypt" {
+		t.Fatalf("user type must win: got %q", got)
+	}
+	if got := Resolve("", "argon2id"); got != "argon2id" {
+		t.Fatalf("empty user type must fall back to org: got %q", got)
+	}
+	if got := Resolve("", ""); got != "" {
+		t.Fatalf("both empty must stay empty (caller decides), got %q", got)
+	}
+}
+
+func TestSupported(t *testing.T) {
+	for _, ok := range []string{TypeArgon2id, TypeBcrypt} {
+		if !Supported(ok) {
+			t.Fatalf("%s must be supported", ok)
+		}
+	}
+	for _, no := range []string{"", "plain", "salt", "sha512-salt", "md5-salt", "pbkdf2-salt"} {
+		if Supported(no) {
+			t.Fatalf("%q must NOT be supported (fail closed)", no)
+		}
+	}
+}

internal/cred/golden_v1_test.go

@@ -0,0 +1,65 @@
+// Copyright 2026 Hanzo AI, Inc. All rights reserved.
+
+package cred
+
+import "testing"
+
+// Golden vectors: PHC digests produced by **v1's own Argon2idCredManager**
+// (hanzoai/iam `cred.NewArgon2idCredManager().GetHashedPassword`, DefaultParams),
+// captured verbatim. This is the parity proof that matters — iam2 must verify the
+// exact bytes v1 wrote, not merely a digest iam2 generated itself.
+//
+// It also pins a REAL cross-version risk: v1 resolves
+// `github.com/alexedwards/argon2id v0.0.0-20211130144151-3585854a6387` while iam2
+// pins `v1.0.0`. The PHC string is self-describing (m/t/p + salt + key), so a
+// digest from either version must verify under the other — this test is what
+// proves that, and what fails loudly if a future bump ever breaks it.
+//
+// These are throwaway TEST passwords. No live user's digest is ever committed —
+// a real hash is an offline-attackable secret and does not belong in a repo.
+
+const (
+	// v1 Argon2idCredManager.GetHashedPassword("golden-test-password-1", "")
+	goldenV1Password = "golden-test-password-1"
+	goldenV1Digest   = "$argon2id$v=19$m=65536,t=1,p=2$oOen09XtFBqKnv2/K4q5mQ$iZKRwt09CdXDXr4E1CQtRoF/nWzgI810tMFUUiKHugo"
+)
+
+// TestGolden_V1Argon2idDigestVerifies is the cutover-parity assertion: a digest
+// written by the LIVE v1 code path verifies under iam2's cred.Verify.
+func TestGolden_V1Argon2idDigestVerifies(t *testing.T) {
+	if !Verify(TypeArgon2id, goldenV1Password, goldenV1Digest) {
+		t.Fatal("iam2 REJECTED a digest produced by v1's Argon2idCredManager — " +
+			"credential parity is broken; every live login would fail at cutover")
+	}
+	if Verify(TypeArgon2id, "not-the-password", goldenV1Digest) {
+		t.Fatal("wrong password ACCEPTED against the v1 golden digest")
+	}
+}
+
+// TestGolden_V1DigestShape documents the exact PHC shape v1 emits, so a change in
+// v1's params (or a lib bump on either side) is caught here rather than in prod.
+func TestGolden_V1DigestShape(t *testing.T) {
+	// $argon2id$v=19$m=65536,t=1,p=2$<salt>$<key>
+	const wantPrefix = "$argon2id$v=19$m=65536,t=1,p="
+	if len(goldenV1Digest) < len(wantPrefix) || goldenV1Digest[:len(wantPrefix)] != wantPrefix {
+		t.Fatalf("v1 digest shape changed: %q", goldenV1Digest)
+	}
+}
+
+// TestGolden_ResolvedThroughRowType proves the full row→algorithm path a real
+// login takes: the row says "argon2id" (what every live v1 row says), the org
+// fallback is irrelevant, and the v1 digest verifies.
+func TestGolden_ResolvedThroughRowType(t *testing.T) {
+	typ := Resolve("argon2id", "bcrypt") // user's own type must win
+	if typ != TypeArgon2id {
+		t.Fatalf("resolve: got %q", typ)
+	}
+	if !Verify(typ, goldenV1Password, goldenV1Digest) {
+		t.Fatal("row-resolved argon2id failed to verify the v1 golden digest")
+	}
+	// And the bug that shipped: resolving to bcrypt against this digest must FAIL,
+	// never pass.
+	if Verify(TypeBcrypt, goldenV1Password, goldenV1Digest) {
+		t.Fatal("v1 argon2id digest verified under bcrypt — auth bypass")
+	}
+}

internal/e2e/journey_test.go

@@ -0,0 +1,365 @@
+// Copyright 2026 Hanzo AI, Inc. All rights reserved.
+
+// Package e2e_test drives the WHOLE iam2 surface through the real mounted router
+// (routes.Route) as one integrated journey — the behavioral parity proof that the
+// old Casdoor IAM's clients work against iam2. Unlike the per-package unit tests,
+// this chains the real flows a live client runs in sequence: OIDC discovery →
+// PKCE login → code→token → userinfo → introspect → revoke; the admin console's
+// get-account → get-organizations → get-users (the Casdoor compat surface); SCIM
+// 2.0 provisioning; and RFC 8693 token exchange. Every step asserts the response
+// CONTRACT the client depends on.
+package e2e_test
+
+import (
+	"context"
+	"crypto/rand"
+	"crypto/rsa"
+	"crypto/x509"
+	"encoding/base64"
+	"encoding/json"
+	"encoding/pem"
+	"io"
+	"net/http/httptest"
+	"net/url"
+	"path/filepath"
+	"strings"
+	"testing"
+	"time"
+
+	"github.com/golang-jwt/jwt/v5"
+	"golang.org/x/crypto/bcrypt"
+
+	"github.com/hanzoai/orm"
+	ormdb "github.com/hanzoai/orm/db"
+	"github.com/zap-proto/zip"
+
+	"github.com/hanzoai/iam/internal/oidc"
+	"github.com/hanzoai/iam/internal/routes"
+	"github.com/hanzoai/iam/internal/schema"
+)
+
+const (
+	kid         = "cert-hanzo"
+	redirectURI = "https://console.hanzo.ai/auth/callback"
+)
+
+type env struct {
+	app *zip.App
+	key *rsa.PrivateKey
+	db  orm.DB
+}
+
+func boot(t *testing.T) *env {
+	t.Helper()
+	_ = schema.Kinds()
+	key, err := rsa.GenerateKey(rand.Reader, 2048)
+	if err != nil {
+		t.Fatalf("rsa: %v", err)
+	}
+	dir := t.TempDir()
+	db, err := orm.OpenSQLite(&ormdb.SQLiteDBConfig{
+		Path:   filepath.Join(dir, "e2e.db"),
+		Config: ormdb.SQLiteConfig{BusyTimeout: 5000, JournalMode: "WAL"},
+	})
+	if err != nil {
+		t.Fatalf("open sqlite: %v", err)
+	}
+	t.Cleanup(func() { _ = db.Close() })
+
+	seedCert(t, db, key)
+	// A confidential console app: password login + PKCE, in the hanzo org.
+	seedApp(t, db)
+	seedOrg(t, db, "admin")
+	seedOrg(t, db, "hanzo")
+	seedUser(t, db, "hanzo", "alice", "alice@hanzo.ai", "pw", false)
+	seedUser(t, db, "admin", "root", "root@hanzo.ai", "pw", true) // SuperAdmin
+
+	app := zip.New(zip.Config{AppName: "iam2-e2e", DisableStartupMessage: true})
+	routes.Route(app, db)
+	app.Prepare()
+	return &env{app: app, key: key, db: db}
+}
+
+// TestJourney_OIDCFlow is the full OAuth2/OIDC round trip a client SDK runs.
+func TestJourney_OIDCFlow(t *testing.T) {
+	e := boot(t)
+
+	// 1) Discovery is self-consistent (one issuer, the endpoints a strict client pins).
+	disc := e.getJSON(t, "/.well-known/openid-configuration", "")
+	if disc["issuer"] == "" || disc["token_endpoint"] == "" || disc["jwks_uri"] == "" {
+		t.Fatalf("discovery incomplete: %v", disc)
+	}
+	if disc["introspection_endpoint"] == "" || disc["revocation_endpoint"] == "" {
+		t.Fatalf("discovery missing RFC 7662/7009 endpoints: %v", disc)
+	}
+	// RFC 8414 AS metadata served at its own well-known.
+	if as := e.getJSON(t, "/.well-known/oauth-authorization-server", ""); as["issuer"] == "" {
+		t.Fatalf("RFC 8414 AS metadata missing")
+	}
+	// 2) JWKS publishes a verification key.
+	jwks := e.getJSON(t, "/v1/iam/.well-known/jwks", "")
+	if keys, _ := jwks["keys"].([]any); len(keys) == 0 {
+		t.Fatalf("JWKS has no keys: %v", jwks)
+	}
+
+	// 3) PKCE login → single-use code.
+	verifier := "e2e-verifier-0000000000000000000000000000000000000"
+	code := e.login(t, verifier)
+
+	// 4) Redeem the code → access token (+ id_token on openid, refresh on offline).
+	tok := e.token(t, url.Values{
+		"grant_type": {"authorization_code"}, "code": {code},
+		"client_id": {"hanzo-console"}, "client_secret": {"top-secret"},
+		"redirect_uri": {redirectURI}, "code_verifier": {verifier},
+	})
+	access, _ := tok["access_token"].(string)
+	if access == "" {
+		t.Fatalf("no access_token: %v", tok)
+	}
+
+	// 5) UserInfo carries the identity + the admin-guard contract (owner, isAdmin).
+	info := e.getJSON(t, "/v1/iam/oauth/userinfo", access)
+	if info["sub"] != "hanzo/alice" || info["owner"] != "hanzo" {
+		t.Fatalf("userinfo sub/owner wrong: %v", info)
+	}
+	if _, ok := info["isAdmin"]; !ok {
+		t.Fatalf("userinfo missing the isAdmin claim (admin-guard contract): %v", info)
+	}
+
+	// 6) Introspection (RFC 7662): active, with the standard claims.
+	ir := e.form(t, "/v1/iam/oauth/introspect", "hanzo-console", "top-secret", url.Values{"token": {access}})
+	if ir["active"] != true || ir["sub"] != "hanzo/alice" {
+		t.Fatalf("introspect not active/wrong sub: %v", ir)
+	}
+
+	// 7) Revocation (RFC 7009): the token dies — introspect flips to inactive.
+	e.form(t, "/v1/iam/oauth/revoke", "hanzo-console", "top-secret", url.Values{"token": {access}})
+	if after := e.form(t, "/v1/iam/oauth/introspect", "hanzo-console", "top-secret", url.Values{"token": {access}}); after["active"] != false {
+		t.Fatalf("token still active after revoke: %v", after)
+	}
+}
+
+// TestJourney_PasswordGrant_and_TokenExchange proves the two non-interactive grants
+// the console/BFF rely on.
+func TestJourney_PasswordGrant_and_TokenExchange(t *testing.T) {
+	t.Setenv("IAM_KEY_MINT_ALLOWED_APPS", "hanzo-console")
+	e := boot(t)
+
+	// Password grant → a first-party session token for alice.
+	pw := e.token(t, url.Values{
+		"grant_type": {"password"}, "client_id": {"hanzo-console"}, "client_secret": {"top-secret"},
+		"username": {"alice@hanzo.ai"}, "password": {"pw"}, "scope": {"openid profile"},
+	})
+	subjectToken, _ := pw["access_token"].(string)
+	if subjectToken == "" {
+		t.Fatalf("password grant failed: %v", pw)
+	}
+
+	// RFC 8693 token exchange: the BFF exchanges alice's token for one scoped to a
+	// downstream resource, still bound to alice.
+	xe := e.token(t, url.Values{
+		"grant_type":    {"urn:ietf:params:oauth:grant-type:token-exchange"},
+		"client_id":     {"hanzo-console"}, "client_secret": {"top-secret"},
+		"subject_token": {subjectToken}, "resource": {"hanzo-cloud"},
+	})
+	if xe["issued_token_type"] != "urn:ietf:params:oauth:token-type:access_token" || xe["access_token"] == "" {
+		t.Fatalf("token exchange failed: %v", xe)
+	}
+}
+
+// TestJourney_AdminConsole_CasdoorSurface proves the old admin console's calls work:
+// get-account (the security contract), get-organizations (OrgSwitcher), get-users.
+func TestJourney_AdminConsole_CasdoorSurface(t *testing.T) {
+	e := boot(t)
+	root := e.mint(t, "admin/root") // a SuperAdmin bearer
+
+	// get-account — {status:ok, data:<masked user>} with owner + isAdmin.
+	acct := e.getJSON(t, "/v1/iam/get-account", root)
+	if acct["status"] != "ok" {
+		t.Fatalf("get-account status: %v", acct)
+	}
+
+	// get-organizations — the OrgSwitcher workhorse; SuperAdmin sees all.
+	orgs := e.getJSON(t, "/v1/iam/get-organizations", root)
+	if orgs["status"] != "ok" {
+		t.Fatalf("get-organizations status: %v", orgs)
+	}
+	if data, _ := orgs["data"].([]any); len(data) < 2 {
+		t.Fatalf("get-organizations returned %d orgs, want >=2 (admin+hanzo)", len(data))
+	}
+
+	// get-users scoped to an org — no secret leaks.
+	usersBody := e.getRaw(t, "/v1/iam/get-users?owner=hanzo", root)
+	if strings.Contains(usersBody, "passwordHash") || strings.Contains(usersBody, "\"password\"") {
+		t.Fatalf("get-users leaked a secret: %s", usersBody)
+	}
+}
+
+// TestJourney_SCIMProvisioning proves the RFC-standard provisioning path an IdP uses.
+func TestJourney_SCIMProvisioning(t *testing.T) {
+	e := boot(t)
+	root := e.mint(t, "admin/root")
+
+	create := `{"schemas":["urn:ietf:params:scim:schemas:core:2.0:User"],"userName":"newhire",` +
+		`"active":true,"password":"pw","urn:ietf:params:scim:schemas:extension:hanzo:2.0:User":{"owner":"hanzo"}}`
+	st, body := e.req(t, "POST", "/v1/iam/scim/v2/Users", root, create, "application/scim+json")
+	if st != 201 {
+		t.Fatalf("SCIM create status = %d: %s", st, body)
+	}
+	if st, _ := e.req(t, "GET", "/v1/iam/scim/v2/Users/hanzo/newhire", root, "", ""); st != 200 {
+		t.Fatalf("SCIM get status = %d", st)
+	}
+	if st, _ := e.req(t, "DELETE", "/v1/iam/scim/v2/Users/hanzo/newhire", root, "", ""); st != 204 {
+		t.Fatalf("SCIM delete status = %d", st)
+	}
+}
+
+// ---- flow helpers ----
+
+func (e *env) login(t *testing.T, verifier string) string {
+	t.Helper()
+	body, _ := json.Marshal(map[string]string{
+		"type": "code", "organization": "hanzo", "username": "alice@hanzo.ai", "password": "pw",
+		"clientId": "hanzo-console", "redirectUri": redirectURI, "scope": "openid profile email offline_access",
+		"codeChallenge": oidc.ComputeS256Challenge(verifier), "codeChallengeMethod": "S256",
+	})
+	st, resp := e.req(t, "POST", "/v1/iam/login", "", string(body), "application/json")
+	if st != 200 {
+		t.Fatalf("login status = %d: %s", st, resp)
+	}
+	var m map[string]any
+	_ = json.Unmarshal([]byte(resp), &m)
+	code, _ := m["data"].(string)
+	if code == "" {
+		t.Fatalf("login returned no code: %s", resp)
+	}
+	return code
+}
+
+func (e *env) token(t *testing.T, form url.Values) map[string]any {
+	t.Helper()
+	st, body := e.req(t, "POST", "/v1/iam/oauth/token", "", form.Encode(), "application/x-www-form-urlencoded")
+	_ = st
+	var m map[string]any
+	_ = json.Unmarshal([]byte(body), &m)
+	return m
+}
+
+func (e *env) form(t *testing.T, path, clientID, secret string, form url.Values) map[string]any {
+	t.Helper()
+	req := httptest.NewRequest("POST", path, strings.NewReader(form.Encode()))
+	req.Host = "hanzo.id"
+	req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
+	req.Header.Set("Authorization", "Basic "+base64.StdEncoding.EncodeToString([]byte(clientID+":"+secret)))
+	resp, err := e.app.Fiber().Test(req)
+	if err != nil {
+		t.Fatalf("form %s: %v", path, err)
+	}
+	b, _ := io.ReadAll(resp.Body)
+	var m map[string]any
+	_ = json.Unmarshal(b, &m)
+	return m
+}
+
+func (e *env) req(t *testing.T, method, path, bearer, body, contentType string) (int, string) {
+	t.Helper()
+	var r io.Reader
+	if body != "" {
+		r = strings.NewReader(body)
+	}
+	req := httptest.NewRequest(method, path, r)
+	req.Host = "hanzo.id"
+	if contentType != "" {
+		req.Header.Set("Content-Type", contentType)
+	}
+	if bearer != "" {
+		req.Header.Set("Authorization", "Bearer "+bearer)
+	}
+	resp, err := e.app.Fiber().Test(req)
+	if err != nil {
+		t.Fatalf("%s %s: %v", method, path, err)
+	}
+	b, _ := io.ReadAll(resp.Body)
+	return resp.StatusCode, string(b)
+}
+
+func (e *env) getJSON(t *testing.T, path, bearer string) map[string]any {
+	t.Helper()
+	_, body := e.req(t, "GET", path, bearer, "", "")
+	var m map[string]any
+	_ = json.Unmarshal([]byte(body), &m)
+	return m
+}
+
+func (e *env) getRaw(t *testing.T, path, bearer string) string {
+	t.Helper()
+	_, body := e.req(t, "GET", path, bearer, "", "")
+	return body
+}
+
+// mint signs an RS256 bearer for sub under the seeded cert — a valid principal the
+// Guard admits (used for the compat/SCIM admin calls, which need a verified bearer
+// but not a persisted grant row).
+func (e *env) mint(t *testing.T, sub string) string {
+	t.Helper()
+	tok := jwt.NewWithClaims(jwt.SigningMethodRS256, jwt.MapClaims{
+		"sub": sub, "iat": time.Now().Add(-time.Minute).Unix(), "exp": time.Now().Add(time.Hour).Unix(),
+	})
+	tok.Header["kid"] = kid
+	s, err := tok.SignedString(e.key)
+	if err != nil {
+		t.Fatalf("sign: %v", err)
+	}
+	return s
+}
+
+// ---- seed helpers ----
+
+func seedCert(t *testing.T, db orm.DB, key *rsa.PrivateKey) {
+	t.Helper()
+	c := orm.New[schema.Cert](db)
+	c.Owner, c.Name, c.CryptoAlgorithm = "admin", kid, "RS256"
+	c.PrivateKey = string(pem.EncodeToMemory(&pem.Block{Type: "RSA PRIVATE KEY", Bytes: x509.MarshalPKCS1PrivateKey(key)}))
+	c.SetId("admin/" + kid)
+	if err := c.CreateCtx(context.Background()); err != nil {
+		t.Fatalf("seed cert: %v", err)
+	}
+}
+
+func seedApp(t *testing.T, db orm.DB) {
+	t.Helper()
+	a := orm.New[schema.Application](db)
+	a.Owner, a.Name, a.ClientId, a.ClientSecret = "admin", "hanzo-console", "hanzo-console", "top-secret"
+	a.Organization, a.Cert, a.EnablePassword = "hanzo", kid, true
+	a.RedirectUris = []string{redirectURI}
+	a.ExpireInHours = 1
+	a.SetId("admin/hanzo-console")
+	if err := a.CreateCtx(context.Background()); err != nil {
+		t.Fatalf("seed app: %v", err)
+	}
+}
+
+func seedOrg(t *testing.T, db orm.DB, name string) {
+	t.Helper()
+	o := orm.New[schema.Organization](db)
+	o.Owner, o.Name = "admin", name
+	o.SetId("admin/" + name)
+	if err := o.CreateCtx(context.Background()); err != nil {
+		t.Fatalf("seed org %s: %v", name, err)
+	}
+}
+
+func seedUser(t *testing.T, db orm.DB, owner, name, email, password string, admin bool) {
+	t.Helper()
+	u := orm.New[schema.User](db)
+	u.Owner, u.Name, u.Email, u.IsAdmin = owner, name, email, admin
+	hash, herr := bcrypt.GenerateFromPassword([]byte(password), bcrypt.MinCost)
+	if herr != nil {
+		t.Fatalf("hash: %v", herr)
+	}
+	u.PasswordHash, u.PasswordType = string(hash), "bcrypt"
+	u.SetId(owner + "/" + name)
+	if err := u.CreateCtx(context.Background()); err != nil {
+		t.Fatalf("seed user %s/%s: %v", owner, name, err)
+	}
+}

internal/featurestore/featurestore.go

@@ -0,0 +1,130 @@
+// Copyright 2026 Hanzo AI, Inc. All rights reserved.
+
+// Package featurestore implements feature.Store over the iam2 orm store, so the
+// hanzoiam/* enterprise modules read/write the SAME identity data as the core.
+// Internal: the core (server.Mount) constructs it and hands the interface to
+// feature.MountAll — modules never see this package, only the feature.Store seam.
+package featurestore
+
+import (
+	"context"
+
+	"github.com/hanzoai/orm"
+
+	"github.com/hanzoai/iam/feature"
+	"github.com/hanzoai/iam/internal/schema"
+	"github.com/hanzoai/iam/internal/store"
+	"github.com/hanzoai/iam/internal/users"
+	"github.com/hanzoai/iam/pkg/model"
+)
+
+type ormStore struct {
+	db orm.DB
+	u  *users.API
+}
+
+// New returns a feature.Store backed by db (the core's one identity store).
+func New(db orm.DB) feature.Store { return &ormStore{db: db, u: users.New(db)} }
+
+func (s *ormStore) GetUser(ctx context.Context, owner, name string) (*model.User, error) {
+	return store.GetUserByName(ctx, s.db, owner, name)
+}
+
+func (s *ormStore) GetUserByID(_ context.Context, id string) (*model.User, error) {
+	u, err := orm.Get[schema.User](s.db, id)
+	if err != nil {
+		return nil, err
+	}
+	return u, nil
+}
+
+func (s *ormStore) GetGlobalUsers(ctx context.Context, offset, limit int) ([]*model.User, int, error) {
+	total, err := orm.TypedQuery[schema.User](s.db).Count(ctx)
+	if err != nil {
+		return nil, 0, err
+	}
+	q := orm.TypedQuery[schema.User](s.db).Order("Name")
+	if offset > 0 {
+		q = q.Offset(offset)
+	}
+	if limit > 0 {
+		q = q.Limit(limit)
+	}
+	list, err := q.GetAll(ctx)
+	return list, total, err
+}
+
+func (s *ormStore) AddUser(ctx context.Context, u *model.User) (bool, error) {
+	if _, err := s.u.Create(ctx, &users.CreateInput{User: *u}); err != nil {
+		return false, err
+	}
+	return true, nil
+}
+
+func (s *ormStore) UpdateUser(ctx context.Context, u *model.User) (bool, error) {
+	if _, err := s.u.Update(ctx, &users.UpdateInput{User: *u}); err != nil {
+		return false, err
+	}
+	return true, nil
+}
+
+func (s *ormStore) DeleteUser(ctx context.Context, owner, name string) (bool, error) {
+	out, err := s.u.Delete(ctx, &users.Ref{Owner: owner, Name: name})
+	if err != nil {
+		return false, err
+	}
+	return out.Deleted, nil
+}
+
+func (s *ormStore) GetApplication(ctx context.Context, id string) (*model.Application, error) {
+	if app, err := store.GetApplicationByName(ctx, s.db, "admin", id); err == nil && app != nil {
+		return app, nil
+	}
+	return store.GetApplicationByClientId(ctx, s.db, id)
+}
+
+func (s *ormStore) GetOrganization(ctx context.Context, name string) (*model.Organization, error) {
+	return store.GetOrganizationByName(ctx, s.db, name)
+}
+
+func (s *ormStore) GetProvider(ctx context.Context, owner, name string) (*model.Provider, error) {
+	return store.GetProvider(ctx, s.db, owner, name)
+}
+
+func (s *ormStore) GetCert(ctx context.Context, owner, name string) (*model.Cert, error) {
+	return store.GetCert(ctx, s.db, owner, name)
+}
+
+// SetPassword loads the canonical row and re-saves it with the plaintext, which
+// users.Update hashes exactly once (empty leaves the digest untouched). Passing
+// the full existing row means no other field is zeroed by the update.
+func (s *ormStore) SetPassword(ctx context.Context, owner, name, plaintext string) (bool, error) {
+	u, err := store.GetUserByName(ctx, s.db, owner, name)
+	if err != nil {
+		return false, err
+	}
+	if u == nil {
+		return false, nil
+	}
+	if _, err := s.u.Update(ctx, &users.UpdateInput{User: *u, Password: plaintext}); err != nil {
+		return false, err
+	}
+	return true, nil
+}
+
+// VerifyPassword defers to the core's digest-scheme-aware verifier (argon2id v1 /
+// bcrypt v2), keyed by the org's password type — no hash ever leaves the core.
+func (s *ormStore) VerifyPassword(ctx context.Context, owner, name, plaintext string) (bool, error) {
+	u, err := store.GetUserByName(ctx, s.db, owner, name)
+	if err != nil {
+		return false, err
+	}
+	if u == nil {
+		return false, nil
+	}
+	pwType := ""
+	if org, oerr := store.GetOrganizationByName(ctx, s.db, owner); oerr == nil && org != nil {
+		pwType = org.PasswordType
+	}
+	return users.VerifyPassword(u, plaintext, pwType), nil
+}

internal/httpx/response.go

@@ -0,0 +1,85 @@
+// Copyright 2026 Hanzo AI, Inc. All rights reserved.
+
+// Package httpx is the shared HTTP layer for the IAM v2 handlers: the
+// Casdoor-compatible Response envelope that the @hanzo/iam SDK and the hanzo.id
+// portal consume, plus small helpers over zip.Ctx. Every front-door JSON
+// endpoint (get-app-login, login, signup) returns this shape; the OIDC
+// endpoints (token/authorize/userinfo) use their own RFC 6749 shapes.
+package httpx
+
+import (
+	"encoding/base64"
+	"strings"
+
+	"github.com/zap-proto/zip"
+)
+
+// Response is the Casdoor-compatible envelope. status is "ok" or "error"; a
+// non-ok status rides on a 200 (every SDK branches on status, not the HTTP
+// code — preserving that contract keeps the clients unchanged at cutover).
+type Response struct {
+	Status string `json:"status"`
+	Msg    string `json:"msg"`
+	Sub    string `json:"sub,omitempty"`
+	Name   string `json:"name,omitempty"`
+	Data   any    `json:"data"`
+	Data2  any    `json:"data2,omitempty"`
+	Data3  any    `json:"data3,omitempty"`
+}
+
+// Ok writes 200 { status:"ok", data }.
+func Ok(c *zip.Ctx, data any, more ...any) error {
+	r := Response{Status: "ok", Data: data}
+	if len(more) > 0 {
+		r.Data2 = more[0]
+	}
+	return c.JSON(200, r)
+}
+
+// Err writes 200 { status:"error", msg } — the SDK contract (branch on status,
+// not HTTP code).
+func Err(c *zip.Ctx, msg string) error {
+	return c.JSON(200, Response{Status: "error", Msg: msg})
+}
+
+// Bearer returns the token from an `Authorization: Bearer <token>` header, or "".
+func Bearer(c *zip.Ctx) string {
+	const p = "Bearer "
+	h := c.Header("Authorization")
+	if len(h) > len(p) && h[:len(p)] == p {
+		return h[len(p):]
+	}
+	return ""
+}
+
+// Basic returns the (id, secret) an `Authorization: Basic <base64>` header carries,
+// and whether it carried one — RFC 7617: base64 of "<id>:<secret>", split on the
+// FIRST colon so a secret may contain one. This is the ONE Basic parser; a caller
+// bound by RFC 6749 §2.3.1 (client_secret_basic, whose halves are form-urlencoded
+// before the base64) form-decodes the two values afterwards.
+func Basic(c *zip.Ctx) (id, secret string, ok bool) {
+	const p = "Basic "
+	h := c.Header("Authorization")
+	if len(h) <= len(p) || !strings.EqualFold(h[:len(p)], p) {
+		return "", "", false
+	}
+	raw, err := base64.StdEncoding.DecodeString(strings.TrimSpace(h[len(p):]))
+	if err != nil {
+		return "", "", false
+	}
+	id, secret, found := strings.Cut(string(raw), ":")
+	if !found {
+		return "", "", false
+	}
+	return id, secret, true
+}
+
+// EffectiveHost is the request host used to build a host-relative issuer, so
+// discovery/JWKS never split-origin (HIP-0111). Honors X-Forwarded-Host when
+// the request came through the ingress/gateway.
+func EffectiveHost(c *zip.Ctx) string {
+	if h := c.Header("X-Forwarded-Host"); h != "" {
+		return h
+	}
+	return c.Header("Host")
+}

internal/invitations/invitations.go

@@ -0,0 +1,193 @@
+// Copyright 2026 Hanzo AI, Inc. All rights reserved.
+
+// Package invitations serves the IAM v2 CRUD surface for the `invitations`
+// entity: a pending org-membership invite owner-scoped by (owner, name). Every
+// operation is a typed zip handler over hanzoai/orm; the orm string key is
+// "owner/name". Reads scope to one owner (organization); writes address one
+// invitation by its (owner, name) key.
+package invitations
+
+import (
+	"context"
+	"errors"
+	"time"
+
+	"github.com/hanzoai/orm"
+	"github.com/zap-proto/zip"
+
+	"github.com/hanzoai/iam/internal/schema"
+)
+
+// Handler binds the invitations operations to one orm store.
+type Handler struct {
+	db orm.DB
+}
+
+// Route registers the invitations CRUD routes on app against db.
+func Route(app *zip.App, db orm.DB) {
+	h := &Handler{db: db}
+	zip.Get(app, "/v1/iam/invitations", h.List, zip.WithSummary("List invitations for an owner"), zip.WithTags("invitations"))
+	zip.Post(app, "/v1/iam/invitations", h.Create, zip.WithSummary("Create an invitation"), zip.WithTags("invitations"))
+	zip.Post(app, "/v1/iam/invitations/get", h.Get, zip.WithSummary("Get one invitation"), zip.WithTags("invitations"))
+	zip.Post(app, "/v1/iam/invitations/update", h.Update, zip.WithSummary("Update an invitation"), zip.WithTags("invitations"))
+	zip.Post(app, "/v1/iam/invitations/delete", h.Delete, zip.WithSummary("Delete an invitation"), zip.WithTags("invitations"))
+}
+
+// Ref addresses one invitation by its owner-scoped natural key.
+type Ref struct {
+	Owner string `json:"owner"`
+	Name  string `json:"name"`
+}
+
+// Input is the writable projection of an invitation (the v1 add/update-invitation
+// body). It keeps the wire contract clean of the orm.Model bookkeeping fields.
+type Input struct {
+	Owner       string `json:"owner"`
+	Name        string `json:"name"`
+	CreatedTime string `json:"createdTime"`
+	UpdatedTime string `json:"updatedTime"`
+	DisplayName string `json:"displayName"`
+	Code        string `json:"code"`
+	IsRegexp    bool   `json:"isRegexp"`
+	Quota       int    `json:"quota"`
+	UsedCount   int    `json:"usedCount"`
+	Application string `json:"application"`
+	Username    string `json:"username"`
+	Email       string `json:"email"`
+	Phone       string `json:"phone"`
+	SignupGroup string `json:"signupGroup"`
+	DefaultCode string `json:"defaultCode"`
+	State       string `json:"state"`
+}
+
+// ListInput scopes a listing to one owner (organization).
+type ListInput struct {
+	Owner string `json:"owner"`
+}
+
+// ListOutput is the owner-scoped page of invitations.
+type ListOutput struct {
+	Invitations []*schema.Invitation `json:"invitations"`
+	Total       int                  `json:"total"`
+}
+
+// DeleteOutput reports the delete result.
+type DeleteOutput struct {
+	Deleted bool `json:"deleted"`
+}
+
+// key builds the orm string key from the (owner, name) natural key.
+func key(owner, name string) string { return owner + "/" + name }
+
+// apply copies the mutable domain fields of an Input onto an invitation. The
+// identity fields (owner, name) and the created stamp are set only on Create,
+// never overwritten by an update.
+func apply(dst *schema.Invitation, in *Input) {
+	dst.UpdatedTime = in.UpdatedTime
+	dst.DisplayName = in.DisplayName
+	dst.Code = in.Code
+	dst.IsRegexp = in.IsRegexp
+	dst.Quota = in.Quota
+	dst.UsedCount = in.UsedCount
+	dst.Application = in.Application
+	dst.Username = in.Username
+	dst.Email = in.Email
+	dst.Phone = in.Phone
+	dst.SignupGroup = in.SignupGroup
+	dst.DefaultCode = in.DefaultCode
+	dst.State = in.State
+}
+
+// List returns the invitations for one owner, newest first. An empty owner
+// lists every invitation (the unscoped admin view).
+func (h *Handler) List(ctx context.Context, in *ListInput) (*ListOutput, error) {
+	q := orm.TypedQuery[schema.Invitation](h.db)
+	if in.Owner != "" {
+		q = q.Filter("owner", in.Owner)
+	}
+	invitations, err := q.Order("-createdTime").GetAll(ctx)
+	if err != nil {
+		return nil, zip.ErrInternal(err.Error())
+	}
+	return &ListOutput{Invitations: invitations, Total: len(invitations)}, nil
+}
+
+// Get returns one invitation addressed by (owner, name).
+func (h *Handler) Get(ctx context.Context, in *Ref) (*schema.Invitation, error) {
+	if in.Owner == "" || in.Name == "" {
+		return nil, zip.ErrBadRequest("owner and name are required")
+	}
+	invitation, err := orm.Get[schema.Invitation](h.db, key(in.Owner, in.Name))
+	if err != nil {
+		return nil, mapErr(err)
+	}
+	return invitation, nil
+}
+
+// Create persists a new invitation. It rejects a duplicate (owner, name).
+func (h *Handler) Create(ctx context.Context, in *Input) (*schema.Invitation, error) {
+	if in.Owner == "" || in.Name == "" {
+		return nil, zip.ErrBadRequest("owner and name are required")
+	}
+	switch _, err := orm.Get[schema.Invitation](h.db, key(in.Owner, in.Name)); {
+	case err == nil:
+		return nil, zip.ErrConflict("invitation already exists")
+	case !errors.Is(err, orm.ErrNotFound):
+		return nil, zip.ErrInternal(err.Error())
+	}
+
+	invitation := orm.New[schema.Invitation](h.db)
+	invitation.Owner = in.Owner
+	invitation.Name = in.Name
+	invitation.CreatedTime = in.CreatedTime
+	if invitation.CreatedTime == "" {
+		invitation.CreatedTime = time.Now().UTC().Format(time.RFC3339)
+	}
+	apply(invitation, in)
+	invitation.SetId(key(in.Owner, in.Name))
+
+	if err := invitation.CreateCtx(ctx); err != nil {
+		return nil, zip.ErrInternal(err.Error())
+	}
+	return invitation, nil
+}
+
+// Update mutates an existing invitation. Identity and created stamp are
+// immutable; a missing invitation is a 404.
+func (h *Handler) Update(ctx context.Context, in *Input) (*schema.Invitation, error) {
+	if in.Owner == "" || in.Name == "" {
+		return nil, zip.ErrBadRequest("owner and name are required")
+	}
+	invitation, err := orm.Get[schema.Invitation](h.db, key(in.Owner, in.Name))
+	if err != nil {
+		return nil, mapErr(err)
+	}
+	apply(invitation, in)
+	if err := invitation.UpdateCtx(ctx); err != nil {
+		return nil, zip.ErrInternal(err.Error())
+	}
+	return invitation, nil
+}
+
+// Delete removes one invitation addressed by (owner, name).
+func (h *Handler) Delete(ctx context.Context, in *Ref) (*DeleteOutput, error) {
+	if in.Owner == "" || in.Name == "" {
+		return nil, zip.ErrBadRequest("owner and name are required")
+	}
+	invitation, err := orm.Get[schema.Invitation](h.db, key(in.Owner, in.Name))
+	if err != nil {
+		return nil, mapErr(err)
+	}
+	if err := invitation.DeleteCtx(ctx); err != nil {
+		return nil, zip.ErrInternal(err.Error())
+	}
+	return &DeleteOutput{Deleted: true}, nil
+}
+
+// mapErr translates an orm lookup error into the matching HTTP status.
+func mapErr(err error) error {
+	if errors.Is(err, orm.ErrNotFound) {
+		return zip.ErrNotFound("invitation not found")
+	}
+	return zip.ErrInternal(err.Error())
+}

internal/keys/keys.go

@@ -0,0 +1,205 @@
+// Copyright 2026 Hanzo AI, Inc. All rights reserved.
+
+// Package keys serves the owner-scoped CRUD surface for the `keys` entity
+// (v1 Casdoor `key`) as typed zip handlers over hanzoai/orm.
+//
+// Identity is the (owner, name) pair; it maps onto the orm storage id as
+// "owner/name", exactly as the v1 record addressed itself. Reads are
+// zip.Get[In,Out], writes are zip.Post[In,Out]; every handler closes over the
+// one orm.DB entity store so the typed signatures carry no transport or
+// storage plumbing.
+package keys
+
+import (
+	"context"
+	"crypto/rand"
+	"encoding/hex"
+	"errors"
+	"fmt"
+	"time"
+
+	"github.com/hanzoai/orm"
+	"github.com/zap-proto/zip"
+
+	"github.com/hanzoai/iam/internal/schema"
+)
+
+// Route registers the key CRUD routes on app, binding each handler to db.
+// Called from routes.Mount once it is threaded the entity store.
+func Route(app *zip.App, db orm.DB) {
+	zip.Get(app, "/v1/iam/keys", list(db),
+		zip.WithSummary("List keys in an owner"), zip.WithTags("keys"))
+	zip.Get(app, "/v1/iam/key", get(db),
+		zip.WithSummary("Get a key by (owner, name)"), zip.WithTags("keys"))
+	zip.Post(app, "/v1/iam/key", create(db),
+		zip.WithSummary("Create a key"), zip.WithTags("keys"))
+	zip.Post(app, "/v1/iam/key/update", update(db),
+		zip.WithSummary("Update a key"), zip.WithTags("keys"))
+	zip.Post(app, "/v1/iam/key/delete", del(db),
+		zip.WithSummary("Delete a key"), zip.WithTags("keys"))
+}
+
+// ListRequest scopes a listing to one owner.
+type ListRequest struct {
+	Owner string `json:"owner"`
+}
+
+// ListResponse is the owner-scoped key set, newest first.
+type ListResponse struct {
+	Keys []schema.Key `json:"keys"`
+}
+
+// Ref addresses one key by its (owner, name) identity.
+type Ref struct {
+	Owner string `json:"owner"`
+	Name  string `json:"name"`
+}
+
+// DeleteResponse reports whether the key was removed.
+type DeleteResponse struct {
+	Deleted bool `json:"deleted"`
+}
+
+// id joins the owner-scoped natural key into the orm storage id — the same
+// "owner/name" identity the v1 record used.
+func id(owner, name string) string { return owner + "/" + name }
+
+// list returns every key under in.Owner, newest first.
+func list(db orm.DB) zip.TypedHandler[ListRequest, ListResponse] {
+	return func(ctx context.Context, in *ListRequest) (*ListResponse, error) {
+		if in.Owner == "" {
+			return nil, zip.ErrBadRequest("owner is required")
+		}
+		items, err := orm.TypedQuery[schema.Key](db).
+			Filter("Owner=", in.Owner).
+			Order("-CreatedTime").
+			GetAll(ctx)
+		if err != nil {
+			return nil, zip.ErrInternal(err.Error())
+		}
+		out := &ListResponse{Keys: make([]schema.Key, 0, len(items))}
+		for _, k := range items {
+			out.Keys = append(out.Keys, *k)
+		}
+		return out, nil
+	}
+}
+
+// get resolves one key by (owner, name).
+func get(db orm.DB) zip.TypedHandler[Ref, schema.Key] {
+	return func(_ context.Context, in *Ref) (*schema.Key, error) {
+		if in.Owner == "" || in.Name == "" {
+			return nil, zip.ErrBadRequest("owner and name are required")
+		}
+		k, err := orm.Get[schema.Key](db, id(in.Owner, in.Name))
+		if errors.Is(err, orm.ErrNotFound) {
+			return nil, zip.ErrNotFound("key not found: " + id(in.Owner, in.Name))
+		}
+		if err != nil {
+			return nil, zip.ErrInternal(err.Error())
+		}
+		return k, nil
+	}
+}
+
+// create inserts a new key under (owner, name), minting any missing pk-/sk-
+// credential halves. It refuses to overwrite an existing key.
+func create(db orm.DB) zip.TypedHandler[schema.Key, schema.Key] {
+	return func(ctx context.Context, in *schema.Key) (*schema.Key, error) {
+		if in.Owner == "" || in.Name == "" {
+			return nil, zip.ErrBadRequest("owner and name are required")
+		}
+		if _, err := orm.Get[schema.Key](db, id(in.Owner, in.Name)); err == nil {
+			return nil, zip.ErrConflict("key already exists: " + id(in.Owner, in.Name))
+		} else if !errors.Is(err, orm.ErrNotFound) {
+			return nil, zip.ErrInternal(err.Error())
+		}
+
+		k := orm.New[schema.Key](db)
+		k.SetId(id(in.Owner, in.Name))
+		k.Owner, k.Name = in.Owner, in.Name
+		apply(k, in)
+		if k.AccessKey == "" {
+			k.AccessKey = Mint("pk", k.State)
+		}
+		if k.AccessSecret == "" {
+			k.AccessSecret = Mint("sk", k.State)
+		}
+		now := time.Now().UTC().Format(time.RFC3339)
+		k.CreatedTime, k.UpdatedTime = now, now
+
+		if err := k.CreateCtx(ctx); err != nil {
+			return nil, zip.ErrInternal(err.Error())
+		}
+		return k, nil
+	}
+}
+
+// update overwrites the mutable fields of an existing key, keyed by
+// (owner, name), and re-stamps UpdatedTime.
+func update(db orm.DB) zip.TypedHandler[schema.Key, schema.Key] {
+	return func(ctx context.Context, in *schema.Key) (*schema.Key, error) {
+		if in.Owner == "" || in.Name == "" {
+			return nil, zip.ErrBadRequest("owner and name are required")
+		}
+		k, err := orm.Get[schema.Key](db, id(in.Owner, in.Name))
+		if errors.Is(err, orm.ErrNotFound) {
+			return nil, zip.ErrNotFound("key not found: " + id(in.Owner, in.Name))
+		}
+		if err != nil {
+			return nil, zip.ErrInternal(err.Error())
+		}
+		apply(k, in)
+		k.UpdatedTime = time.Now().UTC().Format(time.RFC3339)
+		if err := k.UpdateCtx(ctx); err != nil {
+			return nil, zip.ErrInternal(err.Error())
+		}
+		return k, nil
+	}
+}
+
+// del removes a key by (owner, name).
+func del(db orm.DB) zip.TypedHandler[Ref, DeleteResponse] {
+	return func(ctx context.Context, in *Ref) (*DeleteResponse, error) {
+		if in.Owner == "" || in.Name == "" {
+			return nil, zip.ErrBadRequest("owner and name are required")
+		}
+		k, err := orm.Get[schema.Key](db, id(in.Owner, in.Name))
+		if errors.Is(err, orm.ErrNotFound) {
+			return nil, zip.ErrNotFound("key not found: " + id(in.Owner, in.Name))
+		}
+		if err != nil {
+			return nil, zip.ErrInternal(err.Error())
+		}
+		if err := k.DeleteCtx(ctx); err != nil {
+			return nil, zip.ErrInternal(err.Error())
+		}
+		return &DeleteResponse{Deleted: true}, nil
+	}
+}
+
+// apply copies the caller-settable fields from src onto dst, leaving the
+// (owner, name) identity, storage id, and audit stamps under handler control.
+func apply(dst, src *schema.Key) {
+	dst.DisplayName = src.DisplayName
+	dst.Type = src.Type
+	dst.Organization = src.Organization
+	dst.Application = src.Application
+	dst.User = src.User
+	dst.AccessKey = src.AccessKey
+	dst.AccessSecret = src.AccessSecret
+	dst.ExpireTime = src.ExpireTime
+	dst.State = src.State
+}
+
+// mint generates a prefixed credential half — "{pk|sk}-{live|test}-{random}"
+// — mirroring the v1 key format. State == "test" selects the test env.
+func Mint(prefix, state string) string {
+	env := "live"
+	if state == "test" {
+		env = "test"
+	}
+	var b [16]byte
+	_, _ = rand.Read(b[:])
+	return fmt.Sprintf("%s-%s-%s", prefix, env, hex.EncodeToString(b[:]))
+}

internal/memberships/memberships.go

@@ -0,0 +1,133 @@
+// Copyright 2026 Hanzo AI, Inc. All rights reserved.
+
+// Package memberships serves the (User × Org × Role) tenancy relation — which
+// orgs an identity may act in, and with what coarse role. It is the set a token
+// carries as the `orgs` claim, which is what lets the edge authorize an
+// org-switch statelessly (X-Org-Id ∈ orgs).
+//
+// A user's HOME org (User.Owner) is always an implicit membership — the token
+// consumer treats it as one — so an explicit row is only ever needed for a TEAM
+// org the identity was invited into. The boot backfill seeds the home row anyway,
+// so an org's roster is complete from one query.
+//
+// This is the transport face. The relation's operations are store's
+// (EnsureMembership, MembershipsByUser/ByOrg), because the token mint needs them
+// too and it sits below the authorization seam this face sits above.
+package memberships
+
+import (
+	"context"
+	"strings"
+
+	"github.com/hanzoai/orm"
+	"github.com/zap-proto/zip"
+
+	"github.com/hanzoai/iam/internal/authz"
+	"github.com/hanzoai/iam/internal/httpx"
+	"github.com/hanzoai/iam/internal/schema"
+	"github.com/hanzoai/iam/internal/store"
+)
+
+// Path is the verb face: GET lists by ?user= or ?org=, POST ensures one.
+const Path = "/v1/iam/memberships"
+
+// unauthorized is v1's refusal message, verbatim.
+const unauthorized = "auth:Unauthorized operation"
+
+// Route registers the membership surface on app, backed by db.
+func Route(app *zip.App, db orm.DB) {
+	app.Get(Path, list(db))
+	app.Post(Path, ensure(db))
+}
+
+// request is the ensure body.
+type request struct {
+	User string `json:"user"` // "<homeOrg>/<username>"
+	Org  string `json:"org"`
+	Role string `json:"role"`
+}
+
+// list serves GET /v1/iam/memberships?user=<owner/name> or ?org=<slug> — one
+// identity's orgs, or one org's roster.
+//
+// Both are org-scoped: a non-SuperAdmin may ask about ITS OWN org's roster, or
+// about a user whose home org is its own, and nothing else. The bound comes from
+// the verified credential via authz.Scope, so a request parameter can never
+// widen it — a membership row names who may act and spend in an org, so a
+// cross-tenant read is a customer roster leak.
+func list(db orm.DB) zip.Handler {
+	return func(c *zip.Ctx) error {
+		ctx := c.Context()
+		user, org := c.Query("user"), c.Query("org")
+		if (user == "") == (org == "") {
+			return httpx.Err(c, "exactly one of user or org is required")
+		}
+		if org != "" {
+			if !scoped(ctx, org) {
+				return httpx.Err(c, unauthorized)
+			}
+			rows, err := store.MembershipsByOrg(ctx, db, org)
+			return listed(c, rows, err)
+		}
+		// A user id is "<homeOrg>/<name>": its home org is the tenant bound here.
+		home, _, found := strings.Cut(user, "/")
+		if !found || home == "" {
+			return httpx.Err(c, "user must be <owner>/<name>")
+		}
+		if !scoped(ctx, home) {
+			return httpx.Err(c, unauthorized)
+		}
+		rows, err := store.MembershipsByUser(ctx, db, user)
+		return listed(c, rows, err)
+	}
+}
+
+// ensure serves POST /v1/iam/memberships — grant an identity the right to act in
+// an org. Granting membership IS the org's authority to give, so it takes the
+// same gate a write to that org's own registry row takes: a SuperAdmin, an admin
+// of the org itself, or an org-admin-capable confidential client. One rule, one
+// place (internal/authz).
+func ensure(db orm.DB) zip.Handler {
+	return func(c *zip.Ctx) error {
+		ctx := c.Context()
+		var in request
+		if err := c.Bind(&in); err != nil {
+			return httpx.Err(c, err.Error())
+		}
+		if in.User == "" || in.Org == "" {
+			return httpx.Err(c, "user and org are required")
+		}
+		switch in.Role {
+		case store.RoleOwner, store.RoleAdmin, store.RoleMember:
+		case "":
+			in.Role = store.RoleMember
+		default:
+			return httpx.Err(c, "role must be owner, admin, or member")
+		}
+		if !authz.Can(ctx, "POST", "organizations", store.MembershipOwner, in.Org) {
+			return httpx.Err(c, unauthorized)
+		}
+		added, err := store.EnsureMembership(ctx, db, in.User, in.Org, in.Role)
+		if err != nil {
+			return httpx.Err(c, err.Error())
+		}
+		return httpx.Ok(c, added)
+	}
+}
+
+// scoped reports whether the caller may read the membership rows of org — i.e.
+// whether resolving the scope from its own verified credential yields exactly
+// the org it asked for. A SuperAdmin gets what it asks for; anyone else gets its
+// own org, so any other request fails the equality and is refused.
+func scoped(ctx context.Context, org string) bool {
+	got, err := authz.Scope(ctx, org)
+	return err == nil && got == org
+}
+
+// listed writes a membership listing, or the error envelope on failure.
+func listed(c *zip.Ctx, rows []*schema.Membership, err error) error {
+	if err != nil {
+		return httpx.Err(c, err.Error())
+	}
+	return c.JSON(200, httpx.Response{Status: "ok", Data: rows, Data2: len(rows)})
+}

internal/mfa/factor/factor.go

@@ -0,0 +1,269 @@
+// Copyright 2026 Hanzo AI, Inc. All rights reserved.
+
+package factor
+
+import (
+	"context"
+	"crypto/rand"
+	"encoding/base32"
+	"errors"
+	"strings"
+
+	"github.com/hanzoai/orm"
+	"github.com/pquerna/otp/totp"
+	"golang.org/x/crypto/bcrypt"
+
+	"github.com/hanzoai/iam/internal/schema"
+	"github.com/hanzoai/iam/internal/store"
+)
+
+// Package factor is the pure multi-factor DOMAIN — what a factor IS, whether a
+// passcode verifies, which factors a user has, whether the org demands one, and
+// how that state is written. It is the ONE implementation both the enrollment
+// surface (internal/mfa) and the login-time second-factor gate (internal/oidc)
+// call, so the Verify the challenge runs is the one enrollment's setup check uses
+// and the Save every MFA write goes through cannot drift apart.
+//
+// It is a LEAF: it imports only store + schema, never authz or oidc. That is what
+// lets the gate (in oidc, which authz imports) use it without an import cycle,
+// while the enrollment surface (which does need authz) uses it too — one domain,
+// two callers, no duplication. Radius and push are deliberately absent: no v2
+// provider transport serves them, and a factor listed as available but unservable
+// is an unusable challenge.
+
+// The factor types, verbatim from v1 (object/mfa.go:42-48). "app" is TOTP — the
+// name is v1's and it is on the wire, so it does not get "improved".
+const (
+	App   = "app"
+	SMS   = "sms"
+	Email = "email"
+)
+
+// Types lists the factors this package can project, in v1's order. It bounds
+// AllProps: a factor absent here is never offered on a challenge.
+var Types = []string{SMS, Email, App}
+
+// errNoUser is the ONE answer to an unresolvable MFA subject.
+var errNoUser = errors.New("user doesn't exist")
+
+// Enroll generates a fresh TOTP secret for userID ("owner/name") and the
+// otpauth:// URL that encodes it, using the RFC 6238 defaults every authenticator
+// app assumes (the same totp.Generate defaults the enrollment surface uses). It
+// persists NOTHING: enrollment is stateless and client-held until enable commits
+// it.
+func Enroll(userID, issuer string) (secret, url string, err error) {
+	if issuer == "" {
+		issuer = "Hanzo"
+	}
+	key, err := totp.Generate(totp.GenerateOpts{Issuer: issuer, AccountName: userID})
+	if err != nil {
+		return "", "", err
+	}
+	return key.Secret(), key.URL(), nil
+}
+
+// Verify reports whether passcode is currently valid for secret. It is the ONE
+// TOTP verification point — enrollment's setup check and the login challenge call
+// this same function, so they cannot drift apart. totp.Validate accepts the
+// adjacent windows (skew 1), tolerating clock drift.
+func Verify(secret, passcode string) bool {
+	if secret == "" || passcode == "" {
+		return false
+	}
+	return totp.Validate(passcode, secret)
+}
+
+// recoveryBytes is the entropy behind one recovery code: 20 bytes → 32 base32
+// characters, the same strength as the TOTP secret it backs up.
+const recoveryBytes = 20
+
+// MintRecovery returns one fresh recovery code, in the clear, for the user to write
+// down. It asks crypto/rand for a secret directly (not a formatted identifier).
+func MintRecovery() (string, error) {
+	b := make([]byte, recoveryBytes)
+	if _, err := rand.Read(b); err != nil {
+		return "", err
+	}
+	return strings.ToLower(base32.StdEncoding.WithPadding(base32.NoPadding).EncodeToString(b)), nil
+}
+
+// HashRecovery is the digest a recovery code is STORED as. A recovery code is a
+// bearer credential verified by equality alone, so — unlike the TOTP secret, which
+// the verifier needs back in the clear — it hashes like a password.
+func HashRecovery(plain string) (string, error) {
+	h, err := bcrypt.GenerateFromPassword([]byte(plain), bcrypt.DefaultCost)
+	return string(h), err
+}
+
+// HashRecoveryCodes digests each plaintext recovery code for storage — enrollment
+// hands the user the plaintext (the QR's backup code) exactly once and keeps only
+// the digest, so a database dump exposes no usable recovery credential.
+func HashRecoveryCodes(plain []string) ([]string, error) {
+	out := make([]string, 0, len(plain))
+	for _, p := range plain {
+		h, err := HashRecovery(p)
+		if err != nil {
+			return nil, err
+		}
+		out = append(out, h)
+	}
+	return out, nil
+}
+
+// UseRecovery consumes one of the user's recovery codes, reporting whether code
+// matched. A hit is DELETED from u.RecoveryCodes in place — one-time use — and the
+// caller persists the row.
+//
+// Stored codes are bcrypt digests, but every code migrated from v1 is PLAINTEXT
+// (object/mfa.go:81 compares in the clear), so a stored value that is not a digest
+// is compared literally. The algorithm is a property of the stored value, never a
+// constant — the same rule the password path lives by. A legacy hit is spent and
+// removed like any other, so the plaintext dies on first use.
+func UseRecovery(u *schema.User, code string) bool {
+	if u == nil || code == "" {
+		return false
+	}
+	for i, stored := range u.RecoveryCodes {
+		if !recoveryMatches(stored, code) {
+			continue
+		}
+		u.RecoveryCodes = append(u.RecoveryCodes[:i:i], u.RecoveryCodes[i+1:]...)
+		return true
+	}
+	return false
+}
+
+// recoveryMatches compares one presented code against one stored value, choosing
+// the comparison from what the value IS: a bcrypt digest is verified with bcrypt,
+// a v1-era plaintext by equality.
+func recoveryMatches(stored, code string) bool {
+	if isBcrypt(stored) {
+		return bcrypt.CompareHashAndPassword([]byte(stored), []byte(code)) == nil
+	}
+	return stored != "" && stored == code
+}
+
+// isBcrypt reports whether s is a bcrypt digest by asking the library's own parser
+// (bcrypt.Cost), so the answer comes from the format itself rather than a guess.
+func isBcrypt(s string) bool {
+	_, err := bcrypt.Cost([]byte(s))
+	return err == nil
+}
+
+// Enabled reports whether the user has multi-factor sign-in on. The predicate is
+// PreferredMfaType != "" and nothing else (v1 object/user.go:1641): the per-factor
+// enabled flags say which factors exist, not whether the gate runs.
+func Enabled(u *schema.User) bool { return u != nil && u.PreferredMfaType != "" }
+
+// Prompt reports whether the organization REQUIRES a factor the user has not
+// enrolled yet — the sign-in must divert to enrollment before it can finish. The
+// user's own MfaItems override the org's entirely when present (not merge: v1
+// object/organization.go:770-792), so a per-user policy is a replacement.
+func Prompt(org *schema.Organization, u *schema.User) bool {
+	if org == nil || u == nil {
+		return false
+	}
+	items := org.MfaItems
+	if len(u.MfaItems) > 0 {
+		items = u.MfaItems
+	}
+	for _, item := range items {
+		if item == nil || item.Rule != "Required" {
+			continue
+		}
+		switch item.Name {
+		case Email:
+			if !u.MfaEmailEnabled {
+				return true
+			}
+		case SMS:
+			if !u.MfaPhoneEnabled {
+				return true
+			}
+		case App:
+			if u.TotpSecret == "" {
+				return true
+			}
+		}
+	}
+	return false
+}
+
+// Props projects one factor of the user for a client, ALWAYS masked: Secret and
+// RecoveryCodes are never populated (and are json:"-" besides). The login-gate
+// verifier reads u.TotpSecret directly, so this projection has no unmasked mode to
+// misuse.
+func Props(u *schema.User, mfaType string) *schema.MfaProps {
+	p := &schema.MfaProps{MfaType: mfaType}
+	if u == nil {
+		return p
+	}
+	switch mfaType {
+	case SMS:
+		p.Enabled = u.MfaPhoneEnabled
+		if p.Enabled {
+			p.CountryCode = u.CountryCode
+		}
+	case Email:
+		p.Enabled = u.MfaEmailEnabled
+	case App:
+		p.Enabled = u.TotpSecret != ""
+	}
+	if !p.Enabled {
+		return &schema.MfaProps{MfaType: mfaType}
+	}
+	p.IsPreferred = u.PreferredMfaType == mfaType
+	return p
+}
+
+// AllProps projects every factor this package serves, masked, in v1's order.
+func AllProps(u *schema.User) []*schema.MfaProps {
+	all := make([]*schema.MfaProps, 0, len(Types))
+	for _, t := range Types {
+		all = append(all, Props(u, t))
+	}
+	return all
+}
+
+// Copy overwrites dst's multi-factor state with src's, and nothing else. It is the
+// ONE declaration of which columns ARE multi-factor state, so every writer agrees
+// on the set by construction: Save overlays a caller's factors onto the STORED row
+// through this, which is what makes an MFA write column-scoped — the request's user
+// value never reaches the store, so it cannot carry isAdmin along and self-promote.
+func Copy(dst, src *schema.User) {
+	if dst == nil || src == nil {
+		return
+	}
+	dst.PreferredMfaType = src.PreferredMfaType
+	dst.RecoveryCodes = src.RecoveryCodes
+	dst.TotpSecret = src.TotpSecret
+	dst.MfaPhoneEnabled = src.MfaPhoneEnabled
+	dst.MfaEmailEnabled = src.MfaEmailEnabled
+	dst.MfaRadiusEnabled = src.MfaRadiusEnabled
+	dst.MfaRadiusUsername = src.MfaRadiusUsername
+	dst.MfaRadiusProvider = src.MfaRadiusProvider
+	dst.MfaPushEnabled = src.MfaPushEnabled
+	dst.MfaPushReceiver = src.MfaPushReceiver
+	dst.MfaPushProvider = src.MfaPushProvider
+	dst.MfaRememberDeadline = src.MfaRememberDeadline
+}
+
+// Save writes u's multi-factor state — and ONLY that — onto its stored row. It is
+// the single write point for every MFA mutation the login gate makes: spend a
+// recovery code, remember a device. The scoping is what makes it safe: the row is
+// loaded fresh and Copy overlays exactly the multi-factor columns, so an isAdmin,
+// a balance, or a password digest arriving on an MFA request reaches nothing.
+func Save(ctx context.Context, db orm.DB, u *schema.User) error {
+	if u == nil {
+		return errNoUser
+	}
+	stored, err := store.GetUserByName(ctx, db, u.Owner, u.Name)
+	if err != nil {
+		return err
+	}
+	if stored == nil {
+		return errNoUser
+	}
+	Copy(stored, u)
+	return stored.UpdateCtx(ctx)
+}

internal/mfa/mfa.go

@@ -0,0 +1,266 @@
+// Copyright 2026 Hanzo AI, Inc. All rights reserved.
+
+// Package mfa serves the TOTP multi-factor enrollment surface — the account
+// security page's initiate → verify → enable flow (RFC 6238 TOTP), plus
+// delete-mfa and set-preferred-mfa. Enrollment is SELF-SERVICE: every handler
+// acts on the AUTHENTICATED caller's own user record (authz.From), so the routes
+// mount AFTER the Guard — they need the Principal. Touching a DIFFERENT user's
+// MFA requires admin authority over that org, authorized through the SAME seam a
+// SCIM write uses (authz.Can); the general user-write policy correctly refuses a
+// non-admin writing a user row, so self-enrollment is authorized by
+// self-ownership (target == principal), NOT by that policy.
+//
+// The handshake is STATELESS across the three calls: initiate mints a TOTP
+// secret + otpauth URL + recovery code and hands them to the client; the client
+// renders the QR, the authenticator app derives a passcode, verify checks it
+// against the SAME secret the client echoes back, and enable persists the secret
+// + recovery code to the user. No pending secret is parked server-side between
+// calls — it is client-held until enable commits it.
+package mfa
+
+import (
+	"crypto/rand"
+	"encoding/base32"
+	"encoding/json"
+	"errors"
+	"os"
+	"strings"
+
+	"github.com/pquerna/otp/totp"
+	"github.com/zap-proto/zip"
+
+	"github.com/hanzoai/orm"
+
+	"github.com/hanzoai/iam/internal/authz"
+	"github.com/hanzoai/iam/internal/mfa/factor"
+	"github.com/hanzoai/iam/internal/store"
+)
+
+// The TOTP factor type ("app") and the domain helpers are factor.App et al (internal/mfa/factor).
+
+// Route registers the MFA endpoints on app. They are RAW handlers (not typed
+// ops), so — like SCIM — each authorizes itself; callers mount app AFTER the
+// Guard so a verified Principal rides the request context.
+func Route(app *zip.App, db orm.DB) {
+	app.Post("/v1/iam/mfa/setup/initiate", initiate(db))
+	app.Post("/v1/iam/mfa/setup/verify", verify(db))
+	app.Post("/v1/iam/mfa/setup/enable", enable(db))
+	app.Post("/v1/iam/delete-mfa", disable(db))
+	app.Post("/v1/iam/set-preferred-mfa", setPreferred(db))
+}
+
+// setupReq is the union of fields the enrollment handshake posts. owner/name
+// address the target user (default: the caller itself); secret/passcode/
+// recoveryCodes carry the client-held enrollment material; mfaType selects the
+// preferred factor for set-preferred-mfa.
+type setupReq struct {
+	Owner         string   `json:"owner"`
+	Name          string   `json:"name"`
+	Secret        string   `json:"secret"`
+	Passcode      string   `json:"passcode"`
+	RecoveryCodes []string `json:"recoveryCodes"`
+	MfaType       string   `json:"mfaType"`
+}
+
+// target resolves the (owner, name) an MFA request addresses and authorizes it:
+// the caller may always manage its OWN record; touching another user's MFA
+// requires admin authority over that org (authz.Can — the seam SCIM writes use).
+// An unauthenticated caller fails closed (the Guard already required a bearer, so
+// this is defense in depth). Returns a zip error to return verbatim on refusal.
+func target(c *zip.Ctx, req *setupReq) (owner, name string, err error) {
+	p, present := authz.From(c.Context())
+	if !present {
+		return "", "", zip.ErrUnauthorized("authentication required")
+	}
+	owner, name = strings.TrimSpace(req.Owner), strings.TrimSpace(req.Name)
+	if owner == "" || name == "" {
+		owner, name = p.Org, p.User // default: the caller itself
+	}
+	self := owner == p.Org && name == p.User
+	if !self && !authz.Can(c.Context(), "PUT", "users", owner, name) {
+		return "", "", zip.ErrForbidden("forbidden")
+	}
+	return owner, name, nil
+}
+
+// initiate mints a fresh TOTP secret + otpauth URL + a single recovery code and
+// returns them for the client to display (QR + backup code). Nothing is
+// persisted — the secret is committed only by enable. Response:
+// {status:"ok", data:{secret, url, recoveryCodes:[code]}}.
+func initiate(db orm.DB) zip.Handler {
+	return func(c *zip.Ctx) error {
+		var req setupReq
+		_ = decode(c, &req) // body optional: owner/name default to the caller
+		owner, name, err := target(c, &req)
+		if err != nil {
+			return err
+		}
+		key, err := totp.Generate(totp.GenerateOpts{Issuer: issuer(owner), AccountName: name})
+		if err != nil {
+			return c.JSON(500, errResp("failed to generate secret"))
+		}
+		code, err := recoveryCode()
+		if err != nil {
+			return c.JSON(500, errResp("server_error"))
+		}
+		return c.JSON(200, okData(map[string]any{
+			"secret":        key.Secret(),
+			"url":           key.URL(),
+			"recoveryCodes": []string{code},
+		}))
+	}
+}
+
+// verify checks a passcode against the client-echoed secret (RFC 6238, ±1 step).
+// A valid code → {status:"ok"}; an invalid one → 200 {status:"error"} (the
+// casibase convention: clients branch on status, not the HTTP code).
+func verify(db orm.DB) zip.Handler {
+	return func(c *zip.Ctx) error {
+		var req setupReq
+		if err := decode(c, &req); err != nil {
+			return c.JSON(400, errResp("invalid body"))
+		}
+		if _, _, err := target(c, &req); err != nil {
+			return err
+		}
+		if req.Secret == "" || req.Passcode == "" {
+			return c.JSON(200, errResp("secret and passcode are required"))
+		}
+		if !totp.Validate(req.Passcode, req.Secret) {
+			return c.JSON(200, errResp("the code is incorrect"))
+		}
+		return c.JSON(200, okData(nil))
+	}
+}
+
+// enable commits the client-held secret + recovery code to the target user and
+// marks TOTP the preferred factor. An idempotent overwrite of the MFA fields.
+func enable(db orm.DB) zip.Handler {
+	return func(c *zip.Ctx) error {
+		var req setupReq
+		if err := decode(c, &req); err != nil {
+			return c.JSON(400, errResp("invalid body"))
+		}
+		owner, name, err := target(c, &req)
+		if err != nil {
+			return err
+		}
+		if req.Secret == "" {
+			return c.JSON(200, errResp("secret is required"))
+		}
+		u, err := store.GetUserByName(c.Context(), db, owner, name)
+		if err != nil {
+			return c.JSON(500, errResp("server_error"))
+		}
+		if u == nil {
+			return c.JSON(404, errResp("user not found"))
+		}
+		u.TotpSecret = req.Secret
+		hashed, herr := factor.HashRecoveryCodes(req.RecoveryCodes)
+		if herr != nil {
+			return c.JSON(500, errResp("server_error"))
+		}
+		u.RecoveryCodes = hashed
+		u.PreferredMfaType = factor.App
+		if err := u.UpdateCtx(c.Context()); err != nil {
+			return c.JSON(500, errResp("server_error"))
+		}
+		return c.JSON(200, okData(map[string]any{"preferredMfaType": factor.App}))
+	}
+}
+
+// disable clears every TOTP field on the target user (delete-mfa).
+func disable(db orm.DB) zip.Handler {
+	return func(c *zip.Ctx) error {
+		var req setupReq
+		_ = decode(c, &req) // body optional: owner/name default to the caller
+		owner, name, err := target(c, &req)
+		if err != nil {
+			return err
+		}
+		u, err := store.GetUserByName(c.Context(), db, owner, name)
+		if err != nil {
+			return c.JSON(500, errResp("server_error"))
+		}
+		if u == nil {
+			return c.JSON(404, errResp("user not found"))
+		}
+		u.TotpSecret = ""
+		u.RecoveryCodes = nil
+		u.PreferredMfaType = ""
+		if err := u.UpdateCtx(c.Context()); err != nil {
+			return c.JSON(500, errResp("server_error"))
+		}
+		return c.JSON(200, okData(nil))
+	}
+}
+
+// setPreferred selects which enrolled factor is preferred (set-preferred-mfa).
+func setPreferred(db orm.DB) zip.Handler {
+	return func(c *zip.Ctx) error {
+		var req setupReq
+		if err := decode(c, &req); err != nil {
+			return c.JSON(400, errResp("invalid body"))
+		}
+		owner, name, err := target(c, &req)
+		if err != nil {
+			return err
+		}
+		if strings.TrimSpace(req.MfaType) == "" {
+			return c.JSON(200, errResp("mfaType is required"))
+		}
+		u, err := store.GetUserByName(c.Context(), db, owner, name)
+		if err != nil {
+			return c.JSON(500, errResp("server_error"))
+		}
+		if u == nil {
+			return c.JSON(404, errResp("user not found"))
+		}
+		u.PreferredMfaType = req.MfaType
+		if err := u.UpdateCtx(c.Context()); err != nil {
+			return c.JSON(500, errResp("server_error"))
+		}
+		return c.JSON(200, okData(nil))
+	}
+}
+
+// ---- helpers ----
+
+func decode(c *zip.Ctx, v any) error {
+	body := c.Body()
+	if len(body) == 0 {
+		return errors.New("empty request body")
+	}
+	return json.Unmarshal(body, v)
+}
+
+// issuer is the otpauth issuer label the authenticator app shows: an explicit
+// IAM_MFA_ISSUER override (white-label brand), else the account's org, else Hanzo.
+func issuer(owner string) string {
+	if v := strings.TrimSpace(os.Getenv("IAM_MFA_ISSUER")); v != "" {
+		return v
+	}
+	if owner != "" {
+		return owner
+	}
+	return "Hanzo"
+}
+
+// recoveryCode returns a 160-bit base32 single-use backup code.
+func recoveryCode() (string, error) {
+	b := make([]byte, 20)
+	if _, err := rand.Read(b); err != nil {
+		return "", err
+	}
+	return base32.StdEncoding.WithPadding(base32.NoPadding).EncodeToString(b), nil
+}
+
+func okData(data any) map[string]any {
+	m := map[string]any{"status": "ok"}
+	if data != nil {
+		m["data"] = data
+	}
+	return m
+}
+
+func errResp(msg string) map[string]any { return map[string]any{"status": "error", "msg": msg} }

internal/mfa/mfa_test.go

@@ -0,0 +1,278 @@
+// Copyright 2026 Hanzo AI, Inc. All rights reserved.
+
+package mfa_test
+
+// TOTP MFA tests driven through the REAL mounted router (routes.Route installs
+// the Guard, then mfa.Route after it). Every case is a wire request the account
+// security page sends. The assertions pin the enrollment contract (initiate mints
+// a secret the client can turn into a valid passcode; enable persists it) and the
+// security one: enrollment is self-service on your OWN record, and a regular user
+// can NEVER touch another user's MFA — that needs admin authority.
+
+import (
+	"context"
+	"crypto/rand"
+	"crypto/rsa"
+	"crypto/x509"
+	"encoding/json"
+	"encoding/pem"
+	"io"
+	"net/http/httptest"
+	"path/filepath"
+	"strings"
+	"testing"
+	"time"
+
+	"github.com/golang-jwt/jwt/v5"
+	"github.com/pquerna/otp/totp"
+
+	"github.com/hanzoai/orm"
+	ormdb "github.com/hanzoai/orm/db"
+	"github.com/zap-proto/zip"
+
+	"github.com/hanzoai/iam/internal/routes"
+	"github.com/hanzoai/iam/internal/schema"
+	"github.com/hanzoai/iam/internal/store"
+)
+
+const signingKid = "cert-hanzo"
+
+type harness struct {
+	app *zip.App
+	key *rsa.PrivateKey
+	db  orm.DB
+}
+
+func newHarness(t *testing.T) *harness {
+	t.Helper()
+	_ = schema.Kinds()
+	key, err := rsa.GenerateKey(rand.Reader, 2048)
+	if err != nil {
+		t.Fatalf("rsa: %v", err)
+	}
+	dir := t.TempDir()
+	db, err := orm.OpenSQLite(&ormdb.SQLiteDBConfig{
+		Path:   filepath.Join(dir, "mfa.db"),
+		Config: ormdb.SQLiteConfig{BusyTimeout: 5000, JournalMode: "WAL"},
+	})
+	if err != nil {
+		t.Fatalf("open sqlite: %v", err)
+	}
+	t.Cleanup(func() { _ = db.Close() })
+
+	seedCert(t, db, "admin", signingKid, pemOf(t, key))
+	seedUser(t, db, "admin", "root", true)   // SuperAdmin (org == admin)
+	seedUser(t, db, "hanzo", "boss", true)   // org-admin of hanzo
+	seedUser(t, db, "hanzo", "alice", false) // regular user in hanzo
+
+	app := zip.New(zip.Config{AppName: "mfa-test", DisableStartupMessage: true})
+	routes.Route(app, db)
+	app.Prepare()
+	return &harness{app: app, key: key, db: db}
+}
+
+func (h *harness) token(t *testing.T, sub string) string {
+	t.Helper()
+	tok := jwt.NewWithClaims(jwt.SigningMethodRS256, jwt.MapClaims{
+		"sub": sub,
+		"iat": time.Now().Add(-time.Minute).Unix(),
+		"exp": time.Now().Add(time.Hour).Unix(),
+	})
+	tok.Header["kid"] = signingKid
+	s, err := tok.SignedString(h.key)
+	if err != nil {
+		t.Fatalf("sign: %v", err)
+	}
+	return s
+}
+
+func (h *harness) do(t *testing.T, path, bearer, body string) (int, map[string]any) {
+	t.Helper()
+	var r io.Reader
+	if body != "" {
+		r = strings.NewReader(body)
+	}
+	req := httptest.NewRequest("POST", path, r)
+	req.Host = "hanzo.id"
+	req.Header.Set("Content-Type", "application/json")
+	if bearer != "" {
+		req.Header.Set("Authorization", "Bearer "+bearer)
+	}
+	resp, err := h.app.Fiber().Test(req)
+	if err != nil {
+		t.Fatalf("POST %s: %v", path, err)
+	}
+	b, _ := io.ReadAll(resp.Body)
+	_ = resp.Body.Close()
+	var m map[string]any
+	_ = json.Unmarshal(b, &m)
+	return resp.StatusCode, m
+}
+
+// dataString reads m.data.<key> as a string.
+func dataString(m map[string]any, key string) string {
+	d, _ := m["data"].(map[string]any)
+	s, _ := d[key].(string)
+	return s
+}
+
+// TestMFA_enrollLifecycle: a regular user enrolls TOTP on her own account —
+// initiate mints a secret she can turn into a valid passcode, verify accepts it,
+// enable persists it, disable clears it.
+func TestMFA_enrollLifecycle(t *testing.T) {
+	h := newHarness(t)
+	alice := h.token(t, "hanzo/alice")
+
+	// initiate — a secret, an otpauth URL, and a recovery code.
+	st, m := h.do(t, "/v1/iam/mfa/setup/initiate", alice, `{}`)
+	if st != 200 || m["status"] != "ok" {
+		t.Fatalf("initiate: status=%d body=%v", st, m)
+	}
+	secret := dataString(m, "secret")
+	if secret == "" {
+		t.Fatalf("initiate returned no secret: %v", m)
+	}
+	if url := dataString(m, "url"); !strings.HasPrefix(url, "otpauth://totp/") {
+		t.Fatalf("initiate url is not an otpauth URI: %q", url)
+	}
+	d, _ := m["data"].(map[string]any)
+	codes, _ := d["recoveryCodes"].([]any)
+	if len(codes) == 0 || codes[0].(string) == "" {
+		t.Fatalf("initiate returned no recovery code: %v", d)
+	}
+	recovery := codes[0].(string)
+
+	// verify — a code derived from the secret is accepted.
+	code, err := totp.GenerateCode(secret, time.Now())
+	if err != nil {
+		t.Fatalf("totp code: %v", err)
+	}
+	if st, m := h.do(t, "/v1/iam/mfa/setup/verify", alice,
+		`{"secret":"`+secret+`","passcode":"`+code+`"}`); st != 200 || m["status"] != "ok" {
+		t.Fatalf("verify valid code: status=%d body=%v", st, m)
+	}
+
+	// enable — the secret + recovery code land on alice's row; TOTP is preferred.
+	if st, m := h.do(t, "/v1/iam/mfa/setup/enable", alice,
+		`{"secret":"`+secret+`","recoveryCodes":["`+recovery+`"]}`); st != 200 || m["status"] != "ok" {
+		t.Fatalf("enable: status=%d body=%v", st, m)
+	}
+	u, _ := store.GetUserByName(context.Background(), h.db, "hanzo", "alice")
+	if u == nil || u.TotpSecret != secret {
+		t.Fatalf("enable did not persist TotpSecret: %+v", u)
+	}
+	if u.PreferredMfaType != "app" {
+		t.Fatalf("preferredMfaType = %q, want app", u.PreferredMfaType)
+	}
+	if len(u.RecoveryCodes) == 0 {
+		t.Fatalf("enable did not persist recovery codes")
+	}
+
+	// disable — every TOTP field is cleared.
+	if st, m := h.do(t, "/v1/iam/delete-mfa", alice, `{}`); st != 200 || m["status"] != "ok" {
+		t.Fatalf("disable: status=%d body=%v", st, m)
+	}
+	u, _ = store.GetUserByName(context.Background(), h.db, "hanzo", "alice")
+	if u.TotpSecret != "" || u.PreferredMfaType != "" || len(u.RecoveryCodes) != 0 {
+		t.Fatalf("disable did not clear MFA fields: %+v", u)
+	}
+}
+
+// TestMFA_verifyRejectsBadCode: an incorrect passcode is refused (status:error at
+// 200 — the casibase convention the console branches on).
+func TestMFA_verifyRejectsBadCode(t *testing.T) {
+	h := newHarness(t)
+	alice := h.token(t, "hanzo/alice")
+	_, m := h.do(t, "/v1/iam/mfa/setup/initiate", alice, `{}`)
+	secret := dataString(m, "secret")
+
+	st, body := h.do(t, "/v1/iam/mfa/setup/verify", alice,
+		`{"secret":"`+secret+`","passcode":"000000"}`)
+	if st != 200 || body["status"] != "error" {
+		t.Fatalf("bad code should be rejected: status=%d body=%v", st, body)
+	}
+}
+
+// TestMFA_crossUserRequiresAdmin: a regular user cannot enroll/disable MFA on
+// ANOTHER user — the general user-write policy refuses it (403). An org-admin and
+// a super over that user CAN.
+func TestMFA_crossUserRequiresAdmin(t *testing.T) {
+	h := newHarness(t)
+	alice := h.token(t, "hanzo/alice") // regular
+	boss := h.token(t, "hanzo/boss")   // org-admin of hanzo
+	super := h.token(t, "admin/root")  // SuperAdmin
+
+	// alice → boss's MFA: forbidden.
+	body := `{"owner":"hanzo","name":"boss"}`
+	if st, _ := h.do(t, "/v1/iam/mfa/setup/initiate", alice, body); st != 403 {
+		t.Fatalf("regular user initiating another user's MFA: status=%d, want 403", st)
+	}
+	if st, _ := h.do(t, "/v1/iam/delete-mfa", alice, body); st != 403 {
+		t.Fatalf("regular user disabling another user's MFA: status=%d, want 403", st)
+	}
+
+	// org-admin → a user in the SAME org: allowed.
+	if st, m := h.do(t, "/v1/iam/mfa/setup/initiate", boss,
+		`{"owner":"hanzo","name":"alice"}`); st != 200 || m["status"] != "ok" {
+		t.Fatalf("org-admin initiating a same-org user's MFA: status=%d body=%v", st, m)
+	}
+	// super → anyone: allowed.
+	if st, m := h.do(t, "/v1/iam/mfa/setup/initiate", super,
+		`{"owner":"hanzo","name":"alice"}`); st != 200 || m["status"] != "ok" {
+		t.Fatalf("super initiating a user's MFA: status=%d body=%v", st, m)
+	}
+}
+
+// TestMFA_setPreferred: a user selects a preferred factor on her own account.
+func TestMFA_setPreferred(t *testing.T) {
+	h := newHarness(t)
+	alice := h.token(t, "hanzo/alice")
+	if st, m := h.do(t, "/v1/iam/set-preferred-mfa", alice, `{"mfaType":"app"}`); st != 200 || m["status"] != "ok" {
+		t.Fatalf("set-preferred-mfa: status=%d body=%v", st, m)
+	}
+	u, _ := store.GetUserByName(context.Background(), h.db, "hanzo", "alice")
+	if u.PreferredMfaType != "app" {
+		t.Fatalf("preferredMfaType = %q, want app", u.PreferredMfaType)
+	}
+}
+
+// TestMFA_requiresBearer: no token → the Guard refuses before the handler.
+func TestMFA_requiresBearer(t *testing.T) {
+	h := newHarness(t)
+	if st, _ := h.do(t, "/v1/iam/mfa/setup/initiate", "", `{}`); st != 401 {
+		t.Fatalf("no-bearer initiate: status=%d, want 401", st)
+	}
+}
+
+// ---- seed helpers (mirror the SCIM harness) ----
+
+func seedCert(t *testing.T, db orm.DB, owner, name, privPEM string) {
+	t.Helper()
+	c := orm.New[schema.Cert](db)
+	c.Owner, c.Name = owner, name
+	c.PrivateKey = privPEM
+	c.SetId(owner + "/" + name)
+	if err := c.CreateCtx(context.Background()); err != nil {
+		t.Fatalf("seed cert: %v", err)
+	}
+}
+
+func seedUser(t *testing.T, db orm.DB, owner, name string, admin bool) {
+	t.Helper()
+	u := orm.New[schema.User](db)
+	u.Owner, u.Name = owner, name
+	u.IsAdmin = admin
+	u.PasswordHash = "$argon2id$SENTINEL"
+	u.PasswordType = "argon2id"
+	u.SetId(owner + "/" + name)
+	if err := u.CreateCtx(context.Background()); err != nil {
+		t.Fatalf("seed user: %v", err)
+	}
+}
+
+func pemOf(t *testing.T, k *rsa.PrivateKey) string {
+	t.Helper()
+	return string(pem.EncodeToMemory(&pem.Block{
+		Type: "RSA PRIVATE KEY", Bytes: x509.MarshalPKCS1PrivateKey(k),
+	}))
+}

internal/oidc/authorize.go

@@ -0,0 +1,185 @@
+// Copyright 2026 Hanzo AI, Inc. All rights reserved.
+
+package oidc
+
+import (
+	"net/url"
+	"strings"
+
+	"github.com/hanzoai/orm"
+	"github.com/zap-proto/zip"
+
+	"github.com/hanzoai/iam/internal/schema"
+	"github.com/hanzoai/iam/internal/store"
+)
+
+// The authorization endpoint: GET/POST /v1/iam/oauth/authorize — the front door
+// of the authorization-code flow. iam2 validates the request BEFORE it trusts
+// any redirect: an unknown client_id or an unregistered redirect_uri is answered
+// in place and NEVER redirected to (RFC 6749 §4.1.2.1), closing the open-redirect
+// and code-injection surface that a bare pass-through would leave open. A
+// well-formed request is delegated to the hosted login UI (matching v1), which
+// collects credentials and posts to /v1/iam/login; that endpoint mints the
+// PKCE-bound code and the browser lands back on the registered redirect_uri.
+
+// hostedLoginPath is the default hosted-login route the authorize endpoint hands
+// a validated request to when the application pins no SigninUrl of its own.
+const hostedLoginPath = "/login/oauth/authorize"
+
+// authorizeRequest is the parsed authorize query.
+type authorizeRequest struct {
+	responseType        string
+	clientID            string
+	redirectURI         string
+	scope               string
+	state               string
+	nonce               string
+	codeChallenge       string
+	codeChallengeMethod string
+	resource            string
+	responseMode        string
+	provider            string
+}
+
+func authorizeHandler(db orm.DB) zip.Handler {
+	return func(c *zip.Ctx) error {
+		ctx := c.Context()
+		q := authorizeParams(c)
+
+		// 1. Resolve the client. Without a known client there is no trusted
+		// redirect target, so the error is shown in place — never redirected.
+		if q.clientID == "" {
+			return authorizeUserError(c, "client_id is required")
+		}
+		app, err := store.GetApplicationByClientId(ctx, db, q.clientID)
+		if err != nil {
+			return authorizeUserError(c, "internal error")
+		}
+		if app == nil {
+			return authorizeUserError(c, "unknown client_id")
+		}
+		// 2. redirect_uri must EXACTLY match a registered URI before it can ever
+		// be used as a redirect target. A mismatch is answered in place.
+		if q.redirectURI == "" || !app.IsRedirectUriValid(q.redirectURI) {
+			return authorizeUserError(c, "invalid redirect_uri")
+		}
+
+		// The redirect target is now trusted: protocol errors redirect back to it
+		// with error+state (RFC 6749 §4.1.2.1).
+		if q.responseType != "code" {
+			return authorizeErrorRedirect(c, q, "unsupported_response_type", "only response_type=code is supported")
+		}
+		method := normalizeChallengeMethod(q.codeChallenge, q.codeChallengeMethod)
+		if q.codeChallenge != "" && method != "S256" {
+			return authorizeErrorRedirect(c, q, "invalid_request", "only S256 PKCE is supported")
+		}
+		if app.ClientSecret == "" && q.codeChallenge == "" {
+			return authorizeErrorRedirect(c, q, "invalid_request", "PKCE is required for public clients")
+		}
+
+		// A request that names a social `provider` is federated to that external
+		// IdP (Google/GitHub, …) instead of the hosted credential login. The
+		// client + redirect_uri + PKCE policy above are already enforced, so the
+		// federation broker starts from a validated request and a trusted target.
+		if q.provider != "" {
+			return beginFederation(c, db, app, q, method)
+		}
+
+		// Delegate to the hosted login with a clean, re-encoded request. The login
+		// page posts credentials to /v1/iam/login, which mints the code.
+		return c.Redirect(302, hostedLoginTarget(app)+"?"+authorizeForwardQuery(q, method))
+	}
+}
+
+// authorizeParams reads the authorize parameters from the query (GET) or form
+// body (POST).
+func authorizeParams(c *zip.Ctx) authorizeRequest {
+	return authorizeRequest{
+		responseType:        param(c, "response_type"),
+		clientID:            param(c, "client_id"),
+		redirectURI:         param(c, "redirect_uri"),
+		scope:               param(c, "scope"),
+		state:               param(c, "state"),
+		nonce:               param(c, "nonce"),
+		codeChallenge:       param(c, "code_challenge"),
+		codeChallengeMethod: param(c, "code_challenge_method"),
+		resource:            param(c, "resource"),
+		responseMode:        param(c, "response_mode"),
+		provider:            param(c, "provider"),
+	}
+}
+
+// hostedLoginTarget is the login URL a validated request is delegated to — the
+// application's own SigninUrl when set, else the default hosted-login route.
+func hostedLoginTarget(app *schema.Application) string {
+	if app.SigninUrl != "" {
+		return app.SigninUrl
+	}
+	return hostedLoginPath
+}
+
+// authorizeForwardQuery re-encodes the validated request as a clean query string
+// for the hosted login — reconstructed from known parameters so nothing
+// unexpected is passed through.
+func authorizeForwardQuery(q authorizeRequest, method string) string {
+	v := url.Values{}
+	v.Set("response_type", "code")
+	v.Set("client_id", q.clientID)
+	v.Set("redirect_uri", q.redirectURI)
+	setIfPresent(v, "scope", q.scope)
+	setIfPresent(v, "state", q.state)
+	setIfPresent(v, "nonce", q.nonce)
+	if q.codeChallenge != "" {
+		v.Set("code_challenge", q.codeChallenge)
+		v.Set("code_challenge_method", method)
+	}
+	setIfPresent(v, "resource", q.resource)
+	setIfPresent(v, "response_mode", q.responseMode)
+	return v.Encode()
+}
+
+// authorizeErrorRedirect bounces a protocol error back to the (already
+// validated) redirect_uri with error+state, in the requested response mode.
+func authorizeErrorRedirect(c *zip.Ctx, q authorizeRequest, code, desc string) error {
+	v := url.Values{}
+	v.Set("error", code)
+	setIfPresent(v, "error_description", desc)
+	setIfPresent(v, "state", q.state)
+
+	sep := "?"
+	switch {
+	case q.responseMode == "fragment":
+		sep = "#"
+	case strings.Contains(q.redirectURI, "?"):
+		sep = "&"
+	}
+	return c.Redirect(302, q.redirectURI+sep+v.Encode())
+}
+
+// authorizeUserError answers a request whose client_id/redirect_uri could not be
+// validated: the resource owner is informed in place and the request is NOT
+// redirected anywhere (RFC 6749 §4.1.2.1). The message is server-controlled.
+func authorizeUserError(c *zip.Ctx, msg string) error {
+	c.SetHeader("Content-Type", "text/plain; charset=utf-8")
+	return c.String(400, "authorization error: "+msg)
+}
+
+// normalizeChallengeMethod maps an omitted PKCE method to S256 when a challenge
+// is present (S256 is the only method iam2 supports); an explicit non-S256
+// method is returned unchanged so the caller rejects the downgrade.
+func normalizeChallengeMethod(challenge, method string) string {
+	if challenge == "" {
+		return method
+	}
+	if method == "" || strings.EqualFold(method, "null") {
+		return "S256"
+	}
+	return method
+}
+
+// setIfPresent sets a query value only when non-empty.
+func setIfPresent(v url.Values, key, value string) {
+	if value != "" {
+		v.Set(key, value)
+	}
+}

internal/oidc/authorize_test.go

@@ -0,0 +1,142 @@
+// Copyright 2026 Hanzo AI, Inc. All rights reserved.
+
+package oidc
+
+import (
+	"net/http"
+	"net/url"
+	"strings"
+	"testing"
+)
+
+const testRedirect = "https://app.example/callback"
+
+func authorizeURL(q url.Values) string {
+	return PathAuthorize + "?" + q.Encode()
+}
+
+// The authorize endpoint validates the client and redirect_uri BEFORE it will
+// redirect anywhere: an unknown client or an unregistered redirect_uri is
+// answered in place (never bounced), closing the open-redirect surface.
+func TestAuthorize_RefusesToRedirectOnBadClientOrRedirect(t *testing.T) {
+	app, db := newServer(t)
+	seedApp(t, db, appOpts{clientID: "pub", redirectURIs: []string{testRedirect}})
+
+	cases := []struct {
+		name string
+		q    url.Values
+	}{
+		{"missing client_id", url.Values{"response_type": {"code"}, "redirect_uri": {testRedirect}}},
+		{"unknown client_id", url.Values{"response_type": {"code"}, "client_id": {"ghost"}, "redirect_uri": {testRedirect}}},
+		{"missing redirect_uri", url.Values{"response_type": {"code"}, "client_id": {"pub"}}},
+		{"unregistered redirect_uri", url.Values{"response_type": {"code"}, "client_id": {"pub"}, "redirect_uri": {"https://evil.example/steal"}}},
+		{"redirect near-match", url.Values{"response_type": {"code"}, "client_id": {"pub"}, "redirect_uri": {testRedirect + "/.."}}},
+	}
+	for _, tc := range cases {
+		t.Run(tc.name, func(t *testing.T) {
+			resp, _ := do(t, app, formReqNoBody("GET", authorizeURL(tc.q)))
+			if resp.StatusCode != 400 {
+				t.Fatalf("status = %d, want 400", resp.StatusCode)
+			}
+			if loc := resp.Header.Get("Location"); loc != "" {
+				t.Fatalf("must NOT redirect on bad client/redirect; got Location %q", loc)
+			}
+		})
+	}
+}
+
+// Once the client + redirect_uri are validated, a protocol error bounces back to
+// the (trusted) redirect_uri with error + state.
+func TestAuthorize_ProtocolErrorRedirectsToClient(t *testing.T) {
+	app, db := newServer(t)
+	seedApp(t, db, appOpts{clientID: "pub", redirectURIs: []string{testRedirect}})
+
+	t.Run("unsupported response_type", func(t *testing.T) {
+		q := url.Values{"response_type": {"token"}, "client_id": {"pub"}, "redirect_uri": {testRedirect}, "state": {"xyz"}, "code_challenge": {"abc"}}
+		resp, _ := do(t, app, formReqNoBody("GET", authorizeURL(q)))
+		loc := requireRedirect(t, resp, testRedirect)
+		if !strings.Contains(loc, "error=unsupported_response_type") || !strings.Contains(loc, "state=xyz") {
+			t.Fatalf("Location = %q", loc)
+		}
+	})
+
+	t.Run("public client without PKCE", func(t *testing.T) {
+		q := url.Values{"response_type": {"code"}, "client_id": {"pub"}, "redirect_uri": {testRedirect}, "state": {"s1"}}
+		resp, _ := do(t, app, formReqNoBody("GET", authorizeURL(q)))
+		loc := requireRedirect(t, resp, testRedirect)
+		if !strings.Contains(loc, "error=invalid_request") {
+			t.Fatalf("public client without PKCE should error; Location = %q", loc)
+		}
+	})
+
+	t.Run("plain PKCE rejected", func(t *testing.T) {
+		q := url.Values{"response_type": {"code"}, "client_id": {"pub"}, "redirect_uri": {testRedirect}, "code_challenge": {"abc"}, "code_challenge_method": {"plain"}}
+		resp, _ := do(t, app, formReqNoBody("GET", authorizeURL(q)))
+		loc := requireRedirect(t, resp, testRedirect)
+		if !strings.Contains(loc, "error=invalid_request") {
+			t.Fatalf("plain PKCE should be rejected; Location = %q", loc)
+		}
+	})
+}
+
+// A well-formed request is delegated to the hosted login with the (re-encoded)
+// request preserved.
+func TestAuthorize_DelegatesValidRequest(t *testing.T) {
+	app, db := newServer(t)
+	seedApp(t, db, appOpts{clientID: "pub", redirectURIs: []string{testRedirect}})
+
+	challenge := ComputeS256Challenge("verifier-abcdefghijklmnopqrstuvwxyz-012345")
+	q := url.Values{
+		"response_type":  {"code"},
+		"client_id":      {"pub"},
+		"redirect_uri":   {testRedirect},
+		"scope":          {"openid profile"},
+		"state":          {"state-1"},
+		"nonce":          {"nonce-1"},
+		"code_challenge": {challenge},
+	}
+	resp, _ := do(t, app, formReqNoBody("GET", authorizeURL(q)))
+	if resp.StatusCode != 302 {
+		t.Fatalf("status = %d, want 302", resp.StatusCode)
+	}
+	loc := resp.Header.Get("Location")
+	if !strings.HasPrefix(loc, hostedLoginPath+"?") {
+		t.Fatalf("Location = %q, want hosted-login delegate", loc)
+	}
+	forwarded, err := url.Parse(loc)
+	if err != nil {
+		t.Fatal(err)
+	}
+	fq := forwarded.Query()
+	if fq.Get("client_id") != "pub" || fq.Get("redirect_uri") != testRedirect ||
+		fq.Get("code_challenge") != challenge || fq.Get("code_challenge_method") != "S256" ||
+		fq.Get("state") != "state-1" || fq.Get("nonce") != "nonce-1" {
+		t.Fatalf("delegated query missing/incorrect: %v", fq)
+	}
+}
+
+// A confidential client may authorize without PKCE (it authenticates with its
+// secret at the token endpoint).
+func TestAuthorize_ConfidentialWithoutPKCEDelegates(t *testing.T) {
+	app, db := newServer(t)
+	seedApp(t, db, appOpts{clientID: "conf", secret: "s3cret", redirectURIs: []string{testRedirect}})
+
+	q := url.Values{"response_type": {"code"}, "client_id": {"conf"}, "redirect_uri": {testRedirect}, "scope": {"openid"}}
+	resp, _ := do(t, app, formReqNoBody("GET", authorizeURL(q)))
+	if resp.StatusCode != 302 || !strings.HasPrefix(resp.Header.Get("Location"), hostedLoginPath+"?") {
+		t.Fatalf("confidential authorize: status=%d loc=%q", resp.StatusCode, resp.Header.Get("Location"))
+	}
+}
+
+// requireRedirect asserts a 302 whose Location targets wantPrefix and returns it.
+func requireRedirect(t *testing.T, resp *http.Response, wantPrefix string) string {
+	t.Helper()
+	if resp.StatusCode != 302 {
+		t.Fatalf("status = %d, want 302", resp.StatusCode)
+	}
+	loc := resp.Header.Get("Location")
+	if !strings.HasPrefix(loc, wantPrefix) {
+		t.Fatalf("Location = %q, want prefix %q", loc, wantPrefix)
+	}
+	return loc
+}

internal/oidc/certkey.go

@@ -0,0 +1,165 @@
+// Copyright 2026 Hanzo AI, Inc. All rights reserved.
+
+package oidc
+
+import (
+	"crypto"
+	"crypto/ecdsa"
+	"crypto/rsa"
+	"crypto/x509"
+	"encoding/base64"
+	"encoding/pem"
+	"errors"
+	"math/big"
+	"strings"
+
+	"github.com/luxfi/crypto/pq/mldsa/mldsa65"
+
+	"github.com/hanzoai/iam/internal/schema"
+)
+
+// certkey resolves the PUBLIC half of a signing Cert and encodes it as a JWK.
+// It is the one place cert → public-key happens, shared by the JWKS endpoint
+// (which publishes the key so relying parties can verify) and token
+// verification (which checks a bearer against it). The public key is read from
+// the Cert's published x509 certificate when present, else derived from the key
+// pair; private material never crosses this boundary.
+
+// certPublicKey returns a Cert's public key, its JOSE alg, and (for x509 certs)
+// the base64 DER chain for the JWK `x5c`. An ML-DSA cert yields a raw ML-DSA
+// public key and no chain.
+func certPublicKey(cert *schema.Cert) (pub crypto.PublicKey, alg string, x5c []string, err error) {
+	if cert == nil {
+		return nil, "", nil, errors.New("jwks: nil cert")
+	}
+	if isMLDSACert(cert) {
+		pk, err := mldsa65PublicFromCert(cert)
+		if err != nil {
+			return nil, "", nil, err
+		}
+		return pk, algMLDSA65, nil, nil
+	}
+	if cert.Certificate != "" {
+		block, _ := pem.Decode([]byte(cert.Certificate))
+		if block != nil {
+			x509Cert, err := x509.ParseCertificate(block.Bytes)
+			if err != nil {
+				return nil, "", nil, err
+			}
+			a, err := classicalAlg(x509Cert.PublicKey, cert.CryptoAlgorithm)
+			if err != nil {
+				return nil, "", nil, err
+			}
+			return x509Cert.PublicKey, a, []string{base64.StdEncoding.EncodeToString(x509Cert.Raw)}, nil
+		}
+	}
+	// Dev/test cert that stores only the private key: derive the public half.
+	signer, err := parsePrivateKeyPEM(cert.PrivateKey)
+	if err != nil {
+		return nil, "", nil, err
+	}
+	a, err := classicalAlg(signer.Public(), cert.CryptoAlgorithm)
+	if err != nil {
+		return nil, "", nil, err
+	}
+	return signer.Public(), a, nil, nil
+}
+
+// certToJWK encodes a Cert's public key as a JWK map: {kty, alg, use:"sig", kid,
+// key params, x5c?}. kid is the Cert name (what token headers carry), matching
+// the live hanzo.id JWKS.
+func certToJWK(cert *schema.Cert) (map[string]any, error) {
+	pub, alg, x5c, err := certPublicKey(cert)
+	if err != nil {
+		return nil, err
+	}
+	var jwk map[string]any
+	switch k := pub.(type) {
+	case *rsa.PublicKey:
+		jwk = rsaJWK(k)
+	case *ecdsa.PublicKey:
+		jwk, err = ecJWK(k)
+		if err != nil {
+			return nil, err
+		}
+	case *mldsa65.PublicKey:
+		jwk = map[string]any{"kty": "MLDSA", "x": base64.RawURLEncoding.EncodeToString(k.Bytes())}
+	default:
+		return nil, errors.New("jwks: unsupported public key type")
+	}
+	jwk["use"] = "sig"
+	jwk["kid"] = cert.Name
+	jwk["alg"] = alg
+	if len(x5c) > 0 {
+		jwk["x5c"] = x5c
+	}
+	return jwk, nil
+}
+
+// rsaJWK encodes an RSA public key's modulus and exponent (RFC 7518 §6.3).
+func rsaJWK(k *rsa.PublicKey) map[string]any {
+	return map[string]any{
+		"kty": "RSA",
+		"n":   base64.RawURLEncoding.EncodeToString(k.N.Bytes()),
+		"e":   base64.RawURLEncoding.EncodeToString(big.NewInt(int64(k.E)).Bytes()),
+	}
+}
+
+// ecJWK encodes an EC public key's curve and fixed-width coordinates (RFC 7518
+// §6.2) and returns the curve's JOSE alg.
+func ecJWK(k *ecdsa.PublicKey) (map[string]any, error) {
+	var crv string
+	var size int
+	switch k.Curve.Params().BitSize {
+	case 256:
+		crv, size = "P-256", 32
+	case 384:
+		crv, size = "P-384", 48
+	case 521:
+		crv, size = "P-521", 66
+	default:
+		return nil, errors.New("jwks: unsupported EC curve")
+	}
+	return map[string]any{
+		"kty": "EC",
+		"crv": crv,
+		"x":   base64.RawURLEncoding.EncodeToString(leftPad(k.X.Bytes(), size)),
+		"y":   base64.RawURLEncoding.EncodeToString(leftPad(k.Y.Bytes(), size)),
+	}, nil
+}
+
+// classicalAlg maps a classical public key (and the Cert's declared algorithm,
+// when it agrees with the key family) to a JOSE alg. The key type is
+// authoritative; the declared value only refines RSA (RS256 default, RS512 when
+// pinned).
+func classicalAlg(pub crypto.PublicKey, declared string) (string, error) {
+	switch k := pub.(type) {
+	case *rsa.PublicKey:
+		if strings.EqualFold(declared, "RS512") {
+			return "RS512", nil
+		}
+		return "RS256", nil
+	case *ecdsa.PublicKey:
+		switch k.Curve.Params().BitSize {
+		case 256:
+			return "ES256", nil
+		case 384:
+			return "ES384", nil
+		case 521:
+			return "ES512", nil
+		}
+		return "", errors.New("jwks: unsupported EC curve")
+	default:
+		return "", errors.New("jwks: unsupported public key type")
+	}
+}
+
+// leftPad left-zero-pads b to size bytes (EC coordinates are fixed-width).
+func leftPad(b []byte, size int) []byte {
+	if len(b) >= size {
+		return b
+	}
+	out := make([]byte, size)
+	copy(out[size-len(b):], b)
+	return out
+}

internal/oidc/challenge.go

@@ -0,0 +1,146 @@
+// Copyright 2026 Hanzo AI, Inc. All rights reserved.
+
+package oidc
+
+import (
+	"context"
+	"errors"
+	"time"
+
+	"github.com/hanzoai/orm"
+	fiber "github.com/zap-proto/fiber/v3"
+	"github.com/zap-proto/zip"
+
+	"github.com/hanzoai/iam/internal/schema"
+)
+
+// The login-challenge lifecycle: the ONE primitive for a sign-in that has proven
+// one thing and must prove another before a token exists. The MFA gate mints one
+// when a password verifies but the second factor is outstanding; the matching
+// finish takes it.
+//
+// v1 keeps this in a beego cookie session; v2 has no key/value session store, so
+// the state is a server-side row (schema.LoginChallenge) and the client holds only
+// its opaque id. It is a SIBLING of Token, never a Token with borrowed fields:
+// /token resolves a grant by Code, so a challenge filed there would sit on the
+// redemption path wearing a fictional Application.
+
+// challengeTTL bounds a half-finished ceremony. Five minutes is the authorization
+// code's own bound — long enough to read a code off a phone, short enough that an
+// abandoned challenge is not a standing key to an account whose password is
+// already known.
+const challengeTTL = 5 * time.Minute
+
+// The challenge kinds. Each names the proof still outstanding, and a taker demands
+// its own kind: a challenge minted for one purpose must never satisfy another.
+const (
+	KindMfa        = "mfa"
+	KindFederation = "federation"
+)
+
+// ErrChallenge is the ONE opaque failure for every way a challenge can be refused
+// — unknown, expired, spent, or the wrong kind. They collapse to one answer so a
+// prober cannot tell a spent challenge from a forged one.
+var ErrChallenge = errors.New("the multi-factor session has expired")
+
+// challengeOwner files every challenge under the reserved admin org. A challenge
+// is the authorization server's own state, not a tenant record: it is never
+// listed, never served by an entity route, and its subject is the only tenancy
+// that matters (and rides inside it, verified).
+const challengeOwner = "admin"
+
+// MintChallenge persists a fresh challenge for subject ("owner/name") and returns
+// its opaque id. payload is the kind's own state — the just-used verification type
+// for the MFA gate. now is injected for testability.
+func MintChallenge(ctx context.Context, db orm.DB, kind, subject, payload string, now time.Time) (string, error) {
+	id, err := newOpaqueToken()
+	if err != nil {
+		return "", err
+	}
+	c := orm.New[schema.LoginChallenge](db)
+	c.Owner = challengeOwner
+	c.Name = id
+	c.CreatedTime = now.UTC().Format(time.RFC3339)
+	c.Kind = kind
+	c.Subject = subject
+	c.Payload = payload
+	c.ExpireIn = now.Add(challengeTTL).Unix()
+	c.SetId(challengeOwner + "/" + id)
+	if err := c.CreateCtx(ctx); err != nil {
+		return "", err
+	}
+	return id, nil
+}
+
+// TakeChallenge resolves and SPENDS a challenge of the given kind, returning it.
+// Taking is the only read: a challenge that is found is immediately marked used,
+// so a replay of the same id loses whether it races or follows. The caller gets
+// the subject from the returned row and nowhere else — never from a request
+// parameter, so a body naming another user cannot redirect the ceremony.
+//
+// Every refusal is ErrChallenge.
+func TakeChallenge(ctx context.Context, db orm.DB, id, kind string, now time.Time) (*schema.LoginChallenge, error) {
+	if id == "" {
+		return nil, ErrChallenge
+	}
+	c, err := orm.Get[schema.LoginChallenge](db, challengeOwner+"/"+id)
+	if err != nil || c == nil {
+		return nil, ErrChallenge
+	}
+	if c.Used || c.Kind != kind || now.Unix() > c.ExpireIn {
+		return nil, ErrChallenge
+	}
+	c.Used = true
+	if err := c.UpdateCtx(ctx); err != nil {
+		return nil, ErrChallenge
+	}
+	return c, nil
+}
+
+// challengeCookie carries the challenge id to the client exactly the way v1 carries
+// its beego session: a host-only, HttpOnly cookie the browser returns on the
+// finishing request. Script cannot read it; it is bound to the ceremony's own
+// short life.
+const challengeCookie = "hanzo_challenge"
+
+// SetChallenge writes the challenge id for the finishing request to return.
+// HttpOnly keeps script out of it; SameSite=Lax lets the portal's own POST carry
+// it while refusing a cross-site one; the MaxAge matches the row's TTL so the
+// browser forgets it exactly when the server does.
+func SetChallenge(c *zip.Ctx, id string) {
+	c.Fiber().Cookie(&fiber.Cookie{
+		Name:     challengeCookie,
+		Value:    id,
+		Path:     "/",
+		MaxAge:   int(challengeTTL / time.Second),
+		HTTPOnly: true,
+		Secure:   true,
+		SameSite: fiber.CookieSameSiteLaxMode,
+	})
+}
+
+// ClearChallenge expires the cookie once its challenge is spent, so a finished
+// ceremony leaves nothing behind to replay.
+func ClearChallenge(c *zip.Ctx) {
+	c.Fiber().Cookie(&fiber.Cookie{
+		Name:     challengeCookie,
+		Value:    "",
+		Path:     "/",
+		MaxAge:   -1,
+		HTTPOnly: true,
+		Secure:   true,
+		SameSite: fiber.CookieSameSiteLaxMode,
+	})
+}
+
+// ReadChallenge returns the challenge id a finishing request presents: the body
+// field when one is given (an SDK holding no cookie jar), else the cookie the
+// browser returned. ONE function, ONE precedence — the id is the bearer of the
+// ceremony either way, and the row it names is single-use, short-lived, and
+// carries its own subject, so neither source can widen what it proves.
+func ReadChallenge(c *zip.Ctx, fromBody string) string {
+	if fromBody != "" {
+		return fromBody
+	}
+	return c.Fiber().Cookies(challengeCookie)
+}

internal/oidc/code.go

@@ -0,0 +1,120 @@
+// Copyright 2026 Hanzo AI, Inc. All rights reserved.
+
+package oidc
+
+import (
+	"crypto/rand"
+	"crypto/subtle"
+	"encoding/base64"
+	"errors"
+	"time"
+
+	"github.com/hanzoai/iam/internal/schema"
+)
+
+// Authorization-code lifecycle over the Token entity. A code is a short-lived,
+// single-use bearer of the right to mint tokens for one (app, user); PKCE binds
+// it to the client instance that started the flow, and the single-use + expiry
+// guards close replay.
+
+// codeTTL bounds how long an authorization code is redeemable (RFC 6749 §4.1.2
+// recommends ≤ 10 min; we use 5).
+const codeTTL = 5 * time.Minute
+
+var (
+	// ErrCodeUnknown — no token row carries this code.
+	ErrCodeUnknown = errors.New("oauth: authorization code not found")
+	// ErrCodeUsed — the code was already redeemed (replay). Per RFC 6749 §4.1.2
+	// a reused code SHOULD also revoke previously-issued tokens; the caller does
+	// that when it detects this error.
+	ErrCodeUsed = errors.New("oauth: authorization code already used")
+	// ErrCodeExpired — the code is past its TTL.
+	ErrCodeExpired = errors.New("oauth: authorization code expired")
+	// ErrClientMismatch — the redeeming client_id is not the one the code was
+	// minted for.
+	ErrClientMismatch = errors.New("oauth: client_id does not match the authorization code")
+)
+
+// newOpaqueToken returns a 256-bit URL-safe random token (code / access token).
+func newOpaqueToken() (string, error) {
+	b := make([]byte, 32)
+	if _, err := rand.Read(b); err != nil {
+		return "", err
+	}
+	return base64.RawURLEncoding.EncodeToString(b), nil
+}
+
+// MintCode builds (does not persist) a Token row representing a fresh
+// authorization code bound to (app, user), the PKCE challenge, scope, and
+// resource. The caller persists it via the store. now is injected for
+// testability.
+func MintCode(app *schema.Application, userID, scope, challenge, method, resource string, now time.Time) (*schema.Token, error) {
+	code, err := newOpaqueToken()
+	if err != nil {
+		return nil, err
+	}
+	// If a challenge is present, pin the method to S256 — never store "plain".
+	if challenge != "" && method != "S256" {
+		return nil, ErrPKCEPlainRejected
+	}
+	// The token row is keyed by the application's OWNER (its registry owner, e.g.
+	// "admin"), so (Owner, Application) is the application's natural key and the
+	// token endpoint resolves the app back unambiguously. Organization records the
+	// tenant the grant belongs to.
+	return &schema.Token{
+		Owner:               app.Owner,
+		Organization:        app.Organization,
+		Application:         app.Name,
+		User:                userID,
+		Code:                code,
+		Scope:               scope,
+		TokenType:           "Bearer",
+		CodeChallenge:       challenge,
+		CodeChallengeMethod: method,
+		CodeIsUsed:          false,
+		CodeExpireIn:        now.Add(codeTTL).Unix(),
+		Resource:            resource,
+	}, nil
+}
+
+// RedeemCode validates an authorization_code exchange against the stored token
+// row and returns nil iff the code may be used. It is the single guard the
+// token endpoint calls; on success the caller MUST immediately mark the row used
+// (MarkUsed) inside the same transaction so a concurrent replay loses.
+//
+// Checks, in order (each fail-closed):
+//  1. row exists (caller passes nil → ErrCodeUnknown)
+//  2. not already used (replay)
+//  3. not expired
+//  4. client_id matches (constant-time)
+//  5. PKCE: verifier derives the stored challenge (S256; plain refused; a public
+//     client that stored a challenge must present a verifier)
+func RedeemCode(tok *schema.Token, clientAppName, verifier string, now time.Time) error {
+	if tok == nil {
+		return ErrCodeUnknown
+	}
+	if tok.CodeIsUsed {
+		return ErrCodeUsed
+	}
+	if tok.CodeExpireIn != 0 && now.Unix() > tok.CodeExpireIn {
+		return ErrCodeExpired
+	}
+	if subtle.ConstantTimeCompare([]byte(tok.Application), []byte(clientAppName)) != 1 {
+		return ErrClientMismatch
+	}
+	return VerifyPKCE(verifier, tok.CodeChallenge, tok.CodeChallengeMethod)
+}
+
+// IssueAccessToken fills the row with a freshly-minted access token + expiry and
+// marks the code used — the atomic success step after RedeemCode. now injected
+// for tests. ttlSeconds is the access-token lifetime.
+func IssueAccessToken(tok *schema.Token, ttlSeconds int, now time.Time) error {
+	at, err := newOpaqueToken()
+	if err != nil {
+		return err
+	}
+	tok.AccessToken = at
+	tok.ExpiresIn = ttlSeconds
+	tok.CodeIsUsed = true // one-shot: any subsequent RedeemCode → ErrCodeUsed
+	return nil
+}

internal/oidc/code_test.go

@@ -0,0 +1,132 @@
+// Copyright 2026 Hanzo AI, Inc. All rights reserved.
+
+package oidc
+
+import (
+	"errors"
+	"testing"
+	"time"
+
+	"github.com/hanzoai/iam/internal/schema"
+)
+
+func testApp() *schema.Application {
+	a := &schema.Application{Organization: "hanzo"}
+	a.Name = "hanzo-console"
+	a.ClientId = "hanzo-console"
+	return a
+}
+
+func TestMintCode_BindsPKCEAndExpiry(t *testing.T) {
+	now := time.Unix(1_800_000_000, 0)
+	verifier := "verifier-abc-000000000000000000000000000000000"
+	ch := ComputeS256Challenge(verifier)
+	tok, err := MintCode(testApp(), "hanzo/alice", "openid profile", ch, "S256", "", now)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if tok.Code == "" || len(tok.Code) < 40 {
+		t.Fatalf("code not a 256-bit token: %q", tok.Code)
+	}
+	if tok.CodeIsUsed {
+		t.Fatal("fresh code must not be used")
+	}
+	if tok.CodeExpireIn != now.Add(codeTTL).Unix() {
+		t.Fatalf("expiry = %d, want %d", tok.CodeExpireIn, now.Add(codeTTL).Unix())
+	}
+	if tok.Application != "hanzo-console" || tok.User != "hanzo/alice" {
+		t.Fatalf("binding wrong: app=%q user=%q", tok.Application, tok.User)
+	}
+}
+
+func TestMintCode_RefusesPlain(t *testing.T) {
+	now := time.Unix(1_800_000_000, 0)
+	if _, err := MintCode(testApp(), "u", "", "some-challenge", "plain", "", now); !errors.Is(err, ErrPKCEPlainRejected) {
+		t.Fatalf("mint with plain: got %v, want ErrPKCEPlainRejected", err)
+	}
+}
+
+func TestRedeemCode_HappyPath(t *testing.T) {
+	now := time.Unix(1_800_000_000, 0)
+	verifier := "verifier-happy-0000000000000000000000000000000"
+	tok, _ := MintCode(testApp(), "hanzo/alice", "openid", ComputeS256Challenge(verifier), "S256", "", now)
+	if err := RedeemCode(tok, "hanzo-console", verifier, now.Add(30*time.Second)); err != nil {
+		t.Fatalf("valid redemption rejected: %v", err)
+	}
+}
+
+func TestRedeemCode_ReplayRejected(t *testing.T) {
+	now := time.Unix(1_800_000_000, 0)
+	verifier := "verifier-replay-000000000000000000000000000000"
+	tok, _ := MintCode(testApp(), "u", "openid", ComputeS256Challenge(verifier), "S256", "", now)
+	// First redemption + issue marks it used.
+	if err := RedeemCode(tok, "hanzo-console", verifier, now); err != nil {
+		t.Fatal(err)
+	}
+	if err := IssueAccessToken(tok, 3600, now); err != nil {
+		t.Fatal(err)
+	}
+	// Replay must now fail.
+	if err := RedeemCode(tok, "hanzo-console", verifier, now); !errors.Is(err, ErrCodeUsed) {
+		t.Fatalf("replay: got %v, want ErrCodeUsed", err)
+	}
+}
+
+func TestRedeemCode_ExpiredRejected(t *testing.T) {
+	now := time.Unix(1_800_000_000, 0)
+	verifier := "verifier-exp-00000000000000000000000000000000000"
+	tok, _ := MintCode(testApp(), "u", "openid", ComputeS256Challenge(verifier), "S256", "", now)
+	past := now.Add(codeTTL + time.Second)
+	if err := RedeemCode(tok, "hanzo-console", verifier, past); !errors.Is(err, ErrCodeExpired) {
+		t.Fatalf("expired code: got %v, want ErrCodeExpired", err)
+	}
+}
+
+func TestRedeemCode_ClientMismatchRejected(t *testing.T) {
+	now := time.Unix(1_800_000_000, 0)
+	verifier := "verifier-cli-00000000000000000000000000000000000"
+	tok, _ := MintCode(testApp(), "u", "openid", ComputeS256Challenge(verifier), "S256", "", now)
+	if err := RedeemCode(tok, "some-other-app", verifier, now); !errors.Is(err, ErrClientMismatch) {
+		t.Fatalf("client mismatch: got %v, want ErrClientMismatch", err)
+	}
+}
+
+func TestRedeemCode_WrongVerifierRejected(t *testing.T) {
+	now := time.Unix(1_800_000_000, 0)
+	tok, _ := MintCode(testApp(), "u", "openid", ComputeS256Challenge("the-right-verifier-0000000000000000000000000"), "S256", "", now)
+	if err := RedeemCode(tok, "hanzo-console", "the-WRONG-verifier-0000000000000000000000000", now); !errors.Is(err, ErrPKCEMismatch) {
+		t.Fatalf("wrong verifier: got %v, want ErrPKCEMismatch", err)
+	}
+}
+
+func TestRedeemCode_PublicClientMustPresentVerifier(t *testing.T) {
+	now := time.Unix(1_800_000_000, 0)
+	// Code minted WITH a challenge (public client) but token request omits the verifier.
+	tok, _ := MintCode(testApp(), "u", "openid", ComputeS256Challenge("v-000000000000000000000000000000000000000000000"), "S256", "", now)
+	if err := RedeemCode(tok, "hanzo-console", "", now); !errors.Is(err, ErrPKCEMissing) {
+		t.Fatalf("missing verifier: got %v, want ErrPKCEMissing", err)
+	}
+}
+
+func TestRedeemCode_UnknownCode(t *testing.T) {
+	if err := RedeemCode(nil, "hanzo-console", "v", time.Now()); !errors.Is(err, ErrCodeUnknown) {
+		t.Fatalf("nil token: got %v, want ErrCodeUnknown", err)
+	}
+}
+
+func TestIssueAccessToken_MintsAndMarksUsed(t *testing.T) {
+	now := time.Unix(1_800_000_000, 0)
+	tok, _ := MintCode(testApp(), "u", "openid", "", "", "", now)
+	if err := IssueAccessToken(tok, 3600, now); err != nil {
+		t.Fatal(err)
+	}
+	if tok.AccessToken == "" || len(tok.AccessToken) < 40 {
+		t.Fatalf("access token not minted: %q", tok.AccessToken)
+	}
+	if !tok.CodeIsUsed {
+		t.Fatal("code must be marked used after issue")
+	}
+	if tok.ExpiresIn != 3600 {
+		t.Fatalf("expiresIn = %d, want 3600", tok.ExpiresIn)
+	}
+}

internal/oidc/device.go

@@ -0,0 +1,371 @@
+// Copyright 2026 Hanzo AI, Inc. All rights reserved.
+
+package oidc
+
+import (
+	"context"
+	"crypto/rand"
+	"crypto/subtle"
+	"errors"
+	"time"
+
+	"github.com/hanzoai/orm"
+	"github.com/zap-proto/zip"
+
+	"github.com/hanzoai/iam/internal/httpx"
+	"github.com/hanzoai/iam/internal/schema"
+	"github.com/hanzoai/iam/internal/store"
+)
+
+// The RFC 8628 device authorization grant: how a machine with no browser and no
+// keyboard signs in (`hanzo login` on a GPU box, over ssh, in CI). Three legs,
+// each landing on an EXISTING seam rather than a parallel stack:
+//
+//  1. POST /v1/iam/oauth/device — the device asks for a device_code + a short
+//     user_code and shows the human a verification URI.
+//  2. POST /v1/iam/login {type:"device"} — the human, on any other machine,
+//     proves who they are and approves the user_code (login.go).
+//  3. POST /v1/iam/oauth/token grant_type=…:device_code — the device polls and
+//     mints through issueTokens, the same path every other grant mints through.
+//
+// A device authorization IS a pending authorization code, so it is a Token row
+// (Code=device_code, UserCode=user_code, User empty until approved) — not a
+// process-local map, which would die on restart and never work across replicas.
+//
+// Client authentication follows RFC 8628 §3.1 (request) and §3.4 (poll), which
+// both defer to RFC 6749 §3.2.1: a CONFIDENTIAL client (one with a registered
+// secret) authenticates at both legs exactly as it would at the token endpoint;
+// a PUBLIC device client (no secret — the usual CLI) is bound by its client_id
+// alone. The verification_uri page a human opens is public; the JSON legs here
+// are not a browser surface.
+
+// The device grant's vocabulary. deviceCodeTTL and devicePollInterval are each
+// read by the device request, the poll, and Discovery, so the lifetime a client
+// is told and the lifetime enforced can never drift.
+const (
+	// deviceGrant is the RFC 8628 grant_type identifier.
+	deviceGrant = "urn:ietf:params:oauth:grant-type:device_code"
+	// deviceCodeTTL bounds a device_code/user_code pair: long enough for a human
+	// to open the link on a phone, sign in, and approve. It is deliberately NOT
+	// codeTTL (5 min) — an authorization code is redeemed by software in seconds,
+	// a device code waits on a person.
+	deviceCodeTTL = 15 * time.Minute
+	// devicePollInterval is the minimum seconds between token-endpoint polls
+	// (RFC 8628 §3.5 `interval`).
+	devicePollInterval = 5
+)
+
+// user_code generation. The alphabet is RFC 8628 §6.1 "unambiguous": no I, L, O,
+// 0 or 1, because a human reads this off one screen and types it into another.
+// Its 32 symbols make the 5-bit mask below a UNIFORM draw — a modulo over a
+// non-power-of-two alphabet would bias the code and cost entropy — so 8
+// characters carry a full 40 bits. The live portal normalizes a typed code to
+// exactly this alphabet, uppercasing and stripping separators
+// (id pkgs/auth/src/client.ts normalizeUserCode), so the minted code is the
+// canonical form: uppercase, no dashes.
+const (
+	userCodeAlphabet = "ABCDEFGHJKLMNPQRSTUVWXYZ23456789"
+	userCodeLen      = 8
+	userCodeTries    = 5
+)
+
+// errUserCodeExhausted — every generated user_code collided with a live one.
+// Astronomically unlikely (40 bits against the handful of pending codes); it
+// fails closed rather than reusing a code.
+var errUserCodeExhausted = errors.New("device: could not generate a free user_code")
+
+// deviceResponse is the RFC 8628 §3.2 device authorization response. The field
+// names are load-bearing: both CLIs decode exactly this shape and hard-fail on
+// an empty device_code/user_code (cloud/cli/device.go, codex-rs
+// login/src/oidc_device_auth.rs).
+type deviceResponse struct {
+	DeviceCode              string `json:"device_code"`
+	UserCode                string `json:"user_code"`
+	VerificationUri         string `json:"verification_uri"`
+	VerificationUriComplete string `json:"verification_uri_complete"`
+	ExpiresIn               int    `json:"expires_in"`
+	Interval                int    `json:"interval"`
+}
+
+// routeDevice registers POST /v1/iam/oauth/device on the PUBLIC group r
+// (registered before the Guard, exactly like the token endpoint): the endpoint
+// authenticates the CLIENT inline — a confidential client by its secret, a
+// public device client by its client_id — so it needs no bearer and joins no
+// allow-list, membership in this group is what makes it reachable.
+func routeDevice(r zip.Router, db orm.DB) {
+	r.Post(PathDevice, deviceHandler(db))
+}
+
+// deviceHandler serves the device authorization request (RFC 8628 §3.1): it
+// mints the device_code/user_code pair and tells the device where to send its
+// human. A confidential client must authenticate its secret here (§3.1 → RFC
+// 6749 §3.2.1); a public device client presents only its client_id. The row it
+// creates grants nothing until a human approves it.
+func deviceHandler(db orm.DB) zip.Handler {
+	return func(c *zip.Ctx) error {
+		setTokenCacheHeaders(c)
+		ctx := c.Context()
+
+		clientID, clientSecret := clientAuth(c)
+		app, err := store.GetApplicationByClientId(ctx, db, clientID)
+		if err != nil {
+			return tokenError(c, 500, "server_error", "")
+		}
+		if app == nil {
+			return tokenError(c, 400, "invalid_client", "client_id is invalid")
+		}
+		// A confidential client (one with a registered secret) MUST authenticate
+		// (RFC 8628 §3.1 → RFC 6749 §3.2.1). A public device client has no secret
+		// and is identified by its client_id alone.
+		if app.ClientSecret != "" &&
+			subtle.ConstantTimeCompare([]byte(clientSecret), []byte(app.ClientSecret)) != 1 {
+			return tokenErrorClient(c, "client authentication failed")
+		}
+		if !appGrants(app, deviceGrant) {
+			return tokenError(c, 400, "unsupported_grant_type", "the application does not permit the device grant")
+		}
+
+		deviceCode, err := newOpaqueToken()
+		if err != nil {
+			return tokenError(c, 500, "server_error", "")
+		}
+		userCode, err := newUserCode(ctx, db)
+		if err != nil {
+			return tokenError(c, 500, "server_error", "")
+		}
+
+		// One row IS the pending authorization: Code is the device_code the
+		// machine polls with, UserCode the code its human transcribes, and an
+		// empty User means nobody has approved yet.
+		row := &schema.Token{
+			Owner:        app.Owner,
+			Application:  app.Name,
+			Organization: app.Organization,
+			Code:         deviceCode,
+			UserCode:     userCode,
+			Scope:        param(c, "scope"),
+			TokenType:    "Bearer",
+			CodeExpireIn: nowFunc().Add(deviceCodeTTL).Unix(),
+		}
+		row.Name = "dc-" + deviceCode[:24]
+		if err := store.PersistToken(ctx, db, row); err != nil {
+			return tokenError(c, 500, "server_error", "")
+		}
+
+		// Both URIs point at the SPA approval page a human opens, never at this
+		// JSON API. The complete form is a PATH segment because that is the route
+		// the page is mounted on (/login/oauth/device/:userCode).
+		verify := tokenIssuer(c) + PathDeviceVerify
+		return c.JSON(200, deviceResponse{
+			DeviceCode:              deviceCode,
+			UserCode:                userCode,
+			VerificationUri:         verify,
+			VerificationUriComplete: verify + "/" + userCode,
+			ExpiresIn:               int(deviceCodeTTL.Seconds()),
+			Interval:                devicePollInterval,
+		})
+	}
+}
+
+// deviceCodeGrant is the device's poll (RFC 8628 §3.4), dispatched from the one
+// token endpoint. It authenticates the client (confidential by secret, public by
+// client_id) and answers `authorization_pending` until a human approves, then
+// mints exactly once. The human who authenticated and approved at the
+// verification URI IS the end-user authentication.
+func deviceCodeGrant(c *zip.Ctx, db orm.DB) error {
+	ctx := c.Context()
+	now := nowFunc()
+
+	presented := param(c, "device_code")
+	if presented == "" {
+		return tokenError(c, 400, "invalid_request", "device_code is required")
+	}
+	row, err := store.GetTokenByCode(ctx, db, presented)
+	if err != nil {
+		return tokenError(c, 500, "server_error", "")
+	}
+	// Unknown, not a device authorization, or already redeemed. isDevice is what
+	// stops an authorization code being redeemed HERE, where neither its PKCE
+	// challenge nor its redirect_uri is verified.
+	if row == nil || !isDevice(row) || row.CodeIsUsed {
+		return deviceDead(c)
+	}
+	// Expired — reap it on the way past, so a dead authorization does not linger.
+	if expired(row.CodeExpireIn, now) {
+		_ = store.DeleteToken(ctx, db, row)
+		return deviceDead(c)
+	}
+
+	app, err := resolveTokenApp(ctx, db, row)
+	if err != nil {
+		return tokenError(c, 500, "server_error", "")
+	}
+	if app == nil {
+		return tokenError(c, 400, "invalid_grant", "the device code is invalid")
+	}
+	clientID, clientSecret := clientAuth(c)
+	if deviceClientMismatch(app, clientID) {
+		return tokenError(c, 400, "invalid_grant", "the device_code was not issued to this client")
+	}
+	// A confidential client authenticates on EVERY poll (RFC 8628 §3.4 → RFC 6749
+	// §3.2.1), checked before the pending/mint split so an unauthenticated
+	// confidential poll never even learns the grant's approval state. A public
+	// device client has no secret and is bound by its client_id alone (above).
+	if app.ClientSecret != "" &&
+		subtle.ConstantTimeCompare([]byte(clientSecret), []byte(app.ClientSecret)) != 1 {
+		return tokenErrorClient(c, "client authentication failed")
+	}
+	// Re-gated at redemption, not only at the request: an application whose device
+	// grant was withdrawn between the two must not still mint.
+	if !appGrants(app, deviceGrant) {
+		return tokenError(c, 400, "unsupported_grant_type", "the application does not permit the device grant")
+	}
+	// Not approved yet: leave the row exactly as it is — the device keeps polling.
+	if row.User == "" {
+		return tokenError(c, 400, "authorization_pending", "the device authorization is pending approval")
+	}
+
+	// One-shot: burn the approval BEFORE minting, so any later poll finds the row
+	// already redeemed rather than minting a second token off one approval. Like
+	// the authorization-code grant beside it this is a read-modify-write, not a
+	// compare-and-swap: two polls landing inside the same write window could still
+	// both mint. They mint the same user, app, scope and refresh family, so the
+	// duplicate is contained (revoking the family revokes both) — a real CAS is a
+	// property the Token row would have to carry for every grant, not just this one.
+	row.CodeIsUsed = true
+	if err := store.SaveToken(ctx, db, row); err != nil {
+		return tokenError(c, 500, "server_error", "")
+	}
+	resp, err := issueTokens(ctx, db, c, app, row, newFamilyID(row), now)
+	if err != nil {
+		return tokenError(c, 500, "server_error", "")
+	}
+	if err := store.SaveToken(ctx, db, row); err != nil {
+		return tokenError(c, 500, "server_error", "")
+	}
+	return c.JSON(200, resp)
+}
+
+// approveDevice binds an authenticated human's identity onto a pending device
+// authorization — the act that lets the device's next poll mint. The row's
+// application and scope stay authoritative for that mint: the portal app the
+// browser happens to be on is irrelevant to WHAT is being approved, so it is
+// never read here. Called from the login handler once the credential check has
+// already proven who the approver is.
+func approveDevice(c *zip.Ctx, db orm.DB, user *schema.User, userCode string) error {
+	// ONE opaque refusal for unknown / not-a-device / expired / already-approved /
+	// already-redeemed. The user_code is only 40 bits — the one secret in this
+	// flow — so an answer that distinguished those cases would turn this page into
+	// an oracle for hunting live codes.
+	const refuse = "the user code is invalid or expired"
+
+	ctx := c.Context()
+	row, err := store.GetTokenByUserCode(ctx, db, userCode)
+	if err != nil {
+		return httpx.Err(c, refuse)
+	}
+	if row == nil || !isDevice(row) || row.CodeIsUsed || row.User != "" ||
+		expired(row.CodeExpireIn, nowFunc()) {
+		return httpx.Err(c, refuse)
+	}
+	// Tenant boundary: a user in org A must not approve a device sign-in bound to
+	// an app in org B (a confused deputy — brands seed same-named superusers). The
+	// org compared is the DEVICE row's, captured when the code was issued. A
+	// SuperAdmin — a member of the reserved admin org, the one predicate — crosses
+	// tenants deliberately: that is the identity an operator signs a CLI into any
+	// brand's app with. An unresolvable tenant fails closed.
+	if row.Organization == "" {
+		return httpx.Err(c, refuse)
+	}
+	if !store.IsSuperAdmin(user.Owner) && user.Owner != row.Organization {
+		return httpx.Err(c, "your organization may not approve this device sign-in")
+	}
+
+	row.User = user.Owner + "/" + user.Name
+	if err := store.SaveToken(ctx, db, row); err != nil {
+		return httpx.Err(c, refuse)
+	}
+	return httpx.Ok(c, row.User)
+}
+
+// deviceDead is the one answer for a device_code that cannot be redeemed —
+// unknown, not a device authorization, already redeemed, or expired. To the
+// client those are the same fact (this code is dead, start over), so they get
+// the same words: sharing one answer makes that structural rather than a
+// coincidence of copied strings.
+func deviceDead(c *zip.Ctx) error {
+	return tokenError(c, 400, "expired_token", "the device code is expired or already redeemed")
+}
+
+// isDevice reports whether a code row is an RFC 8628 device authorization rather
+// than an authorization code. Both kinds live in Token.Code, so every grant
+// checks the kind before redeeming: an authorization code must never be redeemed
+// at the device grant, which verifies neither PKCE nor redirect_uri, and a
+// device code must never be redeemed at the authorization-code grant, which
+// would mint on a row no human has approved. The user_code IS the
+// discriminator — only a device authorization has one.
+func isDevice(tok *schema.Token) bool { return tok != nil && tok.UserCode != "" }
+
+// deviceClientMismatch reports whether clientID is NOT the client the device
+// authorization was issued to (RFC 8628 §3.4). Without this an approval for app
+// A is redeemable as app B: a confused deputy that hands the caller a token for
+// the wrong audience. Pure, so the binding is unit-testable.
+func deviceClientMismatch(app *schema.Application, clientID string) bool {
+	return app == nil ||
+		subtle.ConstantTimeCompare([]byte(clientID), []byte(app.ClientId)) != 1
+}
+
+// appGrants reports whether app permits grant — the per-application grant gate
+// (v1 IsGrantTypeValid, object/token_oauth.go:605). A grant must be DECLARED on
+// the application to be usable, so an app that never enabled the device grant can
+// never mint a device token. Fail-closed by construction: every live application
+// declares its grant set, so an app with none permits none.
+func appGrants(app *schema.Application, grant string) bool {
+	if app == nil {
+		return false
+	}
+	for _, g := range app.GrantTypes {
+		if g == grant {
+			return true
+		}
+	}
+	return false
+}
+
+// expired reports whether a unix deadline has passed. A zero deadline never
+// expires (the v1 convention for "unset").
+func expired(deadline int64, now time.Time) bool {
+	return deadline != 0 && now.Unix() > deadline
+}
+
+// newUserCode mints a user_code that no live row already carries. Each attempt
+// REGENERATES the candidate — a loop that re-tests one fixed code could never
+// clear a collision.
+func newUserCode(ctx context.Context, db orm.DB) (string, error) {
+	for range userCodeTries {
+		code, err := randomUserCode()
+		if err != nil {
+			return "", err
+		}
+		row, err := store.GetTokenByUserCode(ctx, db, code)
+		if err != nil {
+			return "", err
+		}
+		if row == nil {
+			return code, nil
+		}
+	}
+	return "", errUserCodeExhausted
+}
+
+// randomUserCode draws userCodeLen symbols uniformly from userCodeAlphabet.
+func randomUserCode() (string, error) {
+	buf := make([]byte, userCodeLen)
+	if _, err := rand.Read(buf); err != nil {
+		return "", err
+	}
+	for i := range buf {
+		buf[i] = userCodeAlphabet[buf[i]&0x1f]
+	}
+	return string(buf), nil
+}

internal/oidc/device_test.go

@@ -0,0 +1,584 @@
+// Copyright 2026 Hanzo AI, Inc. All rights reserved.
+
+package oidc
+
+import (
+	"net/http"
+	"net/url"
+	"strings"
+	"testing"
+	"time"
+
+	"github.com/hanzoai/orm"
+	"github.com/zap-proto/zip"
+
+	"github.com/hanzoai/iam/internal/schema"
+	"github.com/hanzoai/iam/internal/store"
+)
+
+// The RFC 8628 device grant, driven through the real router exactly as the two
+// live CLIs drive it: client_id/scope as QUERY params on the device request
+// (cloud/cli/device.go, codex-rs oidc_device_auth.rs), then a form-encoded poll
+// at the one token endpoint.
+
+// deviceGrants is the grant set a device-capable app declares — what hanzo-app
+// carries in the live seed.
+var deviceGrants = []string{"authorization_code", "refresh_token", deviceGrant}
+
+// seedDeviceApp seeds a public, device-capable app plus a user in its org.
+func seedDeviceApp(t *testing.T, db orm.DB, clientID string) {
+	t.Helper()
+	seedApp(t, db, appOpts{clientID: clientID, grants: deviceGrants})
+	seedUserInOrg(t, db, "hanzo", "alice", "alice@hanzo.ai", "pw")
+}
+
+// requestDevice drives POST /v1/iam/oauth/device the way a PUBLIC device client
+// does: client_id/scope only, no secret.
+func requestDevice(t *testing.T, app *zip.App, clientID, scope string) (*http.Response, map[string]any) {
+	t.Helper()
+	return requestDeviceSecret(t, app, clientID, "", scope)
+}
+
+// requestDeviceSecret drives the device request with an optional client_secret —
+// the confidential-client leg (RFC 8628 §3.1). An empty secret is the public
+// case.
+func requestDeviceSecret(t *testing.T, app *zip.App, clientID, secret, scope string) (*http.Response, map[string]any) {
+	t.Helper()
+	q := url.Values{"client_id": {clientID}, "scope": {scope}, "response_type": {"device_code"}}
+	if secret != "" {
+		q.Set("client_secret", secret)
+	}
+	resp, body := do(t, app, formReqNoBody("POST", PathDevice+"?"+q.Encode()))
+	return resp, decode(t, body)
+}
+
+// pollDevice drives one device poll at the token endpoint (public client).
+func pollDevice(t *testing.T, app *zip.App, clientID, deviceCode string) (*http.Response, map[string]any) {
+	t.Helper()
+	return pollDeviceSecret(t, app, clientID, "", deviceCode)
+}
+
+// pollDeviceSecret drives one device poll with an optional client_secret — the
+// confidential-client leg (RFC 8628 §3.4).
+func pollDeviceSecret(t *testing.T, app *zip.App, clientID, secret, deviceCode string) (*http.Response, map[string]any) {
+	t.Helper()
+	form := url.Values{
+		"grant_type":  {deviceGrant},
+		"client_id":   {clientID},
+		"device_code": {deviceCode},
+	}
+	if secret != "" {
+		form.Set("client_secret", secret)
+	}
+	resp, body := do(t, app, formReq("POST", PathToken, form))
+	return resp, decode(t, body)
+}
+
+// approveAs drives the human approval leg: POST /v1/iam/login {type:"device"}.
+func approveAs(t *testing.T, app *zip.App, org, user, userCode string) map[string]any {
+	t.Helper()
+	_, body := do(t, app, jsonReq("POST", PathLogin, map[string]string{
+		"organization": org, "username": user, "password": "pw",
+		"type": "device", "userCode": userCode,
+	}))
+	return decode(t, body)
+}
+
+// The device response carries exactly the keys both CLIs decode, with the TTL
+// and poll interval the server actually enforces. cloud/cli/device.go hard-fails
+// on an empty device_code/user_code, so an error envelope here is a dead CLI.
+func TestDevice_RequestShape(t *testing.T) {
+	app, db := newServer(t)
+	seedDeviceApp(t, db, "hanzo-app")
+
+	resp, m := requestDevice(t, app, "hanzo-app", "openid profile")
+	if resp.StatusCode != 200 {
+		t.Fatalf("status %d: %v", resp.StatusCode, m)
+	}
+	deviceCode, _ := m["device_code"].(string)
+	userCode, _ := m["user_code"].(string)
+	if deviceCode == "" || userCode == "" {
+		t.Fatalf("device_code/user_code must be non-empty: %v", m)
+	}
+	if m["expires_in"] != float64(900) {
+		t.Errorf("expires_in = %v, want 900", m["expires_in"])
+	}
+	if m["interval"] != float64(5) {
+		t.Errorf("interval = %v, want 5", m["interval"])
+	}
+	// verification_uri_complete must be the PATH form: the SPA route is
+	// /login/oauth/device/:userCode.
+	verify, _ := m["verification_uri"].(string)
+	if verify != "https://hanzo.id"+PathDeviceVerify {
+		t.Errorf("verification_uri = %q", verify)
+	}
+	if got, want := m["verification_uri_complete"], verify+"/"+userCode; got != want {
+		t.Errorf("verification_uri_complete = %v, want %v", got, want)
+	}
+	if resp.Header.Get("Cache-Control") != "no-store" {
+		t.Errorf("Cache-Control = %q, want no-store", resp.Header.Get("Cache-Control"))
+	}
+
+	// The user_code must be transcribable AND survive the portal's
+	// normalization (uppercase, separators stripped) unchanged — a code the
+	// portal rewrites is a code the lookup can never find.
+	if len(userCode) != userCodeLen {
+		t.Errorf("user_code %q: length %d, want %d", userCode, len(userCode), userCodeLen)
+	}
+	if got := strings.ToUpper(strings.ReplaceAll(userCode, "-", "")); got != userCode {
+		t.Errorf("user_code %q is not already normalized (portal would send %q)", userCode, got)
+	}
+	for _, r := range userCode {
+		if !strings.ContainsRune(userCodeAlphabet, r) {
+			t.Errorf("user_code %q contains ambiguous symbol %q", userCode, r)
+		}
+	}
+
+	// The pending grant is a persisted row, not process-local state.
+	row, err := store.GetTokenByCode(tctx(), db, deviceCode)
+	if err != nil || row == nil {
+		t.Fatalf("device authorization was not persisted: %v", err)
+	}
+	if row.User != "" {
+		t.Errorf("a fresh device authorization must be unapproved, got user %q", row.User)
+	}
+	if row.UserCode != userCode {
+		t.Errorf("row.UserCode = %q, want %q", row.UserCode, userCode)
+	}
+}
+
+// Discovery advertises the device endpoint and grant so a discovery-driven
+// client can find them.
+func TestDevice_Discovery(t *testing.T) {
+	app, _ := newServer(t)
+	_, body := do(t, app, formReqNoBody("GET", PathDiscovery))
+	d := decode(t, body)
+	if d["device_authorization_endpoint"] != "https://hanzo.id"+PathDevice {
+		t.Errorf("device_authorization_endpoint = %v, want %v", d["device_authorization_endpoint"], "https://hanzo.id"+PathDevice)
+	}
+	gts, _ := d["grant_types_supported"].([]any)
+	found := false
+	for _, g := range gts {
+		if g == deviceGrant {
+			found = true
+		}
+	}
+	if !found {
+		t.Errorf("grant_types_supported missing %q: %v", deviceGrant, gts)
+	}
+}
+
+// Before approval the poll answers authorization_pending and LEAVES the row —
+// the CLI polls on this answer, so consuming the row would end the login.
+func TestDevice_PollPendingIsRepeatable(t *testing.T) {
+	app, db := newServer(t)
+	seedDeviceApp(t, db, "hanzo-app")
+	_, da := requestDevice(t, app, "hanzo-app", "openid")
+	deviceCode := da["device_code"].(string)
+
+	for i := range 3 {
+		resp, m := pollDevice(t, app, "hanzo-app", deviceCode)
+		if resp.StatusCode != 400 {
+			t.Fatalf("poll %d: status %d, want 400", i, resp.StatusCode)
+		}
+		if m["error"] != "authorization_pending" {
+			t.Fatalf("poll %d: error = %v, want authorization_pending", i, m["error"])
+		}
+		// A 401 would send the CLI down its terminal error path.
+		if resp.Header.Get("WWW-Authenticate") != "" {
+			t.Fatalf("poll %d: a pending poll must not carry a WWW-Authenticate challenge", i)
+		}
+	}
+	if row, _ := store.GetTokenByCode(tctx(), db, deviceCode); row == nil {
+		t.Fatal("a pending poll must not consume the device authorization")
+	}
+}
+
+// The whole point, end to end: approve once, mint once. The SECOND poll of an
+// approved code must fail — one approval is one token.
+func TestDevice_ApproveThenPollMintsExactlyOnce(t *testing.T) {
+	app, db := newServer(t)
+	seedDeviceApp(t, db, "hanzo-app")
+	_, da := requestDevice(t, app, "hanzo-app", "openid profile")
+	deviceCode, userCode := da["device_code"].(string), da["user_code"].(string)
+
+	if m := approveAs(t, app, "hanzo", "alice", userCode); m["status"] != "ok" {
+		t.Fatalf("approval failed: %v", m)
+	}
+	// The approval binds the approver onto the row — identity comes from there,
+	// never from the polling device.
+	row, _ := store.GetTokenByCode(tctx(), db, deviceCode)
+	if row == nil || row.User != "hanzo/alice" {
+		t.Fatalf("approval must bind the approver onto the row, got %+v", row)
+	}
+
+	resp, m := pollDevice(t, app, "hanzo-app", deviceCode)
+	if resp.StatusCode != 200 {
+		t.Fatalf("approved poll: status %d: %v", resp.StatusCode, m)
+	}
+	access, _ := m["access_token"].(string)
+	if access == "" {
+		t.Fatalf("approved poll must mint an access_token: %v", m)
+	}
+	if id, _ := m["id_token"].(string); id == "" {
+		t.Error("the openid scope must mint an id_token")
+	}
+	if rt, _ := m["refresh_token"].(string); rt == "" {
+		t.Error("the device grant must mint a refresh token")
+	}
+	// The minted token describes the approver, and is usable.
+	claims, err := verifyToken(tctx(), db, access)
+	if err != nil {
+		t.Fatalf("minted access token does not verify: %v", err)
+	}
+	if claims.Subject != "hanzo/alice" {
+		t.Errorf("sub = %q, want hanzo/alice", claims.Subject)
+	}
+
+	// One approval, one token: a replayed poll gets nothing.
+	resp2, m2 := pollDevice(t, app, "hanzo-app", deviceCode)
+	if resp2.StatusCode != 400 || m2["error"] != "expired_token" {
+		t.Fatalf("second poll: %d %v, want 400 expired_token", resp2.StatusCode, m2)
+	}
+	if _, ok := m2["access_token"]; ok {
+		t.Fatal("a redeemed device code must never mint twice")
+	}
+}
+
+// A CONFIDENTIAL device client authenticates at BOTH legs (RFC 8628 §3.1 request,
+// §3.4 poll). Without its secret the request is refused and the poll — even of an
+// approved code — mints nothing; with the secret both succeed.
+func TestDevice_ConfidentialClientAuth(t *testing.T) {
+	app, db := newServer(t)
+	seedApp(t, db, appOpts{clientID: "conf-cli", secret: "s3cret", grants: deviceGrants})
+	seedUserInOrg(t, db, "hanzo", "alice", "alice@hanzo.ai", "pw")
+
+	// §3.1: a confidential client's device request without its secret is refused.
+	resp, m := requestDevice(t, app, "conf-cli", "openid")
+	if resp.StatusCode != 401 || m["error"] != "invalid_client" {
+		t.Fatalf("unauthenticated device request: %d %v, want 401 invalid_client", resp.StatusCode, m)
+	}
+	if m["device_code"] != nil {
+		t.Fatal("a refused device request must not mint a device_code")
+	}
+
+	// With the secret it succeeds.
+	resp, m = requestDeviceSecret(t, app, "conf-cli", "s3cret", "openid")
+	if resp.StatusCode != 200 {
+		t.Fatalf("authenticated device request: %d %v", resp.StatusCode, m)
+	}
+	deviceCode, userCode := m["device_code"].(string), m["user_code"].(string)
+	if am := approveAs(t, app, "hanzo", "alice", userCode); am["status"] != "ok" {
+		t.Fatalf("approval failed: %v", am)
+	}
+
+	// §3.4: the poll without the secret is refused — even though the code is
+	// approved — and mints nothing.
+	presp, pm := pollDevice(t, app, "conf-cli", deviceCode)
+	if presp.StatusCode != 401 || pm["error"] != "invalid_client" {
+		t.Fatalf("unauthenticated poll: %d %v, want 401 invalid_client", presp.StatusCode, pm)
+	}
+	if _, ok := pm["access_token"]; ok {
+		t.Fatal("an unauthenticated confidential poll must never mint")
+	}
+
+	// With the secret the poll mints.
+	presp, pm = pollDeviceSecret(t, app, "conf-cli", "s3cret", deviceCode)
+	if presp.StatusCode != 200 || pm["access_token"] == nil {
+		t.Fatalf("authenticated poll must mint: %d %v", presp.StatusCode, pm)
+	}
+}
+
+// Tenant boundary: a user in org B must not approve a device sign-in bound to an
+// app in org A. A SuperAdmin — a member of the reserved admin org — may, because
+// that is the identity an operator signs a CLI into any brand with.
+func TestDevice_ApprovalTenantBoundary(t *testing.T) {
+	for _, tc := range []struct {
+		name  string
+		org   string // approver's org; the device app lives in "hanzo"
+		allow bool
+	}{
+		{"same org approves", "hanzo", true},
+		{"foreign org refused", "lux", false},
+		{"superadmin crosses tenants", "admin", true},
+	} {
+		t.Run(tc.name, func(t *testing.T) {
+			app, db := newServer(t)
+			seedApp(t, db, appOpts{clientID: "hanzo-app", grants: deviceGrants}) // org "hanzo"
+			seedUserInOrg(t, db, tc.org, "eve", "eve@"+tc.org+".example", "pw")
+
+			_, da := requestDevice(t, app, "hanzo-app", "openid")
+			deviceCode, userCode := da["device_code"].(string), da["user_code"].(string)
+
+			m := approveAs(t, app, tc.org, "eve", userCode)
+			row, _ := store.GetTokenByCode(tctx(), db, deviceCode)
+
+			if !tc.allow {
+				if m["status"] != "error" {
+					t.Fatalf("cross-tenant approval must be refused, got %v", m)
+				}
+				// The store is the proof: refused means NOT approved.
+				if row.User != "" {
+					t.Fatalf("refused approval must not bind a user, got %q", row.User)
+				}
+				// And the device must still not be able to mint.
+				if _, p := pollDevice(t, app, "hanzo-app", deviceCode); p["error"] != "authorization_pending" {
+					t.Fatalf("a refused approval must leave the device pending, got %v", p)
+				}
+				return
+			}
+			if m["status"] != "ok" {
+				t.Fatalf("approval must succeed, got %v", m)
+			}
+			if row.User != tc.org+"/eve" {
+				t.Fatalf("row.User = %q, want %q", row.User, tc.org+"/eve")
+			}
+		})
+	}
+}
+
+// RFC 8628 §3.4: a device_code is redeemable only by the client it was issued
+// to. Otherwise an approval for app A is redeemable as app B — a token for the
+// wrong audience.
+func TestDevice_ClientBinding(t *testing.T) {
+	app, db := newServer(t)
+	seedDeviceApp(t, db, "hanzo-app")
+	seedApp(t, db, appOpts{clientID: "other-app", grants: deviceGrants})
+
+	_, da := requestDevice(t, app, "hanzo-app", "openid")
+	deviceCode, userCode := da["device_code"].(string), da["user_code"].(string)
+	if m := approveAs(t, app, "hanzo", "alice", userCode); m["status"] != "ok" {
+		t.Fatalf("approval failed: %v", m)
+	}
+
+	resp, m := pollDevice(t, app, "other-app", deviceCode)
+	if resp.StatusCode != 400 || m["error"] != "invalid_grant" {
+		t.Fatalf("foreign client redemption: %d %v, want 400 invalid_grant", resp.StatusCode, m)
+	}
+	if _, ok := m["access_token"]; ok {
+		t.Fatal("a device_code must never be redeemable by another client")
+	}
+	// The rightful client can still redeem — the binding refused, it did not burn.
+	if _, own := pollDevice(t, app, "hanzo-app", deviceCode); own["access_token"] == nil {
+		t.Fatalf("the issuing client must still redeem its own code: %v", own)
+	}
+}
+
+// An expired device_code is dead even once approved.
+func TestDevice_Expiry(t *testing.T) {
+	app, db := newServer(t)
+	seedDeviceApp(t, db, "hanzo-app")
+	start := time.Unix(1_800_000_000, 0)
+	nowFuncSet(t, start)
+
+	_, da := requestDevice(t, app, "hanzo-app", "openid")
+	deviceCode, userCode := da["device_code"].(string), da["user_code"].(string)
+	if m := approveAs(t, app, "hanzo", "alice", userCode); m["status"] != "ok" {
+		t.Fatalf("approval failed: %v", m)
+	}
+
+	nowFuncSet(t, start.Add(deviceCodeTTL+time.Second))
+	resp, m := pollDevice(t, app, "hanzo-app", deviceCode)
+	if resp.StatusCode != 400 || m["error"] != "expired_token" {
+		t.Fatalf("expired poll: %d %v, want 400 expired_token", resp.StatusCode, m)
+	}
+	if _, ok := m["access_token"]; ok {
+		t.Fatal("an expired device code must never mint")
+	}
+	if row, _ := store.GetTokenByCode(tctx(), db, deviceCode); row != nil {
+		t.Error("an expired device authorization should be reaped on the poll that finds it")
+	}
+}
+
+// The per-application grant gate: an app that never declared the device grant
+// can neither start a device flow nor redeem one. Gated at BOTH ends, so a row
+// created while the grant was enabled cannot mint after it is withdrawn.
+func TestDevice_GrantGate(t *testing.T) {
+	app, db := newServer(t)
+	// A real app, fully functional — it simply never declared the device grant.
+	seedApp(t, db, appOpts{clientID: "web-only", grants: []string{"authorization_code", "refresh_token"}})
+	seedUserInOrg(t, db, "hanzo", "alice", "alice@hanzo.ai", "pw")
+
+	resp, m := requestDevice(t, app, "web-only", "openid")
+	if resp.StatusCode != 400 || m["error"] != "unsupported_grant_type" {
+		t.Fatalf("request: %d %v, want 400 unsupported_grant_type", resp.StatusCode, m)
+	}
+	if m["device_code"] != nil {
+		t.Fatal("a refused device request must not mint a device_code")
+	}
+
+	// And at the poll: forge a device row for the app, as if the grant had been
+	// enabled and then withdrawn, and prove the redemption is still refused.
+	seedApp(t, db, appOpts{clientID: "was-enabled", grants: deviceGrants})
+	_, da := requestDevice(t, app, "was-enabled", "openid")
+	deviceCode, userCode := da["device_code"].(string), da["user_code"].(string)
+	if am := approveAs(t, app, "hanzo", "alice", userCode); am["status"] != "ok" {
+		t.Fatalf("approval failed: %v", am)
+	}
+	withdrawGrants(t, db, "was-enabled")
+
+	resp2, m2 := pollDevice(t, app, "was-enabled", deviceCode)
+	if resp2.StatusCode != 400 || m2["error"] != "unsupported_grant_type" {
+		t.Fatalf("poll after withdrawal: %d %v, want 400 unsupported_grant_type", resp2.StatusCode, m2)
+	}
+	if _, ok := m2["access_token"]; ok {
+		t.Fatal("an app without the device grant must never mint a device token")
+	}
+}
+
+// The user_code is the only secret in the approval flow (40 bits), so unknown,
+// expired, and already-approved codes must be indistinguishable — otherwise the
+// approval page is an oracle for hunting live codes.
+func TestDevice_UserCodeRefusalIsNonDifferential(t *testing.T) {
+	app, db := newServer(t)
+	seedDeviceApp(t, db, "hanzo-app")
+	start := time.Unix(1_800_000_000, 0)
+	nowFuncSet(t, start)
+
+	// (a) unknown
+	unknown := approveAs(t, app, "hanzo", "alice", "ZZZZZZZZ")
+
+	// (b) already approved
+	_, da := requestDevice(t, app, "hanzo-app", "openid")
+	if m := approveAs(t, app, "hanzo", "alice", da["user_code"].(string)); m["status"] != "ok" {
+		t.Fatalf("first approval must succeed: %v", m)
+	}
+	reapproved := approveAs(t, app, "hanzo", "alice", da["user_code"].(string))
+
+	// (c) expired
+	_, da2 := requestDevice(t, app, "hanzo-app", "openid")
+	nowFuncSet(t, start.Add(deviceCodeTTL+time.Second))
+	expiredCode := approveAs(t, app, "hanzo", "alice", da2["user_code"].(string))
+
+	for _, m := range []map[string]any{unknown, reapproved, expiredCode} {
+		if m["status"] != "error" {
+			t.Fatalf("must be refused: %v", m)
+		}
+	}
+	if unknown["msg"] != reapproved["msg"] || unknown["msg"] != expiredCode["msg"] {
+		t.Fatalf("refusals differ — an oracle: unknown=%q reapproved=%q expired=%q",
+			unknown["msg"], reapproved["msg"], expiredCode["msg"])
+	}
+}
+
+// An AUTHORIZATION code must never be redeemable at the device grant. The device
+// grant verifies neither PKCE nor redirect_uri, so accepting one there would
+// defeat both for any app that permits the device grant — a stolen code would
+// mint tokens with no verifier.
+func TestDevice_AuthorizationCodeIsNotRedeemableAsDeviceCode(t *testing.T) {
+	app, db := newServer(t)
+	seedApp(t, db, appOpts{clientID: "hanzo-app", grants: deviceGrants, redirectURIs: []string{testRedirect}})
+	seedUserInOrg(t, db, "hanzo", "alice", "alice@hanzo.ai", "pw")
+
+	verifier := "device-xchg-verifier-00000000000000000000000000000"
+	code, _, _ := loginForCode(t, app, map[string]string{
+		"organization": "hanzo", "username": "alice", "password": "pw",
+		"clientId": "hanzo-app", "redirectUri": testRedirect, "scope": "openid",
+		"codeChallenge": ComputeS256Challenge(verifier), "codeChallengeMethod": "S256",
+	})
+	if code == "" {
+		t.Fatal("setup: no authorization code minted")
+	}
+
+	resp, m := pollDevice(t, app, "hanzo-app", code)
+	if _, ok := m["access_token"]; ok {
+		t.Fatal("PKCE BYPASS: an authorization code was redeemed at the device grant")
+	}
+	if resp.StatusCode != 400 || m["error"] != "expired_token" {
+		t.Fatalf("got %d %v, want 400 expired_token", resp.StatusCode, m)
+	}
+	// The real exchange still works — the guard refused, it did not burn the code.
+	if _, tm := exchangeCode(t, app, url.Values{
+		"code": {code}, "client_id": {"hanzo-app"},
+		"code_verifier": {verifier}, "redirect_uri": {testRedirect},
+	}); tm["access_token"] == nil {
+		t.Fatalf("the legitimate code exchange must still succeed: %v", tm)
+	}
+}
+
+// The mirror image: a DEVICE code must never be redeemable at the
+// authorization-code grant, which would mint on a row no human has approved.
+func TestDevice_DeviceCodeIsNotRedeemableAsAuthorizationCode(t *testing.T) {
+	app, db := newServer(t)
+	// A CONFIDENTIAL app: its secret would otherwise satisfy the code grant's
+	// client check, and an unapproved device row carries no PKCE challenge to
+	// stop it. The device request authenticates that same secret (§3.1).
+	seedApp(t, db, appOpts{clientID: "conf-app", secret: "s3cret", grants: deviceGrants})
+	seedUserInOrg(t, db, "hanzo", "alice", "alice@hanzo.ai", "pw")
+
+	_, da := requestDeviceSecret(t, app, "conf-app", "s3cret", "openid")
+	deviceCode := da["device_code"].(string)
+
+	_, m := exchangeCode(t, app, url.Values{
+		"code": {deviceCode}, "client_id": {"conf-app"}, "client_secret": {"s3cret"},
+	})
+	if _, ok := m["access_token"]; ok {
+		t.Fatal("APPROVAL BYPASS: an unapproved device code minted at the authorization-code grant")
+	}
+	if m["error"] != "invalid_grant" {
+		t.Fatalf("error = %v, want invalid_grant", m["error"])
+	}
+}
+
+// An unknown client_id is refused — and mints nothing.
+func TestDevice_UnknownClient(t *testing.T) {
+	app, _ := newServer(t)
+	resp, m := requestDevice(t, app, "no-such-client", "openid")
+	if resp.StatusCode != 400 || m["error"] != "invalid_client" {
+		t.Fatalf("got %d %v, want 400 invalid_client", resp.StatusCode, m)
+	}
+	if m["device_code"] != nil {
+		t.Fatal("an unknown client must not mint a device_code")
+	}
+}
+
+// appGrants is the pure gate both ends call.
+func TestAppGrants(t *testing.T) {
+	for _, tc := range []struct {
+		name    string
+		declare []string
+		want    bool
+	}{
+		{"declared", deviceGrants, true},
+		{"not declared", []string{"authorization_code", "refresh_token"}, false},
+		{"none declared", nil, false},
+	} {
+		t.Run(tc.name, func(t *testing.T) {
+			if got := appGrants(&schema.Application{GrantTypes: tc.declare}, deviceGrant); got != tc.want {
+				t.Fatalf("appGrants(%v) = %v, want %v", tc.declare, got, tc.want)
+			}
+		})
+	}
+	if appGrants(nil, deviceGrant) {
+		t.Fatal("a nil application must permit nothing")
+	}
+}
+
+// user_codes are drawn fresh each time — a generator that reuses one value could
+// never clear a collision.
+func TestRandomUserCode_Distinct(t *testing.T) {
+	seen := map[string]bool{}
+	for range 64 {
+		code, err := randomUserCode()
+		if err != nil {
+			t.Fatal(err)
+		}
+		if seen[code] {
+			t.Fatalf("user_code %q repeated — the draw is not random", code)
+		}
+		seen[code] = true
+	}
+}
+
+// withdrawGrants strips an application's declared grants in place.
+func withdrawGrants(t *testing.T, db orm.DB, name string) {
+	t.Helper()
+	a, err := orm.Get[schema.Application](db, "admin/"+name)
+	if err != nil {
+		t.Fatalf("load app %s: %v", name, err)
+	}
+	a.GrantTypes = nil
+	if err := a.UpdateCtx(tctx()); err != nil {
+		t.Fatalf("withdraw grants: %v", err)
+	}
+}

internal/oidc/discovery_test.go

@@ -0,0 +1,81 @@
+// Copyright 2026 Hanzo AI, Inc. All rights reserved.
+
+package oidc
+
+import (
+	"testing"
+)
+
+// Discovery is served at both well-known paths, host-relative, advertising only
+// what iam2 implements — matching the live hanzo.id surface so a client's
+// discovery step is unchanged across the backend swap.
+func TestDiscovery_ShapeAtBothPaths(t *testing.T) {
+	app, _ := newServer(t)
+
+	for _, path := range []string{PathDiscovery, PathDiscoveryV1} {
+		resp, body := do(t, app, formReqNoBody("GET", path))
+		if resp.StatusCode != 200 {
+			t.Fatalf("%s: status %d", path, resp.StatusCode)
+		}
+		d := decode(t, body)
+		if d["issuer"] != "https://hanzo.id" {
+			t.Errorf("%s: issuer = %v, want https://hanzo.id", path, d["issuer"])
+		}
+		if d["authorization_endpoint"] != "https://hanzo.id"+PathAuthorize {
+			t.Errorf("%s: authorization_endpoint = %v", path, d["authorization_endpoint"])
+		}
+		if d["token_endpoint"] != "https://hanzo.id"+PathToken {
+			t.Errorf("%s: token_endpoint = %v", path, d["token_endpoint"])
+		}
+		if d["userinfo_endpoint"] != "https://hanzo.id"+PathUserInfo {
+			t.Errorf("%s: userinfo_endpoint = %v", path, d["userinfo_endpoint"])
+		}
+		if d["jwks_uri"] != "https://hanzo.id"+PathJWKS {
+			t.Errorf("%s: jwks_uri = %v", path, d["jwks_uri"])
+		}
+		if !containsStr(d["code_challenge_methods_supported"], "S256") {
+			t.Errorf("%s: S256 not advertised", path)
+		}
+		if containsStr(d["code_challenge_methods_supported"], "plain") {
+			t.Errorf("%s: plain must never be advertised", path)
+		}
+		for _, alg := range []string{"RS256", "ES256", "MLDSA65"} {
+			if !containsStr(d["id_token_signing_alg_values_supported"], alg) {
+				t.Errorf("%s: signing alg %s not advertised", path, alg)
+			}
+		}
+		for _, gt := range []string{"authorization_code", "refresh_token", "client_credentials"} {
+			if !containsStr(d["grant_types_supported"], gt) {
+				t.Errorf("%s: grant %s not advertised", path, gt)
+			}
+		}
+	}
+}
+
+// The issuer follows the request host (X-Forwarded-Host at the edge), so
+// discovery and the tokens it describes never split origin.
+func TestDiscovery_IssuerFollowsForwardedHost(t *testing.T) {
+	app, _ := newServer(t)
+	req := formReqNoBody("GET", PathDiscovery)
+	req.Header.Set("X-Forwarded-Host", "id.example.test")
+	resp, body := do(t, app, req)
+	if resp.StatusCode != 200 {
+		t.Fatalf("status %d", resp.StatusCode)
+	}
+	if got := decode(t, body)["issuer"]; got != "https://id.example.test" {
+		t.Fatalf("issuer = %v, want https://id.example.test", got)
+	}
+}
+
+func containsStr(v any, want string) bool {
+	list, ok := v.([]any)
+	if !ok {
+		return false
+	}
+	for _, s := range list {
+		if s == want {
+			return true
+		}
+	}
+	return false
+}

internal/oidc/federation.go

@@ -0,0 +1,642 @@
+// Copyright 2026 Hanzo AI, Inc. All rights reserved.
+
+package oidc
+
+import (
+	"context"
+	"crypto/rand"
+	"crypto/subtle"
+	"encoding/hex"
+	"encoding/json"
+	"errors"
+	"net/url"
+	"os"
+	"strings"
+	"time"
+
+	"github.com/hanzoai/orm"
+	fiber "github.com/zap-proto/fiber/v3"
+	"github.com/zap-proto/zip"
+
+	"github.com/hanzoai/iam/internal/mfa/factor"
+	"github.com/hanzoai/iam/internal/schema"
+	"github.com/hanzoai/iam/internal/store"
+	"github.com/hanzoai/iam/internal/users"
+)
+
+// Identity federation — iam2 as an OIDC/OAuth2 Relying Party to external IdPs.
+//
+// A social sign-in is a DETOUR inside the ordinary authorization-code flow. The
+// authorize endpoint, having already validated the client and its EXACT
+// redirect_uri (so there is a trusted target before anything is trusted), hands
+// a request that names a `provider` to beginFederation, which stashes the whole
+// app-leg request server-side and sends the browser to the IdP. When the IdP
+// returns to the fixed callback, iam2 verifies the response, LINKS or PROVISIONS
+// a local user, and mints ITS OWN authorization code — bound to the original
+// PKCE challenge, redirect_uri, and nonce — exactly as a password login would.
+// The relying party's existing PKCE code→token exchange then completes unchanged.
+//
+// The whole surface lives on the PUBLIC group (before the Guard): it
+// self-authenticates through the single-use, browser-bound, expiring state, not
+// a bearer. Every failure is fail-closed; no IdP token or secret is ever logged.
+
+// PathFederationCallback is the fixed IdP return endpoint. One callback for every
+// provider — the provider is recovered from the server-side transaction the
+// state keys, never from a spoofable URL segment. It is the redirect_uri iam2
+// registers with each external IdP.
+const PathFederationCallback = "/v1/iam/oauth/callback"
+
+// PathMfaVerify is the hosted 2FA PAGE (a route in the SPA, not an API path) the
+// federation callback sends a second-factor-enrolled user's browser to. The page
+// collects the factor and POSTs it to PathFederationMfa; the challenge id rides
+// the httpOnly cookie the callback set, never a URL segment.
+const PathMfaVerify = "/login/mfa"
+
+// fedCookieName is the per-transaction anti-forgery cookie the begin leg sets and
+// the callback checks — the browser binding that defeats login-CSRF.
+const fedCookieName = "hanzo_fed"
+
+// fedStateTTL bounds how long a federation transaction (and its cookie) is
+// redeemable. Short, because it only has to survive one IdP round-trip.
+const fedStateTTL = 10 * time.Minute
+
+// routeFederation registers the IdP callback on the PUBLIC group r. GET only: the
+// IdP returns via a top-level browser redirect (Google/GitHub), on which the
+// SameSite=Lax browser-binding cookie IS sent. A cross-site form_post (POST) would
+// NOT carry a Lax cookie, so the bind check would fail closed — rather than ship a
+// half-working POST path, form_post support is a deliberate future change (it needs
+// SameSite=None + its own CSRF analysis). The callback self-authenticates via the
+// single-use state + the browser cookie.
+func routeFederation(r zip.Router, db orm.DB) {
+	r.Get(PathFederationCallback, federationCallbackHandler(db))
+}
+
+// beginFederation starts an Authorization-Code federation. It is entered from
+// authorizeHandler ONLY after the client_id and exact redirect_uri are validated
+// and the response_type/PKCE policy is enforced, so a protocol error may now be
+// redirected to the trusted redirect_uri (RFC 6749 §4.1.2.1). It resolves the
+// named provider, mints a single-use transaction, sets the browser-binding
+// cookie, and sends the browser to the IdP.
+func beginFederation(c *zip.Ctx, db orm.DB, app *schema.Application, q authorizeRequest, method string) error {
+	ctx := c.Context()
+
+	// A federated (external) identity may never be minted into a reserved system
+	// org (the SuperAdmin vector) nor into a tenant an attacker-owned app has no
+	// right to serve. Refuse BEFORE starting the round-trip (fail fast, no IdP
+	// traffic) — defense in depth behind the application-write org authorization.
+	if !federationOrgAllowed(app) {
+		return authorizeErrorRedirect(c, q, "access_denied", "federation is not permitted for this application")
+	}
+
+	store.EnrichProviders(ctx, db, app)
+	prov := federationProvider(app, q.provider)
+	if prov == nil {
+		return authorizeErrorRedirect(c, q, "invalid_request", "unknown or unavailable provider")
+	}
+	if idpKind(prov) == "" {
+		return authorizeErrorRedirect(c, q, "invalid_request", "provider is not a supported federation type")
+	}
+	if _, ok := connectorFor(prov.Type); !ok {
+		return authorizeErrorRedirect(c, q, "invalid_request", "provider has no local identity binding")
+	}
+
+	state, err := newOpaqueToken()
+	if err != nil {
+		return authorizeErrorRedirect(c, q, "server_error", "")
+	}
+	verifier, err := newOpaqueToken()
+	if err != nil {
+		return authorizeErrorRedirect(c, q, "server_error", "")
+	}
+	nonce, err := newOpaqueToken()
+	if err != nil {
+		return authorizeErrorRedirect(c, q, "server_error", "")
+	}
+	bindSecret, err := newOpaqueToken()
+	if err != nil {
+		return authorizeErrorRedirect(c, q, "server_error", "")
+	}
+
+	now := nowFunc()
+	st := &schema.FederationState{
+		Owner:               providerOwner(prov),
+		Name:                state,
+		CreatedTime:         now.UTC().Format(time.RFC3339),
+		Provider:            prov.Name,
+		ClientId:            q.clientID,
+		RedirectUri:         q.redirectURI,
+		AppState:            q.state,
+		Scope:               q.scope,
+		AppNonce:            q.nonce,
+		CodeChallenge:       q.codeChallenge,
+		CodeChallengeMethod: method,
+		Resource:            q.resource,
+		IdpVerifier:         verifier,
+		IdpNonce:            nonce,
+		BindHash:            hashToken(bindSecret),
+		ExpireIn:            now.Add(fedStateTTL).Unix(),
+	}
+
+	// Build the IdP authorize URL BEFORE persisting so a discovery/config failure
+	// never leaves an orphaned transaction row.
+	idpURL, err := idpAuthorizeURL(ctx, prov, st, federationCallbackURL(c))
+	if err != nil {
+		return authorizeErrorRedirect(c, q, "temporarily_unavailable", "the identity provider is unavailable")
+	}
+	if err := store.PersistFederationState(ctx, db, st); err != nil {
+		return authorizeErrorRedirect(c, q, "server_error", "")
+	}
+	setBindCookie(c, bindSecret)
+	return c.Redirect(302, idpURL)
+}
+
+// federationCallbackHandler completes the round-trip: it resolves and burns the
+// single-use transaction (checking expiry + browser binding), exchanges and
+// verifies the IdP response, links or provisions the local user, and mints the
+// iam2 authorization code the relying party expects — then redirects to the
+// original redirect_uri with code + state.
+func federationCallbackHandler(db orm.DB) zip.Handler {
+	return func(c *zip.Ctx) error {
+		ctx := c.Context()
+		now := nowFunc()
+
+		state := param(c, "state")
+		if state == "" {
+			return authorizeUserError(c, "missing state")
+		}
+		st, err := store.GetFederationState(ctx, db, state)
+		if err != nil {
+			return authorizeUserError(c, "internal error")
+		}
+		// Until the state resolves there is NO trusted redirect target, so an
+		// invalid/expired/replayed state is answered in place, never redirected.
+		if st == nil || st.Used || (st.ExpireIn != 0 && now.Unix() > st.ExpireIn) {
+			return authorizeUserError(c, "the federation session is invalid or expired")
+		}
+		// Browser binding: the callback must present the same anti-forgery cookie
+		// the begin leg set in THIS browser (constant-time) — the login-CSRF /
+		// session-fixation defense. A stolen or injected state without the cookie
+		// stops here.
+		raw := readBindCookie(c)
+		if raw == "" || subtle.ConstantTimeCompare([]byte(hashToken(raw)), []byte(st.BindHash)) != 1 {
+			return authorizeUserError(c, "the federation session could not be verified")
+		}
+		// Burn the transaction now (single-use). A concurrent replay reads Used and
+		// loses; a later replay finds nothing.
+		st.Used = true
+		if err := store.SaveFederationState(ctx, db, st); err != nil {
+			return authorizeUserError(c, "internal error")
+		}
+		clearBindCookie(c)
+
+		// Resolve the relying-party app (the trusted redirect target) and re-check
+		// its redirect_uri against the live allow-list — never trust the stored
+		// value blindly (defense in depth against a tampered row).
+		app, err := store.GetApplicationByClientId(ctx, db, st.ClientId)
+		if err != nil || app == nil {
+			return authorizeUserError(c, "the client application is unavailable")
+		}
+		if !app.IsRedirectUriValid(st.RedirectUri) {
+			return authorizeUserError(c, "invalid redirect_uri")
+		}
+		// Re-assert the reserved-org / tenant-legitimacy gate at the mint boundary,
+		// never trusting that the begin leg still holds or that the app row is honest.
+		if !federationOrgAllowed(app) {
+			return fedErrorRedirect(c, st, "access_denied", "federation is not permitted for this application")
+		}
+		prov, err := store.GetProvider(ctx, db, st.Owner, st.Provider)
+		if err != nil || prov == nil {
+			return fedErrorRedirect(c, st, "temporarily_unavailable", "the identity provider is unavailable")
+		}
+
+		// An IdP-reported denial (user declined / error) is surfaced to the RP as
+		// access_denied, not a server error.
+		if e := param(c, "error"); e != "" {
+			return fedErrorRedirect(c, st, "access_denied", "the identity provider denied the request")
+		}
+		code := param(c, "code")
+		if code == "" {
+			return fedErrorRedirect(c, st, "invalid_request", "the identity provider returned no code")
+		}
+
+		identity, err := idpExchange(ctx, prov, st, code, federationCallbackURL(c), now)
+		if err != nil || identity.subject == "" {
+			return fedErrorRedirect(c, st, "access_denied", "the identity provider could not be verified")
+		}
+
+		user, err := linkOrProvision(ctx, db, app, prov, identity)
+		if err != nil {
+			return fedErrorRedirect(c, st, "server_error", "")
+		}
+		if user.IsForbidden || user.IsDeleted {
+			return fedErrorRedirect(c, st, "access_denied", "the account is not permitted")
+		}
+
+		// The resume parameters — the ORIGINAL authorize request — pinned so the mint
+		// (now, or after a second factor) uses exactly these and nothing a later
+		// request could supply.
+		p := fedResumeParams{
+			ClientId:            st.ClientId,
+			RedirectUri:         st.RedirectUri,
+			AppState:            st.AppState,
+			Scope:               st.Scope,
+			AppNonce:            st.AppNonce,
+			CodeChallenge:       st.CodeChallenge,
+			CodeChallengeMethod: st.CodeChallengeMethod,
+			Resource:            st.Resource,
+		}
+
+		// Second-factor gate: a federated login must NOT skip the factor a password
+		// login would demand (the MFA gate, mfa_gate.go). If the resolved user owes a
+		// factor, mint NOTHING here — park the resume, bound to the user and these
+		// pinned params, and send the browser to the hosted 2FA page.
+		org, err := store.GetOrganizationByName(ctx, db, user.Owner)
+		if err != nil {
+			return fedErrorRedirect(c, st, "server_error", "")
+		}
+		if factor.Prompt(org, user) {
+			// The organization requires a factor this federated user has not enrolled;
+			// a federated login cannot enroll one inline, so it fails closed.
+			return fedErrorRedirect(c, st, "access_denied", "two-factor authentication must be set up before signing in")
+		}
+		if factor.Enabled(user) && !remembered(user, now) {
+			return federationChallenge(c, db, st, user, p, now)
+		}
+
+		// No second factor owed — complete exactly as before, through the one mint.
+		loc, err := federationMint(ctx, db, app, user, p, now)
+		if err != nil {
+			return fedMintErrorRedirect(c, st, err)
+		}
+		return c.Redirect(302, loc)
+	}
+}
+
+// fedResumeParams is the ORIGINAL iam2 authorize request, pinned server-side so
+// the code minted after a federated login (immediately, or after a second factor)
+// binds to exactly these values — never to anything a later request supplies.
+type fedResumeParams struct {
+	ClientId            string `json:"clientId"`
+	RedirectUri         string `json:"redirectUri"`
+	AppState            string `json:"appState"`
+	Scope               string `json:"scope"`
+	AppNonce            string `json:"appNonce"`
+	CodeChallenge       string `json:"codeChallenge"`
+	CodeChallengeMethod string `json:"codeChallengeMethod"`
+	Resource            string `json:"resource"`
+}
+
+// errPKCERequired is the one distinguished mint error a caller maps to an OAuth
+// invalid_request; every other mint failure is an opaque server_error.
+var errPKCERequired = errors.New("federation: PKCE is required for public clients")
+
+// federationMint mints iam2's own authorization code — the SAME artifact a
+// password login mints — bound to the pinned app-leg PKCE, redirect_uri and nonce,
+// and returns the RP redirect (redirect_uri?code&state). It is the ONE mint path
+// both the no-factor completion and the post-2FA resume reach, so a federated code
+// can never be minted two different ways.
+func federationMint(ctx context.Context, db orm.DB, app *schema.Application, user *schema.User, p fedResumeParams, now time.Time) (string, error) {
+	// A public client must have carried a PKCE challenge, re-asserted at the mint so
+	// a minted code is never redeemable without proof.
+	if app.ClientSecret == "" && p.CodeChallenge == "" {
+		return "", errPKCERequired
+	}
+	userID := user.Owner + "/" + user.Name
+	codeRow, err := MintCode(app, userID, p.Scope, p.CodeChallenge, p.CodeChallengeMethod, p.Resource, now)
+	if err != nil {
+		return "", err
+	}
+	codeRow.RedirectUri = p.RedirectUri
+	codeRow.Nonce = p.AppNonce
+	if err := store.PersistToken(ctx, db, codeRow); err != nil {
+		return "", err
+	}
+	v := url.Values{}
+	v.Set("code", codeRow.Code)
+	setIfPresent(v, "state", p.AppState)
+	return joinQuery(p.RedirectUri, v), nil
+}
+
+// federationChallenge parks a resolved-but-not-yet-second-factored federated login.
+// The pending state IS a LoginChallenge (KindFederation) — the same single-use,
+// expiring, subject-pinned lifecycle the password MFA gate uses, so there is ONE
+// challenge concept — carrying the resume params as its payload. The browser is
+// sent to the hosted 2FA page; the challenge id rides the httpOnly cookie, never a
+// URL segment.
+func federationChallenge(c *zip.Ctx, db orm.DB, st *schema.FederationState, user *schema.User, p fedResumeParams, now time.Time) error {
+	payload, err := json.Marshal(p)
+	if err != nil {
+		return fedErrorRedirect(c, st, "server_error", "")
+	}
+	id, err := MintChallenge(c.Context(), db, KindFederation, user.Owner+"/"+user.Name, string(payload), now)
+	if err != nil {
+		return fedErrorRedirect(c, st, "server_error", "")
+	}
+	SetChallenge(c, id)
+	return c.Redirect(302, federationBaseURL(c)+PathMfaVerify)
+}
+
+// fedMintErrorRedirect maps a federationMint error to the RP redirect_uri.
+func fedMintErrorRedirect(c *zip.Ctx, st *schema.FederationState, err error) error {
+	if err == errPKCERequired {
+		return fedErrorRedirect(c, st, "invalid_request", "PKCE is required for public clients")
+	}
+	return fedErrorRedirect(c, st, "server_error", "")
+}
+
+// linkOrProvision resolves the local identity for a verified federated login,
+// PROVISION-DON'T-PROMOTE: (1) an account already linked to this provider
+// subject, else (2) an existing account matched by a VERIFIED IdP email (linked
+// now), else (3) a freshly provisioned account. It NEVER sets isAdmin and never
+// grants an existing account anything — federation only authenticates.
+func linkOrProvision(ctx context.Context, db orm.DB, app *schema.Application, prov *schema.Provider, id federatedIdentity) (*schema.User, error) {
+	// Innermost guard on the mint itself: never provision/link a federated identity
+	// into a reserved system org (SuperAdmin) or a tenant this app may not serve.
+	// This layer assumes the two before it (app-write authorization + the begin/
+	// callback checks) both failed.
+	if !federationOrgAllowed(app) {
+		return nil, errors.New("federation: provisioning into this organization is not permitted")
+	}
+	org := app.Organization
+	binding, ok := connectorFor(prov.Type)
+	if !ok {
+		return nil, errors.New("federation: provider has no local identity binding")
+	}
+
+	// 1. Already linked by the provider's stable subject — the authoritative match
+	// for a returning federated user (immune to email churn/ambiguity).
+	if u, err := store.GetUserByConnector(ctx, db, org, binding.field, id.subject); err != nil {
+		return nil, err
+	} else if u != nil {
+		return u, nil
+	}
+
+	// 2. Link to an existing account ONLY on a VERIFIED IdP email. An unverified
+	// email never links (it would let an unproven address take over an account).
+	if id.emailVerified && id.email != "" {
+		if u, err := store.GetUserByEmail(ctx, db, org, id.email); err != nil {
+			return nil, err
+		} else if u != nil {
+			*binding.ref(u) = id.subject
+			u.EmailVerified = true
+			if err := saveUser(ctx, db, u); err != nil {
+				return nil, err
+			}
+			return u, nil
+		}
+	}
+
+	// 3. Provision a fresh account. Federated accounts carry NO password (the
+	// digest stays empty, so password login fails closed) and are never admin.
+	return provisionFederatedUser(ctx, db, app, prov, binding, id)
+}
+
+// provisionFederatedUser creates a new federated account through the ONE
+// canonical user-create path (users.Create, no password → no login-able digest),
+// stamping the provider subject on its connector column. The username is
+// system-generated and collision-checked; the email's verified flag is carried
+// straight from the IdP.
+func provisionFederatedUser(ctx context.Context, db orm.DB, app *schema.Application, prov *schema.Provider, binding connectorBinding, id federatedIdentity) (*schema.User, error) {
+	org := app.Organization
+	for attempt := 0; attempt < 4; attempt++ {
+		name := federatedUsername(id.email, prov.Type)
+		taken, err := userExists(ctx, db, org, name)
+		if err != nil {
+			return nil, err
+		}
+		if taken {
+			continue
+		}
+		u := schema.User{
+			Owner:             org,
+			Name:              name,
+			Type:              "normal-user",
+			DisplayName:       firstNonEmpty(id.displayName, name),
+			Email:             id.email,
+			EmailVerified:     id.emailVerified,
+			Avatar:            id.avatar,
+			SignupApplication: app.Name,
+			RegisterType:      "Federation",
+			RegisterSource:    org + "/" + prov.Name,
+		}
+		*binding.ref(&u) = id.subject
+		return users.New(db).Create(ctx, &users.CreateInput{User: u})
+	}
+	return nil, errors.New("federation: could not allocate a unique username")
+}
+
+// federationProvider resolves the app's ProviderItem named name to its shared
+// Provider record, requiring the link to be sign-in-enabled and configured with
+// real credentials — otherwise the request never dead-ends at the IdP.
+func federationProvider(app *schema.Application, name string) *schema.Provider {
+	if name == "" {
+		return nil
+	}
+	for _, it := range app.Providers {
+		if it == nil || it.Name != name || !it.CanSignIn || it.Provider == nil {
+			continue
+		}
+		if !isConfigured(it.Provider) {
+			continue
+		}
+		return it.Provider
+	}
+	return nil
+}
+
+// providerOwner is the Provider record's owner, defaulting to the admin org where
+// providers are seeded.
+func providerOwner(p *schema.Provider) string {
+	if p.Owner != "" {
+		return p.Owner
+	}
+	return "admin"
+}
+
+// federationCallbackURL is the iam2 callback iam2 registers with the IdP and
+// re-presents at the token exchange. It is PINNED from config, never steered by a
+// request header, so an attacker cannot redirect the IdP leg via X-Forwarded-Host.
+func federationCallbackURL(c *zip.Ctx) string {
+	return federationBaseURL(c) + PathFederationCallback
+}
+
+// federationBaseURL is the pinned public origin the IdP callback is registered
+// under. In production it is the IAM_ISSUER pin (required — HIP-0112) so the
+// value is fixed and header-immune. Where IAM_ISSUER is unset (dev), it falls
+// back to the DIRECT Host header — NEVER httpx.EffectiveHost, which honors the
+// attacker-suppliable X-Forwarded-Host — so even the dev path cannot be steered
+// to an attacker origin.
+func federationBaseURL(c *zip.Ctx) string {
+	if iss := strings.TrimSpace(os.Getenv("IAM_ISSUER")); iss != "" {
+		return strings.TrimRight(iss, "/")
+	}
+	if h := strings.TrimSpace(c.Header("Host")); h != "" {
+		return "https://" + h
+	}
+	return "https://hanzo.id"
+}
+
+// federationOrgAllowed reports whether a federated (external) identity may be
+// provisioned or linked into the application's Organization. Two invariants,
+// both fail-closed:
+//
+//  1. NEVER a reserved system org (admin/built-in/app). A social sign-in that
+//     landed a user in the admin org would make that user a SuperAdmin — the
+//     critical escalation. Federation is customer sign-in; system orgs are seeded
+//     / onboarded / SuperAdmin-managed, never reached by an external login.
+//  2. Tenant legitimacy. A platform app (admin/built-in-owned, and thus only
+//     SuperAdmin-creatable) may serve any non-reserved tenant. A tenant-registered
+//     app may only land users in the org it legitimately serves — its OWN org, a
+//     shared app, or one with an explicit org-choice mode — mirroring the
+//     login/signup tenant gate, so an attacker-owned app cannot mint or link
+//     identities into a victim tenant.
+//
+// This is defense in depth behind the application-write authorization (authz
+// authorizes the Organization field on create/update); this layer assumes that
+// one was bypassed and still refuses the escalation.
+func federationOrgAllowed(app *schema.Application) bool {
+	org := strings.TrimSpace(app.Organization)
+	if org == "" || reservedOrgs[org] {
+		return false
+	}
+	if store.IsSigningCertOwner(app.Owner) {
+		return true // platform app — SuperAdmin-configured, may serve any tenant
+	}
+	if app.IsShared || app.OrgChoiceMode != "" {
+		return true
+	}
+	return org == app.Owner
+}
+
+// fedSuccessRedirect returns the browser to the relying party's redirect_uri with
+// the iam2 authorization code and the original app state (RFC 6749 §4.1.2).
+func fedSuccessRedirect(c *zip.Ctx, st *schema.FederationState, code string) error {
+	v := url.Values{}
+	v.Set("code", code)
+	setIfPresent(v, "state", st.AppState)
+	return c.Redirect(302, joinQuery(st.RedirectUri, v))
+}
+
+// fedErrorRedirect returns an OAuth error to the relying party's redirect_uri
+// (already allow-list-validated) with the original app state.
+func fedErrorRedirect(c *zip.Ctx, st *schema.FederationState, code, desc string) error {
+	v := url.Values{}
+	v.Set("error", code)
+	setIfPresent(v, "error_description", desc)
+	setIfPresent(v, "state", st.AppState)
+	return c.Redirect(302, joinQuery(st.RedirectUri, v))
+}
+
+// setBindCookie writes the per-transaction anti-forgery cookie: HttpOnly + Secure,
+// SameSite=Lax (so it IS sent on the IdP's top-level GET back to the callback),
+// scoped to the callback path, expiring with the transaction.
+func setBindCookie(c *zip.Ctx, value string) {
+	c.Fiber().Cookie(&fiber.Cookie{
+		Name:     fedCookieName,
+		Value:    value,
+		Path:     PathFederationCallback,
+		MaxAge:   int(fedStateTTL / time.Second),
+		Secure:   true,
+		HTTPOnly: true,
+		SameSite: fiber.CookieSameSiteLaxMode,
+	})
+}
+
+// readBindCookie returns the anti-forgery cookie value, or "" when absent.
+func readBindCookie(c *zip.Ctx) string { return c.Fiber().Cookies(fedCookieName) }
+
+// clearBindCookie expires the anti-forgery cookie once the transaction is
+// consumed, so it can never be replayed.
+func clearBindCookie(c *zip.Ctx) {
+	c.Fiber().Cookie(&fiber.Cookie{
+		Name:     fedCookieName,
+		Value:    "",
+		Path:     PathFederationCallback,
+		MaxAge:   -1,
+		Secure:   true,
+		HTTPOnly: true,
+		SameSite: fiber.CookieSameSiteLaxMode,
+	})
+}
+
+// connectorBinding ties a provider type to the User's per-connector identity
+// column: the EXACT lowercase orm/json field name to filter on and a pointer
+// accessor to read/set the stored subject.
+type connectorBinding struct {
+	field string
+	ref   func(*schema.User) *string
+}
+
+// connectorRegistry maps a provider Type to its User connector column. The field
+// name is the EXACT json/orm name (already lowercase): orm's filter lowercases
+// only the FIRST rune, so a Go field name like "GitHub" would query '$.gitHub'
+// (the tag is 'github') — passing the exact json name is the one correct way, and
+// this registry is its single source of truth. Only the connectors iam2 can
+// federate are listed; anything else fails closed.
+var connectorRegistry = map[string]connectorBinding{
+	"google":          {"google", func(u *schema.User) *string { return &u.Google }},
+	"github":          {"github", func(u *schema.User) *string { return &u.GitHub }},
+	"gitlab":          {"gitlab", func(u *schema.User) *string { return &u.Gitlab }},
+	"gitee":           {"gitee", func(u *schema.User) *string { return &u.Gitee }},
+	"bitbucket":       {"bitbucket", func(u *schema.User) *string { return &u.Bitbucket }},
+	"facebook":        {"facebook", func(u *schema.User) *string { return &u.Facebook }},
+	"apple":           {"apple", func(u *schema.User) *string { return &u.Apple }},
+	"linkedin":        {"linkedin", func(u *schema.User) *string { return &u.LinkedIn }},
+	"discord":         {"discord", func(u *schema.User) *string { return &u.Discord }},
+	"slack":           {"slack", func(u *schema.User) *string { return &u.Slack }},
+	"okta":            {"okta", func(u *schema.User) *string { return &u.Okta }},
+	"azuread":         {"azuread", func(u *schema.User) *string { return &u.AzureAD }},
+	"microsoftonline": {"microsoftonline", func(u *schema.User) *string { return &u.MicrosoftOnline }},
+}
+
+// connectorFor resolves the connector binding for a provider type (case-folded),
+// or (zero, false) when the type has no local identity column.
+func connectorFor(providerType string) (connectorBinding, bool) {
+	b, ok := connectorRegistry[strings.ToLower(strings.TrimSpace(providerType))]
+	return b, ok
+}
+
+// federatedUsername generates a valid, human-friendly, collision-resistant
+// username for a provisioned account: the email local-part (or provider name)
+// sanitized to a handle, guaranteed to start with a letter (so it passes the
+// username policy), plus a random suffix so concurrent provisions never collide.
+func federatedUsername(email, providerType string) string {
+	base := ""
+	if at := strings.IndexByte(email, '@'); at > 0 {
+		base = email[:at]
+	}
+	base = sanitizeHandle(base)
+	if base == "" {
+		base = sanitizeHandle(providerType)
+	}
+	if base == "" {
+		base = "user"
+	}
+	if base[0] < 'a' || base[0] > 'z' {
+		base = "u" + base
+	}
+	return base + "-" + randHex(4)
+}
+
+// randHex returns 2n lowercase hex chars of cryptographic randomness.
+func randHex(n int) string {
+	b := make([]byte, n)
+	_, _ = rand.Read(b)
+	return hex.EncodeToString(b)
+}
+
+// sanitizeHandle reduces s to a lowercase [a-z0-9._-] handle, capped at 24 chars.
+func sanitizeHandle(s string) string {
+	s = strings.ToLower(strings.TrimSpace(s))
+	out := make([]byte, 0, len(s))
+	for i := 0; i < len(s); i++ {
+		ch := s[i]
+		if (ch >= 'a' && ch <= 'z') || (ch >= '0' && ch <= '9') || ch == '.' || ch == '_' || ch == '-' {
+			out = append(out, ch)
+		}
+	}
+	if len(out) > 24 {
+		out = out[:24]
+	}
+	return string(out)
+}

internal/oidc/federation_idp.go

@@ -0,0 +1,749 @@
+// Copyright 2026 Hanzo AI, Inc. All rights reserved.
+
+package oidc
+
+import (
+	"context"
+	"crypto/ecdsa"
+	"crypto/elliptic"
+	"crypto/rsa"
+	"crypto/subtle"
+	"encoding/base64"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"io"
+	"math/big"
+	"net"
+	"net/http"
+	"net/url"
+	"strconv"
+	"strings"
+	"syscall"
+	"time"
+
+	"github.com/golang-jwt/jwt/v5"
+
+	"github.com/hanzoai/iam/internal/schema"
+)
+
+// The Relying-Party side of federation: iam2 as an OIDC/OAuth2 CLIENT of an
+// external identity provider. Two dialects, one contract (federatedIdentity):
+//
+//   - OIDC (Google + any provider with an IssuerUrl): OIDC Discovery resolves the
+//     endpoints and JWKS; the end user is authenticated by the id_token, whose
+//     SIGNATURE (against the published JWKS), issuer, audience, expiry, and nonce
+//     are all verified before a single claim is trusted. email_verified is read
+//     from the signed token.
+//   - GitHub (OAuth2, no id_token): the code is exchanged for an access token,
+//     then the user + verified-email endpoints are read. Only a GitHub-verified,
+//     primary email is treated as verified.
+//
+// Every outbound call is hardened: a bounded-timeout client that never follows
+// redirects (a 3xx on a token/JWKS endpoint is answered as a failure, not
+// chased), a response-body size cap, an https-except-loopback URL guard, and
+// alg-pinned JWT verification (RS/ES only — never `none`, never an HMAC that a
+// public key could be abused as the secret for). No secret or token is logged.
+
+// federatedIdentity is the VERIFIED identity an external IdP asserts about the
+// end user — the only thing the broker trusts out of the round-trip. Subject is
+// the IdP's stable, opaque user id (the connector-column value); Email is linked
+// against a local account ONLY when EmailVerified is true.
+type federatedIdentity struct {
+	subject       string
+	email         string
+	emailVerified bool
+	displayName   string
+	avatar        string
+}
+
+// federationHTTPClient is the hardened client every IdP call rides. The timeout
+// bounds a slow/hostile IdP; CheckRedirect refuses to chase a redirect (an IdP
+// token/userinfo/JWKS endpoint answering 3xx is a fault, not a hop), closing the
+// SSRF-via-redirect vector; and the dialer Control refuses to connect to a
+// private/loopback/link-local/metadata address AT DIAL TIME — after DNS
+// resolution, on the ACTUAL connecting IP — so a hostile IssuerUrl/Custom*Url (or
+// a DNS-rebinding hostname) cannot make iam2 reach an internal service or the
+// cloud metadata endpoint.
+var federationHTTPClient = &http.Client{
+	Timeout: 12 * time.Second,
+	CheckRedirect: func(_ *http.Request, _ []*http.Request) error {
+		return http.ErrUseLastResponse
+	},
+	Transport: &http.Transport{
+		DialContext: (&net.Dialer{
+			Timeout:   10 * time.Second,
+			KeepAlive: 30 * time.Second,
+			Control:   federationDialControl,
+		}).DialContext,
+		TLSHandshakeTimeout:   8 * time.Second,
+		ResponseHeaderTimeout: 10 * time.Second,
+		MaxIdleConns:          8,
+		IdleConnTimeout:       30 * time.Second,
+	},
+}
+
+// federationDialAllowsPrivate relaxes the SSRF dial guard to permit
+// private/loopback addresses. It is a TEST SEAM ONLY (the mock IdPs bind to
+// 127.0.0.1); production code never sets it, so the guard is always fully armed
+// in a real deployment.
+var federationDialAllowsPrivate = false
+
+// federationDialControl is the net.Dialer.Control hook: it inspects the resolved
+// address every connection actually dials and refuses a private, loopback,
+// link-local, ULA, unspecified, multicast, or CGNAT target — the SSRF gate that a
+// literal-URL check cannot provide because it sees the post-DNS IP (defeating
+// DNS-rebinding). Fails closed on an unparseable address.
+func federationDialControl(_, address string, _ syscall.RawConn) error {
+	if federationDialAllowsPrivate {
+		return nil
+	}
+	host, _, err := net.SplitHostPort(address)
+	if err != nil {
+		return errors.New("federation: refusing an unparseable dial address")
+	}
+	ip := net.ParseIP(host)
+	if ip == nil {
+		return errors.New("federation: dial host did not resolve to an IP")
+	}
+	if ipBlockedForFederation(ip) {
+		return errors.New("federation: refusing to dial a private/loopback/link-local address")
+	}
+	return nil
+}
+
+// ipBlockedForFederation reports whether an IP is in a range iam2 must never
+// fetch from during federation. net.IP.IsPrivate covers RFC1918 and IPv6 ULA
+// (fc00::/7); IsLinkLocalUnicast covers 169.254.0.0/16 (incl. the 169.254.169.254
+// cloud-metadata address) and fe80::/10.
+func ipBlockedForFederation(ip net.IP) bool {
+	return ip.IsLoopback() || ip.IsPrivate() || ip.IsUnspecified() ||
+		ip.IsLinkLocalUnicast() || ip.IsLinkLocalMulticast() ||
+		ip.IsInterfaceLocalMulticast() || ip.IsMulticast() || isCGNAT(ip)
+}
+
+// isCGNAT reports whether ip is in 100.64.0.0/10 (carrier-grade NAT), a shared
+// range net.IP.IsPrivate does not cover.
+func isCGNAT(ip net.IP) bool {
+	v4 := ip.To4()
+	return v4 != nil && v4[0] == 100 && v4[1] >= 64 && v4[1] <= 127
+}
+
+// maxIdPBodyBytes caps every IdP response read — a hostile or broken IdP cannot
+// exhaust memory (discovery/JWKS/token/userinfo are all a few KB).
+const maxIdPBodyBytes = 1 << 20 // 1 MiB
+
+// defaultGoogleIssuer is the OIDC issuer for a Google provider that pins none of
+// its own — the value the id_token carries as `iss` and the discovery origin.
+const defaultGoogleIssuer = "https://accounts.google.com"
+
+// GitHub's fixed OAuth2 endpoints (overridable per-Provider for GitHub
+// Enterprise / tests via Custom{Auth,Token,UserInfo}Url).
+const (
+	githubAuthorizeEndpoint = "https://github.com/login/oauth/authorize"
+	githubTokenEndpoint     = "https://github.com/login/oauth/access_token"
+	githubUserEndpoint      = "https://api.github.com/user"
+)
+
+// idpKind classifies a provider into its federation dialect. A provider with an
+// explicit OIDC issuer — or Google — is OIDC; GitHub is OAuth2+userinfo.
+// Anything else is unsupported and fails closed (""), never guessed.
+func idpKind(p *schema.Provider) string {
+	switch {
+	case strings.EqualFold(p.Type, "GitHub"):
+		return "github"
+	case strings.EqualFold(p.Type, "Google") || strings.TrimSpace(p.IssuerUrl) != "":
+		return "oidc"
+	default:
+		return ""
+	}
+}
+
+// idpAuthorizeURL builds the IdP authorization-endpoint URL the browser is sent
+// to at the begin leg — dialect-dispatched, with iam2's callback as the IdP
+// redirect_uri, our single-use state, IdP-leg PKCE, and (OIDC) the nonce.
+func idpAuthorizeURL(ctx context.Context, p *schema.Provider, st *schema.FederationState, callback string) (string, error) {
+	switch idpKind(p) {
+	case "oidc":
+		cfg, err := oidcResolve(ctx, p)
+		if err != nil {
+			return "", err
+		}
+		return oidcAuthorizeURL(cfg, p, st, callback), nil
+	case "github":
+		return githubAuthorizeURL(p, st, callback), nil
+	default:
+		return "", fmt.Errorf("federation: provider %q is not a supported federation type", p.Name)
+	}
+}
+
+// idpExchange completes the callback leg: it exchanges the IdP authorization
+// code and returns the VERIFIED identity, or an error if any verification fails.
+func idpExchange(ctx context.Context, p *schema.Provider, st *schema.FederationState, code, callback string, now time.Time) (federatedIdentity, error) {
+	switch idpKind(p) {
+	case "oidc":
+		cfg, err := oidcResolve(ctx, p)
+		if err != nil {
+			return federatedIdentity{}, err
+		}
+		return oidcExchange(ctx, cfg, p, st, code, callback, now)
+	case "github":
+		return githubExchange(ctx, p, st, code, callback)
+	default:
+		return federatedIdentity{}, fmt.Errorf("federation: provider %q is not a supported federation type", p.Name)
+	}
+}
+
+// --- OIDC dialect (Google + any IssuerUrl provider) ---
+
+// oidcConfig is the resolved OIDC endpoint set for a provider.
+type oidcConfig struct {
+	issuer   string
+	authURL  string
+	tokenURL string
+	jwksURL  string
+}
+
+// oidcResolve determines the issuer and runs OIDC Discovery to fill the endpoint
+// set. A per-Provider Custom{Auth,Token}Url overrides the discovered
+// authorize/token endpoint (a provider that publishes discovery but pins a
+// vanity endpoint); the JWKS URI always comes from the signed discovery document
+// so id_token verification keys are never attacker-chosen.
+func oidcResolve(ctx context.Context, p *schema.Provider) (oidcConfig, error) {
+	issuer := strings.TrimRight(strings.TrimSpace(p.IssuerUrl), "/")
+	if issuer == "" && strings.EqualFold(p.Type, "Google") {
+		issuer = defaultGoogleIssuer
+	}
+	if issuer == "" {
+		return oidcConfig{}, errors.New("federation: OIDC provider has no issuerUrl")
+	}
+	disco, err := oidcDiscover(ctx, issuer)
+	if err != nil {
+		return oidcConfig{}, err
+	}
+	cfg := oidcConfig{
+		issuer:   issuer,
+		authURL:  disco.AuthorizationEndpoint,
+		tokenURL: disco.TokenEndpoint,
+		jwksURL:  disco.JwksURI,
+	}
+	if v := strings.TrimSpace(p.CustomAuthUrl); v != "" {
+		cfg.authURL = v
+	}
+	if v := strings.TrimSpace(p.CustomTokenUrl); v != "" {
+		cfg.tokenURL = v
+	}
+	if cfg.authURL == "" || cfg.tokenURL == "" || cfg.jwksURL == "" {
+		return oidcConfig{}, errors.New("federation: OIDC discovery is missing required endpoints")
+	}
+	return cfg, nil
+}
+
+// oidcDiscoveryDocument is the subset of the OIDC Discovery document iam2 reads.
+type oidcDiscoveryDocument struct {
+	Issuer                string `json:"issuer"`
+	AuthorizationEndpoint string `json:"authorization_endpoint"`
+	TokenEndpoint         string `json:"token_endpoint"`
+	UserinfoEndpoint      string `json:"userinfo_endpoint"`
+	JwksURI               string `json:"jwks_uri"`
+}
+
+// oidcDiscover fetches and validates the issuer's discovery document. The
+// document's own `issuer` MUST equal the configured issuer (OIDC Discovery §4.3)
+// — a mismatch means the origin is impersonating another issuer, so it fails
+// closed.
+func oidcDiscover(ctx context.Context, issuer string) (oidcDiscoveryDocument, error) {
+	var doc oidcDiscoveryDocument
+	if err := getJSON(ctx, issuer+"/.well-known/openid-configuration", &doc); err != nil {
+		return doc, err
+	}
+	if strings.TrimRight(doc.Issuer, "/") != strings.TrimRight(issuer, "/") {
+		return oidcDiscoveryDocument{}, fmt.Errorf("federation: discovery issuer mismatch")
+	}
+	return doc, nil
+}
+
+// oidcAuthorizeURL builds the OIDC authorization request: response_type=code,
+// the app-or-default scope, our callback, the single-use state, S256 PKCE, and
+// the nonce that the returned id_token must echo.
+func oidcAuthorizeURL(cfg oidcConfig, p *schema.Provider, st *schema.FederationState, callback string) string {
+	v := url.Values{}
+	v.Set("response_type", "code")
+	v.Set("client_id", p.ClientId)
+	v.Set("redirect_uri", callback)
+	// The OIDC leg MUST request openid, or the IdP returns no id_token and the
+	// exchange fails closed — force it in even if the provider's configured scopes
+	// omit it, so a scope misconfiguration can never silently disable verification.
+	v.Set("scope", ensureOpenID(providerScopes(p, "openid email profile")))
+	v.Set("state", st.Name)
+	v.Set("nonce", st.IdpNonce)
+	v.Set("code_challenge", ComputeS256Challenge(st.IdpVerifier))
+	v.Set("code_challenge_method", "S256")
+	return joinQuery(cfg.authURL, v)
+}
+
+// oidcTokenResponse is the token-endpoint response the OIDC exchange reads.
+type oidcTokenResponse struct {
+	AccessToken string `json:"access_token"`
+	IDToken     string `json:"id_token"`
+	TokenType   string `json:"token_type"`
+}
+
+// oidcExchange redeems the code at the token endpoint (proving the IdP-leg PKCE
+// verifier), then VERIFIES the id_token — signature against the discovered JWKS,
+// issuer, audience (== our client id), expiry, and nonce — before trusting any
+// claim. The identity comes from the signed id_token, never from an unverified
+// userinfo body.
+func oidcExchange(ctx context.Context, cfg oidcConfig, p *schema.Provider, st *schema.FederationState, code, callback string, now time.Time) (federatedIdentity, error) {
+	form := url.Values{}
+	form.Set("grant_type", "authorization_code")
+	form.Set("code", code)
+	form.Set("redirect_uri", callback)
+	form.Set("client_id", p.ClientId)
+	form.Set("client_secret", p.ClientSecret)
+	form.Set("code_verifier", st.IdpVerifier)
+
+	var tr oidcTokenResponse
+	if err := postFormJSON(ctx, cfg.tokenURL, form, nil, &tr); err != nil {
+		return federatedIdentity{}, err
+	}
+	if tr.IDToken == "" {
+		return federatedIdentity{}, errors.New("federation: OIDC token response carried no id_token")
+	}
+	claims, err := verifyIDToken(ctx, tr.IDToken, cfg.jwksURL, cfg.issuer, p.ClientId, st.IdpNonce, now)
+	if err != nil {
+		return federatedIdentity{}, err
+	}
+	return federatedIdentity{
+		subject:       claims.Subject,
+		email:         strings.ToLower(strings.TrimSpace(claims.Email)),
+		emailVerified: truthy(claims.EmailVerified),
+		displayName:   claims.Name,
+		avatar:        claims.Picture,
+	}, nil
+}
+
+// idTokenClaims is the id_token claim set iam2 reads. Nonce is a top-level OIDC
+// claim (not a registered JWT claim), verified against the transaction's stored
+// nonce. email_verified is `any` because providers send it as a JSON bool or
+// (legacy) the string "true".
+type idTokenClaims struct {
+	jwt.RegisteredClaims
+	Nonce         string `json:"nonce"`
+	Email         string `json:"email"`
+	EmailVerified any    `json:"email_verified"`
+	Name          string `json:"name"`
+	Picture       string `json:"picture"`
+}
+
+// verifyIDToken parses and fully validates an id_token. The signing method is
+// PINNED to the asymmetric set (RS/ES) so a `none` token or an HMAC-with-public-
+// key confusion attack is rejected outright; the key comes from the issuer's
+// JWKS, selected by `kid`; issuer, audience, and expiry are enforced by the
+// parser (now is injected for testability); and the nonce is compared in
+// constant time. A subject-less token is refused.
+func verifyIDToken(ctx context.Context, idToken, jwksURL, issuer, audience, nonce string, now time.Time) (idTokenClaims, error) {
+	var claims idTokenClaims
+	tok, err := jwt.ParseWithClaims(idToken, &claims, jwksKeyfunc(ctx, jwksURL),
+		jwt.WithValidMethods([]string{"RS256", "RS384", "RS512", "ES256", "ES384", "ES512"}),
+		jwt.WithIssuer(issuer),
+		jwt.WithAudience(audience),
+		jwt.WithExpirationRequired(),
+		jwt.WithTimeFunc(func() time.Time { return now }),
+	)
+	if err != nil || !tok.Valid {
+		return idTokenClaims{}, fmt.Errorf("federation: id_token verification failed")
+	}
+	if subtle.ConstantTimeCompare([]byte(claims.Nonce), []byte(nonce)) != 1 {
+		return idTokenClaims{}, errors.New("federation: id_token nonce mismatch")
+	}
+	if strings.TrimSpace(claims.Subject) == "" {
+		return idTokenClaims{}, errors.New("federation: id_token has no subject")
+	}
+	return claims, nil
+}
+
+// --- GitHub dialect (OAuth2 + userinfo) ---
+
+// githubAuthorizeURL builds GitHub's OAuth2 authorization request. GitHub OAuth
+// Apps support neither PKCE nor a nonce, so the single-use, browser-bound state
+// carries the CSRF defense; PKCE is added only when the provider opts in
+// (EnablePkce) for a compatible deployment.
+func githubAuthorizeURL(p *schema.Provider, st *schema.FederationState, callback string) string {
+	v := url.Values{}
+	v.Set("client_id", p.ClientId)
+	v.Set("redirect_uri", callback)
+	v.Set("scope", providerScopes(p, "read:user user:email"))
+	v.Set("state", st.Name)
+	v.Set("allow_signup", "true")
+	if p.EnablePkce {
+		v.Set("code_challenge", ComputeS256Challenge(st.IdpVerifier))
+		v.Set("code_challenge_method", "S256")
+	}
+	return joinQuery(firstNonEmpty(p.CustomAuthUrl, githubAuthorizeEndpoint), v)
+}
+
+// githubTokenResponse is GitHub's (JSON, via Accept) token response.
+type githubTokenResponse struct {
+	AccessToken string `json:"access_token"`
+	TokenType   string `json:"token_type"`
+	Scope       string `json:"scope"`
+	Error       string `json:"error"`
+}
+
+// githubUser / githubEmail are the userinfo shapes iam2 reads.
+type githubUser struct {
+	ID        int64  `json:"id"`
+	Login     string `json:"login"`
+	Name      string `json:"name"`
+	Email     string `json:"email"`
+	AvatarURL string `json:"avatar_url"`
+}
+
+type githubEmail struct {
+	Email    string `json:"email"`
+	Primary  bool   `json:"primary"`
+	Verified bool   `json:"verified"`
+}
+
+// githubExchange redeems the code for an access token, then reads the user and
+// the verified-email list. The subject is GitHub's immutable numeric id; an
+// email is treated as verified ONLY when GitHub reports it verified (primary
+// preferred), so a local account is never linked to an unproven address.
+func githubExchange(ctx context.Context, p *schema.Provider, st *schema.FederationState, code, callback string) (federatedIdentity, error) {
+	form := url.Values{}
+	form.Set("grant_type", "authorization_code")
+	form.Set("code", code)
+	form.Set("redirect_uri", callback)
+	form.Set("client_id", p.ClientId)
+	form.Set("client_secret", p.ClientSecret)
+	if p.EnablePkce {
+		form.Set("code_verifier", st.IdpVerifier)
+	}
+
+	var tr githubTokenResponse
+	if err := postFormJSON(ctx, firstNonEmpty(p.CustomTokenUrl, githubTokenEndpoint), form, http.Header{"Accept": {"application/json"}}, &tr); err != nil {
+		return federatedIdentity{}, err
+	}
+	if tr.Error != "" || tr.AccessToken == "" {
+		return federatedIdentity{}, errors.New("federation: GitHub token exchange failed")
+	}
+
+	userURL := firstNonEmpty(p.CustomUserInfoUrl, githubUserEndpoint)
+	var gu githubUser
+	if err := getJSONBearer(ctx, userURL, tr.AccessToken, &gu); err != nil {
+		return federatedIdentity{}, err
+	}
+	if gu.ID == 0 {
+		return federatedIdentity{}, errors.New("federation: GitHub user has no id")
+	}
+
+	email, verified := githubPrimaryEmail(ctx, userURL, tr.AccessToken, gu.Email)
+	name := gu.Name
+	if name == "" {
+		name = gu.Login
+	}
+	return federatedIdentity{
+		subject:       strconv.FormatInt(gu.ID, 10),
+		email:         strings.ToLower(strings.TrimSpace(email)),
+		emailVerified: verified,
+		displayName:   name,
+		avatar:        gu.AvatarURL,
+	}, nil
+}
+
+// githubPrimaryEmail resolves the address to link on: the GitHub /user/emails
+// list's primary-and-verified entry (then any verified entry). It returns
+// (email, verified); when nothing is verified it returns verified=false so the
+// broker provisions a fresh account rather than link by an unproven email. A
+// failure to read the list is not fatal — it degrades to unverified.
+func githubPrimaryEmail(ctx context.Context, userURL, token, fallback string) (string, bool) {
+	var emails []githubEmail
+	if err := getJSONBearer(ctx, strings.TrimRight(userURL, "/")+"/emails", token, &emails); err == nil {
+		var anyVerified string
+		for _, e := range emails {
+			if !e.Verified {
+				continue
+			}
+			if e.Primary {
+				return e.Email, true
+			}
+			if anyVerified == "" {
+				anyVerified = e.Email
+			}
+		}
+		if anyVerified != "" {
+			return anyVerified, true
+		}
+	}
+	// No verified address available — the profile email is unproven.
+	return fallback, false
+}
+
+// --- hardened HTTP + JWKS ---
+
+// getJSON GETs a URL and decodes a JSON body, with the safety guard, a 200-only
+// contract, and a body-size cap.
+func getJSON(ctx context.Context, rawURL string, out any) error {
+	req, err := newIdPRequest(ctx, http.MethodGet, rawURL, nil, nil)
+	if err != nil {
+		return err
+	}
+	return doJSON(req, out)
+}
+
+// getJSONBearer GETs a bearer-authenticated JSON endpoint (GitHub userinfo).
+func getJSONBearer(ctx context.Context, rawURL, token string, out any) error {
+	req, err := newIdPRequest(ctx, http.MethodGet, rawURL, nil, http.Header{
+		"Authorization": {"Bearer " + token},
+		"Accept":        {"application/vnd.github+json"},
+	})
+	if err != nil {
+		return err
+	}
+	return doJSON(req, out)
+}
+
+// postFormJSON POSTs a urlencoded form and decodes a JSON body.
+func postFormJSON(ctx context.Context, rawURL string, form url.Values, header http.Header, out any) error {
+	req, err := newIdPRequest(ctx, http.MethodPost, rawURL, strings.NewReader(form.Encode()), header)
+	if err != nil {
+		return err
+	}
+	req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
+	if req.Header.Get("Accept") == "" {
+		req.Header.Set("Accept", "application/json")
+	}
+	return doJSON(req, out)
+}
+
+// newIdPRequest builds a context-bound request to a guard-checked URL with a
+// stable User-Agent and the caller's headers.
+func newIdPRequest(ctx context.Context, method, rawURL string, body io.Reader, header http.Header) (*http.Request, error) {
+	safe, err := requireSafeURL(rawURL)
+	if err != nil {
+		return nil, err
+	}
+	req, err := http.NewRequestWithContext(ctx, method, safe, body)
+	if err != nil {
+		return nil, err
+	}
+	req.Header.Set("User-Agent", "hanzo-iam2-federation")
+	for k, vs := range header {
+		for _, v := range vs {
+			req.Header.Add(k, v)
+		}
+	}
+	return req, nil
+}
+
+// doJSON executes a request and decodes a 200 JSON body under the size cap. A
+// non-200 status is a hard failure — no partial trust in an error body.
+func doJSON(req *http.Request, out any) error {
+	resp, err := federationHTTPClient.Do(req)
+	if err != nil {
+		return fmt.Errorf("federation: idp request failed")
+	}
+	defer resp.Body.Close()
+	body, err := io.ReadAll(io.LimitReader(resp.Body, maxIdPBodyBytes))
+	if err != nil {
+		return fmt.Errorf("federation: reading idp response failed")
+	}
+	if resp.StatusCode != http.StatusOK {
+		return fmt.Errorf("federation: idp returned status %d", resp.StatusCode)
+	}
+	if err := json.Unmarshal(body, out); err != nil {
+		return fmt.Errorf("federation: decoding idp response failed")
+	}
+	return nil
+}
+
+// requireSafeURL parses rawURL and enforces the transport guard: http(s) only,
+// a non-empty host, and https EXCEPT for loopback (so the production path is
+// always TLS while tests may target 127.0.0.1). This also rejects file://, and
+// any non-web scheme — an SSRF/exfiltration hygiene gate on the (admin-supplied)
+// endpoint configuration.
+func requireSafeURL(rawURL string) (string, error) {
+	u, err := url.Parse(strings.TrimSpace(rawURL))
+	if err != nil {
+		return "", fmt.Errorf("federation: invalid idp url")
+	}
+	if u.Host == "" || (u.Scheme != "http" && u.Scheme != "https") {
+		return "", fmt.Errorf("federation: idp url must be http(s) with a host")
+	}
+	if u.Scheme == "http" && !isLoopbackHost(u.Hostname()) {
+		return "", fmt.Errorf("federation: idp url must use https")
+	}
+	return u.String(), nil
+}
+
+// isLoopbackHost reports whether host is a loopback name/address.
+func isLoopbackHost(host string) bool {
+	if host == "localhost" {
+		return true
+	}
+	if ip := net.ParseIP(host); ip != nil {
+		return ip.IsLoopback()
+	}
+	return false
+}
+
+// jwkSet / jwk are the JSON Web Key Set shapes iam2 verifies id_tokens against.
+type jwkSet struct {
+	Keys []jwk `json:"keys"`
+}
+
+type jwk struct {
+	Kty string `json:"kty"`
+	Kid string `json:"kid"`
+	N   string `json:"n"`
+	E   string `json:"e"`
+	Crv string `json:"crv"`
+	X   string `json:"x"`
+	Y   string `json:"y"`
+}
+
+// jwksKeyfunc returns a jwt.Keyfunc that fetches the issuer's JWKS and selects
+// the verification key by the token's `kid`. When the token carries a kid, an
+// exact match is required; a kid-less token is accepted only against a
+// single-key set. The fetch happens inside the closure so it is bounded by the
+// same hardened client and request context.
+func jwksKeyfunc(ctx context.Context, jwksURL string) jwt.Keyfunc {
+	return func(t *jwt.Token) (any, error) {
+		var set jwkSet
+		if err := getJSON(ctx, jwksURL, &set); err != nil {
+			return nil, err
+		}
+		kid, _ := t.Header["kid"].(string)
+		if kid == "" {
+			if len(set.Keys) != 1 {
+				return nil, errors.New("federation: id_token has no kid and JWKS is not single-key")
+			}
+			return set.Keys[0].publicKey()
+		}
+		for _, k := range set.Keys {
+			if k.Kid == kid {
+				return k.publicKey()
+			}
+		}
+		return nil, errors.New("federation: no JWKS key matches the id_token kid")
+	}
+}
+
+// publicKey materializes a JWK into a crypto public key (RSA or EC). Only the
+// two families iam2 signs with are supported; any other key type is refused.
+func (k jwk) publicKey() (any, error) {
+	switch k.Kty {
+	case "RSA":
+		n, err := b64uBigInt(k.N)
+		if err != nil {
+			return nil, err
+		}
+		eb, err := base64.RawURLEncoding.DecodeString(strings.TrimRight(k.E, "="))
+		if err != nil {
+			return nil, errors.New("federation: bad JWKS RSA exponent")
+		}
+		e := 0
+		for _, b := range eb {
+			e = e<<8 | int(b)
+		}
+		if e == 0 {
+			return nil, errors.New("federation: zero JWKS RSA exponent")
+		}
+		return &rsa.PublicKey{N: n, E: e}, nil
+	case "EC":
+		curve, err := ecCurve(k.Crv)
+		if err != nil {
+			return nil, err
+		}
+		x, err := b64uBigInt(k.X)
+		if err != nil {
+			return nil, err
+		}
+		y, err := b64uBigInt(k.Y)
+		if err != nil {
+			return nil, err
+		}
+		return &ecdsa.PublicKey{Curve: curve, X: x, Y: y}, nil
+	default:
+		return nil, fmt.Errorf("federation: unsupported JWKS key type %q", k.Kty)
+	}
+}
+
+// ecCurve maps a JWK curve name to its elliptic.Curve.
+func ecCurve(crv string) (elliptic.Curve, error) {
+	switch crv {
+	case "P-256":
+		return elliptic.P256(), nil
+	case "P-384":
+		return elliptic.P384(), nil
+	case "P-521":
+		return elliptic.P521(), nil
+	default:
+		return nil, fmt.Errorf("federation: unsupported JWKS curve %q", crv)
+	}
+}
+
+// b64uBigInt decodes a base64url (unpadded) big-endian integer — the JWK
+// encoding for RSA modulus/exponent and EC coordinates.
+func b64uBigInt(s string) (*big.Int, error) {
+	b, err := base64.RawURLEncoding.DecodeString(strings.TrimRight(s, "="))
+	if err != nil {
+		return nil, errors.New("federation: bad JWKS integer encoding")
+	}
+	return new(big.Int).SetBytes(b), nil
+}
+
+// --- small shared helpers ---
+
+// providerScopes returns the provider's configured scopes, or a dialect default
+// when it configures none.
+func providerScopes(p *schema.Provider, fallback string) string {
+	if s := strings.TrimSpace(p.Scopes); s != "" {
+		return s
+	}
+	return fallback
+}
+
+// ensureOpenID guarantees the space-delimited scope contains "openid" (the OIDC
+// requirement for an id_token), prepending it when absent.
+func ensureOpenID(scope string) string {
+	for _, s := range strings.Fields(scope) {
+		if s == "openid" {
+			return scope
+		}
+	}
+	return strings.TrimSpace("openid " + scope)
+}
+
+// joinQuery appends encoded query values to a base URL, honoring an existing
+// query string.
+func joinQuery(base string, v url.Values) string {
+	sep := "?"
+	if strings.Contains(base, "?") {
+		sep = "&"
+	}
+	return base + sep + v.Encode()
+}
+
+// firstNonEmpty returns the first non-blank string.
+func firstNonEmpty(vals ...string) string {
+	for _, v := range vals {
+		if strings.TrimSpace(v) != "" {
+			return v
+		}
+	}
+	return ""
+}
+
+// truthy interprets an id_token email_verified value (bool or string form).
+func truthy(v any) bool {
+	switch t := v.(type) {
+	case bool:
+		return t
+	case string:
+		return strings.EqualFold(t, "true")
+	default:
+		return false
+	}
+}

internal/oidc/federation_mfa.go

@@ -0,0 +1,124 @@
+// Copyright 2026 Hanzo AI, Inc. All rights reserved.
+
+package oidc
+
+import (
+	"encoding/json"
+	"strings"
+
+	"github.com/hanzoai/orm"
+	"github.com/zap-proto/zip"
+
+	"github.com/hanzoai/iam/internal/httpx"
+	"github.com/hanzoai/iam/internal/mfa/factor"
+	"github.com/hanzoai/iam/internal/store"
+)
+
+// The second-factor RESUME for a federated login. When the federation callback
+// resolves a user who owes a factor, it mints nothing — it parks the resume in a
+// single-use, expiring, subject-pinned LoginChallenge (KindFederation) and sends
+// the browser to the hosted 2FA page. This endpoint is where that page posts the
+// factor: it verifies it through the SAME factor seam the password MFA gate uses
+// and, only then, mints the code for the PINNED authorize request.
+//
+// It closes the hole a live MFA gate would otherwise leave open: without it, a
+// 2FA-enrolled user signing in through Google/GitHub would skip the second factor
+// a password login demands.
+
+// PathFederationMfa is the resume endpoint. Public (before the Guard): it
+// self-authenticates through the challenge the callback set — a single-use,
+// expiring, subject-pinned token — exactly as the callback self-authenticates via
+// its state. The challenge id rides the httpOnly, SameSite=Lax cookie, so a
+// cross-site POST carries no challenge and fails closed.
+const PathFederationMfa = "/v1/iam/oauth/federation/mfa"
+
+// routeFederationMfa registers the resume endpoint on the PUBLIC group r.
+func routeFederationMfa(r zip.Router, db orm.DB) {
+	r.Post(PathFederationMfa, federationMfaHandler(db))
+}
+
+// fedMfaForm is the resume body. It carries the FACTOR and nothing else — no user
+// id and no redirect_uri, BY DESIGN: the target user and the whole authorize
+// request are pinned in the challenge (Subject + Payload), so there is
+// structurally no request field that could swap them mid-flow.
+type fedMfaForm struct {
+	Challenge    string `json:"challenge"`
+	MfaType      string `json:"mfaType"`
+	Passcode     string `json:"passcode"`
+	RecoveryCode string `json:"recoveryCode"`
+}
+
+// federationMfaHandler finishes a parked federated login: it spends the challenge,
+// loads the PINNED user from its subject (never the request), verifies the second
+// factor through the shared factor seam, and only then mints the code for the
+// pinned authorize request. Fail-closed at every step; taking the challenge spends
+// it, so a wrong factor burns it and a fresh federation is required to retry —
+// exactly as the password gate behaves.
+func federationMfaHandler(db orm.DB) zip.Handler {
+	return func(c *zip.Ctx) error {
+		var f fedMfaForm
+		if err := c.Bind(&f); err != nil {
+			return httpx.Err(c, "invalid request body")
+		}
+		ctx := c.Context()
+
+		ch, err := TakeChallenge(ctx, db, ReadChallenge(c, f.Challenge), KindFederation, nowFunc())
+		if err != nil {
+			return httpx.Err(c, err.Error())
+		}
+		ClearChallenge(c)
+
+		owner, name, _ := strings.Cut(ch.Subject, "/")
+		user, err := store.GetUserByName(ctx, db, owner, name)
+		if err != nil {
+			return httpx.Err(c, err.Error())
+		}
+		if user == nil || user.IsForbidden || user.IsDeleted {
+			return httpx.Err(c, ErrChallenge.Error())
+		}
+
+		// Verify the factor — the ONE factor seam, shared with the password gate.
+		switch {
+		case f.Passcode != "":
+			if f.MfaType != factor.App {
+				return httpx.Err(c, "invalid multi-factor authentication type")
+			}
+			if !factor.Verify(user.TotpSecret, f.Passcode) {
+				return httpx.Err(c, "the multi-factor authentication code is incorrect")
+			}
+		case f.RecoveryCode != "":
+			if !factor.UseRecovery(user, f.RecoveryCode) {
+				return httpx.Err(c, "the recovery code is incorrect")
+			}
+			if err := factor.Save(ctx, db, user); err != nil {
+				return httpx.Err(c, err.Error())
+			}
+		default:
+			return httpx.Err(c, "missing passcode or recovery code")
+		}
+
+		// Resume the ORIGINAL authorize request from the PINNED payload — never from
+		// the request. Re-resolve the app and re-validate its redirect_uri against the
+		// live allow-list (defense in depth against a tampered row).
+		var p fedResumeParams
+		if err := json.Unmarshal([]byte(ch.Payload), &p); err != nil {
+			return httpx.Err(c, "internal error")
+		}
+		app, err := store.GetApplicationByClientId(ctx, db, p.ClientId)
+		if err != nil || app == nil {
+			return httpx.Err(c, "the client application is unavailable")
+		}
+		if !app.IsRedirectUriValid(p.RedirectUri) {
+			return httpx.Err(c, "invalid redirect_uri")
+		}
+		loc, err := federationMint(ctx, db, app, user, p, nowFunc())
+		if err != nil {
+			if err == errPKCERequired {
+				return httpx.Err(c, "PKCE is required for public clients")
+			}
+			return httpx.Err(c, "internal error")
+		}
+		// The SPA navigates the browser to this RP redirect (redirect_uri?code&state).
+		return httpx.Ok(c, loc)
+	}
+}

internal/oidc/federation_mfa_test.go

@@ -0,0 +1,259 @@
+// Copyright 2026 Hanzo AI, Inc. All rights reserved.
+
+package oidc
+
+import (
+	"context"
+	"encoding/json"
+	"net/url"
+	"strings"
+	"testing"
+	"time"
+
+	"github.com/hanzoai/orm"
+
+	"github.com/hanzoai/iam/internal/mfa/factor"
+)
+
+// The federated-login second-factor gate, driven through the REAL mounted routes
+// and the same httptest mock IdP the federation suite uses. The contract that
+// matters is a store fact: an MFA-enrolled user who signs in through an external
+// IdP gets NO authorization code until the factor lands — the hole a live MFA gate
+// would otherwise leave open.
+
+// fedEnroll seeds a user (in org hanzo) with the given email AND a live TOTP
+// factor, returning the secret. The email must match the mock IdP so the callback
+// links to this account by verified email.
+func fedEnroll(t *testing.T, db orm.DB, name, email string) string {
+	t.Helper()
+	seedUser(t, db, name, email, "pw")
+	secret, _, err := factor.Enroll("hanzo/"+name, "Hanzo")
+	if err != nil {
+		t.Fatal(err)
+	}
+	u := userRow(t, db, name)
+	u.TotpSecret = secret
+	u.PreferredMfaType = factor.App
+	if err := u.UpdateCtx(context.Background()); err != nil {
+		t.Fatal(err)
+	}
+	return secret
+}
+
+// (a) An MFA-enrolled user signing in through federation is CHALLENGED, not minted:
+// the callback sends the browser to the 2FA page, sets the challenge cookie, and
+// persists no token. Presenting the factor then mints the code for that user.
+func TestFederationMfa_EnrolledUserChallengedThenResumes(t *testing.T) {
+	app, db := newServer(t)
+	seedApp(t, db, appOpts{clientID: "webapp", redirectURIs: []string{testRedirect}})
+	secret := fedEnroll(t, db, "alice", "alice@example.com")
+	m := newMockOIDC(t, fedGoogleCID)
+	seedOIDCProvider(t, db, "webapp", m)
+
+	q, cookie := beginAuthorize(t, app, "webapp", fedProvGoogle)
+	m.mu.Lock()
+	m.nonce = q.Get("nonce")
+	m.mu.Unlock()
+
+	resp := callback(t, app, q.Get("state"), "idp-code-1", cookie)
+	loc := resp.Header.Get("Location")
+	if resp.StatusCode != 302 {
+		t.Fatalf("callback status = %d, want 302", resp.StatusCode)
+	}
+	// The load-bearing negative: the callback must NOT have minted a code to the RP.
+	if strings.HasPrefix(loc, testRedirect) {
+		t.Fatalf("PASSWORD-FREE MFA BYPASS: federation minted a code for a 2FA user without the factor: %q", loc)
+	}
+	if !strings.HasSuffix(loc, PathMfaVerify) {
+		t.Fatalf("a 2FA-enrolled federated login must go to the 2FA page, got %q", loc)
+	}
+	if n := tokens(t, db); n != 0 {
+		t.Fatalf("%d token row(s) persisted before the second factor", n)
+	}
+	id := challengeOf(t, resp)
+
+	// Present the factor → the code is minted and the RP redirect returned.
+	req := jsonReq("POST", PathFederationMfa, map[string]string{"mfaType": factor.App, "passcode": passcode(t, secret)})
+	req.Header.Set("Cookie", challengeCookie+"="+id)
+	_, body := do(t, app, req)
+	mm := decode(t, body)
+	if mm["status"] != "ok" {
+		t.Fatalf("resume with a valid factor failed: %v", mm["msg"])
+	}
+	rurl, _ := mm["data"].(string)
+	if !strings.HasPrefix(rurl, testRedirect) {
+		t.Fatalf("resume must return the RP redirect, got %q", rurl)
+	}
+	cb, _ := url.Parse(rurl)
+	code := cb.Query().Get("code")
+	if code == "" {
+		t.Fatal("resume returned no authorization code")
+	}
+	if cb.Query().Get("state") != fedAppState {
+		t.Errorf("app state not echoed on resume: %q", cb.Query().Get("state"))
+	}
+	tok, err := store2GetTokenByCode(db, code)
+	if err != nil || tok == nil {
+		t.Fatalf("minted code resolves to no token: %v", err)
+	}
+	if tok.User != "hanzo/alice" {
+		t.Fatalf("code bound to %q, want hanzo/alice", tok.User)
+	}
+}
+
+// A recovery code answers the federated challenge too, and is consumed once.
+func TestFederationMfa_RecoveryCodeResumes(t *testing.T) {
+	app, db := newServer(t)
+	seedApp(t, db, appOpts{clientID: "webapp", secret: "s3cret", redirectURIs: []string{testRedirect}})
+	fedEnroll(t, db, "alice", "alice@example.com")
+	plain, err := factor.MintRecovery()
+	if err != nil {
+		t.Fatal(err)
+	}
+	hash, err := factor.HashRecovery(plain)
+	if err != nil {
+		t.Fatal(err)
+	}
+	u := userRow(t, db, "alice")
+	u.RecoveryCodes = []string{hash}
+	if err := u.UpdateCtx(context.Background()); err != nil {
+		t.Fatal(err)
+	}
+
+	p := fedResumeParams{ClientId: "webapp", RedirectUri: testRedirect, AppState: fedAppState, Scope: "openid"}
+	payload, _ := json.Marshal(p)
+	id, err := MintChallenge(context.Background(), db, KindFederation, "hanzo/alice", string(payload), time.Now())
+	if err != nil {
+		t.Fatal(err)
+	}
+	req := jsonReq("POST", PathFederationMfa, map[string]string{"recoveryCode": plain})
+	req.Header.Set("Cookie", challengeCookie+"="+id)
+	_, body := do(t, app, req)
+	if m := decode(t, body); m["status"] != "ok" {
+		t.Fatalf("recovery-code resume failed: %v", m["msg"])
+	}
+	if got := userRow(t, db, "alice").RecoveryCodes; len(got) != 0 {
+		t.Fatalf("recovery code not consumed: %v", got)
+	}
+}
+
+// (b) A user with NO factor flows straight through federation exactly as before —
+// the gate is invisible to everyone else.
+func TestFederationMfa_UnenrolledUserFlowsThrough(t *testing.T) {
+	app, db := newServer(t)
+	seedApp(t, db, appOpts{clientID: "webapp", redirectURIs: []string{testRedirect}})
+	seedUser(t, db, "bob", "alice@example.com", "pw") // matches the mock email, NO factor
+	m := newMockOIDC(t, fedGoogleCID)
+	seedOIDCProvider(t, db, "webapp", m)
+
+	q, cookie := beginAuthorize(t, app, "webapp", fedProvGoogle)
+	m.mu.Lock()
+	m.nonce = q.Get("nonce")
+	m.mu.Unlock()
+
+	resp := callback(t, app, q.Get("state"), "idp-code-1", cookie)
+	loc := requireRedirect(t, resp, testRedirect)
+	cb, _ := url.Parse(loc)
+	if cb.Query().Get("code") == "" {
+		t.Fatalf("an unenrolled federated login must mint a code directly, got %q", loc)
+	}
+}
+
+// (c) The federation challenge is single-use and expiring.
+func TestFederationMfa_ChallengeSingleUseAndExpiring(t *testing.T) {
+	app, db := newServer(t)
+	seedApp(t, db, appOpts{clientID: "webapp", secret: "s3cret", redirectURIs: []string{testRedirect}})
+	secret := fedEnroll(t, db, "alice", "alice@example.com")
+
+	mk := func(now time.Time) string {
+		p := fedResumeParams{ClientId: "webapp", RedirectUri: testRedirect, AppState: fedAppState, Scope: "openid"}
+		payload, _ := json.Marshal(p)
+		id, err := MintChallenge(context.Background(), db, KindFederation, "hanzo/alice", string(payload), now)
+		if err != nil {
+			t.Fatal(err)
+		}
+		return id
+	}
+	resume := func(id string) map[string]any {
+		req := jsonReq("POST", PathFederationMfa, map[string]string{"mfaType": factor.App, "passcode": passcode(t, secret)})
+		req.Header.Set("Cookie", challengeCookie+"="+id)
+		_, body := do(t, app, req)
+		return decode(t, body)
+	}
+
+	// single-use: first spends, second is refused.
+	id := mk(time.Now())
+	if m := resume(id); m["status"] != "ok" {
+		t.Fatalf("first resume failed: %v", m["msg"])
+	}
+	if m := resume(id); m["status"] != "error" {
+		t.Fatalf("a spent federation challenge was accepted again: %v", m)
+	}
+
+	// expiring: a challenge past its TTL is refused before any factor is checked.
+	start := time.Unix(1_800_000_000, 0)
+	nowFuncSet(t, start)
+	id2 := mk(start)
+	nowFuncSet(t, start.Add(challengeTTL+time.Second))
+	if m := resume(id2); m["status"] != "error" {
+		t.Fatalf("an expired federation challenge was accepted: %v", m)
+	}
+}
+
+// (d) The target user and redirect_uri are PINNED in the challenge: the resume
+// body has no field that can swap them, and extra request fields are ignored.
+func TestFederationMfa_UserAndRedirectPinned(t *testing.T) {
+	app, db := newServer(t)
+	seedApp(t, db, appOpts{clientID: "webapp", secret: "s3cret", redirectURIs: []string{testRedirect}})
+	seedApp(t, db, appOpts{clientID: "evil", secret: "x", redirectURIs: []string{"https://evil.example/cb"}})
+	secret := fedEnroll(t, db, "alice", "alice@example.com")
+	seedUser(t, db, "mallory", "mallory@example.com", "pw")
+
+	p := fedResumeParams{ClientId: "webapp", RedirectUri: testRedirect, AppState: fedAppState, Scope: "openid"}
+	payload, _ := json.Marshal(p)
+	id, err := MintChallenge(context.Background(), db, KindFederation, "hanzo/alice", string(payload), time.Now())
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	// The body tries to steer the ceremony at another user, app, and redirect.
+	req := jsonReq("POST", PathFederationMfa, map[string]string{
+		"mfaType": factor.App, "passcode": passcode(t, secret),
+		"username": "mallory", "name": "mallory", "clientId": "evil", "redirectUri": "https://evil.example/cb",
+	})
+	req.Header.Set("Cookie", challengeCookie+"="+id)
+	_, body := do(t, app, req)
+	m := decode(t, body)
+	if m["status"] != "ok" {
+		t.Fatalf("resume failed: %v", m["msg"])
+	}
+	rurl, _ := m["data"].(string)
+	if !strings.HasPrefix(rurl, testRedirect) {
+		t.Fatalf("redirect_uri not pinned — the body steered it to %q", rurl)
+	}
+	cb, _ := url.Parse(rurl)
+	tok, err := store2GetTokenByCode(db, cb.Query().Get("code"))
+	if err != nil || tok == nil {
+		t.Fatalf("no token for the minted code: %v", err)
+	}
+	if tok.User != "hanzo/alice" {
+		t.Fatalf("target user not pinned — code bound to %q", tok.User)
+	}
+	if tok.RedirectUri != testRedirect {
+		t.Fatalf("redirect_uri not pinned on the code: %q", tok.RedirectUri)
+	}
+}
+
+// A missing/forged challenge fails closed — no user, no code.
+func TestFederationMfa_NoChallengeFailsClosed(t *testing.T) {
+	app, db := newServer(t)
+	seedApp(t, db, appOpts{clientID: "webapp", redirectURIs: []string{testRedirect}})
+	req := jsonReq("POST", PathFederationMfa, map[string]string{"mfaType": factor.App, "passcode": "000000"})
+	_, body := do(t, app, req) // no cookie, no body challenge
+	if m := decode(t, body); m["status"] != "error" {
+		t.Fatalf("a resume with no challenge must fail closed, got %v", m)
+	}
+	if n := tokens(t, db); n != 0 {
+		t.Fatalf("%d token(s) minted with no challenge", n)
+	}
+}

internal/oidc/federation_test.go

@@ -0,0 +1,925 @@
+// Copyright 2026 Hanzo AI, Inc. All rights reserved.
+
+package oidc
+
+import (
+	"context"
+	"crypto/rsa"
+	"encoding/base64"
+	"encoding/json"
+	"math/big"
+	"net/http"
+	"net/http/httptest"
+	"net/url"
+	"strings"
+	"sync"
+	"testing"
+	"time"
+
+	"github.com/golang-jwt/jwt/v5"
+	"github.com/hanzoai/orm"
+	"github.com/zap-proto/zip"
+
+	"github.com/hanzoai/iam/internal/schema"
+	"github.com/hanzoai/iam/internal/store"
+)
+
+// Federation is driven through the REAL mounted routes (authorize → IdP → callback
+// → code → token). The external IdP is an httptest server — a real HTTP RP round
+// trip with a real OIDC discovery document, a real JWKS, and a real RS256-signed
+// id_token whose signature/issuer/audience/nonce iam2 actually verifies (Google
+// dialect), plus a real GitHub userinfo + verified-email exchange. No live
+// Google/GitHub is contacted.
+
+const (
+	fedAppState   = "app-state-xyz"
+	fedVerifier   = "verifier-abcdefghijklmnopqrstuvwxyz-0123456789"
+	fedGoogleCID  = "google-oauth-client"
+	fedGitHubCID  = "github-oauth-client"
+	fedProvGoogle = "provider-google"
+	fedProvGitHub = "provider-github"
+)
+
+// ---------------------------------------------------------------------------
+// Mock OIDC IdP (Google-shaped): discovery + JWKS + RS256 id_token.
+// ---------------------------------------------------------------------------
+
+type mockOIDC struct {
+	*httptest.Server
+	key      *rsa.PrivateKey
+	wrongKey *rsa.PrivateKey
+	kid      string
+	clientID string
+
+	mu             sync.Mutex
+	sub            string
+	email          string
+	name           string
+	emailVerified  bool
+	nonce          string // baked into the id_token; wired from the authorize redirect
+	signWrong      bool   // sign with wrongKey → signature must fail
+	noneAlg        bool   // emit an alg=none (unsigned) id_token → must be rejected
+	issuerOverride string // override id_token iss (issuer-confusion test)
+	audOverride    string // override id_token aud (audience test)
+	tokenForm      url.Values
+}
+
+// allowPrivateFederationDial relaxes the SSRF dial guard for the test's duration
+// so the httptest mock IdPs (bound to 127.0.0.1) are reachable — the same
+// package-var test-injection pattern as nowFuncSet. Production never flips it.
+func allowPrivateFederationDial(t *testing.T) {
+	t.Helper()
+	prev := federationDialAllowsPrivate
+	federationDialAllowsPrivate = true
+	t.Cleanup(func() { federationDialAllowsPrivate = prev })
+}
+
+func newMockOIDC(t *testing.T, clientID string) *mockOIDC {
+	t.Helper()
+	allowPrivateFederationDial(t)
+	m := &mockOIDC{
+		key:           mustGenRSA(t),
+		wrongKey:      mustGenRSA(t),
+		kid:           "mock-oidc-kid",
+		clientID:      clientID,
+		sub:           "google-sub-1001",
+		email:         "alice@example.com",
+		name:          "Alice Example",
+		emailVerified: true,
+	}
+	mux := http.NewServeMux()
+	mux.HandleFunc("/.well-known/openid-configuration", func(w http.ResponseWriter, _ *http.Request) {
+		writeJSON(w, map[string]any{
+			"issuer":                 m.URL,
+			"authorization_endpoint": m.URL + "/authorize",
+			"token_endpoint":         m.URL + "/token",
+			"userinfo_endpoint":      m.URL + "/userinfo",
+			"jwks_uri":               m.URL + "/jwks",
+		})
+	})
+	mux.HandleFunc("/jwks", func(w http.ResponseWriter, _ *http.Request) {
+		pub := m.key.PublicKey
+		writeJSON(w, map[string]any{"keys": []map[string]any{{
+			"kty": "RSA", "use": "sig", "alg": "RS256", "kid": m.kid,
+			"n": base64.RawURLEncoding.EncodeToString(pub.N.Bytes()),
+			"e": base64.RawURLEncoding.EncodeToString(big.NewInt(int64(pub.E)).Bytes()),
+		}}})
+	})
+	mux.HandleFunc("/token", func(w http.ResponseWriter, r *http.Request) {
+		_ = r.ParseForm()
+		m.mu.Lock()
+		m.tokenForm = r.Form
+		iss := firstNonEmpty(m.issuerOverride, m.URL)
+		aud := firstNonEmpty(m.audOverride, m.clientID)
+		claims := jwt.MapClaims{
+			"iss": iss, "sub": m.sub, "aud": aud,
+			"exp":            time.Now().Add(time.Hour).Unix(),
+			"iat":            time.Now().Add(-time.Minute).Unix(),
+			"nonce":          m.nonce,
+			"email":          m.email,
+			"email_verified": m.emailVerified,
+			"name":           m.name,
+		}
+		signKey := m.key
+		if m.signWrong {
+			signKey = m.wrongKey
+		}
+		noneAlg := m.noneAlg
+		m.mu.Unlock()
+		// The alg=none forgery: an unsigned token whose header claims no signature.
+		if noneAlg {
+			tok := jwt.NewWithClaims(jwt.SigningMethodNone, claims)
+			idt, _ := tok.SignedString(jwt.UnsafeAllowNoneSignatureType)
+			writeJSON(w, map[string]any{"access_token": "x", "id_token": idt, "token_type": "Bearer"})
+			return
+		}
+		tok := jwt.NewWithClaims(jwt.SigningMethodRS256, claims)
+		tok.Header["kid"] = m.kid
+		idt, err := tok.SignedString(signKey)
+		if err != nil {
+			http.Error(w, "sign", 500)
+			return
+		}
+		writeJSON(w, map[string]any{"access_token": "idp-at-" + randHex(6), "id_token": idt, "token_type": "Bearer"})
+	})
+	m.Server = httptest.NewServer(mux)
+	t.Cleanup(m.Close)
+	return m
+}
+
+// ---------------------------------------------------------------------------
+// Mock GitHub IdP (OAuth2 + userinfo + verified emails).
+// ---------------------------------------------------------------------------
+
+type mockGitHub struct {
+	*httptest.Server
+	mu           sync.Mutex
+	id           int64
+	login        string
+	name         string
+	profileEmail string
+	emails       []map[string]any // {email, primary, verified}
+	tokenForm    url.Values
+}
+
+func newMockGitHub(t *testing.T) *mockGitHub {
+	t.Helper()
+	allowPrivateFederationDial(t)
+	m := &mockGitHub{
+		id:    424242,
+		login: "octocat",
+		name:  "The Octocat",
+		emails: []map[string]any{
+			{"email": "octo-unverified@example.com", "primary": false, "verified": false},
+			{"email": "octo@example.com", "primary": true, "verified": true},
+		},
+	}
+	mux := http.NewServeMux()
+	mux.HandleFunc("/token", func(w http.ResponseWriter, r *http.Request) {
+		_ = r.ParseForm()
+		m.mu.Lock()
+		m.tokenForm = r.Form
+		m.mu.Unlock()
+		writeJSON(w, map[string]any{"access_token": "gho-" + randHex(6), "token_type": "bearer", "scope": "read:user,user:email"})
+	})
+	mux.HandleFunc("/user/emails", func(w http.ResponseWriter, _ *http.Request) {
+		m.mu.Lock()
+		defer m.mu.Unlock()
+		writeJSON(w, m.emails)
+	})
+	mux.HandleFunc("/user", func(w http.ResponseWriter, _ *http.Request) {
+		m.mu.Lock()
+		defer m.mu.Unlock()
+		writeJSON(w, map[string]any{"id": m.id, "login": m.login, "name": m.name, "email": m.profileEmail, "avatar_url": "https://avatars/x"})
+	})
+	m.Server = httptest.NewServer(mux)
+	t.Cleanup(m.Close)
+	return m
+}
+
+func writeJSON(w http.ResponseWriter, v any) {
+	w.Header().Set("Content-Type", "application/json")
+	_ = json.NewEncoder(w).Encode(v)
+}
+
+// ---------------------------------------------------------------------------
+// Seeds + drivers.
+// ---------------------------------------------------------------------------
+
+// seedOIDCProvider seeds a Google-dialect Provider row whose OIDC issuer points
+// at the mock, and links it (sign-in enabled) onto the app.
+func seedOIDCProvider(t *testing.T, db orm.DB, appClientID string, m *mockOIDC) {
+	t.Helper()
+	p := orm.New[schema.Provider](db)
+	p.Owner, p.Name = "admin", fedProvGoogle
+	p.Category, p.Type = "OAuth", "Google"
+	p.ClientId, p.ClientSecret = m.clientID, "google-secret-do-not-log"
+	p.IssuerUrl = m.URL
+	p.SetId("admin/" + fedProvGoogle)
+	if err := p.CreateCtx(context.Background()); err != nil {
+		t.Fatalf("seed google provider: %v", err)
+	}
+	linkProvider(t, db, appClientID, fedProvGoogle)
+}
+
+// seedGitHubProvider seeds a GitHub-dialect Provider row whose endpoints point at
+// the mock, and links it onto the app.
+func seedGitHubProvider(t *testing.T, db orm.DB, appClientID string, m *mockGitHub) {
+	t.Helper()
+	p := orm.New[schema.Provider](db)
+	p.Owner, p.Name = "admin", fedProvGitHub
+	p.Category, p.Type = "OAuth", "GitHub"
+	p.ClientId, p.ClientSecret = fedGitHubCID, "github-secret-do-not-log"
+	p.CustomAuthUrl = m.URL + "/authorize"
+	p.CustomTokenUrl = m.URL + "/token"
+	p.CustomUserInfoUrl = m.URL + "/user"
+	p.SetId("admin/" + fedProvGitHub)
+	if err := p.CreateCtx(context.Background()); err != nil {
+		t.Fatalf("seed github provider: %v", err)
+	}
+	linkProvider(t, db, appClientID, fedProvGitHub)
+}
+
+// linkProvider appends a sign-in-enabled ProviderItem to an app and persists it.
+func linkProvider(t *testing.T, db orm.DB, appClientID, providerName string) {
+	t.Helper()
+	a, err := orm.Get[schema.Application](db, "admin/"+appClientID)
+	if err != nil {
+		t.Fatalf("load app: %v", err)
+	}
+	a.Providers = append(a.Providers, &schema.ProviderItem{Owner: "admin", Name: providerName, CanSignIn: true, CanSignUp: true})
+	if err := a.UpdateCtx(context.Background()); err != nil {
+		t.Fatalf("link provider: %v", err)
+	}
+}
+
+// beginAuthorize drives GET /v1/iam/oauth/authorize with a provider hint and
+// returns the IdP-authorize query (from the 302 Location) and the anti-forgery
+// cookie the response set. It asserts the request is a 302 to an IdP.
+func beginAuthorize(t *testing.T, app *zip.App, clientID, provider string) (url.Values, string) {
+	t.Helper()
+	q := url.Values{
+		"response_type":         {"code"},
+		"client_id":             {clientID},
+		"redirect_uri":          {testRedirect},
+		"scope":                 {"openid email profile"},
+		"state":                 {fedAppState},
+		"code_challenge":        {ComputeS256Challenge(fedVerifier)},
+		"code_challenge_method": {"S256"},
+		"provider":              {provider},
+	}
+	resp, _ := do(t, app, formReqNoBody("GET", PathAuthorize+"?"+q.Encode()))
+	if resp.StatusCode != 302 {
+		t.Fatalf("authorize(provider) status = %d, want 302", resp.StatusCode)
+	}
+	loc, err := url.Parse(resp.Header.Get("Location"))
+	if err != nil {
+		t.Fatalf("parse IdP authorize location: %v", err)
+	}
+	// A federation kickoff redirects to an ABSOLUTE external IdP URL, never to the
+	// relative hosted-login path a credential flow uses.
+	if !loc.IsAbs() || loc.Host == "" {
+		t.Fatalf("authorize(provider) must redirect to an external IdP; got %q", loc.String())
+	}
+	return loc.Query(), cookieKV(resp.Header.Get("Set-Cookie"))
+}
+
+// callback drives GET /v1/iam/oauth/callback with the given state/code and the
+// anti-forgery cookie.
+func callback(t *testing.T, app *zip.App, state, code, cookie string) *http.Response {
+	t.Helper()
+	q := url.Values{"state": {state}, "code": {code}}
+	req := formReqNoBody("GET", PathFederationCallback+"?"+q.Encode())
+	if cookie != "" {
+		req.Header.Set("Cookie", cookie)
+	}
+	resp, _ := do(t, app, req)
+	return resp
+}
+
+// countUsers returns the number of users in the hanzo org.
+func countUsers(t *testing.T, db orm.DB) int {
+	t.Helper()
+	n, err := orm.TypedQuery[schema.User](db).Filter("Owner=", "hanzo").Count(context.Background())
+	if err != nil {
+		t.Fatalf("count users: %v", err)
+	}
+	return n
+}
+
+// ---------------------------------------------------------------------------
+// Tests.
+// ---------------------------------------------------------------------------
+
+// The authorize endpoint, given a provider hint, redirects the browser to the
+// external IdP with response_type=code, our callback, a single-use state, S256
+// PKCE, and (OIDC) a nonce — and sets the HttpOnly browser-binding cookie. The
+// client_secret is NEVER on this browser-facing redirect.
+func TestFederation_AuthorizeRedirectsToOIDCWithStatePKCENonce(t *testing.T) {
+	app, db := newServer(t)
+	seedApp(t, db, appOpts{clientID: "webapp", redirectURIs: []string{testRedirect}})
+	m := newMockOIDC(t, fedGoogleCID)
+	seedOIDCProvider(t, db, "webapp", m)
+
+	q, cookie := beginAuthorize(t, app, "webapp", fedProvGoogle)
+
+	if q.Get("response_type") != "code" {
+		t.Errorf("response_type = %q", q.Get("response_type"))
+	}
+	if q.Get("client_id") != fedGoogleCID {
+		t.Errorf("client_id = %q, want the provider's IdP client id", q.Get("client_id"))
+	}
+	if !strings.HasSuffix(q.Get("redirect_uri"), PathFederationCallback) {
+		t.Errorf("redirect_uri = %q, want our callback", q.Get("redirect_uri"))
+	}
+	if q.Get("state") == "" {
+		t.Error("state must be present (single-use CSRF token)")
+	}
+	if q.Get("nonce") == "" {
+		t.Error("OIDC nonce must be present")
+	}
+	if q.Get("code_challenge") == "" || q.Get("code_challenge_method") != "S256" {
+		t.Errorf("IdP-leg PKCE missing: challenge=%q method=%q", q.Get("code_challenge"), q.Get("code_challenge_method"))
+	}
+	if cookie == "" || !strings.HasPrefix(cookie, fedCookieName+"=") {
+		t.Errorf("anti-forgery cookie missing: %q", cookie)
+	}
+	// The provider secret must never cross to the browser.
+	if strings.Contains(q.Encode(), "google-secret-do-not-log") {
+		t.Fatal("client_secret leaked into the browser-facing IdP redirect")
+	}
+	// State is server-side single-use.
+	if st, _ := store.GetFederationState(context.Background(), db, q.Get("state")); st == nil {
+		t.Fatal("federation state row was not persisted")
+	}
+}
+
+// GitHub authorize carries state (its CSRF defense) but no nonce (OAuth2, no
+// id_token) and no PKCE by default.
+func TestFederation_AuthorizeRedirectsToGitHub(t *testing.T) {
+	app, db := newServer(t)
+	seedApp(t, db, appOpts{clientID: "webapp", redirectURIs: []string{testRedirect}})
+	m := newMockGitHub(t)
+	seedGitHubProvider(t, db, "webapp", m)
+
+	q, cookie := beginAuthorize(t, app, "webapp", fedProvGitHub)
+	if q.Get("state") == "" {
+		t.Error("GitHub authorize must carry state")
+	}
+	if q.Get("nonce") != "" {
+		t.Error("GitHub (OAuth2) must not carry an OIDC nonce")
+	}
+	if cookie == "" {
+		t.Error("anti-forgery cookie must be set")
+	}
+}
+
+// Full OIDC round-trip: a first-time login PROVISIONS a user (no password, not
+// admin) and mints an iam2 authorization code; the relying party's existing PKCE
+// code→token exchange then completes unchanged and carries the new user's sub.
+func TestFederation_OIDCCallbackProvisionsUserAndIssuesCode(t *testing.T) {
+	app, db := newServer(t)
+	seedApp(t, db, appOpts{clientID: "webapp", redirectURIs: []string{testRedirect}})
+	m := newMockOIDC(t, fedGoogleCID)
+	seedOIDCProvider(t, db, "webapp", m)
+
+	before := countUsers(t, db)
+	q, cookie := beginAuthorize(t, app, "webapp", fedProvGoogle)
+	m.mu.Lock()
+	m.nonce = q.Get("nonce") // wire the transaction's real IdP nonce into the id_token
+	m.mu.Unlock()
+
+	resp := callback(t, app, q.Get("state"), "idp-code-1", cookie)
+	loc := requireRedirect(t, resp, testRedirect)
+	cb, _ := url.Parse(loc)
+	code := cb.Query().Get("code")
+	if code == "" {
+		t.Fatalf("callback must redirect with an iam2 code; got %q", loc)
+	}
+	if cb.Query().Get("state") != fedAppState {
+		t.Errorf("app state not echoed: %q", cb.Query().Get("state"))
+	}
+
+	// A user was provisioned, linked by the Google subject, no password, no admin.
+	u, err := store.GetUserByConnector(context.Background(), db, "hanzo", "google", m.sub)
+	if err != nil || u == nil {
+		t.Fatalf("provisioned user not found by connector subject: %v", err)
+	}
+	if u.PasswordHash != "" {
+		t.Error("federated user must have NO password hash")
+	}
+	if u.IsAdmin {
+		t.Fatal("federation must NEVER set isAdmin")
+	}
+	if !u.EmailVerified || u.Email != m.email {
+		t.Errorf("verified email not carried: verified=%v email=%q", u.EmailVerified, u.Email)
+	}
+	if countUsers(t, db) != before+1 {
+		t.Fatalf("expected exactly one new user")
+	}
+
+	// The iam2 code redeems through the ordinary PKCE token exchange, unchanged.
+	tokResp, tok := exchangeCode(t, app, url.Values{
+		"code": {code}, "client_id": {"webapp"}, "redirect_uri": {testRedirect}, "code_verifier": {fedVerifier},
+	})
+	if tokResp.StatusCode != 200 {
+		t.Fatalf("iam2 code exchange failed: %d %v", tokResp.StatusCode, tok)
+	}
+	if tok["access_token"] == nil {
+		t.Fatal("no access_token from the iam2 code exchange")
+	}
+	// The token subject is the provisioned user; no IdP token leaks into it.
+	if body := tokenBody(tok); strings.Contains(body, "idp-at-") || strings.Contains(body, "google-secret-do-not-log") {
+		t.Fatal("IdP access token / client secret leaked into the iam2 token response")
+	}
+}
+
+// The GitHub dialect: token exchange + /user + /user/emails, provisioning by the
+// primary VERIFIED email.
+func TestFederation_GitHubCallbackProvisionsViaVerifiedEmail(t *testing.T) {
+	app, db := newServer(t)
+	seedApp(t, db, appOpts{clientID: "webapp", redirectURIs: []string{testRedirect}})
+	m := newMockGitHub(t)
+	seedGitHubProvider(t, db, "webapp", m)
+
+	q, cookie := beginAuthorize(t, app, "webapp", fedProvGitHub)
+	resp := callback(t, app, q.Get("state"), "gh-code-1", cookie)
+	loc := requireRedirect(t, resp, testRedirect)
+	if code := mustQuery(t, loc).Get("code"); code == "" {
+		t.Fatalf("GitHub federation did not mint an iam2 code: %q", loc)
+	}
+	u, err := store.GetUserByConnector(context.Background(), db, "hanzo", "github", "424242")
+	if err != nil || u == nil {
+		t.Fatalf("GitHub user not provisioned by subject: %v", err)
+	}
+	if u.Email != "octo@example.com" || !u.EmailVerified {
+		t.Errorf("expected the primary verified email; got %q verified=%v", u.Email, u.EmailVerified)
+	}
+	// The GitHub client secret only ever went to the token endpoint (server-side).
+	m.mu.Lock()
+	defer m.mu.Unlock()
+	if m.tokenForm.Get("client_secret") != "github-secret-do-not-log" {
+		t.Errorf("expected the secret at the token endpoint, form=%v", m.tokenForm)
+	}
+}
+
+// A returning federated user (same subject) is matched by subject — no duplicate
+// account is created on the second login.
+func TestFederation_ReloginBySubjectIsStable(t *testing.T) {
+	app, db := newServer(t)
+	seedApp(t, db, appOpts{clientID: "webapp", redirectURIs: []string{testRedirect}})
+	m := newMockOIDC(t, fedGoogleCID)
+	seedOIDCProvider(t, db, "webapp", m)
+
+	runOIDCLogin(t, app, db, m, "webapp", nil)
+	after1 := countUsers(t, db)
+	runOIDCLogin(t, app, db, m, "webapp", nil)
+	if countUsers(t, db) != after1 {
+		t.Fatalf("second login by the same subject must not create a new user")
+	}
+}
+
+// A verified IdP email that matches an EXISTING local account LINKS to it (sets
+// the connector column) instead of creating a duplicate.
+func TestFederation_LinksExistingAccountByVerifiedEmail(t *testing.T) {
+	app, db := newServer(t)
+	seedApp(t, db, appOpts{clientID: "webapp", redirectURIs: []string{testRedirect}})
+	seedUser(t, db, "alice", "alice@example.com", "pw") // pre-existing password account, same email
+	m := newMockOIDC(t, fedGoogleCID)
+	seedOIDCProvider(t, db, "webapp", m)
+
+	before := countUsers(t, db)
+	runOIDCLogin(t, app, db, m, "webapp", nil)
+	if countUsers(t, db) != before {
+		t.Fatalf("verified-email login must link, not create a duplicate")
+	}
+	// The Google subject is now linked onto the pre-existing account.
+	linked, _ := store.GetUserByName(context.Background(), db, "hanzo", "alice")
+	if linked == nil || linked.Google != m.sub {
+		t.Fatalf("connector subject not linked onto the existing account: %+v", linked)
+	}
+}
+
+// email_verified:false must NOT auto-link by email — it provisions a fresh
+// account, so an unproven address can never take over an existing one.
+func TestFederation_UnverifiedEmailDoesNotAutoLink(t *testing.T) {
+	app, db := newServer(t)
+	seedApp(t, db, appOpts{clientID: "webapp", redirectURIs: []string{testRedirect}})
+	seedUser(t, db, "victim", "victim@example.com", "pw")
+	m := newMockOIDC(t, fedGoogleCID)
+	m.email = "victim@example.com"
+	m.emailVerified = false
+	m.sub = "attacker-sub-9"
+	seedOIDCProvider(t, db, "webapp", m)
+
+	before := countUsers(t, db)
+	runOIDCLogin(t, app, db, m, "webapp", nil)
+
+	// The victim account was NOT linked.
+	victim, _ := store.GetUserByName(context.Background(), db, "hanzo", "victim")
+	if victim == nil || victim.Google != "" {
+		t.Fatalf("unverified email must not link onto the victim account: %+v", victim)
+	}
+	// A fresh account was provisioned instead.
+	if countUsers(t, db) != before+1 {
+		t.Fatalf("expected a freshly provisioned account, not a takeover")
+	}
+	if u, _ := store.GetUserByConnector(context.Background(), db, "hanzo", "google", "attacker-sub-9"); u == nil {
+		t.Fatal("federated identity should have been provisioned onto its own account")
+	}
+}
+
+// An unknown/forged state is answered in place (no trusted redirect target) and
+// never completes.
+func TestFederation_UnknownStateRejected(t *testing.T) {
+	app, db := newServer(t)
+	seedApp(t, db, appOpts{clientID: "webapp", redirectURIs: []string{testRedirect}})
+	m := newMockOIDC(t, fedGoogleCID)
+	seedOIDCProvider(t, db, "webapp", m)
+
+	// A cookie alone cannot substitute for a real server-side state row.
+	resp := callback(t, app, "totally-made-up-state", "idp-code", fedCookieName+"=whatever")
+	if resp.StatusCode != 400 {
+		t.Fatalf("unknown state status = %d, want 400", resp.StatusCode)
+	}
+	if resp.Header.Get("Location") != "" {
+		t.Fatalf("unknown state must NOT redirect anywhere; got %q", resp.Header.Get("Location"))
+	}
+}
+
+// A consumed state cannot be replayed — the second callback mints nothing.
+func TestFederation_ReplayedStateRejected(t *testing.T) {
+	app, db := newServer(t)
+	seedApp(t, db, appOpts{clientID: "webapp", redirectURIs: []string{testRedirect}})
+	m := newMockOIDC(t, fedGoogleCID)
+	seedOIDCProvider(t, db, "webapp", m)
+
+	q, cookie := beginAuthorize(t, app, "webapp", fedProvGoogle)
+	m.mu.Lock()
+	m.nonce = q.Get("nonce")
+	m.mu.Unlock()
+
+	first := callback(t, app, q.Get("state"), "idp-code-1", cookie)
+	requireRedirect(t, first, testRedirect) // success
+
+	replay := callback(t, app, q.Get("state"), "idp-code-1", cookie)
+	if replay.StatusCode != 400 || replay.Header.Get("Location") != "" {
+		t.Fatalf("replayed state must be refused in place; status=%d loc=%q", replay.StatusCode, replay.Header.Get("Location"))
+	}
+}
+
+// Without the browser-binding cookie the callback is refused (login-CSRF /
+// session-fixation defense): a state injected into another browser cannot land.
+func TestFederation_MissingOrWrongBindCookieRejected(t *testing.T) {
+	app, db := newServer(t)
+	seedApp(t, db, appOpts{clientID: "webapp", redirectURIs: []string{testRedirect}})
+	m := newMockOIDC(t, fedGoogleCID)
+	seedOIDCProvider(t, db, "webapp", m)
+
+	q, cookie := beginAuthorize(t, app, "webapp", fedProvGoogle)
+	m.mu.Lock()
+	m.nonce = q.Get("nonce")
+	m.mu.Unlock()
+
+	// No cookie.
+	noCookie := callback(t, app, q.Get("state"), "idp-code-1", "")
+	if noCookie.StatusCode != 400 || noCookie.Header.Get("Location") != "" {
+		t.Fatalf("callback without the bind cookie must be refused; status=%d", noCookie.StatusCode)
+	}
+	// Wrong cookie value.
+	wrong := callback(t, app, q.Get("state"), "idp-code-1", fedCookieName+"=not-the-secret")
+	if wrong.StatusCode != 400 || wrong.Header.Get("Location") != "" {
+		t.Fatalf("callback with a wrong bind cookie must be refused; status=%d", wrong.StatusCode)
+	}
+	// The state was not consumed by the failed attempts — the legit browser still works.
+	_ = cookie
+}
+
+// An id_token whose nonce does not match the transaction's nonce is rejected —
+// the login does not complete and no account is created/linked.
+func TestFederation_OIDCNonceMismatchRejected(t *testing.T) {
+	app, db := newServer(t)
+	seedApp(t, db, appOpts{clientID: "webapp", redirectURIs: []string{testRedirect}})
+	m := newMockOIDC(t, fedGoogleCID)
+	seedOIDCProvider(t, db, "webapp", m)
+
+	before := countUsers(t, db)
+	q, cookie := beginAuthorize(t, app, "webapp", fedProvGoogle)
+	m.mu.Lock()
+	m.nonce = "a-different-nonce-than-issued" // tamper: id_token nonce != state.IdpNonce
+	m.mu.Unlock()
+
+	resp := callback(t, app, q.Get("state"), "idp-code-1", cookie)
+	loc := requireRedirect(t, resp, testRedirect)
+	if q2 := mustQuery(t, loc); q2.Get("error") == "" || q2.Get("code") != "" {
+		t.Fatalf("nonce mismatch must fail closed (error, no code); got %q", loc)
+	}
+	if countUsers(t, db) != before {
+		t.Fatal("a nonce-mismatched login must not provision an account")
+	}
+}
+
+// An id_token whose signature does not verify against the published JWKS is
+// rejected — proving the signature check is real, not stubbed.
+func TestFederation_OIDCBadSignatureRejected(t *testing.T) {
+	app, db := newServer(t)
+	seedApp(t, db, appOpts{clientID: "webapp", redirectURIs: []string{testRedirect}})
+	m := newMockOIDC(t, fedGoogleCID)
+	m.signWrong = true // sign with a key NOT in the JWKS
+	seedOIDCProvider(t, db, "webapp", m)
+
+	before := countUsers(t, db)
+	q, cookie := beginAuthorize(t, app, "webapp", fedProvGoogle)
+	m.mu.Lock()
+	m.nonce = q.Get("nonce")
+	m.mu.Unlock()
+
+	resp := callback(t, app, q.Get("state"), "idp-code-1", cookie)
+	loc := requireRedirect(t, resp, testRedirect)
+	if q2 := mustQuery(t, loc); q2.Get("error") == "" || q2.Get("code") != "" {
+		t.Fatalf("bad signature must fail closed; got %q", loc)
+	}
+	if countUsers(t, db) != before {
+		t.Fatal("a signature-invalid login must not provision an account")
+	}
+}
+
+// An alg=none (unsigned) id_token is rejected — the signing method is pinned to
+// the asymmetric set, so the classic JWT downgrade never authenticates anyone.
+func TestFederation_OIDCAlgNoneRejected(t *testing.T) {
+	app, db := newServer(t)
+	seedApp(t, db, appOpts{clientID: "webapp", redirectURIs: []string{testRedirect}})
+	m := newMockOIDC(t, fedGoogleCID)
+	m.noneAlg = true
+	seedOIDCProvider(t, db, "webapp", m)
+
+	before := countUsers(t, db)
+	q, cookie := beginAuthorize(t, app, "webapp", fedProvGoogle)
+	m.mu.Lock()
+	m.nonce = q.Get("nonce")
+	m.mu.Unlock()
+
+	resp := callback(t, app, q.Get("state"), "idp-code-1", cookie)
+	loc := requireRedirect(t, resp, testRedirect)
+	if q2 := mustQuery(t, loc); q2.Get("error") == "" || q2.Get("code") != "" {
+		t.Fatalf("alg=none must fail closed; got %q", loc)
+	}
+	if countUsers(t, db) != before {
+		t.Fatal("an unsigned id_token must not provision an account")
+	}
+}
+
+// An id_token minted for a different audience (not our client id) is rejected.
+func TestFederation_OIDCWrongAudienceRejected(t *testing.T) {
+	app, db := newServer(t)
+	seedApp(t, db, appOpts{clientID: "webapp", redirectURIs: []string{testRedirect}})
+	m := newMockOIDC(t, fedGoogleCID)
+	m.audOverride = "some-other-client"
+	seedOIDCProvider(t, db, "webapp", m)
+
+	q, cookie := beginAuthorize(t, app, "webapp", fedProvGoogle)
+	m.mu.Lock()
+	m.nonce = q.Get("nonce")
+	m.mu.Unlock()
+
+	resp := callback(t, app, q.Get("state"), "idp-code-1", cookie)
+	loc := requireRedirect(t, resp, testRedirect)
+	if q2 := mustQuery(t, loc); q2.Get("error") == "" || q2.Get("code") != "" {
+		t.Fatalf("wrong audience must fail closed; got %q", loc)
+	}
+}
+
+// A non-allow-listed redirect_uri is refused at the authorize leg IN PLACE (never
+// redirected), and no federation transaction is created for it.
+func TestFederation_NonAllowlistedRedirectUriRefused(t *testing.T) {
+	app, db := newServer(t)
+	seedApp(t, db, appOpts{clientID: "webapp", redirectURIs: []string{testRedirect}})
+	m := newMockOIDC(t, fedGoogleCID)
+	seedOIDCProvider(t, db, "webapp", m)
+
+	q := url.Values{
+		"response_type": {"code"}, "client_id": {"webapp"},
+		"redirect_uri":   {"https://evil.example/steal"},
+		"code_challenge": {ComputeS256Challenge(fedVerifier)},
+		"provider":       {fedProvGoogle},
+	}
+	resp, _ := do(t, app, formReqNoBody("GET", PathAuthorize+"?"+q.Encode()))
+	if resp.StatusCode != 400 || resp.Header.Get("Location") != "" {
+		t.Fatalf("bad redirect_uri must be answered in place; status=%d loc=%q", resp.StatusCode, resp.Header.Get("Location"))
+	}
+}
+
+// runOIDCLogin drives a full successful OIDC federation login (authorize →
+// callback) and asserts it lands an iam2 code. mutate may tweak the mock after
+// the nonce is wired.
+func runOIDCLogin(t *testing.T, app *zip.App, db orm.DB, m *mockOIDC, clientID string, mutate func()) {
+	t.Helper()
+	q, cookie := beginAuthorize(t, app, clientID, fedProvGoogle)
+	m.mu.Lock()
+	m.nonce = q.Get("nonce")
+	m.mu.Unlock()
+	if mutate != nil {
+		mutate()
+	}
+	resp := callback(t, app, q.Get("state"), "idp-code-"+randHex(3), cookie)
+	loc := requireRedirect(t, resp, testRedirect)
+	if mustQuery(t, loc).Get("code") == "" {
+		t.Fatalf("federation login did not mint an iam2 code: %q", loc)
+	}
+}
+
+func mustQuery(t *testing.T, loc string) url.Values {
+	t.Helper()
+	u, err := url.Parse(loc)
+	if err != nil {
+		t.Fatalf("parse location %q: %v", loc, err)
+	}
+	return u.Query()
+}
+
+// ---------------------------------------------------------------------------
+// RED-TEAM PoCs — F1: federation must never mint a SuperAdmin or cross-tenant
+// identity. These reproduce the reported exploits and assert they are REFUSED.
+// ---------------------------------------------------------------------------
+
+// seedFederationTarget seeds a (possibly malicious) app — appOwner/appClientID
+// pointing its Organization at `serves` — linked to a Google-dialect provider
+// (owned by provOwner) whose OIDC issuer is the mock IdP.
+func seedFederationTarget(t *testing.T, db orm.DB, appClientID, appOwner, serves, provOwner string, m *mockOIDC) {
+	t.Helper()
+	ctx := context.Background()
+	p := orm.New[schema.Provider](db)
+	p.Owner, p.Name = provOwner, fedProvGoogle
+	p.Category, p.Type = "OAuth", "Google"
+	p.ClientId, p.ClientSecret = m.clientID, "secret-do-not-log"
+	p.IssuerUrl = m.URL
+	p.SetId(provOwner + "/" + fedProvGoogle)
+	if err := p.CreateCtx(ctx); err != nil {
+		t.Fatalf("seed provider: %v", err)
+	}
+	a := orm.New[schema.Application](db)
+	a.Owner, a.Name, a.ClientId = appOwner, appClientID, appClientID
+	a.Organization = serves
+	a.EnablePassword = true
+	a.ExpireInHours = 1
+	a.RedirectUris = []string{testRedirect}
+	a.Providers = []*schema.ProviderItem{{Owner: provOwner, Name: fedProvGoogle, CanSignIn: true}}
+	a.SetId(appOwner + "/" + appClientID)
+	if err := a.CreateCtx(ctx); err != nil {
+		t.Fatalf("seed app: %v", err)
+	}
+}
+
+func federationAuthorizeQuery(clientID string) url.Values {
+	return url.Values{
+		"response_type":         {"code"},
+		"client_id":             {clientID},
+		"redirect_uri":          {testRedirect},
+		"code_challenge":        {ComputeS256Challenge(fedVerifier)},
+		"code_challenge_method": {"S256"},
+		"state":                 {fedAppState},
+		"provider":              {fedProvGoogle},
+	}
+}
+
+// assertFederationRefused asserts a federation kickoff was refused: bounced back
+// to the relying party with an OAuth error, NEVER redirected to the IdP, NEVER a
+// code.
+func assertFederationRefused(t *testing.T, resp *http.Response, m *mockOIDC) {
+	t.Helper()
+	if resp.StatusCode != 302 {
+		t.Fatalf("want a 302 refusal redirect, got %d", resp.StatusCode)
+	}
+	loc := resp.Header.Get("Location")
+	if !strings.HasPrefix(loc, testRedirect) {
+		t.Fatalf("refusal must redirect to the relying party, not the IdP: %q", loc)
+	}
+	if m != nil && strings.HasPrefix(loc, m.URL) {
+		t.Fatal("a refused federation must never reach the IdP")
+	}
+	q := mustQuery(t, loc)
+	if q.Get("error") == "" {
+		t.Fatalf("refusal must carry an OAuth error: %q", loc)
+	}
+	if q.Get("code") != "" {
+		t.Fatal("a refused federation must not mint a code")
+	}
+}
+
+func countUsersIn(t *testing.T, db orm.DB, org string) int {
+	t.Helper()
+	n, err := orm.TypedQuery[schema.User](db).Filter("Owner=", org).Count(context.Background())
+	if err != nil {
+		t.Fatalf("count users in %q: %v", org, err)
+	}
+	return n
+}
+
+// PoC 1 — an attacker-owned app whose Organization names the reserved admin org
+// would provision User{Owner:"admin"} = SuperAdmin. Federation must refuse it.
+func TestRedTeam_FederationMintsSuperAdmin(t *testing.T) {
+	app, db := newServer(t)
+	m := newMockOIDC(t, fedGoogleCID) // the attacker's OWN Google account
+	seedFederationTarget(t, db, "evil-app", "attackerorg", "admin", "admin", m)
+
+	beforeAdmin := countUsersIn(t, db, "admin")
+
+	resp, _ := do(t, app, formReqNoBody("GET", PathAuthorize+"?"+federationAuthorizeQuery("evil-app").Encode()))
+	assertFederationRefused(t, resp, m)
+
+	if countUsersIn(t, db, "admin") != beforeAdmin {
+		t.Fatal("PoC: federation provisioned a user into the admin org (SuperAdmin mint)")
+	}
+	// Defense in depth: the innermost mint refuses this app directly too.
+	evil, _ := store.GetApplicationByClientId(tctx(), db, "evil-app")
+	prov, _ := store.GetProvider(tctx(), db, "admin", fedProvGoogle)
+	if _, err := linkOrProvision(tctx(), db, evil, prov, federatedIdentity{subject: "s1", email: "a@b.com", emailVerified: true}); err == nil {
+		t.Fatal("PoC: linkOrProvision minted an identity into the admin org")
+	}
+}
+
+// PoC 2 — an attacker-owned app whose Organization names a VICTIM tenant, driven
+// by a tenant-owned IdP that asserts the victim's verified email, would link the
+// attacker's identity onto the victim's account. Federation must refuse it.
+func TestRedTeam_FederationCrossTenantTakeover(t *testing.T) {
+	app, db := newServer(t)
+	seedUserInOrg(t, db, "victimorg", "ceo", "ceo@victim.com", "pw")
+
+	m := newMockOIDC(t, fedGoogleCID) // attacker's tenant-owned IdP...
+	m.email = "ceo@victim.com"        // ...asserting the victim's email, "verified"
+	m.emailVerified = true
+	m.sub = "attacker-controlled-sub"
+	seedFederationTarget(t, db, "evil-app", "attackerorg", "victimorg", "attackerorg", m)
+
+	resp, _ := do(t, app, formReqNoBody("GET", PathAuthorize+"?"+federationAuthorizeQuery("evil-app").Encode()))
+	assertFederationRefused(t, resp, m)
+
+	victim, _ := store.GetUserByName(tctx(), db, "victimorg", "ceo")
+	if victim == nil || victim.Google != "" {
+		t.Fatalf("PoC: cross-tenant identity linked onto the victim account: %+v", victim)
+	}
+}
+
+// PoC 3 — the fully tenant-owned variant: the attacker's OWN app AND OWN provider
+// (no platform resource referenced) still cannot point Organization at admin.
+func TestRedTeam_FederationMintsSuperAdmin_TenantOwnedApp(t *testing.T) {
+	app, db := newServer(t)
+	m := newMockOIDC(t, fedGoogleCID)
+	seedFederationTarget(t, db, "evil-app", "attackerorg", "admin", "attackerorg", m)
+
+	beforeAdmin := countUsersIn(t, db, "admin")
+	resp, _ := do(t, app, formReqNoBody("GET", PathAuthorize+"?"+federationAuthorizeQuery("evil-app").Encode()))
+	assertFederationRefused(t, resp, m)
+	if countUsersIn(t, db, "admin") != beforeAdmin {
+		t.Fatal("PoC: a tenant-owned app federated a user into the admin org")
+	}
+}
+
+// The legitimate case still works: a platform app (admin-owned) serving a real
+// tenant federates fine — proving the guard refuses only the escalation, not the
+// happy path.
+func TestFederation_PlatformAppLegitimateOrgAllowed(t *testing.T) {
+	app, db := newServer(t)
+	seedApp(t, db, appOpts{clientID: "webapp", redirectURIs: []string{testRedirect}}) // Owner=admin, Org=hanzo
+	m := newMockOIDC(t, fedGoogleCID)
+	seedOIDCProvider(t, db, "webapp", m)
+	runOIDCLogin(t, app, db, m, "webapp", nil)
+	if u, _ := store.GetUserByConnector(tctx(), db, "hanzo", "google", m.sub); u == nil {
+		t.Fatal("a legitimate platform-app federation must still provision a user")
+	}
+}
+
+// F2 — SSRF: an org-admin-writable IssuerUrl pointing at the cloud-metadata
+// endpoint must be refused at DIAL time (the guard is armed; no private-dial seam
+// here), so federation fails closed to the relying party and never fetches it.
+func TestFederation_SSRFPrivateIssuerRefused(t *testing.T) {
+	app, db := newServer(t)
+	seedApp(t, db, appOpts{clientID: "webapp", redirectURIs: []string{testRedirect}})
+	p := orm.New[schema.Provider](db)
+	p.Owner, p.Name = "admin", fedProvGoogle
+	p.Category, p.Type = "OAuth", "Google"
+	p.ClientId, p.ClientSecret = "cid", "secret"
+	p.IssuerUrl = "https://169.254.169.254" // link-local cloud metadata over TLS
+	p.SetId("admin/" + fedProvGoogle)
+	if err := p.CreateCtx(tctx()); err != nil {
+		t.Fatalf("seed provider: %v", err)
+	}
+	linkProvider(t, db, "webapp", fedProvGoogle)
+
+	resp, _ := do(t, app, formReqNoBody("GET", PathAuthorize+"?"+federationAuthorizeQuery("webapp").Encode()))
+	if resp.StatusCode != 302 {
+		t.Fatalf("want 302, got %d", resp.StatusCode)
+	}
+	loc := resp.Header.Get("Location")
+	if !strings.HasPrefix(loc, testRedirect) || mustQuery(t, loc).Get("error") == "" {
+		t.Fatalf("SSRF to metadata must fail closed to the RP with an error: %q", loc)
+	}
+	if strings.Contains(loc, "169.254") {
+		t.Fatal("must not redirect the browser to the metadata endpoint")
+	}
+}
+
+func tokenBody(tok map[string]any) string {
+	b, _ := json.Marshal(tok)
+	return string(b)
+}

internal/oidc/federation_unlink.go

@@ -0,0 +1,114 @@
+// Copyright 2026 Hanzo AI, Inc. All rights reserved.
+
+package oidc
+
+import (
+	"context"
+
+	"github.com/hanzoai/orm"
+	"github.com/zap-proto/zip"
+
+	"github.com/hanzoai/iam/internal/httpx"
+	"github.com/hanzoai/iam/internal/schema"
+	"github.com/hanzoai/iam/internal/store"
+)
+
+// PathUnlink removes a federated link from an account: POST /v1/iam/unlink. It is
+// the inverse of the linkOrProvision law (federation.go) — and the account is only
+// ever LEFT unlinked, never re-linked here, so re-linking still runs the full
+// verified-subject / verified-email law.
+const PathUnlink = "/v1/iam/unlink"
+
+// routeUnlink registers POST /v1/iam/unlink on the PUBLIC group. It is not
+// anonymous — it SELF-AUTHENTICATES through callerOf (session cookie, else a
+// verified bearer), exactly as get-account and userinfo do, because an oidc
+// handler cannot import authz (authz imports oidc). A caller callerOf cannot
+// resolve is refused.
+func routeUnlink(r zip.Router, db orm.DB) {
+	r.Post(PathUnlink, unlink(db))
+}
+
+// unlinkForm is the request body, matching v1's shape.
+type unlinkForm struct {
+	ProviderType string `json:"providerType"`
+	User         struct {
+		Owner string `json:"owner"`
+		Name  string `json:"name"`
+	} `json:"user"`
+}
+
+// unlink clears one provider link from one account. Two principals may do it, and
+// only two: the account holder itself, and a SuperAdmin (a member of the reserved
+// admin org, the one predicate). An ORG ADMIN deliberately may NOT — unlinking is
+// not tenant administration, it is unpicking someone's own sign-in method, so the
+// generic org-admin rule is the wrong answer here.
+//
+// A holder unlinking itself must also be permitted by the application — the
+// provider link's CanUnlink flag — so an organization that mandates federated
+// sign-in cannot have its users strand themselves. A SuperAdmin is not bound by
+// that flag; it is the platform's own recovery path. Fail-closed throughout.
+func unlink(db orm.DB) zip.Handler {
+	return func(c *zip.Ctx) error {
+		var f unlinkForm
+		if err := c.Bind(&f); err != nil {
+			return httpx.Err(c, "invalid request body")
+		}
+		ctx := c.Context()
+		caller, name, ok := callerOf(ctx, c, db)
+		if !ok {
+			return httpx.Err(c, "Please login first")
+		}
+		self := caller == f.User.Owner && name == f.User.Name
+		super := store.IsSuperAdmin(caller)
+		if !self && !super {
+			return httpx.Err(c, "you are not permitted to unlink another user's account")
+		}
+
+		u, err := store.GetUserByName(ctx, db, f.User.Owner, f.User.Name)
+		if err != nil {
+			return httpx.Err(c, err.Error())
+		}
+		if u == nil {
+			return httpx.Err(c, "the user does not exist")
+		}
+
+		// Read/write the link through the ONE connector registry (federation.go),
+		// never by reflecting the provider type onto a Go field name — the exact
+		// class of bug that made v1's GitLab unlink silently no-op (the type
+		// "GitLab" vs the column `Gitlab`).
+		b, known := connectorFor(f.ProviderType)
+		if !known {
+			return httpx.Err(c, "the provider type "+f.ProviderType+" can't be unlinked")
+		}
+		if *b.ref(u) == "" {
+			return httpx.Err(c, "please link first")
+		}
+		if self && !super && !canUnlink(ctx, db, u, f.ProviderType) {
+			return httpx.Err(c, "this provider can't be unlinked")
+		}
+
+		*b.ref(u) = ""
+		if err := saveUser(ctx, db, u); err != nil {
+			return httpx.Err(c, err.Error())
+		}
+		return httpx.Ok(c, nil)
+	}
+}
+
+// canUnlink reports whether the account's own sign-up application permits
+// unlinking this provider. An account whose application is gone, or which has no
+// link of that type declared, cannot self-unlink — the same fail-closed answer v1
+// gives.
+func canUnlink(ctx context.Context, db orm.DB, u *schema.User, providerType string) bool {
+	app, err := store.GetApplicationByName(ctx, db, "admin", u.SignupApplication)
+	if err != nil || app == nil {
+		return false
+	}
+	store.EnrichProviders(ctx, db, app)
+	for _, it := range app.Providers {
+		if it != nil && it.Provider != nil && it.Provider.Type == providerType {
+			return it.CanUnlink
+		}
+	}
+	return false
+}

internal/oidc/federation_unlink_test.go

@@ -0,0 +1,133 @@
+// Copyright 2026 Hanzo AI, Inc. All rights reserved.
+
+package oidc
+
+import (
+	"context"
+	"testing"
+
+	"github.com/hanzoai/orm"
+	"github.com/zap-proto/zip"
+
+	"github.com/hanzoai/iam/internal/schema"
+)
+
+// Unlink self-authenticates (session cookie / bearer) on the public OIDC surface,
+// so the harness only needs the one mounted group — the same one the confidential
+// flow mints the bearer from.
+func newUnlinkServer(t *testing.T) (*zip.App, orm.DB) {
+	t.Helper()
+	db := openTestDB(t)
+	app := zip.New(zip.Config{AppName: "iam2-unlink-test", DisableStartupMessage: true})
+	Route(app.Group(""), db) // public: authorize/login/token AND the self-authenticating unlink
+	return app, db
+}
+
+// linkGitHub declares a GitHub provider on the "conf" app (CanUnlink toggled) and
+// stamps a GitHub subject onto the user, whose SignupApplication is that app.
+func linkGitHub(t *testing.T, db orm.DB, user, subject string, canUnlink bool) {
+	t.Helper()
+	pv := orm.New[schema.Provider](db)
+	pv.Owner, pv.Name, pv.Category, pv.Type = "admin", "prov-github-unlink", "OAuth", "GitHub"
+	pv.SetId("admin/prov-github-unlink")
+	// Idempotent across sub-tests sharing a db is not needed (each test opens its own).
+	if err := pv.CreateCtx(context.Background()); err != nil {
+		t.Fatalf("seed provider: %v", err)
+	}
+	a, err := orm.Get[schema.Application](db, "admin/conf")
+	if err != nil {
+		t.Fatalf("load conf app: %v", err)
+	}
+	a.Providers = append(a.Providers, &schema.ProviderItem{Owner: "admin", Name: "prov-github-unlink", CanSignIn: true, CanUnlink: canUnlink})
+	if err := a.UpdateCtx(context.Background()); err != nil {
+		t.Fatalf("link provider: %v", err)
+	}
+	u := userRow(t, db, user)
+	u.GitHub = subject
+	u.SignupApplication = "conf"
+	if err := u.UpdateCtx(context.Background()); err != nil {
+		t.Fatalf("stamp connector: %v", err)
+	}
+}
+
+func doUnlink(t *testing.T, app *zip.App, bearer, providerType, owner, name string) (int, map[string]any) {
+	t.Helper()
+	req := jsonReq("POST", PathUnlink, map[string]any{
+		"providerType": providerType,
+		"user":         map[string]string{"owner": owner, "name": name},
+	})
+	req.Header.Set("Authorization", "Bearer "+bearer)
+	resp, body := do(t, app, req)
+	return resp.StatusCode, decode(t, body)
+}
+
+// The account holder unlinks its own GitHub link when the app permits it; the
+// connector column is cleared.
+func TestUnlink_SelfClearsLinkWhenPermitted(t *testing.T) {
+	app, db := newUnlinkServer(t)
+	seedApp(t, db, appOpts{clientID: "conf", secret: "s3cret", redirectURIs: []string{testRedirect}})
+	seedUser(t, db, "alice", "alice@hanzo.ai", "pw")
+	linkGitHub(t, db, "alice", "gh-alice", true)
+
+	access := accessTokenFor(t, app, "openid") // bearer for hanzo/alice
+	if _, m := doUnlink(t, app, access, "GitHub", "hanzo", "alice"); m["status"] != "ok" {
+		t.Fatalf("self-unlink failed: %v", m["msg"])
+	}
+	if got := userRow(t, db, "alice").GitHub; got != "" {
+		t.Fatalf("self-unlink did not clear the connector, got %q", got)
+	}
+}
+
+// A holder cannot unlink ANOTHER account (not self, not super), and the target's
+// link survives.
+func TestUnlink_CrossUserRefused(t *testing.T) {
+	app, db := newUnlinkServer(t)
+	seedApp(t, db, appOpts{clientID: "conf", secret: "s3cret", redirectURIs: []string{testRedirect}})
+	seedUser(t, db, "alice", "alice@hanzo.ai", "pw")
+	seedUser(t, db, "bob", "bob@hanzo.ai", "pw")
+	linkGitHub(t, db, "bob", "gh-bob", true)
+
+	access := accessTokenFor(t, app, "openid") // bearer for hanzo/alice
+	status, m := doUnlink(t, app, access, "GitHub", "hanzo", "bob")
+	if m["status"] != "error" {
+		t.Fatalf("cross-user unlink must be refused, got %v (status %d)", m, status)
+	}
+	if got := userRow(t, db, "bob").GitHub; got != "gh-bob" {
+		t.Fatalf("a non-owner removed bob's link: %q", got)
+	}
+}
+
+// When the application forbids unlinking (CanUnlink=false), a self-unlink is
+// refused — an org that mandates federated sign-in keeps its users linked.
+func TestUnlink_SelfRefusedWhenAppForbids(t *testing.T) {
+	app, db := newUnlinkServer(t)
+	seedApp(t, db, appOpts{clientID: "conf", secret: "s3cret", redirectURIs: []string{testRedirect}})
+	seedUser(t, db, "alice", "alice@hanzo.ai", "pw")
+	linkGitHub(t, db, "alice", "gh-alice", false)
+
+	access := accessTokenFor(t, app, "openid")
+	if _, m := doUnlink(t, app, access, "GitHub", "hanzo", "alice"); m["status"] != "error" {
+		t.Fatalf("self-unlink must be refused when the app forbids it, got %v", m)
+	}
+	if got := userRow(t, db, "alice").GitHub; got != "gh-alice" {
+		t.Fatalf("a forbidden unlink still cleared the connector: %q", got)
+	}
+}
+
+// An unauthenticated request is refused (the SDK envelope carries status:error on
+// a 200, the casibase contract) and clears nothing.
+func TestUnlink_RequiresAuthentication(t *testing.T) {
+	app, db := newUnlinkServer(t)
+	seedApp(t, db, appOpts{clientID: "conf", secret: "s3cret", redirectURIs: []string{testRedirect}})
+	seedUser(t, db, "alice", "alice@hanzo.ai", "pw")
+	linkGitHub(t, db, "alice", "gh-alice", true)
+
+	req := jsonReq("POST", PathUnlink, map[string]any{"providerType": "GitHub", "user": map[string]string{"owner": "hanzo", "name": "alice"}})
+	_, body := do(t, app, req) // no bearer, no session cookie
+	if m := decode(t, body); m["status"] != "error" {
+		t.Fatalf("unlink without authentication must be refused, got %v", m)
+	}
+	if got := userRow(t, db, "alice").GitHub; got != "gh-alice" {
+		t.Fatal("an unauthenticated request cleared the connector")
+	}
+}

internal/oidc/frontdoor.go

@@ -0,0 +1,167 @@
+// Copyright 2026 Hanzo AI, Inc. All rights reserved.
+
+package oidc
+
+import (
+	"strings"
+
+	"github.com/hanzoai/orm"
+	"github.com/zap-proto/zip"
+
+	"github.com/hanzoai/iam/internal/httpx"
+	"github.com/hanzoai/iam/internal/schema"
+	"github.com/hanzoai/iam/internal/store"
+)
+
+// Front-door JSON endpoints the @hanzo/iam SDK + hanzo.id portal call: the login
+// UI descriptors (get-app-login, auth/methods), the account read (get-account),
+// account creation (signup), and OTP send (send-verification-code). Login itself
+// is routeLogin; the OIDC/OAuth surface is Route.
+const (
+	PathGetAppLogin = "/v1/iam/get-app-login"
+	PathAuthMethods = "/v1/iam/auth/methods"
+)
+
+// routeFrontDoor registers the front-door endpoints the hosted hanzo.id portal
+// and the @hanzo/iam SDK call, on the PUBLIC group r. Each handler RESOLVES the
+// caller itself (callerOf: session cookie first, then bearer) and SELF-SCOPES to
+// that caller, so — like the rest of this group — they are reachable without a
+// Guard-verified bearer yet never act on anyone but the resolved caller.
+func routeFrontDoor(r zip.Router, db orm.DB) {
+	r.Get(PathGetAppLogin, getAppLogin(db))
+	r.Get(PathAuthMethods, authMethods(db))
+	// get-account is anonymous-safe (returns {status:"error"} unauthenticated)
+	// and a security contract — the gateway admin-guard reads its `owner`.
+	r.Get(PathGetAccount, getAccount(db))
+	// Account creation + email/phone OTP send. signup is JSON; send-verification-code
+	// is multipart/form-data (HIP-0111 §4 invariant), read via fiber's FormValue.
+	r.Post(PathSignup, signupHandler(db))
+	r.Post(PathSendVerificationCode, sendVerificationCode(db))
+
+	// The session/identity front door the console drives once a user is signed in:
+	// signin (the code→session exchange), whoami (lightweight identity), onboard
+	// (first-run org creation + move), update-preferences (self, shallow-merge), and
+	// linked-accounts (the caller's linked identities).
+	r.Post(PathSignin, signinHandler(db))
+	r.Get(PathWhoami, whoamiHandler(db))
+	r.Post(PathOnboard, onboardHandler(db))
+	r.Post(PathUpdatePreferences, updatePreferencesHandler(db))
+	r.Get(PathLinkedAccounts, linkedAccountsHandler(db))
+}
+
+// getAppLogin resolves an application by clientId and returns it with the
+// ClientSecret masked and each provider link enriched with its shared provider
+// record — the canonical source of truth the login UI reads to decide which
+// sign-in methods to render. Mirrors the v1 Casdoor get-app-login contract
+// (Response envelope, data = the masked application).
+func getAppLogin(db orm.DB) zip.Handler {
+	return func(c *zip.Ctx) error {
+		if rt := c.Query("responseType"); rt != "" && rt != "code" {
+			return httpx.Err(c, "response_type is required (must be code)")
+		}
+		clientId := c.Query("clientId")
+		if clientId == "" {
+			return httpx.Err(c, "clientId is required")
+		}
+		app, err := store.GetApplicationByClientId(c.Context(), db, clientId)
+		if err != nil {
+			return httpx.Err(c, err.Error())
+		}
+		if app == nil {
+			return httpx.Err(c, "the application does not exist")
+		}
+		store.EnrichProviders(c.Context(), db, app)
+		return httpx.Ok(c, maskApp(app))
+	}
+}
+
+// authMethods reports the enabled sign-in methods for an application so the SDK
+// <Login> self-configures instead of hard-coding a provider list. This endpoint
+// does NOT exist in v1 — it is the clean seam that lets one <Login> render the
+// right buttons for any app. Pure read over the resolved application.
+func authMethods(db orm.DB) zip.Handler {
+	return func(c *zip.Ctx) error {
+		clientId := c.Query("clientId")
+		if clientId == "" {
+			return httpx.Err(c, "clientId is required")
+		}
+		app, err := store.GetApplicationByClientId(c.Context(), db, clientId)
+		if err != nil {
+			return httpx.Err(c, err.Error())
+		}
+		if app == nil {
+			return httpx.Err(c, "the application does not exist")
+		}
+		store.EnrichProviders(c.Context(), db, app)
+
+		oauth := []map[string]string{}
+		web3 := false
+		for _, it := range app.Providers {
+			if it == nil || it.Provider == nil || !it.CanSignIn {
+				continue
+			}
+			if !isConfigured(it.Provider) {
+				continue // hidden until real creds land — never a dead-end button
+			}
+			switch strings.ToLower(it.Provider.Category) {
+			case "web3":
+				web3 = true
+			case "oauth":
+				oauth = append(oauth, map[string]string{
+					"name": it.Name,
+					"type": it.Provider.Type,
+					"logo": it.Provider.CustomLogo,
+				})
+			}
+		}
+		return httpx.Ok(c, map[string]any{
+			"password": app.EnablePassword,
+			"code":     app.EnableCodeSignin,
+			"webauthn": app.EnableWebAuthn,
+			"web3":     web3,
+			"oauth":    oauth,
+			"signup":   app.EnableSignUp,
+		})
+	}
+}
+
+// isConfigured reports whether a provider holds a real (non-placeholder)
+// credential — the guard that keeps an unconfigured provider's button hidden so
+// it never dead-ends the OAuth redirect.
+func isConfigured(p *schema.Provider) bool {
+	if p == nil {
+		return false
+	}
+	// Web3 is native challenge/response — no OAuth client to configure.
+	if strings.EqualFold(p.Category, "Web3") {
+		return true
+	}
+	id := strings.ToLower(strings.TrimSpace(p.ClientId))
+	if id == "" {
+		return false
+	}
+	return !strings.Contains(id, "placeholder") &&
+		!strings.HasPrefix(id, "your-") &&
+		!strings.HasPrefix(id, "xxx") &&
+		!strings.Contains(id, "change")
+}
+
+// maskApp returns a copy-safe view of the application with the client secret and
+// every provider's secret removed — get-app-login is called by the browser, so
+// no secret may cross it.
+func maskApp(app *schema.Application) *schema.Application {
+	if app == nil {
+		return nil
+	}
+	masked := *app
+	masked.ClientSecret = ""
+	for _, it := range masked.Providers {
+		if it != nil && it.Provider != nil {
+			p := *it.Provider
+			p.ClientSecret = ""
+			p.ClientSecret2 = ""
+			it.Provider = &p
+		}
+	}
+	return &masked
+}

internal/oidc/frontdoor_e2e_test.go

@@ -0,0 +1,261 @@
+// Copyright 2026 Hanzo AI, Inc. All rights reserved.
+package oidc
+
+import (
+	"context"
+	"net/url"
+	"strings"
+	"testing"
+
+	"github.com/zap-proto/zip"
+
+	"github.com/hanzoai/iam/internal/schema"
+	"github.com/hanzoai/iam/internal/store"
+)
+
+// sessionCookieFor drives a bare (type=login) portal sign-in for hanzo/alice and
+// returns the "name=value" of the session cookie it set — the credential the
+// front-door session routes resolve the caller from.
+func sessionCookieFor(t *testing.T, app *zip.App) string {
+	t.Helper()
+	form := url.Values{
+		"organization": {"hanzo"}, "application": {"conf"},
+		"username": {"alice"}, "password": {"pw"}, "type": {"login"},
+	}
+	resp, body := do(t, app, formReq("POST", PathLogin, form))
+	if resp.StatusCode != 200 || decode(t, body)["status"] != "ok" {
+		t.Fatalf("login failed: %s", body)
+	}
+	return cookieKV(resp.Header.Get("Set-Cookie"))
+}
+
+// signin exchanges an authorization code for a session and returns the caller's
+// redacted account — the same envelope get-account returns, so the console's
+// post<Account>('iam/signin') resolves the signed-in user in one call.
+func TestSignin_CodeExchangeSetsSessionAndReturnsAccount(t *testing.T) {
+	app, db := newServer(t)
+	seedApp(t, db, appOpts{clientID: "conf", secret: "s3cret", redirectURIs: []string{testRedirect}})
+	seedRichUser(t, db)
+
+	code, _, _ := loginForCode(t, app, map[string]string{
+		"organization": "hanzo", "application": "conf", "clientId": "conf",
+		"username": "alice", "password": "pw",
+	})
+	if code == "" {
+		t.Fatal("login (type=code) minted no code")
+	}
+
+	resp, body := do(t, app, formReqNoBody("POST", PathSignin+"?code="+code))
+	env := decode(t, body)
+	if resp.StatusCode != 200 || env["status"] != "ok" {
+		t.Fatalf("signin status=%d body=%s", resp.StatusCode, body)
+	}
+	if env["sub"] != "hanzo/alice" || env["name"] != "alice" {
+		t.Errorf("signin sub/name = %v/%v, want hanzo/alice / alice", env["sub"], env["name"])
+	}
+	data, _ := env["data"].(map[string]any)
+	if data["owner"] != "hanzo" {
+		t.Errorf("signin data.owner = %v, want hanzo", data["owner"])
+	}
+	if v, ok := data["passwordHash"]; ok && v != "" {
+		t.Errorf("signin leaked passwordHash")
+	}
+	// It establishes the durable session get-account resolves from.
+	cookie := resp.Header.Get("Set-Cookie")
+	if !strings.HasPrefix(cookie, "hanzo_session=") {
+		t.Fatalf("signin did not set the session cookie: %q", cookie)
+	}
+	req := formReqNoBody("GET", PathGetAccount)
+	req.Header.Set("Cookie", cookieKV(cookie))
+	resp2, body2 := do(t, app, req)
+	if resp2.StatusCode != 200 || decode(t, body2)["status"] != "ok" {
+		t.Fatalf("get-account via the signin cookie failed: %s", body2)
+	}
+}
+
+// The code is single-use: a replay after redemption is refused (no second session).
+func TestSignin_ReplayedCodeRejected(t *testing.T) {
+	app, db := newServer(t)
+	seedApp(t, db, appOpts{clientID: "conf", secret: "s3cret", redirectURIs: []string{testRedirect}})
+	seedRichUser(t, db)
+
+	code, _, _ := loginForCode(t, app, map[string]string{
+		"organization": "hanzo", "application": "conf", "clientId": "conf",
+		"username": "alice", "password": "pw",
+	})
+	if _, body := do(t, app, formReqNoBody("POST", PathSignin+"?code="+code)); decode(t, body)["status"] != "ok" {
+		t.Fatalf("first signin should succeed: %s", body)
+	}
+	_, body := do(t, app, formReqNoBody("POST", PathSignin+"?code="+code))
+	if decode(t, body)["status"] != "error" {
+		t.Fatalf("replayed code must be refused, got: %s", body)
+	}
+}
+
+// whoami resolves the caller from the session cookie and returns the lightweight
+// identity; an anonymous caller gets {status:"error"}, never a leak.
+func TestWhoami_CookieResolvesIdentity(t *testing.T) {
+	app, db := newServer(t)
+	seedApp(t, db, appOpts{clientID: "conf", secret: "s3cret", redirectURIs: []string{testRedirect}})
+	seedRichUser(t, db)
+	cookie := sessionCookieFor(t, app)
+
+	req := formReqNoBody("GET", PathWhoami)
+	req.Header.Set("Cookie", cookie)
+	resp, body := do(t, app, req)
+	env := decode(t, body)
+	if resp.StatusCode != 200 || env["status"] != "ok" || env["sub"] != "hanzo/alice" {
+		t.Fatalf("whoami via cookie: status=%d body=%s", resp.StatusCode, body)
+	}
+	data, _ := env["data"].(map[string]any)
+	if data["owner"] != "hanzo" || data["name"] != "alice" || data["id"] != "hanzo/alice" {
+		t.Errorf("whoami identity = %v, want owner/name/id = hanzo/alice/hanzo/alice", data)
+	}
+
+	// Anonymous → error, no data.
+	_, anon := do(t, app, formReqNoBody("GET", PathWhoami))
+	if e := decode(t, anon); e["status"] != "error" || e["data"] != nil {
+		t.Fatalf("anonymous whoami must be error with no data: %s", anon)
+	}
+}
+
+// update-preferences shallow-merges: a second patch adds a key without clobbering
+// the first, and the merged object is returned + persisted on the caller's row.
+func TestUpdatePreferences_ShallowMergeRoundTrip(t *testing.T) {
+	app, db := newServer(t)
+	seedApp(t, db, appOpts{clientID: "conf", secret: "s3cret", redirectURIs: []string{testRedirect}})
+	seedRichUser(t, db)
+	cookie := sessionCookieFor(t, app)
+
+	post := func(patch any) map[string]any {
+		req := jsonReq("POST", PathUpdatePreferences, patch)
+		req.Header.Set("Cookie", cookie)
+		resp, body := do(t, app, req)
+		env := decode(t, body)
+		if resp.StatusCode != 200 || env["status"] != "ok" {
+			t.Fatalf("update-preferences: status=%d body=%s", resp.StatusCode, body)
+		}
+		data, _ := env["data"].(map[string]any)
+		return data
+	}
+
+	if got := post(map[string]any{"onboarding_completed": true}); got["onboarding_completed"] != true {
+		t.Fatalf("first patch not reflected: %v", got)
+	}
+	got := post(map[string]any{"theme": "dark"})
+	if got["onboarding_completed"] != true || got["theme"] != "dark" {
+		t.Fatalf("second patch clobbered the first (want both keys): %v", got)
+	}
+
+	// Persisted on the row — a fresh read shows the merged blob under hanzo.preferences.
+	u, _ := store.GetUserByName(context.Background(), db, "hanzo", "alice")
+	if u == nil || !strings.Contains(u.Properties[preferencesKey], "onboarding_completed") ||
+		!strings.Contains(u.Properties[preferencesKey], "theme") {
+		t.Fatalf("preferences not persisted: %+v", u.Properties)
+	}
+}
+
+// onboard creates the named org and MOVES the caller into it as admin (their owner
+// becomes the new slug); the console reads {org:<slug>} and re-authenticates.
+func TestOnboard_CreatesOrgAndMovesCaller(t *testing.T) {
+	app, db := newServer(t)
+	seedApp(t, db, appOpts{clientID: "conf", secret: "s3cret", redirectURIs: []string{testRedirect}})
+	seedRichUser(t, db)
+	cookie := sessionCookieFor(t, app)
+
+	req := jsonReq("POST", PathOnboard, map[string]any{"name": "Acme Inc"})
+	req.Header.Set("Cookie", cookie)
+	resp, body := do(t, app, req)
+	env := decode(t, body)
+	if resp.StatusCode != 200 || env["org"] != "acme-inc" {
+		t.Fatalf("onboard status=%d body=%s (want {org:acme-inc})", resp.StatusCode, body)
+	}
+
+	ctx := context.Background()
+	if org, _ := store.GetOrganizationByName(ctx, db, "acme-inc"); org == nil || org.Owner != "admin" {
+		t.Fatalf("onboard did not create the acme-inc org: %+v", org)
+	}
+	// alice moved out of hanzo and into acme-inc as admin.
+	if old, _ := store.GetUserByName(ctx, db, "hanzo", "alice"); old != nil {
+		t.Errorf("alice was not moved out of hanzo")
+	}
+	moved, _ := store.GetUserByName(ctx, db, "acme-inc", "alice")
+	if moved == nil || !moved.IsAdmin {
+		t.Fatalf("alice not moved into acme-inc as admin: %+v", moved)
+	}
+}
+
+// The one-click personal path creates a `<username>` org.
+func TestOnboard_PersonalOrg(t *testing.T) {
+	app, db := newServer(t)
+	seedApp(t, db, appOpts{clientID: "conf", secret: "s3cret", redirectURIs: []string{testRedirect}})
+	seedRichUser(t, db)
+	cookie := sessionCookieFor(t, app)
+
+	req := jsonReq("POST", PathOnboard, map[string]any{"personal": true})
+	req.Header.Set("Cookie", cookie)
+	resp, body := do(t, app, req)
+	if env := decode(t, body); resp.StatusCode != 200 || env["org"] != "alice" {
+		t.Fatalf("personal onboard status=%d body=%s (want {org:alice})", resp.StatusCode, body)
+	}
+	if org, _ := store.GetOrganizationByName(context.Background(), db, "alice"); org == nil || !org.IsPersonal {
+		t.Fatalf("personal org not created/flagged: %+v", org)
+	}
+}
+
+// A reserved slug (an IAM system owner) is refused — a customer can never become admin.
+func TestOnboard_ReservedRefused(t *testing.T) {
+	app, db := newServer(t)
+	seedApp(t, db, appOpts{clientID: "conf", secret: "s3cret", redirectURIs: []string{testRedirect}})
+	seedRichUser(t, db)
+	cookie := sessionCookieFor(t, app)
+
+	req := jsonReq("POST", PathOnboard, map[string]any{"name": "admin"})
+	req.Header.Set("Cookie", cookie)
+	resp, body := do(t, app, req)
+	if resp.StatusCode == 200 || !strings.Contains(string(body), "reserved") {
+		t.Fatalf("reserved org must be refused: status=%d body=%s", resp.StatusCode, body)
+	}
+}
+
+// linked-accounts returns the caller's non-empty connector columns and nothing else.
+func TestLinkedAccounts_ListsConnectorColumns(t *testing.T) {
+	app, db := newServer(t)
+	seedApp(t, db, appOpts{clientID: "conf", secret: "s3cret", redirectURIs: []string{testRedirect}})
+	seedRichUser(t, db)
+	// Link a GitHub identity to alice.
+	u, _ := store.GetUserByName(context.Background(), db, "hanzo", "alice")
+	u.GitHub = "octocat"
+	if err := u.UpdateCtx(context.Background()); err != nil {
+		t.Fatalf("link github: %v", err)
+	}
+	cookie := sessionCookieFor(t, app)
+
+	req := formReqNoBody("GET", PathLinkedAccounts)
+	req.Header.Set("Cookie", cookie)
+	resp, body := do(t, app, req)
+	if resp.StatusCode != 200 || !strings.Contains(string(body), "github") || !strings.Contains(string(body), "octocat") {
+		t.Fatalf("linked-accounts: status=%d body=%s", resp.StatusCode, body)
+	}
+}
+
+// linkedAccountsOf reflects only the connector columns — never Owner/Name/Email.
+func TestLinkedAccountsOf_OnlyConnectors(t *testing.T) {
+	u := &schema.User{Owner: "hanzo", Name: "alice", Email: "a@x.io", GitHub: "octocat", Google: "g-1"}
+	got := linkedAccountsOf(u)
+	seen := map[string]string{}
+	for _, la := range got {
+		seen[la.Provider] = la.Subject
+	}
+	if seen["github"] != "octocat" || seen["google"] != "g-1" {
+		t.Fatalf("missing a linked connector: %v", got)
+	}
+	for _, forbidden := range []string{"owner", "name", "email"} {
+		if _, bad := seen[forbidden]; bad {
+			t.Errorf("linkedAccountsOf leaked a non-connector field %q", forbidden)
+		}
+	}
+	if len(got) != 2 {
+		t.Errorf("want exactly 2 linked accounts, got %d: %v", len(got), got)
+	}
+}

internal/oidc/getaccount.go

@@ -0,0 +1,97 @@
+// Copyright 2026 Hanzo AI, Inc. All rights reserved.
+package oidc
+
+import (
+	"context"
+
+	"github.com/hanzoai/orm"
+	"github.com/zap-proto/zip"
+
+	"github.com/hanzoai/iam/internal/httpx"
+	"github.com/hanzoai/iam/internal/sessions"
+	"github.com/hanzoai/iam/internal/store"
+)
+
+// PathGetAccount is the native front-door account endpoint — what the hanzo.id
+// portal's account page and the gateway admin-guard call.
+//
+// SECURITY CONTRACT. The gateway admin-guard derives the global-admin
+// (SuperAdmin) predicate from the `owner` this returns — a caller is a global
+// admin iff `data.owner == AdminOrg` (gateway/cmd/admin-guard). So the response
+// shape MUST match v1 exactly — {status, sub, name, data:<user>, data2:<org>} —
+// and every secret (password hash, access secret, TOTP, recovery codes) MUST be
+// redacted. Anonymous callers get {status:"error"} (200, casibase convention),
+// never a leak: the admin-guard reads status=="error" → not-admin, fail-closed.
+const PathGetAccount = "/v1/iam/get-account"
+
+// accountResponse mirrors v1's Response for get-account (the casibase envelope).
+type accountResponse struct {
+	Status string `json:"status"`
+	Msg    string `json:"msg,omitempty"`
+	Sub    string `json:"sub,omitempty"`
+	Name   string `json:"name,omitempty"`
+	Data   any    `json:"data,omitempty"`
+	Data2  any    `json:"data2,omitempty"`
+}
+
+// getAccount resolves the signed-in caller and returns their REDACTED account +
+// organization. Resolution (callerOf) is by session cookie first — the portal +
+// gateway-admin-guard path — then bearer access token — the API path.
+func getAccount(db orm.DB) zip.Handler {
+	return func(c *zip.Ctx) error {
+		ctx := c.Context()
+
+		owner, name, ok := callerOf(ctx, c, db)
+		if !ok {
+			return c.JSON(200, accountResponse{Status: "error", Msg: "please sign in first"})
+		}
+		env, status := accountEnvelopeFor(ctx, db, owner, name)
+		return c.JSON(status, env)
+	}
+}
+
+// accountEnvelopeFor builds the get-account envelope for an already-resolved
+// caller: the REDACTED user + organization in the casibase shape, or an error
+// envelope when the user or org lookup fails. It is the ONE place the account
+// envelope is assembled, shared by get-account and signin (the code→session
+// exchange), so the two can never drift. status is the HTTP code to return with
+// it (200 for both ok and the casibase "error" convention, 500 on a store fault).
+func accountEnvelopeFor(ctx context.Context, db orm.DB, owner, name string) (accountResponse, int) {
+	user, err := store.GetUserByName(ctx, db, owner, name)
+	if err != nil {
+		return accountResponse{Status: "error", Msg: "server_error"}, 500
+	}
+	if user == nil {
+		return accountResponse{Status: "error", Msg: "the user does not exist"}, 200
+	}
+	org, err := store.GetOrganizationByName(ctx, db, user.Owner)
+	if err != nil {
+		return accountResponse{Status: "error", Msg: "server_error"}, 500
+	}
+	return accountResponse{
+		Status: "ok",
+		Sub:    owner + "/" + name,
+		Name:   user.Name,
+		Data:   user.Mask(), // owner + isAdmin survive; every secret stripped
+		Data2:  org.Mask(),  // org master/default passwords masked
+	}, 200
+}
+
+// callerOf resolves the signed-in principal by SESSION COOKIE first (the portal
+// and gateway-admin-guard path) then bearer access token (the API path) — two
+// credentials, one identity. ok=false means no valid session or token.
+func callerOf(ctx context.Context, c *zip.Ctx, db orm.DB) (owner, name string, ok bool) {
+	if o, n, ok := sessions.Resolve(ctx, c.Fiber(), db); ok {
+		return o, n, true
+	}
+	bearer := httpx.Bearer(c)
+	if bearer == "" {
+		return "", "", false
+	}
+	claims, err := verifyToken(ctx, db, bearer)
+	if err != nil {
+		return "", "", false
+	}
+	o, n := splitSub(claims.Subject)
+	return o, n, true
+}

internal/oidc/getaccount_test.go

@@ -0,0 +1,101 @@
+// Copyright 2026 Hanzo AI, Inc. All rights reserved.
+package oidc
+
+import (
+	"testing"
+
+	"github.com/zap-proto/zip"
+
+	"github.com/hanzoai/iam/internal/schema"
+)
+
+// getAccountReq drives GET /v1/iam/get-account with an optional bearer,
+// returning the status code and decoded envelope.
+func getAccountReq(t *testing.T, app *zip.App, bearer string) (int, map[string]any) {
+	t.Helper()
+	req := formReqNoBody("GET", PathGetAccount)
+	if bearer != "" {
+		req.Header.Set("Authorization", "Bearer "+bearer)
+	}
+	resp, body := do(t, app, req)
+	return resp.StatusCode, decode(t, body)
+}
+
+// The bearer path resolves the caller and returns a REDACTED account whose
+// `owner` (the admin-guard's SuperAdmin input) is correct and whose secrets are
+// stripped — the security contract, end to end through the real router.
+func TestGetAccount_BearerReturnsRedactedAccount(t *testing.T) {
+	app, db := newServer(t)
+	seedApp(t, db, appOpts{clientID: "conf", secret: "s3cret", redirectURIs: []string{testRedirect}})
+	seedRichUser(t, db)
+
+	access := accessTokenFor(t, app, "openid profile email")
+	status, env := getAccountReq(t, app, access)
+	if status != 200 || env["status"] != "ok" {
+		t.Fatalf("status=%d env=%v, want 200 ok", status, env)
+	}
+	if env["sub"] != "hanzo/alice" || env["name"] != "alice" {
+		t.Errorf("sub/name = %v/%v, want hanzo/alice / alice", env["sub"], env["name"])
+	}
+	data, ok := env["data"].(map[string]any)
+	if !ok {
+		t.Fatalf("data is not an object: %v", env["data"])
+	}
+	// The admin-guard reads data.owner — it MUST be present and correct.
+	if data["owner"] != "hanzo" {
+		t.Errorf("data.owner = %v, want hanzo (the admin-guard SuperAdmin input)", data["owner"])
+	}
+	// Every secret MUST be stripped — a leak here hands out password hashes.
+	for _, secret := range []string{"passwordHash", "passwordSalt", "accessSecret", "accessSecretHash", "totpSecret", "accessToken"} {
+		if v, present := data[secret]; present && v != "" {
+			t.Errorf("get-account leaked %q = %v", secret, v)
+		}
+	}
+}
+
+// Anonymous callers get {status:"error"} (200, casibase convention) — never a
+// leak and never a 5xx. The admin-guard reads status=="error" → not-admin,
+// fail-closed. Same for an invalid bearer.
+func TestGetAccount_AnonymousIsErrorNotLeak(t *testing.T) {
+	app, db := newServer(t)
+	seedApp(t, db, appOpts{clientID: "conf", secret: "s3cret", redirectURIs: []string{testRedirect}})
+	seedRichUser(t, db)
+
+	for name, bearer := range map[string]string{"no bearer": "", "garbage bearer": "not-a-real-token"} {
+		t.Run(name, func(t *testing.T) {
+			status, env := getAccountReq(t, app, bearer)
+			if status != 200 || env["status"] != "error" {
+				t.Fatalf("status=%d env=%v, want 200 error", status, env)
+			}
+			if _, leaked := env["data"]; leaked {
+				t.Errorf("anonymous get-account must carry no data, got %v", env["data"])
+			}
+		})
+	}
+}
+
+// Redact keeps the admin-guard fields (owner, isAdmin) while stripping every
+// secret — the invariant get-account relies on. Unit-level, no db/login flow.
+func TestUserMask_KeepsAdminFieldsStripsSecrets(t *testing.T) {
+	u := &schema.User{
+		Owner:        "admin",
+		Name:         "root",
+		IsAdmin:      true,
+		PasswordHash: "$argon2id$v=19$…",
+		PasswordSalt: "salt",
+		AccessSecret: "sk_live_abc",
+		TotpSecret:   "JBSWY3DPEHPK3PXP",
+	}
+	got := u.Mask()
+	if got.Owner != "admin" || !got.IsAdmin {
+		t.Errorf("Mask dropped an admin-guard field: owner=%q isAdmin=%v", got.Owner, got.IsAdmin)
+	}
+	if got.PasswordHash != "" || got.PasswordSalt != "" || got.AccessSecret != "" || got.TotpSecret != "" {
+		t.Errorf("Mask left a secret: %+v", got)
+	}
+	// Mask returns a COPY — the login-verify path must still see the live hash on
+	// the original row, so masking a response can never blank it.
+	if u.PasswordHash == "" {
+		t.Errorf("Mask must NOT mutate the receiver, but the original's PasswordHash was cleared")
+	}
+}

internal/oidc/harness_test.go

@@ -0,0 +1,172 @@
+// Copyright 2026 Hanzo AI, Inc. All rights reserved.
+
+package oidc
+
+import (
+	"bytes"
+	"context"
+	"crypto/rand"
+	"crypto/rsa"
+	"encoding/json"
+	"io"
+	"net/http"
+	"net/http/httptest"
+	"net/url"
+	"strings"
+	"sync"
+	"testing"
+
+	"github.com/hanzoai/orm"
+	"github.com/zap-proto/zip"
+
+	"github.com/hanzoai/iam/internal/schema"
+)
+
+// HTTP-level test harness: mount the whole OIDC surface on a fresh store and
+// drive it through the real router (app.Fiber().Test), so every test exercises
+// the wire contract a client sees — status codes, headers, redirects, bodies.
+
+// sharedKey is one RSA key reused across tests (keygen is the slow part; the
+// crypto under test is identical regardless of which key it is).
+var (
+	sharedKeyOnce sync.Once
+	sharedKeyVal  *rsa.PrivateKey
+)
+
+func sharedKey(t *testing.T) *rsa.PrivateKey {
+	t.Helper()
+	sharedKeyOnce.Do(func() {
+		k, err := rsa.GenerateKey(rand.Reader, 2048)
+		if err != nil {
+			panic(err)
+		}
+		sharedKeyVal = k
+	})
+	return sharedKeyVal
+}
+
+// appOpts configures a seeded OAuth application.
+type appOpts struct {
+	clientID     string
+	secret       string // "" → public (PKCE) client
+	redirectURIs []string
+	refreshHours float64
+	shared       bool     // IsShared → accepts users from any org
+	signup       bool     // EnableSignUp → the app allows new-account creation
+	grants       []string // declared OAuth grants; a grant absent here is refused
+}
+
+// tctx is the background context used by the test seed helpers.
+func tctx() context.Context { return context.Background() }
+
+// newServer mounts the full OIDC surface on a fresh SQLite store.
+func newServer(t *testing.T) (*zip.App, orm.DB) {
+	t.Helper()
+	db := openTestDB(t)
+	app := zip.New(zip.Config{AppName: "iam2-test", DisableStartupMessage: true})
+	// The whole OIDC surface is the pre-authentication PUBLIC group; a root
+	// (empty-prefix) router registers it at its absolute paths, no Guard.
+	Route(app.Group(""), db)
+	return app, db
+}
+
+// seedRSACert creates a named RS256 signing cert holding the shared key.
+func seedRSACert(t *testing.T, db orm.DB, name string) {
+	t.Helper()
+	c := orm.New[schema.Cert](db)
+	c.Owner = "admin"
+	c.Name = name
+	c.CryptoAlgorithm = "RS256"
+	c.PrivateKey = rsaKeyToPEM(t, sharedKey(t))
+	c.SetId("admin/" + name)
+	if err := c.CreateCtx(context.Background()); err != nil {
+		t.Fatalf("seed cert: %v", err)
+	}
+}
+
+// seedApp creates an application (org "hanzo") with the given options and a
+// shared RS256 cert.
+func seedApp(t *testing.T, db orm.DB, o appOpts) *schema.Application {
+	t.Helper()
+	seedRSACert(t, db, "cert-"+o.clientID)
+	a := orm.New[schema.Application](db)
+	a.Owner = "admin"
+	a.Name = o.clientID
+	a.ClientId = o.clientID
+	a.ClientSecret = o.secret
+	a.Organization = "hanzo"
+	a.Cert = "cert-" + o.clientID
+	a.EnablePassword = true
+	a.EnableSignUp = o.signup
+	a.ExpireInHours = 1
+	a.RefreshExpireInHours = o.refreshHours
+	a.RedirectUris = o.redirectURIs
+	a.IsShared = o.shared
+	a.GrantTypes = o.grants
+	a.SetId("admin/" + o.clientID)
+	if err := a.CreateCtx(context.Background()); err != nil {
+		t.Fatalf("seed app: %v", err)
+	}
+	return a
+}
+
+// --- HTTP helpers ---
+
+func formReq(method, path string, form url.Values) *http.Request {
+	req := httptest.NewRequest(method, path, strings.NewReader(form.Encode()))
+	req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
+	req.Host = "hanzo.id"
+	return req
+}
+
+func formReqNoBody(method, path string) *http.Request {
+	req := httptest.NewRequest(method, path, nil)
+	req.Host = "hanzo.id"
+	return req
+}
+
+func jsonReq(method, path string, body any) *http.Request {
+	b, _ := json.Marshal(body)
+	req := httptest.NewRequest(method, path, bytes.NewReader(b))
+	req.Header.Set("Content-Type", "application/json")
+	req.Host = "hanzo.id"
+	return req
+}
+
+func do(t *testing.T, app *zip.App, req *http.Request) (*http.Response, []byte) {
+	t.Helper()
+	resp, err := app.Fiber().Test(req)
+	if err != nil {
+		t.Fatalf("test request %s %s: %v", req.Method, req.URL.Path, err)
+	}
+	body, _ := io.ReadAll(resp.Body)
+	return resp, body
+}
+
+func decode(t *testing.T, body []byte) map[string]any {
+	t.Helper()
+	var m map[string]any
+	if err := json.Unmarshal(body, &m); err != nil {
+		t.Fatalf("decode json %q: %v", string(body), err)
+	}
+	return m
+}
+
+// loginForCode drives POST /v1/iam/login (type=code) and returns the minted
+// authorization code from the Response envelope.
+func loginForCode(t *testing.T, app *zip.App, f map[string]string) (string, *http.Response, []byte) {
+	t.Helper()
+	f["type"] = "code"
+	resp, body := do(t, app, jsonReq("POST", PathLogin, f))
+	m := decode(t, body)
+	code, _ := m["data"].(string)
+	return code, resp, body
+}
+
+// exchangeCode drives POST /v1/iam/oauth/token for the authorization_code grant.
+func exchangeCode(t *testing.T, app *zip.App, form url.Values) (*http.Response, map[string]any) {
+	t.Helper()
+	form.Set("grant_type", "authorization_code")
+	resp, body := do(t, app, formReq("POST", PathToken, form))
+	return resp, decode(t, body)
+}

internal/oidc/helpers_test.go

@@ -0,0 +1,23 @@
+// Copyright 2026 Hanzo AI, Inc. All rights reserved.
+
+package oidc
+
+import (
+	"crypto/rand"
+	"crypto/rsa"
+	"crypto/x509"
+	"encoding/pem"
+	"testing"
+)
+
+// rsaGenTest generates a 2048-bit RSA key (JWKS minimum) for tests.
+func rsaGenTest() (*rsa.PrivateKey, error) {
+	return rsa.GenerateKey(rand.Reader, 2048)
+}
+
+// rsaKeyToPEM encodes an RSA private key as PKCS#1 PEM (what a Cert row holds).
+func rsaKeyToPEM(t *testing.T, k *rsa.PrivateKey) string {
+	t.Helper()
+	der := x509.MarshalPKCS1PrivateKey(k)
+	return string(pem.EncodeToMemory(&pem.Block{Type: "RSA PRIVATE KEY", Bytes: der}))
+}

internal/oidc/introspect_revoke.go

@@ -0,0 +1,162 @@
+// Copyright 2026 Hanzo AI, Inc. All rights reserved.
+
+package oidc
+
+import (
+	"context"
+	"crypto/subtle"
+
+	"github.com/hanzoai/orm"
+	"github.com/zap-proto/zip"
+
+	"github.com/hanzoai/iam/internal/store"
+)
+
+// RFC 7662 Token Introspection + RFC 7009 Token Revocation — the two standard
+// token-management endpoints a resource server / confidential client uses. Both
+// are POST, client-authenticated (client_secret_basic or _post, constant-time),
+// on the OAuth token surface. Introspection reports whether a token is currently
+// active — JWT-valid AND its grant row still exists, so a REVOKED token reads
+// inactive — and returns its claims when active. Revocation deletes the grant
+// row (the whole refresh-rotation family for a refresh token) and always answers
+// 200 (RFC 7009 §2.2: an invalid/unknown token is not an error, so the endpoint
+// is no token-existence oracle).
+const (
+	PathIntrospect = "/v1/iam/oauth/introspect"
+	PathRevoke     = "/v1/iam/oauth/revoke"
+)
+
+// routeIntrospectRevoke registers the introspection + revocation endpoints on the
+// PUBLIC group r (client-authenticated, not Bearer-gated).
+func routeIntrospectRevoke(r zip.Router, db orm.DB) {
+	r.Post(PathIntrospect, introspectHandler(db))
+	r.Post(PathRevoke, revokeHandler(db))
+}
+
+// authConfidentialClient authenticates the calling client and requires it to be
+// CONFIDENTIAL (holds a verified secret). Introspection and revocation are
+// privileged token-management operations; a public client may not call them.
+// Constant-time secret compare; a nil app or empty stored secret fails closed.
+func authConfidentialClient(ctx context.Context, db orm.DB, c *zip.Ctx) (name string, ok bool) {
+	clientID, clientSecret := clientAuth(c)
+	if clientID == "" {
+		return "", false
+	}
+	app, err := store.GetApplicationByClientId(ctx, db, clientID)
+	if err != nil || app == nil || app.ClientSecret == "" {
+		return "", false
+	}
+	if subtle.ConstantTimeCompare([]byte(clientSecret), []byte(app.ClientSecret)) != 1 {
+		return "", false
+	}
+	return app.Name, true
+}
+
+// introspectHandler implements RFC 7662. Active iff the grant row still exists
+// (revocation-aware, the same liveness check userinfo makes) AND the JWT verifies
+// under the trusted keys. The response carries the standard introspection claims;
+// an inactive/absent/unauthenticated-target token returns only `{active:false}`.
+func introspectHandler(db orm.DB) zip.Handler {
+	return func(c *zip.Ctx) error {
+		setTokenCacheHeaders(c)
+		ctx := c.Context()
+		if _, ok := authConfidentialClient(ctx, db, c); !ok {
+			return tokenErrorClient(c, "client authentication failed")
+		}
+
+		tokenStr := param(c, "token")
+		if tokenStr == "" {
+			return c.JSON(200, inactiveToken())
+		}
+		h := hashToken(tokenStr)
+		// Liveness: the grant row must still exist (a revoked/rotated token has none).
+		row, _ := store.GetTokenByAccessTokenHash(ctx, db, h)
+		if row == nil {
+			row, _ = store.GetTokenByRefreshHash(ctx, db, h)
+		}
+		if row == nil {
+			return c.JSON(200, inactiveToken())
+		}
+		claims, err := verifyToken(ctx, db, tokenStr)
+		if err != nil {
+			return c.JSON(200, inactiveToken())
+		}
+
+		resp := map[string]any{
+			"active":     true,
+			"token_type": "Bearer",
+			"scope":      claims.Scope,
+			"client_id":  claims.Azp,
+			"sub":        claims.Subject,
+			"iss":        claims.Issuer,
+			"owner":      claims.Owner,
+		}
+		if claims.Organization != "" {
+			resp["organization"] = claims.Organization
+		}
+		if claims.Email != "" {
+			resp["username"] = claims.Email
+		}
+		if len(claims.Audience) > 0 {
+			resp["aud"] = claims.Audience
+		}
+		if claims.ExpiresAt != nil {
+			resp["exp"] = claims.ExpiresAt.Unix()
+		}
+		if claims.IssuedAt != nil {
+			resp["iat"] = claims.IssuedAt.Unix()
+		}
+		if claims.NotBefore != nil {
+			resp["nbf"] = claims.NotBefore.Unix()
+		}
+		if claims.ID != "" {
+			resp["jti"] = claims.ID
+		}
+		return c.JSON(200, resp)
+	}
+}
+
+// revokeHandler implements RFC 7009. A confidential client revokes a token that
+// was issued to IT (§2.1) — an access token deletes that grant row; a refresh
+// token revokes the whole rotation family so no further access tokens can be
+// minted and every sibling dies. A token belonging to another client, or an
+// unknown token, is a silent 200 (no revocation, no oracle — §2.2).
+func revokeHandler(db orm.DB) zip.Handler {
+	return func(c *zip.Ctx) error {
+		setTokenCacheHeaders(c)
+		ctx := c.Context()
+		clientName, ok := authConfidentialClient(ctx, db, c)
+		if !ok {
+			return tokenErrorClient(c, "client authentication failed")
+		}
+
+		tokenStr := param(c, "token")
+		if tokenStr == "" {
+			return revoked(c)
+		}
+		h := hashToken(tokenStr)
+
+		if row, _ := store.GetTokenByAccessTokenHash(ctx, db, h); row != nil {
+			if row.Application == clientName {
+				_ = store.DeleteToken(ctx, db, row)
+			}
+			return revoked(c)
+		}
+		if row, _ := store.GetTokenByRefreshHash(ctx, db, h); row != nil {
+			if row.Application == clientName {
+				family, _ := store.ListTokensByRefreshFamily(ctx, db, row.RefreshFamily)
+				for _, t := range family {
+					_ = store.DeleteToken(ctx, db, t)
+				}
+			}
+			return revoked(c)
+		}
+		return revoked(c)
+	}
+}
+
+// inactiveToken is the RFC 7662 response for a token that is not active.
+func inactiveToken() map[string]any { return map[string]any{"active": false} }
+
+// revoked is the RFC 7009 §2.2 success response: HTTP 200, empty body.
+func revoked(c *zip.Ctx) error { return c.Status(200).JSON(200, struct{}{}) }

internal/oidc/introspect_revoke_test.go

@@ -0,0 +1,139 @@
+// Copyright 2026 Hanzo AI, Inc. All rights reserved.
+
+package oidc
+
+import (
+	"encoding/base64"
+	"net/http"
+	"net/url"
+	"testing"
+
+	"github.com/zap-proto/zip"
+)
+
+// RFC 7662 introspection + RFC 7009 revocation, end to end: mint a real token via
+// the password grant, introspect it (active + claims), revoke it, and confirm it
+// then reads inactive AND its bearer no longer resolves at userinfo.
+
+// postForm posts a form to path as the confidential client (client_secret_basic).
+func postForm(t *testing.T, app *zip.App, path, clientID, secret string, form url.Values) (*http.Response, map[string]any) {
+	t.Helper()
+	req := formReq("POST", path, form)
+	if clientID != "" {
+		req.Header.Set("Authorization", "Basic "+base64.StdEncoding.EncodeToString([]byte(clientID+":"+secret)))
+	}
+	resp, body := do(t, app, req)
+	return resp, decode(t, body)
+}
+
+// mintPasswordToken issues an access+refresh token for the seeded user.
+func mintPasswordToken(t *testing.T, app *zip.App) (access, refresh string) {
+	t.Helper()
+	_, tok := postToken(t, app, url.Values{
+		"grant_type":    {"password"},
+		"client_id":     {"hanzo-console"},
+		"client_secret": {"top-secret"},
+		"username":      {"alice@hanzo.ai"},
+		"password":      {"correct horse"},
+		"scope":         {"openid profile email offline_access"},
+	})
+	access, _ = tok["access_token"].(string)
+	refresh, _ = tok["refresh_token"].(string)
+	if access == "" {
+		t.Fatalf("no access_token minted; body=%v", tok)
+	}
+	return access, refresh
+}
+
+func TestIntrospect_activeToken_returnsClaims(t *testing.T) {
+	app, db := newServer(t)
+	_ = db
+	seedApp(t, db, appOpts{clientID: "hanzo-console", secret: "top-secret"})
+	seedUser(t, db, "alice", "alice@hanzo.ai", "correct horse")
+	access, _ := mintPasswordToken(t, app)
+
+	_, ir := postForm(t, app, PathIntrospect, "hanzo-console", "top-secret", url.Values{"token": {access}})
+	if ir["active"] != true {
+		t.Fatalf("active = %v, want true; body=%v", ir["active"], ir)
+	}
+	if ir["sub"] != "hanzo/alice" {
+		t.Errorf("sub = %v, want hanzo/alice", ir["sub"])
+	}
+	if ir["owner"] != "hanzo" {
+		t.Errorf("owner = %v, want hanzo", ir["owner"])
+	}
+	if ir["token_type"] != "Bearer" {
+		t.Errorf("token_type = %v, want Bearer", ir["token_type"])
+	}
+}
+
+func TestIntrospect_requiresConfidentialClientAuth(t *testing.T) {
+	app, db := newServer(t)
+	seedApp(t, db, appOpts{clientID: "hanzo-console", secret: "top-secret"})
+	seedUser(t, db, "alice", "alice@hanzo.ai", "correct horse")
+	access, _ := mintPasswordToken(t, app)
+
+	// No client auth → 401 (introspection is privileged).
+	resp, _ := postForm(t, app, PathIntrospect, "", "", url.Values{"token": {access}})
+	if resp.StatusCode != 401 {
+		t.Fatalf("unauthenticated introspect status = %d, want 401", resp.StatusCode)
+	}
+	// Wrong secret → 401.
+	resp2, _ := postForm(t, app, PathIntrospect, "hanzo-console", "WRONG", url.Values{"token": {access}})
+	if resp2.StatusCode != 401 {
+		t.Fatalf("bad-secret introspect status = %d, want 401", resp2.StatusCode)
+	}
+}
+
+func TestIntrospect_garbageToken_inactive(t *testing.T) {
+	app, db := newServer(t)
+	seedApp(t, db, appOpts{clientID: "hanzo-console", secret: "top-secret"})
+
+	_, ir := postForm(t, app, PathIntrospect, "hanzo-console", "top-secret", url.Values{"token": {"not-a-real-token"}})
+	if ir["active"] != false {
+		t.Fatalf("garbage token active = %v, want false", ir["active"])
+	}
+}
+
+func TestRevoke_accessToken_thenInactive(t *testing.T) {
+	app, db := newServer(t)
+	seedApp(t, db, appOpts{clientID: "hanzo-console", secret: "top-secret"})
+	seedUser(t, db, "alice", "alice@hanzo.ai", "correct horse")
+	access, _ := mintPasswordToken(t, app)
+
+	// Active before revoke.
+	_, before := postForm(t, app, PathIntrospect, "hanzo-console", "top-secret", url.Values{"token": {access}})
+	if before["active"] != true {
+		t.Fatalf("token not active before revoke; body=%v", before)
+	}
+
+	// Revoke → 200.
+	resp, _ := postForm(t, app, PathRevoke, "hanzo-console", "top-secret", url.Values{"token": {access}})
+	if resp.StatusCode != 200 {
+		t.Fatalf("revoke status = %d, want 200", resp.StatusCode)
+	}
+
+	// Inactive after revoke — introspection reflects the deleted grant row.
+	_, after := postForm(t, app, PathIntrospect, "hanzo-console", "top-secret", url.Values{"token": {access}})
+	if after["active"] != false {
+		t.Fatalf("token still active after revoke; body=%v", after)
+	}
+
+	// And the bearer no longer resolves at userinfo (revocation is real).
+	req := formReqNoBody("GET", PathUserInfo)
+	req.Header.Set("Authorization", "Bearer "+access)
+	if resp, _ := do(t, app, req); resp.StatusCode == 200 {
+		t.Fatalf("userinfo still 200 for a revoked bearer")
+	}
+}
+
+func TestRevoke_unknownToken_is200_noOracle(t *testing.T) {
+	app, db := newServer(t)
+	seedApp(t, db, appOpts{clientID: "hanzo-console", secret: "top-secret"})
+
+	// RFC 7009 §2.2: an unknown token is a silent 200, not an error.
+	resp, _ := postForm(t, app, PathRevoke, "hanzo-console", "top-secret", url.Values{"token": {"unknown"}})
+	if resp.StatusCode != 200 {
+		t.Fatalf("unknown-token revoke status = %d, want 200", resp.StatusCode)
+	}
+}

internal/oidc/issuetoken.go

@@ -0,0 +1,328 @@
+// Copyright 2026 Hanzo AI, Inc. All rights reserved.
+
+package oidc
+
+import (
+	"context"
+	"crypto/subtle"
+	"os"
+	"strings"
+	"time"
+
+	"github.com/hanzoai/orm"
+	"github.com/zap-proto/zip"
+
+	"github.com/hanzoai/iam/internal/httpx"
+	"github.com/hanzoai/iam/internal/schema"
+	"github.com/hanzoai/iam/internal/store"
+)
+
+// The confidential-client on-behalf-of primitives. A trusted, allow-listed backend
+// (the console BFF as `hanzo-console`) authenticates as the confidential CLIENT —
+// not an end-user bearer — and acts on a `?id=<owner>/<name>` target user: mint a
+// short-lived user-bound access token (`issue-user-token`), or (re)generate/revoke
+// the user's durable `hk-` Cloud API key.
+//
+// `issue-user-token` is the CANONICAL FORWARD path's transitional twin: the RFC
+// 8693 Token Exchange grant on /oauth/token is the standard (HIP-0111), and this
+// verb is the COMPAT SHIM the console still calls (identity.ts `issueUserToken` →
+// `adminBearer` backs EVERY /v1/* BFF proxy call). It mints over the exact same
+// authorizeMinter allow-list + reserved-org gate + SignUserToken as token exchange
+// — same authority, same audit — so the console works unchanged during the cutover,
+// then migrates to grant_type=token-exchange and this shim is retired. API keys are
+// a PRODUCT credential (no IETF standard), a first-party primitive.
+//
+// They are NOT Bearer-gated (they live in the PUBLIC group, before the Guard); each
+// does its own tighter authentication through the ONE authorizeMinter seam.
+const (
+	PathIssueUserToken = "/v1/iam/issue-user-token"
+	PathMintUserKeys   = "/v1/iam/mint-user-keys"
+	PathRevokeUserKeys = "/v1/iam/revoke-user-keys"
+)
+
+// routeIssueToken registers the confidential-client primitives on the PUBLIC group
+// r. POST-only: they mint/rotate a credential — never over a cacheable GET (a
+// client_secret in a query string would reach logs/proxies).
+func routeIssueToken(r zip.Router, db orm.DB) {
+	r.Post(PathIssueUserToken, issueUserTokenHandler(db))
+	r.Post(PathMintUserKeys, mintUserKeysHandler(db))
+	r.Post(PathRevokeUserKeys, revokeUserKeysHandler(db))
+}
+
+// issueUserTokenHandler mints an access token for the `?id=<owner>/<name>` target
+// user (optional `?aud=` resource, RFC 8707), issued by the authenticated +
+// allow-listed confidential client. The token's subject + owner are the TARGET
+// USER's, so a resource server scopes on the validated owner claim to the user's
+// tenant — indistinguishable from a token the user obtained directly. Response is
+// the camelCase `{accessToken, expiresIn}` body identity.ts consumes. Equivalent to
+// the RFC 8693 token-exchange grant, minus the subject_token proof (the console has
+// the user's id, not a token) — the reason this compat shim exists.
+func issueUserTokenHandler(db orm.DB) zip.Handler {
+	return func(c *zip.Ctx) error {
+		ctx := c.Context()
+		now := nowFunc()
+
+		clientApp, status, msg := authorizeMinter(ctx, db, c)
+		if status != 0 {
+			return mintErr(c, status, msg)
+		}
+		user, status, msg := mintTarget(ctx, db, c, clientApp)
+		if status != 0 {
+			return mintErr(c, status, msg)
+		}
+
+		aud := strings.TrimSpace(c.Query("aud"))
+		if aud == "" {
+			aud = defaultUserAudience(ctx, db, user, clientApp)
+		}
+		signer, err := signerFor(ctx, db, clientApp, tokenIssuer(c))
+		if err != nil {
+			return mintErr(c, 500, "server_error")
+		}
+		ttl := appTTL(clientApp)
+		subject := user.Owner + "/" + user.Name
+		display := user.DisplayName
+		if display == "" {
+			display = user.Name
+		}
+		access, err := signer.SignUserToken(subject, user.Owner, aud, clientApp.ClientId, user.Email, display, "", ttl, now)
+		if err != nil {
+			return mintErr(c, 500, "server_error")
+		}
+
+		row := &schema.Token{
+			Owner:           user.Owner,
+			Application:     clientApp.Name,
+			Organization:    user.Owner,
+			User:            subject,
+			TokenType:       "Bearer",
+			ExpiresIn:       int(ttl.Seconds()),
+			AccessTokenHash: hashToken(access),
+		}
+		row.Name = "iut-" + hashToken(access)[:32]
+		if err := store.PersistToken(ctx, db, row); err != nil {
+			return mintErr(c, 500, "server_error")
+		}
+		auditMint(ctx, db, c, "issue-user-token", clientApp.ClientId, subject)
+		return httpx.Ok(c, map[string]any{
+			"accessToken": access,
+			"expiresIn":   int(ttl.Seconds()),
+		})
+	}
+}
+
+// mintUserKeysHandler (re)generates the target user's durable `hk-` Cloud API key
+// (schema.User.AccessKey) and returns it once, over the shared authorizeMinter +
+// mintTarget seam.
+func mintUserKeysHandler(db orm.DB) zip.Handler {
+	return func(c *zip.Ctx) error {
+		ctx := c.Context()
+		clientApp, status, msg := authorizeMinter(ctx, db, c)
+		if status != 0 {
+			return mintErr(c, status, msg)
+		}
+		user, status, msg := mintTarget(ctx, db, c, clientApp)
+		if status != 0 {
+			return mintErr(c, status, msg)
+		}
+		key, err := newAccessKey()
+		if err != nil {
+			return mintErr(c, 500, "server_error")
+		}
+		user.AccessKey = key
+		user.UpdatedTime = nowFunc().UTC().Format(time.RFC3339)
+		if err := saveUser(ctx, db, user); err != nil {
+			return mintErr(c, 500, "server_error")
+		}
+		auditMint(ctx, db, c, "mint-user-keys", clientApp.ClientId, user.Owner+"/"+user.Name)
+		return httpx.Ok(c, map[string]any{"accessKey": key})
+	}
+}
+
+// revokeUserKeysHandler clears the target user's `hk-` key (immediate revoke).
+func revokeUserKeysHandler(db orm.DB) zip.Handler {
+	return func(c *zip.Ctx) error {
+		ctx := c.Context()
+		clientApp, status, msg := authorizeMinter(ctx, db, c)
+		if status != 0 {
+			return mintErr(c, status, msg)
+		}
+		user, status, msg := mintTarget(ctx, db, c, clientApp)
+		if status != 0 {
+			return mintErr(c, status, msg)
+		}
+		user.AccessKey = ""
+		user.AccessSecret = ""
+		user.AccessSecretHash = ""
+		user.UpdatedTime = nowFunc().UTC().Format(time.RFC3339)
+		if err := saveUser(ctx, db, user); err != nil {
+			return mintErr(c, 500, "server_error")
+		}
+		auditMint(ctx, db, c, "revoke-user-keys", clientApp.ClientId, user.Owner+"/"+user.Name)
+		return httpx.Ok(c, map[string]any{"affected": true})
+	}
+}
+
+// authorizeMinter is the ONE authentication seam for the confidential-client
+// primitives: it authenticates the client (client_secret_basic or _post,
+// constant-time) and enforces the mint allow-list. status==0 means authorized and
+// returns the client app; otherwise (status, msg) is the response to render. It
+// never reveals WHICH check failed beyond auth-vs-permission (401 vs 403).
+func authorizeMinter(ctx context.Context, db orm.DB, c *zip.Ctx) (*schema.Application, int, string) {
+	clientID, clientSecret := clientAuth(c)
+	if clientID == "" {
+		return nil, 401, "client authentication required"
+	}
+	app, err := store.GetApplicationByClientId(ctx, db, clientID)
+	if err != nil {
+		return nil, 500, "server_error"
+	}
+	if app == nil || app.ClientSecret == "" ||
+		subtle.ConstantTimeCompare([]byte(clientSecret), []byte(app.ClientSecret)) != 1 {
+		return nil, 401, "client authentication failed"
+	}
+	// The capability gate: only an ALLOW-LISTED app may act on a user's behalf.
+	// Fail closed — an unset allow-list permits NOTHING (these hand out / rotate a
+	// user's credential; a missing config must never mean "anyone"). Matched by the
+	// globally-unique clientId only (see mintAllowed).
+	if !mintAllowed(clientID) {
+		return nil, 403, "client is not on the user-key mint allow-list"
+	}
+	return app, 0, ""
+}
+
+// mintTarget resolves and validates the `?id=<owner>/<name>` target user for the
+// authenticated clientApp. A missing id or absent user is a v1 business error
+// (200 + status:error); a revoked (forbidden/deleted) user is a 403 — no
+// credential is ever minted for it. A RESERVED-org (admin/built-in) target — a
+// cross-tenant / SuperAdmin identity — additionally requires the separate
+// admin-mint capability, so even a valid general minter cannot reach an admin-org
+// user unless explicitly granted (defense-in-depth behind the mint allow-list).
+func mintTarget(ctx context.Context, db orm.DB, c *zip.Ctx, clientApp *schema.Application) (*schema.User, int, string) {
+	owner, name := splitSub(c.Query("id"))
+	if owner == "" || name == "" {
+		return nil, 200, "id (owner/name) is required"
+	}
+	if store.IsSigningCertOwner(owner) && !adminMintAllowed(clientApp.ClientId) {
+		return nil, 403, "client is not permitted to act for a reserved-org user"
+	}
+	user, err := store.GetUserByName(ctx, db, owner, name)
+	if err != nil {
+		return nil, 500, "server_error"
+	}
+	if user == nil {
+		return nil, 200, "the user does not exist"
+	}
+	if user.IsForbidden || user.IsDeleted {
+		return nil, 403, "the user is forbidden"
+	}
+	return user, 0, ""
+}
+
+// auditMint best-effort records a confidential-primitive event — the
+// accountability trail for WHO (minter clientId) issued/rotated a credential for
+// WHOM (target subject). Emitted only on success. A failed audit write never
+// fails the operation (the credential was already issued); it is a record, not a
+// gate.
+func auditMint(ctx context.Context, db orm.DB, c *zip.Ctx, action, minterClientID, targetSub string) {
+	name, err := newOpaqueToken()
+	if err != nil {
+		return
+	}
+	owner, _ := splitSub(targetSub)
+	log := orm.New[schema.AuditLog](db)
+	log.Owner = owner
+	log.Name = name
+	log.CreatedTime = nowFunc().UTC().Format(time.RFC3339)
+	log.Organization = owner
+	log.User = targetSub
+	log.Action = action
+	log.Object = minterClientID
+	log.Method = "POST"
+	log.RequestUri = c.Path()
+	log.StatusCode = 200
+	log.IsTriggered = true
+	log.SetId(owner + "/" + name)
+	_ = log.CreateCtx(ctx)
+}
+
+// mintErr renders the v1 error envelope with a correct HTTP status (the SDK
+// branches on status; a business error rides a 200, an auth/permission failure
+// its real 401/403).
+func mintErr(c *zip.Ctx, status int, msg string) error {
+	return c.JSON(status, httpx.Response{Status: "error", Msg: msg})
+}
+
+// mintAllowed reports whether a client is on the IAM_KEY_MINT_ALLOWED_APPS
+// allow-list. It matches the client's GLOBALLY-unique clientId ONLY — never the
+// per-owner-unique app Name: a Name match let a tenant org-admin register an app
+// named like the console in their OWN org and pass the gate, minting an admin-org
+// (SuperAdmin) token (red-team finding, closed here). An empty/unset list allows
+// nothing — fail closed.
+func mintAllowed(clientID string) bool {
+	return appInList("IAM_KEY_MINT_ALLOWED_APPS", clientID)
+}
+
+// adminMintAllowed reports whether a client may act on behalf of a RESERVED-org
+// (admin/built-in) user — a strictly narrower, separately-granted capability than
+// the general mint list, so a leaked general-minter secret can never reach a
+// SuperAdmin identity. The console, which legitimately drives admin.hanzo.ai, is
+// on both lists. Fail closed.
+func adminMintAllowed(clientID string) bool {
+	return appInList("IAM_ADMIN_MINT_ALLOWED_APPS", clientID)
+}
+
+// appInList matches clientID against a comma/space-separated env allow-list, by
+// exact clientId. Empty/unset → false (fail closed).
+func appInList(env, clientID string) bool {
+	if clientID == "" {
+		return false
+	}
+	raw := os.Getenv(env)
+	if strings.TrimSpace(raw) == "" {
+		return false
+	}
+	for _, item := range strings.FieldsFunc(raw, func(r rune) bool { return r == ',' || r == ' ' }) {
+		if item == clientID {
+			return true
+		}
+	}
+	return false
+}
+
+// defaultUserAudience is the audience a user token carries when the caller names
+// no explicit resource: the target user's own application's clientId (a same-app
+// consumer accepts it), falling back to the minting client when the user's app
+// can't be resolved — the caller then pins `?aud=` for a cross-app resource.
+func defaultUserAudience(ctx context.Context, db orm.DB, user *schema.User, clientApp *schema.Application) string {
+	if user.SignupApplication != "" {
+		// Applications are platform-owned (owner "admin").
+		if ua, err := store.GetApplicationByName(ctx, db, "admin", user.SignupApplication); err == nil && ua != nil {
+			return ua.ClientId
+		}
+	}
+	return clientApp.ClientId
+}
+
+// newAccessKey mints an `hk-`-prefixed Cloud API key (the durable credential the
+// gateway recognizes), a cryptographically-random opaque token behind the prefix.
+func newAccessKey() (string, error) {
+	tok, err := newOpaqueToken()
+	if err != nil {
+		return "", err
+	}
+	return "hk-" + tok, nil
+}
+
+// saveUser read-modify-writes the mutated user row by its (owner, name) key,
+// preserving every other field (orm persists the whole record).
+func saveUser(ctx context.Context, db orm.DB, user *schema.User) error {
+	existing, err := orm.Get[schema.User](db, user.Owner+"/"+user.Name)
+	if err != nil {
+		return err
+	}
+	model := existing.Model
+	*existing = *user
+	existing.Model = model
+	return existing.UpdateCtx(ctx)
+}

internal/oidc/issuetoken_redteam_test.go

@@ -0,0 +1,81 @@
+// Copyright 2026 Hanzo AI, Inc. All rights reserved.
+
+package oidc
+
+import (
+	"context"
+	"testing"
+
+	"github.com/hanzoai/orm"
+
+	"github.com/hanzoai/iam/internal/schema"
+)
+
+// Red-team helpers + the field-preservation guard for the on-behalf-of primitives.
+// The name-collision priv-esc PoC that motivated the clientId-only allow-list is
+// now the regression guard TestTokenExchange_nameCollisionAttacker_403 (the
+// issue-user-token verb it originally attacked is retired in favor of RFC 8693
+// Token Exchange). seedAttackerApp stays here — it models exactly what a tenant
+// org-admin can create through POST /v1/iam/application (every field bound from
+// the body), the precondition that test relies on.
+
+// seedAttackerApp creates a tenant-owned application the attacker fully controls
+// (owner=evil, chosen name/clientId/secret) whose Cert points at an EXISTING
+// trusted platform cert by name — exactly what internal/applications.create binds
+// from the request body (Owner/Name/ClientId/ClientSecret/Cert all verbatim).
+func seedAttackerApp(t *testing.T, db orm.DB, owner, name, clientID, secret, platformCert string) {
+	t.Helper()
+	a := orm.New[schema.Application](db)
+	a.Owner = owner // a NON-reserved tenant org the attacker org-admins
+	a.Name = name
+	a.ClientId = clientID
+	a.ClientSecret = secret
+	a.Organization = owner
+	a.Cert = platformCert // resolved among admin/built-in by GetSigningCert
+	a.ExpireInHours = 1
+	a.SetId(owner + "/" + name)
+	if err := a.CreateCtx(context.Background()); err != nil {
+		t.Fatalf("seed attacker app: %v", err)
+	}
+}
+
+// TestRedTeam_mintKeys_preservesPasswordHashAndIsAdmin proves the mint/revoke
+// read-modify-write (saveUser) does not blank PasswordHash nor flip privilege
+// bits. GetUserByName returns the FULL row (no mask), so *existing = *user
+// preserves every field the handler didn't touch.
+func TestRedTeam_mintKeys_preservesPasswordHashAndIsAdmin(t *testing.T) {
+	t.Setenv("IAM_KEY_MINT_ALLOWED_APPS", "hanzo-console")
+	app, db := newServer(t)
+	seedApp(t, db, appOpts{clientID: "hanzo-console", secret: "top-secret"})
+
+	u := orm.New[schema.User](db)
+	u.Owner, u.Name, u.Email = "hanzo", "carol", "carol@hanzo.ai"
+	u.PasswordHash = "$argon2id$v=19$m=65536,t=3,p=4$SALTSALT$HASHHASHHASH"
+	u.PasswordType = "argon2id"
+	u.IsAdmin = true
+	u.SetId("hanzo/carol")
+	if err := u.CreateCtx(context.Background()); err != nil {
+		t.Fatalf("seed: %v", err)
+	}
+
+	if resp, body := do(t, app, keyReq(PathMintUserKeys, "hanzo-console", "top-secret", "?id=hanzo/carol")); resp.StatusCode != 200 {
+		t.Fatalf("mint status=%d body=%s", resp.StatusCode, body)
+	}
+
+	got, err := orm.Get[schema.User](db, "hanzo/carol")
+	if err != nil {
+		t.Fatalf("reload: %v", err)
+	}
+	if got.PasswordHash != u.PasswordHash {
+		t.Errorf("PasswordHash mutated by mint: %q", got.PasswordHash)
+	}
+	if got.PasswordType != "argon2id" {
+		t.Errorf("PasswordType mutated by mint: %q", got.PasswordType)
+	}
+	if !got.IsAdmin {
+		t.Errorf("IsAdmin flipped false by mint")
+	}
+	if got.AccessKey == "" {
+		t.Errorf("mint did not set AccessKey")
+	}
+}

internal/oidc/issuetoken_test.go

@@ -0,0 +1,160 @@
+// Copyright 2026 Hanzo AI, Inc. All rights reserved.
+
+package oidc
+
+import (
+	"context"
+	"encoding/base64"
+	"net/http"
+	"net/http/httptest"
+	"strings"
+	"testing"
+
+	"github.com/hanzoai/orm"
+
+	"github.com/hanzoai/iam/internal/schema"
+	"github.com/hanzoai/iam/internal/store"
+)
+
+// The `hk-` Cloud API-key primitives (mint/revoke). A confidential, allow-listed
+// client (client_secret_basic) acts on a ?id=<owner>/<name> target user. These are
+// a product credential, not an RFC token flow — the on-behalf-of TOKEN minting is
+// RFC 8693 Token Exchange (token_exchange_test.go).
+
+// seedForbiddenUser seeds a revoked (forbidden) user — no credential may be minted
+// or rotated for it.
+func seedForbiddenUser(t *testing.T, db orm.DB, owner, name string) {
+	t.Helper()
+	u := orm.New[schema.User](db)
+	u.Owner, u.Name = owner, name
+	u.IsForbidden = true
+	u.SetId(owner + "/" + name)
+	if err := u.CreateCtx(context.Background()); err != nil {
+		t.Fatalf("seed forbidden user %s/%s: %v", owner, name, err)
+	}
+}
+
+// keyReq builds a POST to a key primitive authenticating clientID/secret via Basic.
+func keyReq(path, clientID, secret, query string) *http.Request {
+	req := httptest.NewRequest("POST", path+query, nil)
+	req.Host = "hanzo.id"
+	if clientID != "" {
+		req.Header.Set("Authorization", "Basic "+
+			base64.StdEncoding.EncodeToString([]byte(clientID+":"+secret)))
+	}
+	return req
+}
+
+// dataMap pulls the `data` object out of the v1 envelope.
+func dataMap(t *testing.T, body []byte) map[string]any {
+	t.Helper()
+	m := decode(t, body)
+	d, _ := m["data"].(map[string]any)
+	return d
+}
+
+// issue-user-token is the compat shim the console's adminBearer depends on: an
+// allow-listed confidential client mints a token bound to the ?id= target user.
+func TestIssueUserToken_mintsTargetUserToken(t *testing.T) {
+	t.Setenv("IAM_KEY_MINT_ALLOWED_APPS", "hanzo-console")
+	app, db := newServer(t)
+	seedApp(t, db, appOpts{clientID: "hanzo-console", secret: "top-secret"})
+	seedUser(t, db, "alice", "alice@hanzo.ai", "pw")
+
+	resp, body := do(t, app, keyReq(PathIssueUserToken, "hanzo-console", "top-secret", "?id=hanzo/alice&aud=hanzo-cloud"))
+	if resp.StatusCode != 200 {
+		t.Fatalf("status = %d; body=%s", resp.StatusCode, body)
+	}
+	access, _ := dataMap(t, body)["accessToken"].(string)
+	if access == "" {
+		t.Fatalf("no accessToken; body=%s", body)
+	}
+	// The minted token verifies under the JWKS and carries the TARGET user's identity.
+	claims, err := verifyToken(context.Background(), db, access)
+	if err != nil {
+		t.Fatalf("minted token does not verify: %v", err)
+	}
+	if claims.Subject != "hanzo/alice" || claims.Owner != "hanzo" {
+		t.Fatalf("subject/owner = %q/%q, want hanzo/alice / hanzo", claims.Subject, claims.Owner)
+	}
+	if exp, _ := dataMap(t, body)["expiresIn"].(float64); exp <= 0 {
+		t.Fatalf("expiresIn = %v, want > 0", dataMap(t, body)["expiresIn"])
+	}
+}
+
+func TestIssueUserToken_notAllowlisted_403(t *testing.T) {
+	t.Setenv("IAM_KEY_MINT_ALLOWED_APPS", "other-app")
+	app, db := newServer(t)
+	seedApp(t, db, appOpts{clientID: "hanzo-console", secret: "top-secret"})
+	seedUser(t, db, "alice", "alice@hanzo.ai", "pw")
+	resp, _ := do(t, app, keyReq(PathIssueUserToken, "hanzo-console", "top-secret", "?id=hanzo/alice"))
+	if resp.StatusCode != 403 {
+		t.Fatalf("off-allow-list issue-user-token = %d, want 403", resp.StatusCode)
+	}
+}
+
+func TestMintUserKeys_generatesReadableHkKey(t *testing.T) {
+	t.Setenv("IAM_KEY_MINT_ALLOWED_APPS", "hanzo-console")
+	app, db := newServer(t)
+	seedApp(t, db, appOpts{clientID: "hanzo-console", secret: "top-secret"})
+	seedUser(t, db, "alice", "alice@hanzo.ai", "pw")
+
+	resp, body := do(t, app, keyReq(PathMintUserKeys, "hanzo-console", "top-secret", "?id=hanzo/alice"))
+	if resp.StatusCode != 200 {
+		t.Fatalf("status = %d; body=%s", resp.StatusCode, body)
+	}
+	key, _ := dataMap(t, body)["accessKey"].(string)
+	if !strings.HasPrefix(key, "hk-") || len(key) < 8 {
+		t.Fatalf("accessKey = %q, want an hk- key", key)
+	}
+	// The minted key is persisted on the user row (get-user / getUserKey read it).
+	u, err := store.GetUserByName(context.Background(), db, "hanzo", "alice")
+	if err != nil || u == nil {
+		t.Fatalf("reload user: %v", err)
+	}
+	if u.AccessKey != key {
+		t.Fatalf("persisted AccessKey = %q, want the minted %q", u.AccessKey, key)
+	}
+}
+
+func TestRevokeUserKeys_clearsTheKey(t *testing.T) {
+	t.Setenv("IAM_KEY_MINT_ALLOWED_APPS", "hanzo-console")
+	app, db := newServer(t)
+	seedApp(t, db, appOpts{clientID: "hanzo-console", secret: "top-secret"})
+	seedUser(t, db, "alice", "alice@hanzo.ai", "pw")
+
+	do(t, app, keyReq(PathMintUserKeys, "hanzo-console", "top-secret", "?id=hanzo/alice"))
+
+	resp, body := do(t, app, keyReq(PathRevokeUserKeys, "hanzo-console", "top-secret", "?id=hanzo/alice"))
+	if resp.StatusCode != 200 || decode(t, body)["status"] != "ok" {
+		t.Fatalf("revoke status = %d; body=%s", resp.StatusCode, body)
+	}
+	u, _ := store.GetUserByName(context.Background(), db, "hanzo", "alice")
+	if u.AccessKey != "" {
+		t.Fatalf("AccessKey after revoke = %q, want empty", u.AccessKey)
+	}
+}
+
+func TestMintUserKeys_notAllowlisted_403(t *testing.T) {
+	t.Setenv("IAM_KEY_MINT_ALLOWED_APPS", "other")
+	app, db := newServer(t)
+	seedApp(t, db, appOpts{clientID: "hanzo-console", secret: "top-secret"})
+	seedUser(t, db, "alice", "alice@hanzo.ai", "pw")
+
+	resp, _ := do(t, app, keyReq(PathMintUserKeys, "hanzo-console", "top-secret", "?id=hanzo/alice"))
+	if resp.StatusCode != 403 {
+		t.Fatalf("off-allow-list mint status = %d, want 403", resp.StatusCode)
+	}
+}
+
+func TestMintUserKeys_forbiddenUser_403(t *testing.T) {
+	t.Setenv("IAM_KEY_MINT_ALLOWED_APPS", "hanzo-console")
+	app, db := newServer(t)
+	seedApp(t, db, appOpts{clientID: "hanzo-console", secret: "top-secret"})
+	seedForbiddenUser(t, db, "hanzo", "banned")
+
+	resp, _ := do(t, app, keyReq(PathMintUserKeys, "hanzo-console", "top-secret", "?id=hanzo/banned"))
+	if resp.StatusCode != 403 {
+		t.Fatalf("forbidden-user mint status = %d, want 403", resp.StatusCode)
+	}
+}

internal/oidc/jwks.go

@@ -0,0 +1,89 @@
+// Copyright 2026 Hanzo AI, Inc. All rights reserved.
+
+package oidc
+
+import (
+	"crypto/sha256"
+	"encoding/hex"
+	"encoding/json"
+	"strings"
+
+	"github.com/hanzoai/orm"
+	"github.com/zap-proto/zip"
+
+	"github.com/hanzoai/iam/internal/schema"
+	"github.com/hanzoai/iam/internal/store"
+)
+
+// The JSON Web Key Set: the public half of every active signing Cert, so relying
+// parties verify the tokens iam2 issues. This is the load-bearing interop
+// surface — the live hanzo.id JWKS publishes one RSA (RS256) key per Cert, keyed
+// by `kid` = the Cert name, and every existing verifier reads it. Keys are
+// deduplicated by kid and ordered stably; the response carries a strong ETag and
+// a 60s cache, matching live.
+
+// signingAlgs is the set of JOSE algorithms iam2 publishes signing keys for.
+// A Cert whose CryptoAlgorithm is outside this set (e.g. an ACME/SSL TLS cert)
+// is not a token-signing key and is excluded from the JWKS.
+var signingAlgs = map[string]bool{
+	"RS256": true, "RS512": true,
+	"ES256": true, "ES384": true, "ES512": true,
+	"MLDSA65": true,
+}
+
+// jwksHandler serves GET /v1/iam/.well-known/jwks.
+func jwksHandler(db orm.DB) zip.Handler {
+	return func(c *zip.Ctx) error {
+		certs, err := store.ListCerts(c.Context(), db)
+		if err != nil {
+			return c.JSON(500, map[string]string{"error": "server_error"})
+		}
+		keys := make([]any, 0, len(certs))
+		seen := make(map[string]bool, len(certs))
+		for _, cert := range certs {
+			if !isSigningCert(cert) || seen[cert.Name] {
+				continue
+			}
+			jwk, err := certToJWK(cert)
+			if err != nil {
+				continue // a cert we cannot encode never fails the whole set
+			}
+			seen[cert.Name] = true
+			keys = append(keys, jwk)
+		}
+
+		body, err := json.Marshal(map[string]any{"keys": keys})
+		if err != nil {
+			return c.JSON(500, map[string]string{"error": "server_error"})
+		}
+		sum := sha256.Sum256(body)
+		etag := `"` + hex.EncodeToString(sum[:16]) + `"`
+		c.SetHeader("Cache-Control", "public, max-age=60")
+		c.SetHeader("ETag", etag)
+		if c.Header("If-None-Match") == etag {
+			return c.NoContent(304)
+		}
+		c.SetHeader("Content-Type", "application/json")
+		return c.Bytes(200, body)
+	}
+}
+
+// isSigningCert reports whether a Cert is a token-signing key that belongs in the
+// JWKS: it must be owned by a reserved platform org (so a tenant cannot publish a
+// key under a colliding kid), carry key material and a recognized signing
+// algorithm, and not be a TLS/SSL certificate.
+func isSigningCert(cert *schema.Cert) bool {
+	if cert == nil || cert.Name == "" {
+		return false
+	}
+	if !store.IsSigningCertOwner(cert.Owner) {
+		return false
+	}
+	if cert.PrivateKey == "" && cert.Certificate == "" {
+		return false
+	}
+	if strings.EqualFold(cert.Type, "SSL") {
+		return false
+	}
+	return signingAlgs[strings.ToUpper(strings.ReplaceAll(cert.CryptoAlgorithm, "-", ""))]
+}

internal/oidc/jwks_test.go

@@ -0,0 +1,222 @@
+// Copyright 2026 Hanzo AI, Inc. All rights reserved.
+
+package oidc
+
+import (
+	"crypto/rand"
+	"encoding/base64"
+	"math/big"
+	"testing"
+
+	"github.com/luxfi/crypto/pq/mldsa/mldsa65"
+
+	"github.com/hanzoai/orm"
+
+	"github.com/hanzoai/iam/internal/schema"
+)
+
+// seedMLDSACert creates an ML-DSA-65 signing cert (raw base64 private key).
+func seedMLDSACert(t *testing.T, db orm.DB, name string) {
+	t.Helper()
+	_, sk, err := mldsa65.GenerateKey(rand.Reader)
+	if err != nil {
+		t.Fatalf("mldsa keygen: %v", err)
+	}
+	c := orm.New[schema.Cert](db)
+	c.Owner = "admin"
+	c.Name = name
+	c.CryptoAlgorithm = "MLDSA65"
+	c.PrivateKey = base64.StdEncoding.EncodeToString(sk.Bytes())
+	c.SetId("admin/" + name)
+	if err := c.CreateCtx(tctx()); err != nil {
+		t.Fatalf("seed mldsa cert: %v", err)
+	}
+}
+
+// A fresh server with no signing certs still serves a well-formed, empty key set
+// — the guard against the earlier bug where JWKS was empty yet discovery
+// advertised signing algorithms, so verifiers could never resolve a key.
+func TestJWKS_EmptyButWellFormed(t *testing.T) {
+	app, _ := newServer(t)
+	resp, body := do(t, app, formReqNoBody("GET", PathJWKS))
+	if resp.StatusCode != 200 {
+		t.Fatalf("status %d", resp.StatusCode)
+	}
+	set := decode(t, body)
+	if keys, ok := set["keys"].([]any); !ok || len(keys) != 0 {
+		t.Fatalf("empty JWKS = %v, want an empty keys array", set["keys"])
+	}
+}
+
+// The RSA signing key is published with the exact shape RS256 verifiers read —
+// kty/alg/use/kid/n/e — and never any private material.
+func TestJWKS_PublishesRSAPublicKey(t *testing.T) {
+	app, db := newServer(t)
+	seedRSACert(t, db, "cert-hanzo")
+
+	resp, body := do(t, app, formReqNoBody("GET", PathJWKS))
+	if resp.StatusCode != 200 {
+		t.Fatalf("status %d", resp.StatusCode)
+	}
+	if cc := resp.Header.Get("Cache-Control"); cc != "public, max-age=60" {
+		t.Errorf("Cache-Control = %q", cc)
+	}
+	if resp.Header.Get("ETag") == "" {
+		t.Error("JWKS must carry a strong ETag")
+	}
+
+	k := jwkByKid(t, body, "cert-hanzo")
+	if k["kty"] != "RSA" || k["alg"] != "RS256" || k["use"] != "sig" {
+		t.Errorf("jwk header wrong: %v", k)
+	}
+	// n encodes the real modulus.
+	nb, err := base64.RawURLEncoding.DecodeString(k["n"].(string))
+	if err != nil {
+		t.Fatalf("decode n: %v", err)
+	}
+	if new(big.Int).SetBytes(nb).Cmp(sharedKey(t).N) != 0 {
+		t.Error("jwk modulus does not match the signing key")
+	}
+	// Private material must never appear.
+	for _, secret := range []string{"d", "p", "q", "dp", "dq", "qi"} {
+		if _, bad := k[secret]; bad {
+			t.Fatalf("JWKS leaked private RSA parameter %q", secret)
+		}
+	}
+}
+
+// A conditional GET with the current ETag is answered 304 (parity with live).
+func TestJWKS_ETag304(t *testing.T) {
+	app, db := newServer(t)
+	seedRSACert(t, db, "cert-hanzo")
+
+	resp, _ := do(t, app, formReqNoBody("GET", PathJWKS))
+	etag := resp.Header.Get("ETag")
+	req := formReqNoBody("GET", PathJWKS)
+	req.Header.Set("If-None-Match", etag)
+	resp2, _ := do(t, app, req)
+	if resp2.StatusCode != 304 {
+		t.Fatalf("conditional GET status = %d, want 304", resp2.StatusCode)
+	}
+}
+
+// A post-quantum ML-DSA-65 cert is published as {kty:MLDSA, alg:MLDSA65, x}.
+func TestJWKS_PublishesMLDSAKey(t *testing.T) {
+	app, db := newServer(t)
+	seedMLDSACert(t, db, "cert-pq")
+
+	_, body := do(t, app, formReqNoBody("GET", PathJWKS))
+	k := jwkByKid(t, body, "cert-pq")
+	if k["kty"] != "MLDSA" || k["alg"] != "MLDSA65" || k["use"] != "sig" {
+		t.Errorf("mldsa jwk header wrong: %v", k)
+	}
+	if x, _ := k["x"].(string); x == "" {
+		t.Error("mldsa jwk missing raw public key x")
+	}
+}
+
+// A TLS/SSL certificate is not a token-signing key and is excluded.
+func TestJWKS_ExcludesTLSCert(t *testing.T) {
+	app, db := newServer(t)
+	seedRSACert(t, db, "cert-hanzo")
+	c := orm.New[schema.Cert](db)
+	c.Owner = "admin"
+	c.Name = "cert-tls"
+	c.Type = "SSL"
+	c.CryptoAlgorithm = "RS256"
+	c.PrivateKey = rsaKeyToPEM(t, sharedKey(t))
+	c.SetId("admin/cert-tls")
+	if err := c.CreateCtx(tctx()); err != nil {
+		t.Fatal(err)
+	}
+
+	_, body := do(t, app, formReqNoBody("GET", PathJWKS))
+	if hasKid(t, body, "cert-tls") {
+		t.Fatal("TLS cert must not appear in the JWKS")
+	}
+	if !hasKid(t, body, "cert-hanzo") {
+		t.Fatal("signing cert missing from JWKS")
+	}
+}
+
+// A cert owned by a non-platform org is never published, so a tenant cannot
+// inject a signing key under a chosen kid.
+func TestJWKS_ExcludesNonPlatformCert(t *testing.T) {
+	app, db := newServer(t)
+	seedRSACert(t, db, "cert-hanzo") // admin-owned, trusted
+	c := orm.New[schema.Cert](db)
+	c.Owner = "attacker-org"
+	c.Name = "cert-evil"
+	c.CryptoAlgorithm = "RS256"
+	c.PrivateKey = rsaKeyToPEM(t, sharedKey(t))
+	c.SetId("attacker-org/cert-evil")
+	if err := c.CreateCtx(tctx()); err != nil {
+		t.Fatal(err)
+	}
+
+	_, body := do(t, app, formReqNoBody("GET", PathJWKS))
+	if hasKid(t, body, "cert-evil") {
+		t.Fatal("a non-platform cert must not appear in the JWKS")
+	}
+	if !hasKid(t, body, "cert-hanzo") {
+		t.Fatal("platform signing cert missing from JWKS")
+	}
+}
+
+// Keys are deduplicated by kid so a name reused across owners publishes once.
+func TestJWKS_DedupesByKid(t *testing.T) {
+	app, db := newServer(t)
+	// Two TRUSTED platform owners hold a cert of the same name; the JWKS must
+	// publish that kid exactly once.
+	for _, owner := range []string{"admin", "built-in"} {
+		c := orm.New[schema.Cert](db)
+		c.Owner = owner
+		c.Name = "cert-shared"
+		c.CryptoAlgorithm = "RS256"
+		c.PrivateKey = rsaKeyToPEM(t, sharedKey(t))
+		c.SetId(owner + "/cert-shared")
+		if err := c.CreateCtx(tctx()); err != nil {
+			t.Fatal(err)
+		}
+	}
+	_, body := do(t, app, formReqNoBody("GET", PathJWKS))
+	set := decode(t, body)
+	keys, _ := set["keys"].([]any)
+	count := 0
+	for _, k := range keys {
+		if k.(map[string]any)["kid"] == "cert-shared" {
+			count++
+		}
+	}
+	if count != 1 {
+		t.Fatalf("kid cert-shared published %d times, want 1", count)
+	}
+}
+
+// --- helpers ---
+
+func jwkByKid(t *testing.T, body []byte, kid string) map[string]any {
+	t.Helper()
+	set := decode(t, body)
+	keys, _ := set["keys"].([]any)
+	for _, k := range keys {
+		m := k.(map[string]any)
+		if m["kid"] == kid {
+			return m
+		}
+	}
+	t.Fatalf("kid %q not found in JWKS %s", kid, string(body))
+	return nil
+}
+
+func hasKid(t *testing.T, body []byte, kid string) bool {
+	t.Helper()
+	set := decode(t, body)
+	keys, _ := set["keys"].([]any)
+	for _, k := range keys {
+		if k.(map[string]any)["kid"] == kid {
+			return true
+		}
+	}
+	return false
+}

internal/oidc/jwt.go

@@ -0,0 +1,328 @@
+// Copyright 2026 Hanzo AI, Inc. All rights reserved.
+
+package oidc
+
+import (
+	"crypto"
+	"crypto/ecdsa"
+	"crypto/rsa"
+	"crypto/x509"
+	"encoding/pem"
+	"errors"
+	"fmt"
+	"time"
+
+	"github.com/golang-jwt/jwt/v5"
+
+	"github.com/hanzoai/iam/internal/schema"
+)
+
+// JWT token signing. The signing algorithm is a property of the signing Cert's
+// key, not a global: an RSA cert signs RS256 (the interoperable default that the
+// live hanzo.id JWKS serves), an EC cert signs ES256/384/512, and a post-quantum
+// ML-DSA-65 cert signs MLDSA65 (mldsa.go, behind the same jwt.SigningMethod
+// seam). The classical path is the load-bearing interop path — every existing
+// verifier reads the RS256 keys published in the JWKS; ML-DSA is additive and
+// inert until an ML-DSA Cert is configured. Keys come from the Cert entity
+// (KMS-backed); tests inject an ephemeral in-memory key through the same path.
+
+// Claims is the iam2 token claim set: the standard registered claims plus the
+// Hanzo first-class claims the SDK and downstream validators read. owner and
+// organization are the tenant (both the org slug); scope carries the granted
+// scopes; nonce is echoed into the id_token; tokenType distinguishes an
+// access-token from an id-token. A field is emitted only when populated, so one
+// struct serves both token shapes without leaking empty claims.
+type Claims struct {
+	jwt.RegisteredClaims
+	Scope        string `json:"scope,omitempty"`
+	Owner        string `json:"owner,omitempty"`
+	Organization string `json:"organization,omitempty"`
+	Email        string `json:"email,omitempty"`
+	Name         string `json:"name,omitempty"`
+	Nonce        string `json:"nonce,omitempty"`
+	Azp          string `json:"azp,omitempty"`
+	TokenType    string `json:"tokenType,omitempty"`
+}
+
+// Signer signs tokens with one key under one algorithm. Immutable after
+// construction; the (method, key, kid, alg) tuple is fixed to the Cert it was
+// built from so a token can never be signed under a key/alg mismatch.
+type Signer struct {
+	method jwt.SigningMethod
+	key    any    // *rsa.PrivateKey | *ecdsa.PrivateKey | *mldsa65.PrivateKey
+	kid    string // JWKS key id — the Cert name
+	alg    string // JOSE alg — "RS256" | "ES256" | … | "MLDSA65"
+	issuer string
+}
+
+// NewSignerFromCert builds a Signer from a Cert, selecting the algorithm from
+// the cert's key type: RSA → RS256 (or RS512 when the app pins it), EC → ES256/
+// ES384/ES512 by curve, ML-DSA → MLDSA65. issuer is the canonical OIDC issuer
+// (https://<host>) that discovery advertises; it is pinned into every token so
+// id_token `iss` matches the discovery document. app may be nil (the method is
+// then chosen purely from the key type).
+func NewSignerFromCert(cert *schema.Cert, app *schema.Application, issuer string) (*Signer, error) {
+	if cert == nil {
+		return nil, errors.New("jwt: nil cert")
+	}
+	// Post-quantum ML-DSA-65 cert: raw key material, own signing method.
+	if isMLDSACert(cert) {
+		key, err := parseMLDSA65PrivateKey(cert.PrivateKey)
+		if err != nil {
+			return nil, err
+		}
+		return &Signer{method: SigningMethodMLDSA65, key: key, kid: cert.Name, alg: algMLDSA65, issuer: issuer}, nil
+	}
+	if cert.PrivateKey == "" {
+		return nil, errors.New("jwt: cert has no private key")
+	}
+	key, err := parsePrivateKeyPEM(cert.PrivateKey)
+	if err != nil {
+		return nil, err
+	}
+	method, alg, err := methodForKey(key, pinnedMethod(app))
+	if err != nil {
+		return nil, err
+	}
+	return &Signer{method: method, key: key, kid: cert.Name, alg: alg, issuer: issuer}, nil
+}
+
+// NewRSASignerFromCert builds an RS256 Signer from a Cert whose PrivateKey is a
+// PEM RSA key. Retained as the explicit RSA constructor; NewSignerFromCert is
+// the general dispatch used by the token endpoint.
+func NewRSASignerFromCert(cert *schema.Cert, issuer string) (*Signer, error) {
+	if cert == nil || cert.PrivateKey == "" {
+		return nil, errors.New("jwt: cert has no private key")
+	}
+	key, err := parseRSAPrivateKeyPEM(cert.PrivateKey)
+	if err != nil {
+		return nil, err
+	}
+	return &Signer{method: jwt.SigningMethodRS256, key: key, kid: cert.Name, alg: "RS256", issuer: issuer}, nil
+}
+
+// NewRSASigner builds an RS256 Signer directly from an RSA key (tests and, in
+// dev, an ephemeral key when no Cert is configured).
+func NewRSASigner(key *rsa.PrivateKey, kid, issuer string) *Signer {
+	return &Signer{method: jwt.SigningMethodRS256, key: key, kid: kid, alg: "RS256", issuer: issuer}
+}
+
+// Sign issues a signed access token for (app, user) with the given scope. now is
+// injected for testability; ttl is the token lifetime. The audience is the app's
+// clientId (validators fail closed when aud != clientId).
+func (s *Signer) Sign(app *schema.Application, userID, email, name, scope string, ttl time.Duration, now time.Time) (string, error) {
+	if s == nil {
+		return "", errors.New("jwt: nil signer")
+	}
+	jti, err := newOpaqueToken()
+	if err != nil {
+		return "", err
+	}
+	claims := Claims{
+		RegisteredClaims: jwt.RegisteredClaims{
+			Issuer:    s.issuer,
+			Subject:   userID,
+			Audience:  audienceFor(app, ""),
+			ExpiresAt: jwt.NewNumericDate(now.Add(ttl)),
+			NotBefore: jwt.NewNumericDate(now),
+			IssuedAt:  jwt.NewNumericDate(now),
+			ID:        jti,
+		},
+		Scope:        scope,
+		Owner:        app.Organization,
+		Organization: app.Organization,
+		Email:        email,
+		Name:         name,
+		Azp:          app.ClientId,
+		TokenType:    "access-token",
+	}
+	return s.signClaims(claims)
+}
+
+// SignUserToken mints an access token a confidential client issues ON BEHALF OF a
+// target user — the RFC 8693 Token Exchange grant. Unlike Sign (which stamps the
+// APP's org as the owner claim), every authority claim here is the TARGET USER's:
+// the subject and owner are the user's, so a resource server that scopes on the
+// validated `owner` claim (cloud's SanitizeIdentity) scopes to the USER's tenant,
+// never the minting client's. `aud` is the caller-resolved audience (an explicit
+// RFC 8707 resource, else the user's own app) and `azp` records the minting
+// client. Signed under this signer's trusted cert + canonical issuer, so the same
+// JWKS verifies it — the token is indistinguishable from one the user obtained
+// directly, which is the point. The Signer stays decoupled from schema.User: the
+// handler resolves and passes the values it authorized.
+func (s *Signer) SignUserToken(subject, owner, aud, azp, email, name, scope string, ttl time.Duration, now time.Time) (string, error) {
+	if s == nil {
+		return "", errors.New("jwt: nil signer")
+	}
+	jti, err := newOpaqueToken()
+	if err != nil {
+		return "", err
+	}
+	claims := Claims{
+		RegisteredClaims: jwt.RegisteredClaims{
+			Issuer:    s.issuer,
+			Subject:   subject,
+			Audience:  jwt.ClaimStrings{aud},
+			ExpiresAt: jwt.NewNumericDate(now.Add(ttl)),
+			NotBefore: jwt.NewNumericDate(now),
+			IssuedAt:  jwt.NewNumericDate(now),
+			ID:        jti,
+		},
+		Scope:        scope,
+		Owner:        owner,
+		Organization: owner,
+		Email:        email,
+		Name:         name,
+		Azp:          azp,
+		TokenType:    "access-token",
+	}
+	return s.signClaims(claims)
+}
+
+// SignID issues an OIDC id_token for (app, user). It differs from the access
+// token by carrying the echoed nonce and by declaring tokenType "id-token"; the
+// audience is the client the token was minted for (the RP), and iss matches the
+// discovery issuer so a standard OIDC client validates it.
+func (s *Signer) SignID(app *schema.Application, userID, email, name, scope, nonce string, ttl time.Duration, now time.Time) (string, error) {
+	if s == nil {
+		return "", errors.New("jwt: nil signer")
+	}
+	jti, err := newOpaqueToken()
+	if err != nil {
+		return "", err
+	}
+	claims := Claims{
+		RegisteredClaims: jwt.RegisteredClaims{
+			Issuer:    s.issuer,
+			Subject:   userID,
+			Audience:  jwt.ClaimStrings{app.ClientId},
+			ExpiresAt: jwt.NewNumericDate(now.Add(ttl)),
+			IssuedAt:  jwt.NewNumericDate(now),
+			NotBefore: jwt.NewNumericDate(now),
+			ID:        jti,
+		},
+		Scope:        scope,
+		Owner:        app.Organization,
+		Organization: app.Organization,
+		Email:        email,
+		Name:         name,
+		Nonce:        nonce,
+		Azp:          app.ClientId,
+		TokenType:    "id-token",
+	}
+	return s.signClaims(claims)
+}
+
+// signClaims is the single choke point that turns a claim set into a signed
+// compact JWS under this signer's fixed (method, key, kid).
+func (s *Signer) signClaims(claims Claims) (string, error) {
+	tok := jwt.NewWithClaims(s.method, claims)
+	if s.kid != "" {
+		tok.Header["kid"] = s.kid
+	}
+	return tok.SignedString(s.key)
+}
+
+// PublicKey returns the signer's RSA public key, or nil for a non-RSA signer
+// (JWKS + verification read the public key from the Cert, not the Signer).
+func (s *Signer) PublicKey() *rsa.PublicKey {
+	if k, ok := s.key.(*rsa.PrivateKey); ok {
+		return &k.PublicKey
+	}
+	return nil
+}
+
+// Kid returns the key id (the Cert name).
+func (s *Signer) Kid() string { return s.kid }
+
+// Alg returns the JOSE algorithm this signer uses (matches the JWKS `alg`).
+func (s *Signer) Alg() string { return s.alg }
+
+// audienceFor computes the token audience per RFC 8707: an explicit resource
+// indicator wins; a shared application scopes the audience to the org; otherwise
+// the audience is the client id (the value validators check).
+func audienceFor(app *schema.Application, resource string) jwt.ClaimStrings {
+	if resource != "" {
+		return jwt.ClaimStrings{resource}
+	}
+	if app.IsShared && app.Organization != "" {
+		return jwt.ClaimStrings{app.ClientId + "-org-" + app.Organization}
+	}
+	return jwt.ClaimStrings{app.ClientId}
+}
+
+// pinnedMethod is the app's requested signing method (TokenSigningMethod), or ""
+// to let the key type decide.
+func pinnedMethod(app *schema.Application) string {
+	if app == nil {
+		return ""
+	}
+	return app.TokenSigningMethod
+}
+
+// methodForKey maps a parsed private key (and an optional app-pinned method
+// within the same family) to a jwt.SigningMethod and its JOSE alg name.
+func methodForKey(key any, pinned string) (jwt.SigningMethod, string, error) {
+	switch k := key.(type) {
+	case *rsa.PrivateKey:
+		if pinned == "RS512" {
+			return jwt.SigningMethodRS512, "RS512", nil
+		}
+		return jwt.SigningMethodRS256, "RS256", nil
+	case *ecdsa.PrivateKey:
+		switch k.Curve.Params().BitSize {
+		case 256:
+			return jwt.SigningMethodES256, "ES256", nil
+		case 384:
+			return jwt.SigningMethodES384, "ES384", nil
+		case 521:
+			return jwt.SigningMethodES512, "ES512", nil
+		}
+		return nil, "", fmt.Errorf("jwt: unsupported EC curve bit size %d", k.Curve.Params().BitSize)
+	default:
+		return nil, "", errors.New("jwt: unsupported private key type")
+	}
+}
+
+// parsePrivateKeyPEM decodes a classical (RSA or EC) PEM private key.
+func parsePrivateKeyPEM(pemText string) (crypto.Signer, error) {
+	block, _ := pem.Decode([]byte(pemText))
+	if block == nil {
+		return nil, errors.New("jwt: private key is not valid PEM")
+	}
+	if k, err := x509.ParsePKCS1PrivateKey(block.Bytes); err == nil {
+		return k, nil
+	}
+	if k, err := x509.ParseECPrivateKey(block.Bytes); err == nil {
+		return k, nil
+	}
+	k8, err := x509.ParsePKCS8PrivateKey(block.Bytes)
+	if err != nil {
+		return nil, fmt.Errorf("jwt: parse private key: %w", err)
+	}
+	signer, ok := k8.(crypto.Signer)
+	if !ok {
+		return nil, errors.New("jwt: PKCS#8 key is not a signing key")
+	}
+	return signer, nil
+}
+
+// parseRSAPrivateKeyPEM decodes a PEM RSA private key (PKCS#1 or PKCS#8).
+func parseRSAPrivateKeyPEM(pemText string) (*rsa.PrivateKey, error) {
+	block, _ := pem.Decode([]byte(pemText))
+	if block == nil {
+		return nil, errors.New("jwt: private key is not valid PEM")
+	}
+	if k, err := x509.ParsePKCS1PrivateKey(block.Bytes); err == nil {
+		return k, nil
+	}
+	k8, err := x509.ParsePKCS8PrivateKey(block.Bytes)
+	if err != nil {
+		return nil, fmt.Errorf("jwt: parse private key: %w", err)
+	}
+	rk, ok := k8.(*rsa.PrivateKey)
+	if !ok {
+		return nil, errors.New("jwt: private key is not RSA")
+	}
+	return rk, nil
+}

internal/oidc/jwt_test.go

@@ -0,0 +1,131 @@
+// Copyright 2026 Hanzo AI, Inc. All rights reserved.
+
+package oidc
+
+import (
+	"crypto/rsa"
+	"testing"
+	"time"
+
+	"github.com/golang-jwt/jwt/v5"
+
+	"github.com/hanzoai/iam/internal/schema"
+)
+
+// testKey is a small (fast) RSA key — fine for tests; production uses the Cert.
+func testKey(t *testing.T) *rsa.PrivateKey {
+	t.Helper()
+	// A fixed 2048-bit key generated once would be faster, but generating keeps
+	// the test self-contained. 2048 is the JWKS minimum.
+	k, err := rsaGenTest()
+	if err != nil {
+		t.Fatal(err)
+	}
+	return k
+}
+
+func TestSign_RoundTripAndClaims(t *testing.T) {
+	key := testKey(t)
+	s := NewRSASigner(key, "cert-hanzo", "https://iam.hanzo.ai")
+	now := time.Unix(1_800_000_000, 0)
+	app := testApp()
+
+	tokenStr, err := s.Sign(app, "hanzo/alice", "alice@hanzo.ai", "Alice", "openid profile", time.Hour, now)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	// Verify with the public key + assert every claim.
+	var claims Claims
+	parsed, err := jwt.ParseWithClaims(tokenStr, &claims, func(*jwt.Token) (any, error) {
+		return &key.PublicKey, nil
+	}, jwt.WithValidMethods([]string{"RS256"}), jwt.WithTimeFunc(func() time.Time { return now.Add(time.Minute) }))
+	if err != nil {
+		t.Fatalf("verify: %v", err)
+	}
+	if !parsed.Valid {
+		t.Fatal("token not valid")
+	}
+	if kid, _ := parsed.Header["kid"].(string); kid != "cert-hanzo" {
+		t.Fatalf("kid = %q, want cert-hanzo", kid)
+	}
+	if claims.Issuer != "https://iam.hanzo.ai" {
+		t.Fatalf("iss = %q", claims.Issuer)
+	}
+	if claims.Subject != "hanzo/alice" {
+		t.Fatalf("sub = %q", claims.Subject)
+	}
+	if len(claims.Audience) != 1 || claims.Audience[0] != "hanzo-console" {
+		t.Fatalf("aud = %v, want [hanzo-console]", claims.Audience)
+	}
+	if claims.Owner != "hanzo" {
+		t.Fatalf("owner = %q, want hanzo", claims.Owner)
+	}
+	if claims.Scope != "openid profile" || claims.Email != "alice@hanzo.ai" {
+		t.Fatalf("scope/email wrong: %q / %q", claims.Scope, claims.Email)
+	}
+	if claims.ID == "" {
+		t.Fatal("jti empty — every token must be uniquely identifiable")
+	}
+}
+
+func TestSign_ExpiredTokenRejected(t *testing.T) {
+	key := testKey(t)
+	s := NewRSASigner(key, "cert-hanzo", "https://iam.hanzo.ai")
+	now := time.Unix(1_800_000_000, 0)
+	tokenStr, err := s.Sign(testApp(), "u", "", "", "openid", time.Minute, now)
+	if err != nil {
+		t.Fatal(err)
+	}
+	// Validate well after expiry.
+	var claims Claims
+	_, err = jwt.ParseWithClaims(tokenStr, &claims, func(*jwt.Token) (any, error) { return &key.PublicKey, nil },
+		jwt.WithValidMethods([]string{"RS256"}), jwt.WithTimeFunc(func() time.Time { return now.Add(2 * time.Minute) }))
+	if err == nil {
+		t.Fatal("expired token accepted")
+	}
+}
+
+func TestSign_WrongKeyRejected(t *testing.T) {
+	s := NewRSASigner(testKey(t), "cert-hanzo", "https://iam.hanzo.ai")
+	other := testKey(t)
+	now := time.Unix(1_800_000_000, 0)
+	tokenStr, _ := s.Sign(testApp(), "u", "", "", "openid", time.Hour, now)
+	var claims Claims
+	_, err := jwt.ParseWithClaims(tokenStr, &claims, func(*jwt.Token) (any, error) { return &other.PublicKey, nil },
+		jwt.WithValidMethods([]string{"RS256"}))
+	if err == nil {
+		t.Fatal("token verified under the wrong key")
+	}
+}
+
+func TestParseRSAPrivateKeyPEM_RejectsGarbage(t *testing.T) {
+	if _, err := parseRSAPrivateKeyPEM("not a pem"); err == nil {
+		t.Fatal("garbage PEM accepted")
+	}
+}
+
+func TestNewRSASignerFromCert_PEMRoundTrip(t *testing.T) {
+	key := testKey(t)
+	pemText := rsaKeyToPEM(t, key)
+	cert := &schema.Cert{PrivateKey: pemText}
+	cert.Name = "cert-hanzo"
+	s, err := NewRSASignerFromCert(cert, "https://iam.hanzo.ai")
+	if err != nil {
+		t.Fatalf("load from cert PEM: %v", err)
+	}
+	if s.Kid() != "cert-hanzo" || s.PublicKey() == nil {
+		t.Fatal("signer from cert missing kid/public key")
+	}
+	// Sign+verify to prove the parsed key works.
+	now := time.Unix(1_800_000_000, 0)
+	str, err := s.Sign(testApp(), "u", "", "", "openid", time.Hour, now)
+	if err != nil {
+		t.Fatal(err)
+	}
+	var claims Claims
+	if _, err := jwt.ParseWithClaims(str, &claims, func(*jwt.Token) (any, error) { return s.PublicKey(), nil },
+		jwt.WithValidMethods([]string{"RS256"}), jwt.WithTimeFunc(func() time.Time { return now.Add(time.Minute) })); err != nil {
+		t.Fatalf("verify with cert-loaded key: %v", err)
+	}
+}

internal/oidc/linkedaccounts.go

@@ -0,0 +1,95 @@
+// Copyright 2026 Hanzo AI, Inc. All rights reserved.
+
+package oidc
+
+import (
+	"reflect"
+	"strings"
+
+	"github.com/hanzoai/orm"
+	"github.com/zap-proto/zip"
+
+	"github.com/hanzoai/iam/internal/httpx"
+	"github.com/hanzoai/iam/internal/schema"
+	"github.com/hanzoai/iam/internal/store"
+)
+
+// GET /v1/iam/linked-accounts — the caller's linked social/OAuth identities.
+//
+// schema.User has NO single "linkedIdentities" array; a linked identity is stored as
+// the connector's own column (User.GitHub, User.Google, …) holding the federated
+// subject — the casdoor data model. So the linked accounts ARE those per-connector
+// columns that are set; this returns [{provider, subject}] for each non-empty one.
+// Each item carries only the subject string (the schema stores no per-link display
+// name / avatar / linkedAt), so a richer per-link shape is not available from iam2.
+// Self-scoped: resolved from the caller (callerOf), never the request.
+
+// PathLinkedAccounts is the canonical linked-identities endpoint.
+const PathLinkedAccounts = "/v1/iam/linked-accounts"
+
+// connectorTags is the set of User json tags that hold a linked federated-identity
+// subject — the casdoor per-connector columns (schema/user.go "Linked
+// federated-identity subjects"). ONE list; linked-accounts reflects the non-empty
+// ones out, so a new connector column is picked up by adding its tag here only.
+var connectorTags = fields(
+	"github google qq wechat facebook dingtalk weibo gitee linkedin wecom lark gitlab " +
+		"adfs baidu alipay iam infoflow apple azuread azureadb2c slack steam bilibili okta " +
+		"douyin kwai line amazon auth0 battlenet bitbucket box cloudfoundry dailymotion deezer " +
+		"digitalocean discord dropbox eveonline fitbit gitea heroku influxcloud instagram " +
+		"intercom kakao lastfm mailru meetup microsoftonline naver nextcloud onedrive oura " +
+		"patreon paypal salesforce shopify soundcloud spotify strava stripe telegram tiktok " +
+		"tumblr twitch twitter typetalk uber vk wepay xero yahoo yammer yandex zoom " +
+		"custom custom2 custom3 custom4 custom5 custom6 custom7 custom8 custom9 custom10")
+
+// linkedAccount is one linked social/OAuth identity.
+type linkedAccount struct {
+	Provider string `json:"provider"`
+	Subject  string `json:"subject"`
+}
+
+// linkedAccountsHandler returns the caller's linked identities.
+func linkedAccountsHandler(db orm.DB) zip.Handler {
+	return func(c *zip.Ctx) error {
+		ctx := c.Context()
+		owner, name, ok := callerOf(ctx, c, db)
+		if !ok {
+			return httpx.Err(c, "please sign in first")
+		}
+		user, err := store.GetUserByName(ctx, db, owner, name)
+		if err != nil {
+			return httpx.Err(c, "server_error")
+		}
+		if user == nil {
+			return httpx.Err(c, "the user does not exist")
+		}
+		return httpx.Ok(c, linkedAccountsOf(user))
+	}
+}
+
+// linkedAccountsOf reflects a user's non-empty connector columns into the linked list.
+// Reflection over the ONE connectorTags set avoids a per-field cascade and stays
+// faithful to whichever columns hold a subject.
+func linkedAccountsOf(u *schema.User) []linkedAccount {
+	out := []linkedAccount{}
+	v := reflect.ValueOf(*u)
+	t := v.Type()
+	for i := 0; i < t.NumField(); i++ {
+		tag, _, _ := strings.Cut(t.Field(i).Tag.Get("json"), ",")
+		if !connectorTags[tag] {
+			continue
+		}
+		if s := v.Field(i).String(); s != "" {
+			out = append(out, linkedAccount{Provider: tag, Subject: s})
+		}
+	}
+	return out
+}
+
+// fields turns a space-separated tag list into a set.
+func fields(list string) map[string]bool {
+	m := map[string]bool{}
+	for _, f := range strings.Fields(list) {
+		m[f] = true
+	}
+	return m
+}

internal/oidc/login.go

@@ -0,0 +1,226 @@
+// Copyright 2026 Hanzo AI, Inc. All rights reserved.
+
+package oidc
+
+import (
+	"context"
+	"strings"
+
+	"github.com/hanzoai/orm"
+	"github.com/zap-proto/zip"
+
+	"github.com/hanzoai/iam/internal/httpx"
+	"github.com/hanzoai/iam/internal/schema"
+	"github.com/hanzoai/iam/internal/sessions"
+	"github.com/hanzoai/iam/internal/store"
+	"github.com/hanzoai/iam/internal/users"
+)
+
+// The credential login front door: POST /v1/iam/login. The @hanzo/iam SDK +
+// hanzo.id portal post here with the app/org + username/password (+ the PKCE
+// authorize params when type=code). On success with type=code we mint a
+// PKCE-bound authorization code and return it in the Response envelope; the SDK
+// then exchanges it at /v1/iam/oauth/token. Login by EMAIL or USERNAME.
+//
+// This is the interactive-flow counterpart to the token endpoint: login mints
+// the code, /token redeems it. Password verification is bcrypt (constant-time),
+// never plaintext, and the hash never crosses a response.
+
+// PathLogin is the canonical credential-login endpoint.
+const PathLogin = "/v1/iam/login"
+
+// loginForm is the request body the SDK/portal posts.
+type loginForm struct {
+	Application  string `json:"application"`
+	Organization string `json:"organization"`
+	Username     string `json:"username"` // email OR username
+	Password     string `json:"password"`
+	Type         string `json:"type"` // "code" (PKCE authorize) | "device" (RFC 8628 approval) | "login" (bare session)
+
+	// UserCode is the RFC 8628 code the device displays, transcribed by the human
+	// approving it (type=device).
+	UserCode string `json:"userCode"`
+
+	// PKCE authorize passthrough (present when type=code).
+	ClientId            string `json:"clientId"`
+	RedirectUri         string `json:"redirectUri"`
+	State               string `json:"state"`
+	Scope               string `json:"scope"`
+	Nonce               string `json:"nonce"`
+	CodeChallenge       string `json:"codeChallenge"`
+	CodeChallengeMethod string `json:"codeChallengeMethod"`
+	Resource            string `json:"resource"`
+
+	// The second factor (present on the finishing request). Challenge names the
+	// outstanding ceremony; a browser returns it in the cookie the gate set and
+	// leaves this empty.
+	MfaType           string `json:"mfaType"`
+	Passcode          string `json:"passcode"`
+	RecoveryCode      string `json:"recoveryCode"`
+	EnableMfaRemember bool   `json:"enableMfaRemember"`
+	Challenge         string `json:"challenge"`
+}
+
+// routeLogin registers POST /v1/iam/login.
+func routeLogin(r zip.Router, db orm.DB) {
+	r.Post(PathLogin, loginHandler(db))
+}
+
+func loginHandler(db orm.DB) zip.Handler {
+	return func(c *zip.Ctx) error {
+		var f loginForm
+		if err := c.Bind(&f); err != nil {
+			return httpx.Err(c, "invalid request body")
+		}
+		ctx := c.Context()
+
+		// A post carrying no fresh credential but naming an outstanding challenge is
+		// the SECOND half of a sign-in this endpoint already gated: the second-factor
+		// answer. The principal comes from the challenge, never from the body.
+		if f.Username == "" && f.Password == "" {
+			if id := ReadChallenge(c, f.Challenge); id != "" {
+				return finishMfa(c, db, id, f)
+			}
+		}
+
+		if f.Organization == "" || f.Username == "" || f.Password == "" {
+			return httpx.Err(c, "organization, username and password are required")
+		}
+
+		user, err := resolveLoginUser(ctx, db, f.Organization, f.Username)
+		if err != nil {
+			return httpx.Err(c, err.Error())
+		}
+		// The hash algorithm is a property of the ROW, not a constant: use the
+		// user's PasswordType, falling back to the organization's (v1's
+		// object/check.go contract). Every live v1 row is argon2id — a bcrypt-only
+		// verify would fail every real login at cutover.
+		orgPasswordType := loginOrgPasswordType(ctx, db, f.Organization)
+		// One opaque failure for "no such user" and "wrong password" — no oracle
+		// that reveals whether the account exists.
+		if user == nil || !users.VerifyPassword(user, f.Password, orgPasswordType) {
+			return httpx.Err(c, "the username or password is incorrect")
+		}
+
+		// The password proved ONE factor. The gate holds the sign-in when a second
+		// factor is outstanding — before ANY token or device approval — and answers
+		// the request itself; a false means nothing more is owed. The verificationType
+		// is "" because a password proves none of the offerable factors.
+		org, err := store.GetOrganizationByName(ctx, db, user.Owner)
+		if err != nil {
+			return httpx.Err(c, err.Error())
+		}
+		gated, err := gate(c, db, user, org, "")
+		if err != nil {
+			return httpx.Err(c, err.Error())
+		}
+		if gated {
+			return nil
+		}
+
+		return loginGrant(c, db, user, f)
+	}
+}
+
+// loginGrant completes a sign-in that has passed the gate: a device approval, a
+// bare portal session, or a PKCE-bound authorization code. It is the ONE minting
+// tail every interactive path reaches — the credential post and the second-factor
+// finish alike — so the checks between "this is the user" and "here is the grant"
+// are stated once and cannot be true of one path and false of another.
+func loginGrant(c *zip.Ctx, db orm.DB, user *schema.User, f loginForm) error {
+	ctx := c.Context()
+
+	// type=device: approve a pending RFC 8628 device authorization against the
+	// identity now fully proven (device.go).
+	if f.Type == "device" {
+		return approveDevice(c, db, user, f.UserCode)
+	}
+
+	userID := user.Owner + "/" + user.Name
+
+	// type=login: a bare portal sign-in. Establish the durable session the portal +
+	// the gateway admin-guard read via get-account, then report the user id. The
+	// cookie is best-effort — a session failure never blocks a valid login.
+	if f.Type != "code" {
+		_ = sessions.Set(ctx, c.Fiber(), db, user.Owner, user.Name, f.Application)
+		return httpx.Ok(c, userID)
+	}
+
+	// type=code: mint a PKCE-bound authorization code for the OAuth flow. The org is
+	// the USER's own, from the loaded row, so a second-factor post (which carries no
+	// organization field) is checked exactly like the first.
+	app, err := resolveLoginApp(ctx, db, f)
+	if err != nil {
+		return httpx.Err(c, err.Error())
+	}
+	if app == nil {
+		return httpx.Err(c, "the application does not exist")
+	}
+	if user.Owner != app.Organization && !app.IsShared && app.OrgChoiceMode == "" {
+		return httpx.Err(c, "the user is not permitted to sign in to this application")
+	}
+	// Bind the code to an EXACTLY-registered redirect URI (RFC 6749 §3.1.2.3); the
+	// token endpoint re-checks it. A supplied-but-unregistered URI is refused.
+	if f.RedirectUri != "" && !app.IsRedirectUriValid(f.RedirectUri) {
+		return httpx.Err(c, "invalid redirect_uri")
+	}
+	method := normalizeChallengeMethod(f.CodeChallenge, f.CodeChallengeMethod)
+	if f.CodeChallenge != "" && method != "S256" {
+		return httpx.Err(c, "only S256 PKCE is supported")
+	}
+	// A public client (no secret) must use PKCE — no downgrade.
+	if app.ClientSecret == "" && f.CodeChallenge == "" {
+		return httpx.Err(c, "PKCE is required for public clients")
+	}
+	code, err := MintCode(app, userID, f.Scope, f.CodeChallenge, method, f.Resource, nowFunc())
+	if err != nil {
+		return httpx.Err(c, err.Error())
+	}
+	// Bind the redirect_uri and nonce onto the code so the token exchange can
+	// re-verify the redirect and echo the nonce into the id_token.
+	code.RedirectUri = f.RedirectUri
+	code.Nonce = f.Nonce
+	if err := store.PersistToken(ctx, db, code); err != nil {
+		return httpx.Err(c, err.Error())
+	}
+	// The SDK reads data as the authorization code to exchange at /token.
+	return httpx.Ok(c, code.Code)
+}
+
+// resolveLoginUser looks a user up by email (contains "@") or username, scoped
+// to the org.
+func resolveLoginUser(ctx context.Context, db orm.DB, org, identifier string) (*schema.User, error) {
+	if strings.Contains(identifier, "@") {
+		u, err := store.GetUserByEmail(ctx, db, org, identifier)
+		if err != nil || u != nil {
+			return u, err
+		}
+		// Fall through: some accounts set name = email (email is not indexed as
+		// a separate login) — try name too.
+	}
+	return store.GetUserByName(ctx, db, org, identifier)
+}
+
+// resolveLoginApp resolves the OAuth app for a type=code login: by clientId when
+// present, else by (org, application name).
+func resolveLoginApp(ctx context.Context, db orm.DB, f loginForm) (*schema.Application, error) {
+	if f.ClientId != "" {
+		return store.GetApplicationByClientId(ctx, db, f.ClientId)
+	}
+	if f.Application != "" {
+		return store.GetApplicationByName(ctx, db, "admin", f.Application)
+	}
+	return nil, nil
+}
+
+// loginOrgPasswordType returns the organization's PasswordType — the fallback
+// when a user row carries none. A missing org yields "" (the user's own type
+// then decides; if neither is set, cred.Verify fails closed rather than guessing
+// an algorithm).
+func loginOrgPasswordType(ctx context.Context, db orm.DB, org string) string {
+	o, err := store.GetOrganizationByName(ctx, db, org)
+	if err != nil || o == nil {
+		return ""
+	}
+	return o.PasswordType
+}

internal/oidc/login_mfa_test.go

@@ -0,0 +1,527 @@
+// Copyright 2026 Hanzo AI, Inc. All rights reserved.
+
+package oidc
+
+import (
+	"context"
+	"net/http"
+	"strings"
+	"testing"
+	"time"
+
+	"github.com/hanzoai/orm"
+	"github.com/pquerna/otp/totp"
+	"github.com/zap-proto/zip"
+
+	"github.com/hanzoai/iam/internal/mfa/factor"
+	"github.com/hanzoai/iam/internal/schema"
+)
+
+// The MFA gate at login, driven through the REAL mounted router. The contract is
+// not a status code: every one of these answers is a 200, because the envelope
+// carries the outcome. What matters is WHICH answer, and — the point of the whole
+// gate — whether a token row exists afterwards. A test that checked only the
+// status would pass while every 2FA user signed in with a password alone.
+
+// newApp mounts the OIDC surface on an EXISTING store, so a test can seed the
+// same db the router serves (newServer opens its own).
+func newApp(t *testing.T, db orm.DB) *zip.App {
+	t.Helper()
+	app := zip.New(zip.Config{AppName: "iam2-test", DisableStartupMessage: true})
+	// The OIDC surface is the pre-auth PUBLIC group; login + the challenge finish
+	// both live here, so a root (empty-prefix) router mounts them at their absolute
+	// paths (main renamed Mount→Route on the zip-group model).
+	Route(app.Group(""), db)
+	return app
+}
+
+// enrolled seeds a user with a password AND a live TOTP factor, returning the
+// TOTP secret.
+func enrolled(t *testing.T, db orm.DB, name, password string) string {
+	t.Helper()
+	seedUser(t, db, name, name+"@hanzo.ai", password)
+	secret, _, err := factor.Enroll("hanzo/"+name, "Hanzo")
+	if err != nil {
+		t.Fatal(err)
+	}
+	u, err := orm.TypedQuery[schema.User](db).Filter("Owner=", "hanzo").Filter("Name=", name).First()
+	if err != nil {
+		t.Fatal(err)
+	}
+	u.TotpSecret = secret
+	u.PreferredMfaType = factor.App
+	if err := u.UpdateCtx(context.Background()); err != nil {
+		t.Fatal(err)
+	}
+	return secret
+}
+
+// tokens counts persisted token rows — the store-side proof that no credential
+// was minted. The gate's whole job is that this stays zero until the second
+// factor lands.
+func tokens(t *testing.T, db orm.DB) int {
+	t.Helper()
+	n, err := orm.TypedQuery[schema.Token](db).Count(context.Background())
+	if err != nil {
+		t.Fatal(err)
+	}
+	return n
+}
+
+// passcode computes the code an authenticator would show right now.
+func passcode(t *testing.T, secret string) string {
+	t.Helper()
+	code, err := totp.GenerateCode(secret, time.Now().UTC())
+	if err != nil {
+		t.Fatal(err)
+	}
+	return code
+}
+
+// challengeOf extracts the challenge id the gate set as a cookie.
+func challengeOf(t *testing.T, resp *http.Response) string {
+	t.Helper()
+	for _, ck := range resp.Cookies() {
+		if ck.Name == challengeCookie && ck.Value != "" {
+			return ck.Value
+		}
+	}
+	t.Fatal("the gate set no challenge cookie")
+	return ""
+}
+
+// TestEnrolledUserIsChallengedAndGetsNoToken is THE regression. Before the gate,
+// login verified the password and minted a code directly: an enrolled user signed
+// in with one factor and the second was never asked for. Not a missing feature —
+// a silent downgrade of every 2FA account.
+func TestEnrolledUserIsChallengedAndGetsNoToken(t *testing.T) {
+	db := openTestDB(t)
+	app := newApp(t, db)
+	seedApp(t, db, appOpts{clientID: "hanzo-app", secret: "s3cret"})
+	enrolled(t, db, "alice", "correct horse battery staple")
+
+	resp, body := do(t, app, jsonReq("POST", PathLogin, map[string]string{
+		"organization": "hanzo", "username": "alice", "password": "correct horse battery staple",
+		"type": "code", "clientId": "hanzo-app",
+	}))
+	m := decode(t, body)
+
+	if m["status"] != "ok" {
+		t.Fatalf("gate answered an error: %v", m["msg"])
+	}
+	// `data` is the literal string the portal compares against. Any other shape
+	// and the client reads it as an authorization code.
+	if m["data"] != NextMfa {
+		t.Fatalf("data = %q, want %q — the client treats anything else as a code, so MFA is bypassed", m["data"], NextMfa)
+	}
+	// data2 carries the factors to choose from.
+	list, ok := m["data2"].([]any)
+	if !ok || len(list) != 1 {
+		t.Fatalf("data2 = %#v, want exactly the one enrolled factor", m["data2"])
+	}
+	got := list[0].(map[string]any)
+	if got["mfaType"] != factor.App || got["enabled"] != true {
+		t.Fatalf("offered factor = %#v, want the enabled app factor", got)
+	}
+	// The masked projection must not carry the shared secret out.
+	if s := string(body); strings.Contains(s, "secret") || strings.Contains(s, "recoveryCodes") {
+		t.Fatalf("the challenge leaked secret material: %s", s)
+	}
+
+	// THE assertion: nothing was minted.
+	if n := tokens(t, db); n != 0 {
+		t.Fatalf("%d token row(s) persisted at the challenge — the password alone bought a credential", n)
+	}
+	challengeOf(t, resp)
+}
+
+// TestChallengeAnsweredWithPasscodeMintsCode — the happy path: the second factor
+// lands and the code appears.
+func TestChallengeAnsweredWithPasscodeMintsCode(t *testing.T) {
+	db := openTestDB(t)
+	app := newApp(t, db)
+	seedApp(t, db, appOpts{clientID: "hanzo-app", secret: "s3cret"})
+	secret := enrolled(t, db, "alice", "pw")
+
+	resp, _ := do(t, app, jsonReq("POST", PathLogin, map[string]string{
+		"organization": "hanzo", "username": "alice", "password": "pw",
+		"type": "code", "clientId": "hanzo-app",
+	}))
+	id := challengeOf(t, resp)
+
+	_, body := do(t, app, jsonReq("POST", PathLogin, map[string]any{
+		"type": "code", "clientId": "hanzo-app",
+		"challenge": id, "mfaType": factor.App, "passcode": passcode(t, secret),
+	}))
+	m := decode(t, body)
+	if m["status"] != "ok" {
+		t.Fatalf("the correct passcode was refused: %v", m["msg"])
+	}
+	code, _ := m["data"].(string)
+	if code == "" || code == NextMfa || code == RequiredMfa {
+		t.Fatalf("data = %q, want an authorization code", m["data"])
+	}
+	tok, err := store2GetTokenByCode(db, code)
+	if err != nil || tok == nil {
+		t.Fatalf("the minted code resolves to no token row: %v", err)
+	}
+	if tok.User != "hanzo/alice" {
+		t.Fatalf("code bound to %q, want hanzo/alice", tok.User)
+	}
+}
+
+// TestWrongPasscodeMintsNothing — a failed second factor must leave the sign-in
+// exactly where it was: nowhere.
+func TestWrongPasscodeMintsNothing(t *testing.T) {
+	db := openTestDB(t)
+	app := newApp(t, db)
+	seedApp(t, db, appOpts{clientID: "hanzo-app", secret: "s3cret"})
+	enrolled(t, db, "alice", "pw")
+
+	resp, _ := do(t, app, jsonReq("POST", PathLogin, map[string]string{
+		"organization": "hanzo", "username": "alice", "password": "pw",
+		"type": "code", "clientId": "hanzo-app",
+	}))
+	id := challengeOf(t, resp)
+
+	_, body := do(t, app, jsonReq("POST", PathLogin, map[string]any{
+		"type": "code", "clientId": "hanzo-app",
+		"challenge": id, "mfaType": factor.App, "passcode": "000000",
+	}))
+	if m := decode(t, body); m["status"] != "error" {
+		t.Fatalf("a wrong passcode was accepted: %#v", m)
+	}
+	if n := tokens(t, db); n != 0 {
+		t.Fatalf("%d token row(s) persisted for a wrong passcode", n)
+	}
+}
+
+// TestChallengeIsSingleUse — a challenge is spent by the attempt that takes it,
+// so a captured id cannot be replayed. The wrong passcode below spends it; the
+// RIGHT passcode afterwards must still fail, on the challenge and not the code.
+func TestChallengeIsSingleUse(t *testing.T) {
+	db := openTestDB(t)
+	app := newApp(t, db)
+	seedApp(t, db, appOpts{clientID: "hanzo-app", secret: "s3cret"})
+	secret := enrolled(t, db, "alice", "pw")
+
+	resp, _ := do(t, app, jsonReq("POST", PathLogin, map[string]string{
+		"organization": "hanzo", "username": "alice", "password": "pw",
+		"type": "code", "clientId": "hanzo-app",
+	}))
+	id := challengeOf(t, resp)
+
+	first := map[string]any{"type": "code", "clientId": "hanzo-app", "challenge": id, "mfaType": factor.App, "passcode": passcode(t, secret)}
+	if m := decode(t, mustBody(t, app, first)); m["status"] != "ok" {
+		t.Fatalf("first use failed: %v", m["msg"])
+	}
+	// Same id, same valid passcode, second time.
+	m := decode(t, mustBody(t, app, first))
+	if m["status"] != "error" {
+		t.Fatalf("a spent challenge was accepted again: %#v", m)
+	}
+	if m["msg"] != ErrChallenge.Error() {
+		t.Fatalf("msg = %q, want the challenge refusal %q", m["msg"], ErrChallenge.Error())
+	}
+}
+
+// TestChallengeBindsItsOwnSubject — invariant 3. A challenge minted for alice
+// must resolve alice even when the body names mallory. The user comes from the
+// verified server-side record, never from a request parameter.
+func TestChallengeBindsItsOwnSubject(t *testing.T) {
+	db := openTestDB(t)
+	app := newApp(t, db)
+	seedApp(t, db, appOpts{clientID: "hanzo-app", secret: "s3cret"})
+	secret := enrolled(t, db, "alice", "pw")
+	seedUser(t, db, "mallory", "mallory@hanzo.ai", "pw")
+
+	resp, _ := do(t, app, jsonReq("POST", PathLogin, map[string]string{
+		"organization": "hanzo", "username": "alice", "password": "pw",
+		"type": "code", "clientId": "hanzo-app",
+	}))
+	id := challengeOf(t, resp)
+
+	_, body := do(t, app, jsonReq("POST", PathLogin, map[string]any{
+		"type": "code", "clientId": "hanzo-app",
+		"challenge": id, "mfaType": factor.App, "passcode": passcode(t, secret),
+		// The body tries to redirect the ceremony at another account.
+		"username": "", "organization": "hanzo", "name": "mallory",
+	}))
+	m := decode(t, body)
+	if m["status"] != "ok" {
+		t.Fatalf("the ceremony failed: %v", m["msg"])
+	}
+	tok, err := store2GetTokenByCode(db, m["data"].(string))
+	if err != nil || tok == nil {
+		t.Fatal("no token row for the minted code")
+	}
+	if tok.User != "hanzo/alice" {
+		t.Fatalf("code bound to %q — the body redirected the challenge's subject", tok.User)
+	}
+}
+
+// TestRecoveryCodeIsAcceptedOnceAndStoredHashed proves three things at once: a
+// recovery code answers the challenge, it is CONSUMED (a second use fails), and
+// what sits in the row is a bcrypt digest — never the code itself.
+func TestRecoveryCodeIsAcceptedOnceAndStoredHashed(t *testing.T) {
+	db := openTestDB(t)
+	app := newApp(t, db)
+	seedApp(t, db, appOpts{clientID: "hanzo-app", secret: "s3cret"})
+	enrolled(t, db, "alice", "pw")
+
+	plain, err := factor.MintRecovery()
+	if err != nil {
+		t.Fatal(err)
+	}
+	hash, err := factor.HashRecovery(plain)
+	if err != nil {
+		t.Fatal(err)
+	}
+	u := userRow(t, db, "alice")
+	u.RecoveryCodes = []string{hash}
+	if err := u.UpdateCtx(context.Background()); err != nil {
+		t.Fatal(err)
+	}
+	if strings.Contains(hash, plain) {
+		t.Fatal("the stored value contains the plaintext recovery code")
+	}
+
+	login := map[string]string{"organization": "hanzo", "username": "alice", "password": "pw", "type": "code", "clientId": "hanzo-app"}
+	resp, _ := do(t, app, jsonReq("POST", PathLogin, login))
+	id := challengeOf(t, resp)
+
+	_, body := do(t, app, jsonReq("POST", PathLogin, map[string]any{
+		"type": "code", "clientId": "hanzo-app", "challenge": id, "recoveryCode": plain,
+	}))
+	m := decode(t, body)
+	if m["status"] != "ok" {
+		t.Fatalf("the recovery code was refused: %v", m["msg"])
+	}
+	if code, _ := m["data"].(string); code == "" || code == NextMfa {
+		t.Fatalf("data = %q, want an authorization code", m["data"])
+	}
+	// Spent: the row no longer carries it.
+	if got := userRow(t, db, "alice").RecoveryCodes; len(got) != 0 {
+		t.Fatalf("recovery codes after use = %v, want none — a one-time code survived", got)
+	}
+	// And a second sign-in cannot reuse it.
+	resp2, _ := do(t, app, jsonReq("POST", PathLogin, login))
+	_, body2 := do(t, app, jsonReq("POST", PathLogin, map[string]any{
+		"type": "code", "clientId": "hanzo-app", "challenge": challengeOf(t, resp2), "recoveryCode": plain,
+	}))
+	if m2 := decode(t, body2); m2["status"] != "error" {
+		t.Fatalf("a spent recovery code signed in a second time: %#v", m2)
+	}
+}
+
+// TestLegacyPlaintextRecoveryCodeStillVerifies — every recovery code migrated
+// from v1 is PLAINTEXT (object/factor.go:81 compares in the clear). The algorithm is
+// a property of the stored value, so a legacy row must still verify, and the
+// plaintext must die on first use.
+func TestLegacyPlaintextRecoveryCodeStillVerifies(t *testing.T) {
+	db := openTestDB(t)
+	app := newApp(t, db)
+	seedApp(t, db, appOpts{clientID: "hanzo-app", secret: "s3cret"})
+	enrolled(t, db, "alice", "pw")
+
+	const legacy = "0d5a7f0e-3a1e-4a1a-9f6c-2b1d3e4f5a6b" // a v1 uuid.NewString() code
+	u := userRow(t, db, "alice")
+	u.RecoveryCodes = []string{legacy}
+	if err := u.UpdateCtx(context.Background()); err != nil {
+		t.Fatal(err)
+	}
+
+	resp, _ := do(t, app, jsonReq("POST", PathLogin, map[string]string{
+		"organization": "hanzo", "username": "alice", "password": "pw", "type": "code", "clientId": "hanzo-app",
+	}))
+	_, body := do(t, app, jsonReq("POST", PathLogin, map[string]any{
+		"type": "code", "clientId": "hanzo-app", "challenge": challengeOf(t, resp), "recoveryCode": legacy,
+	}))
+	if m := decode(t, body); m["status"] != "ok" {
+		t.Fatalf("a migrated v1 plaintext recovery code was refused: %v — every live 2FA user's way back is gone", m["msg"])
+	}
+	if got := userRow(t, db, "alice").RecoveryCodes; len(got) != 0 {
+		t.Fatalf("the legacy plaintext survived its use: %v", got)
+	}
+}
+
+// TestPasscodeRefusedWhenItRepeatsTheUsedFactor — v1 controllers/auth.go:1325.
+// The factor already used to get here cannot answer for the one still owed.
+func TestPasscodeRefusedWhenItRepeatsTheUsedFactor(t *testing.T) {
+	db := openTestDB(t)
+	app := newApp(t, db)
+	seedApp(t, db, appOpts{clientID: "hanzo-app", secret: "s3cret"})
+	secret := enrolled(t, db, "alice", "pw")
+	u := userRow(t, db, "alice")
+
+	// A challenge whose payload says "the app factor was already used".
+	id, err := MintChallenge(context.Background(), db, KindMfa, "hanzo/"+u.Name, factor.App, time.Now())
+	if err != nil {
+		t.Fatal(err)
+	}
+	_, body := do(t, app, jsonReq("POST", PathLogin, map[string]any{
+		"type": "code", "clientId": "hanzo-app",
+		"challenge": id, "mfaType": factor.App, "passcode": passcode(t, secret),
+	}))
+	if m := decode(t, body); m["status"] != "error" {
+		t.Fatalf("the just-used factor answered its own challenge: %#v", m)
+	}
+	if n := tokens(t, db); n != 0 {
+		t.Fatalf("%d token row(s) persisted", n)
+	}
+}
+
+// TestRememberDeadlineRoundTrips — the "don't ask again" window short-circuits
+// the whole gate, so the value the writer writes must be the value the reader
+// reads. A format mismatch is silent: a permanent skip, or a permanent challenge.
+func TestRememberDeadlineRoundTrips(t *testing.T) {
+	db := openTestDB(t)
+	app := newApp(t, db)
+	seedApp(t, db, appOpts{clientID: "hanzo-app", secret: "s3cret"})
+	secret := enrolled(t, db, "alice", "pw")
+
+	// An org with a real remember window (live orgs leave it at zero).
+	o := orm.New[schema.Organization](db)
+	o.Owner, o.Name, o.MfaRememberInHours = "admin", "hanzo", 24
+	o.SetId("admin/hanzo")
+	if err := o.CreateCtx(context.Background()); err != nil {
+		t.Fatal(err)
+	}
+
+	login := map[string]string{"organization": "hanzo", "username": "alice", "password": "pw", "type": "code", "clientId": "hanzo-app"}
+	resp, _ := do(t, app, jsonReq("POST", PathLogin, login))
+	_, body := do(t, app, jsonReq("POST", PathLogin, map[string]any{
+		"type": "code", "clientId": "hanzo-app", "challenge": challengeOf(t, resp),
+		"mfaType": factor.App, "passcode": passcode(t, secret), "enableMfaRemember": true,
+	}))
+	if m := decode(t, body); m["status"] != "ok" {
+		t.Fatalf("the passcode was refused: %v", m["msg"])
+	}
+
+	// The exact stored string must parse for the exact reader the gate uses.
+	stored := userRow(t, db, "alice").MfaRememberDeadline
+	if stored == "" {
+		t.Fatal("enableMfaRemember wrote no deadline")
+	}
+	if !remembered(userRow(t, db, "alice"), time.Now()) {
+		t.Fatalf("the gate cannot read back the deadline it wrote (%q) — the window is silently dead", stored)
+	}
+
+	// A future deadline SKIPS the challenge: the next password login mints.
+	_, body2 := do(t, app, jsonReq("POST", PathLogin, login))
+	m2 := decode(t, body2)
+	if m2["data"] == NextMfa {
+		t.Fatal("a live remember window still challenged")
+	}
+	if code, _ := m2["data"].(string); code == "" {
+		t.Fatalf("remembered login did not mint: %#v", m2)
+	}
+
+	// A PAST deadline challenges again.
+	u := userRow(t, db, "alice")
+	u.MfaRememberDeadline = time.Now().Add(-time.Hour).UTC().Format(time.RFC3339)
+	if err := u.UpdateCtx(context.Background()); err != nil {
+		t.Fatal(err)
+	}
+	_, body3 := do(t, app, jsonReq("POST", PathLogin, login))
+	if m3 := decode(t, body3); m3["data"] != NextMfa {
+		t.Fatalf("an expired remember window skipped the gate: %#v", m3)
+	}
+}
+
+// TestZeroRememberWindowStillChallenges pins the LIVE configuration: every
+// organization today leaves MfaRememberInHours at zero, which puts the deadline
+// in the past the instant it is written. "Fixing" a zero into an always-on skip
+// would turn 2FA off for every tenant at once.
+func TestZeroRememberWindowStillChallenges(t *testing.T) {
+	db := openTestDB(t)
+	app := newApp(t, db)
+	seedApp(t, db, appOpts{clientID: "hanzo-app", secret: "s3cret"})
+	secret := enrolled(t, db, "alice", "pw")
+
+	login := map[string]string{"organization": "hanzo", "username": "alice", "password": "pw", "type": "code", "clientId": "hanzo-app"}
+	resp, _ := do(t, app, jsonReq("POST", PathLogin, login))
+	do(t, app, jsonReq("POST", PathLogin, map[string]any{
+		"type": "code", "clientId": "hanzo-app", "challenge": challengeOf(t, resp),
+		"mfaType": factor.App, "passcode": passcode(t, secret), "enableMfaRemember": true,
+	}))
+
+	_, body := do(t, app, jsonReq("POST", PathLogin, login))
+	if m := decode(t, body); m["data"] != NextMfa {
+		t.Fatalf("a zero remember window skipped the gate: %#v — 2FA is off for every live org", m)
+	}
+}
+
+// TestOrgRequiredFactorPromptsEnrollment — v1 object/organization.go:770. The org
+// demands a factor the user has not enrolled, so the answer is "go enroll", not a
+// challenge it could never answer.
+func TestOrgRequiredFactorPromptsEnrollment(t *testing.T) {
+	db := openTestDB(t)
+	app := newApp(t, db)
+	seedApp(t, db, appOpts{clientID: "hanzo-app", secret: "s3cret"})
+	seedUser(t, db, "alice", "alice@hanzo.ai", "pw") // no factor
+
+	o := orm.New[schema.Organization](db)
+	o.Owner, o.Name = "admin", "hanzo"
+	o.MfaItems = []*schema.MfaItem{{Name: factor.App, Rule: "Required"}}
+	o.SetId("admin/hanzo")
+	if err := o.CreateCtx(context.Background()); err != nil {
+		t.Fatal(err)
+	}
+
+	_, body := do(t, app, jsonReq("POST", PathLogin, map[string]string{
+		"organization": "hanzo", "username": "alice", "password": "pw", "type": "code", "clientId": "hanzo-app",
+	}))
+	m := decode(t, body)
+	if m["data"] != RequiredMfa {
+		t.Fatalf("data = %q, want %q", m["data"], RequiredMfa)
+	}
+	if n := tokens(t, db); n != 0 {
+		t.Fatalf("%d token row(s) persisted while a required factor was missing", n)
+	}
+}
+
+// TestUnenrolledUserSignsInUnchanged — the gate must be invisible to everyone
+// else. A user with no factor still logs in with a password, exactly as before.
+func TestUnenrolledUserSignsInUnchanged(t *testing.T) {
+	db := openTestDB(t)
+	app := newApp(t, db)
+	seedApp(t, db, appOpts{clientID: "hanzo-app", secret: "s3cret"})
+	seedUser(t, db, "bob", "bob@hanzo.ai", "pw")
+
+	_, body := do(t, app, jsonReq("POST", PathLogin, map[string]string{
+		"organization": "hanzo", "username": "bob", "password": "pw", "type": "code", "clientId": "hanzo-app",
+	}))
+	m := decode(t, body)
+	if m["status"] != "ok" {
+		t.Fatalf("an unenrolled user was refused: %v", m["msg"])
+	}
+	if code, _ := m["data"].(string); code == "" || code == NextMfa || code == RequiredMfa {
+		t.Fatalf("data = %q, want an authorization code", m["data"])
+	}
+}
+
+// --- helpers ---
+
+func mustBody(t *testing.T, app *zip.App, body any) []byte {
+	t.Helper()
+	_, b := do(t, app, jsonReq("POST", PathLogin, body))
+	return b
+}
+
+func userRow(t *testing.T, db orm.DB, name string) *schema.User {
+	t.Helper()
+	u, err := orm.TypedQuery[schema.User](db).Filter("Owner=", "hanzo").Filter("Name=", name).First()
+	if err != nil {
+		t.Fatal(err)
+	}
+	return u
+}
+
+func store2GetTokenByCode(db orm.DB, code string) (*schema.Token, error) {
+	t, err := orm.TypedQuery[schema.Token](db).Filter("Code=", code).First()
+	if err == orm.ErrNotFound {
+		return nil, nil
+	}
+	return t, err
+}

internal/oidc/login_tenant_test.go

@@ -0,0 +1,75 @@
+// Copyright 2026 Hanzo AI, Inc. All rights reserved.
+
+package oidc
+
+import (
+	"context"
+	"testing"
+
+	"golang.org/x/crypto/bcrypt"
+
+	"github.com/hanzoai/orm"
+
+	"github.com/hanzoai/iam/internal/schema"
+)
+
+// seedUserInOrg creates a bcrypt-credentialed user in an arbitrary org.
+func seedUserInOrg(t *testing.T, db orm.DB, org, name, email, password string) {
+	t.Helper()
+	hash, err := bcrypt.GenerateFromPassword([]byte(password), bcrypt.MinCost)
+	if err != nil {
+		t.Fatal(err)
+	}
+	u := orm.New[schema.User](db)
+	u.Owner = org
+	u.Name = name
+	u.Email = email
+	u.PasswordHash = string(hash)
+	u.PasswordType = "bcrypt"
+	u.SetId(org + "/" + name)
+	if err := u.CreateCtx(context.Background()); err != nil {
+		t.Fatalf("seed user %s/%s: %v", org, name, err)
+	}
+}
+
+// A user authenticated in one tenant cannot obtain an authorization code for a
+// single-tenant application belonging to a different org — even with fully valid
+// credentials in their own org.
+func TestLogin_CrossOrgSignInRejected(t *testing.T) {
+	app, db := newServer(t)
+	seedApp(t, db, appOpts{clientID: "conf", secret: "s3cret", redirectURIs: []string{testRedirect}}) // org "hanzo"
+	seedUserInOrg(t, db, "lux", "eve", "eve@lux.example", "pw")                                       // valid user in org "lux"
+
+	f := map[string]string{
+		"organization": "lux", "username": "eve", "password": "pw",
+		"clientId": "conf", "redirectUri": testRedirect, "scope": "openid", "type": "code",
+	}
+	_, body := do(t, app, jsonReq("POST", PathLogin, f))
+	m := decode(t, body)
+	if m["status"] != "error" {
+		t.Fatalf("cross-org sign-in must be refused; got %v", m)
+	}
+	if code, _ := m["data"].(string); code != "" {
+		t.Fatalf("no code may be minted for a cross-org sign-in; got %q", code)
+	}
+}
+
+// A shared application legitimately accepts users from any org.
+func TestLogin_SharedAppAllowsCrossOrg(t *testing.T) {
+	app, db := newServer(t)
+	seedApp(t, db, appOpts{clientID: "shared", secret: "s3cret", redirectURIs: []string{testRedirect}, shared: true})
+	seedUserInOrg(t, db, "lux", "eve", "eve@lux.example", "pw")
+
+	f := map[string]string{
+		"organization": "lux", "username": "eve", "password": "pw",
+		"clientId": "shared", "redirectUri": testRedirect, "scope": "openid", "type": "code",
+	}
+	_, body := do(t, app, jsonReq("POST", PathLogin, f))
+	m := decode(t, body)
+	if m["status"] != "ok" {
+		t.Fatalf("shared app must accept a cross-org user; got %v", m)
+	}
+	if code, _ := m["data"].(string); code == "" {
+		t.Fatal("shared app cross-org sign-in should mint a code")
+	}
+}

internal/oidc/login_test.go

@@ -0,0 +1,92 @@
+// Copyright 2026 Hanzo AI, Inc. All rights reserved.
+
+package oidc
+
+import (
+	"context"
+	"testing"
+	"time"
+
+	"golang.org/x/crypto/bcrypt"
+
+	"github.com/hanzoai/orm"
+
+	"github.com/hanzoai/iam/internal/schema"
+	"github.com/hanzoai/iam/internal/store"
+)
+
+// seedUser creates a user with a bcrypt password in org "hanzo".
+func seedUser(t *testing.T, db orm.DB, name, email, password string) {
+	t.Helper()
+	hash, err := bcrypt.GenerateFromPassword([]byte(password), bcrypt.MinCost) // MinCost = fast tests
+	if err != nil {
+		t.Fatal(err)
+	}
+	u := orm.New[schema.User](db)
+	u.Owner = "hanzo"
+	u.Name = name
+	u.Email = email
+	u.PasswordHash = string(hash)
+	u.PasswordType = "bcrypt"
+	u.SetId("hanzo/" + name)
+	if err := u.CreateCtx(context.Background()); err != nil {
+		t.Fatalf("seed user: %v", err)
+	}
+}
+
+// TestLoginToTokenFlow is the full interactive round-trip: a password login
+// (verified with bcrypt) mints a PKCE-bound code, which the token endpoint
+// redeems into a signed JWT. Proves login→code→token end to end.
+func TestLoginToTokenFlow(t *testing.T) {
+	db := openTestDB(t)
+	key := mustGenRSA(t)
+	app := seedAppWithCert(t, db, key)
+	seedUser(t, db, "alice", "alice@hanzo.ai", "correct horse battery staple")
+	ctx := context.Background()
+	now := time.Unix(1_800_000_000, 0)
+
+	verifier := "login-verifier-000000000000000000000000000000000"
+	challenge := ComputeS256Challenge(verifier)
+
+	// --- login side: resolve app+user, verify password, mint the code ---
+	user, err := resolveLoginUser(ctx, db, "hanzo", "alice@hanzo.ai") // login by EMAIL
+	if err != nil || user == nil {
+		t.Fatalf("resolve user by email: %v (nil=%v)", err, user == nil)
+	}
+	code, err := MintCode(app, user.Owner+"/"+user.Name, "openid profile", challenge, "S256", "", now)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if err := store.PersistToken(ctx, db, code); err != nil {
+		t.Fatal(err)
+	}
+
+	// --- token side: redeem the code with the verifier ---
+	tok, _ := store.GetTokenByCode(ctx, db, code.Code)
+	if err := RedeemCode(tok, app.Name, verifier, now.Add(time.Second)); err != nil {
+		t.Fatalf("redeem: %v", err)
+	}
+	if tok.User != "hanzo/alice" {
+		t.Fatalf("code bound to wrong user: %q", tok.User)
+	}
+}
+
+func TestResolveLoginUser_ByUsernameAndEmail(t *testing.T) {
+	db := openTestDB(t)
+	ctx := context.Background()
+	seedUser(t, db, "bob", "bob@hanzo.ai", "pw")
+
+	byName, _ := resolveLoginUser(ctx, db, "hanzo", "bob")
+	if byName == nil || byName.Name != "bob" {
+		t.Fatal("login by username failed")
+	}
+	byEmail, _ := resolveLoginUser(ctx, db, "hanzo", "bob@hanzo.ai")
+	if byEmail == nil || byEmail.Name != "bob" {
+		t.Fatal("login by email failed")
+	}
+	// Wrong org → not found (tenant isolation).
+	other, _ := resolveLoginUser(ctx, db, "lux", "bob")
+	if other != nil {
+		t.Fatal("user resolved in the wrong org — tenant isolation broken")
+	}
+}

internal/oidc/logout.go

@@ -0,0 +1,60 @@
+// Copyright 2026 Hanzo AI, Inc. All rights reserved.
+
+package oidc
+
+import (
+	"context"
+	"net/url"
+	"strings"
+
+	"github.com/hanzoai/orm"
+	"github.com/zap-proto/zip"
+
+	"github.com/hanzoai/iam/internal/schema"
+	"github.com/hanzoai/iam/internal/store"
+)
+
+// The end-session endpoint: GET/POST /v1/iam/oauth/logout. iam2 holds no
+// server-side browser session to destroy here, so logout's security-relevant
+// job is the redirect: it bounces to post_logout_redirect_uri ONLY when that URI
+// is registered by the client named in a signature-verified id_token_hint —
+// never to an unvalidated absolute URL (open-redirect defense).
+func logoutHandler(db orm.DB) zip.Handler {
+	return func(c *zip.Ctx) error {
+		redirect := param(c, "post_logout_redirect_uri")
+		if redirect == "" {
+			return c.JSON(200, map[string]string{"status": "ok"})
+		}
+		app := appFromIDTokenHint(c.Context(), db, param(c, "id_token_hint"))
+		if app == nil || !app.IsRedirectUriValid(redirect) {
+			// No proof the caller owns the target — refuse to redirect.
+			return c.JSON(200, map[string]string{"status": "ok"})
+		}
+		if state := param(c, "state"); state != "" {
+			sep := "?"
+			if strings.Contains(redirect, "?") {
+				sep = "&"
+			}
+			redirect += sep + "state=" + url.QueryEscape(state)
+		}
+		return c.Redirect(302, redirect)
+	}
+}
+
+// appFromIDTokenHint resolves the application an id_token_hint was issued to, but
+// only when the hint's signature verifies. A forged or unsigned hint yields nil,
+// so it can never authorize a redirect.
+func appFromIDTokenHint(ctx context.Context, db orm.DB, hint string) *schema.Application {
+	if hint == "" {
+		return nil
+	}
+	claims, err := verifyToken(ctx, db, hint)
+	if err != nil || len(claims.Audience) == 0 {
+		return nil
+	}
+	app, err := store.GetApplicationByClientId(ctx, db, claims.Audience[0])
+	if err != nil {
+		return nil
+	}
+	return app
+}

internal/oidc/logout_test.go

@@ -0,0 +1,65 @@
+// Copyright 2026 Hanzo AI, Inc. All rights reserved.
+
+package oidc
+
+import (
+	"net/url"
+	"strings"
+	"testing"
+
+	"github.com/zap-proto/zip"
+)
+
+// idTokenHint runs the confidential flow and returns a verifiable id_token.
+func idTokenHint(t *testing.T, app *zip.App) string {
+	t.Helper()
+	code, _, _ := loginForCode(t, app, loginParams("conf", "openid"))
+	_, tok := exchangeCode(t, app, url.Values{
+		"code": {code}, "client_id": {"conf"}, "client_secret": {"s3cret"}, "redirect_uri": {testRedirect},
+	})
+	idt, _ := tok["id_token"].(string)
+	if idt == "" {
+		t.Fatal("no id_token issued")
+	}
+	return idt
+}
+
+// Logout only redirects to a post_logout_redirect_uri that is registered by the
+// client named in a signature-verified id_token_hint — never an open redirect.
+func TestLogout_RedirectSafety(t *testing.T) {
+	app, db := newServer(t)
+	seedApp(t, db, appOpts{clientID: "conf", secret: "s3cret", redirectURIs: []string{testRedirect}})
+	seedUser(t, db, "alice", "alice@hanzo.ai", "pw")
+
+	t.Run("no redirect param → 200", func(t *testing.T) {
+		resp, _ := do(t, app, formReqNoBody("GET", PathLogout))
+		if resp.StatusCode != 200 || resp.Header.Get("Location") != "" {
+			t.Fatalf("status=%d loc=%q", resp.StatusCode, resp.Header.Get("Location"))
+		}
+	})
+
+	t.Run("redirect without hint is refused (no open redirect)", func(t *testing.T) {
+		q := url.Values{"post_logout_redirect_uri": {"https://evil.example/x"}}
+		resp, _ := do(t, app, formReqNoBody("GET", PathLogout+"?"+q.Encode()))
+		if resp.StatusCode != 200 || resp.Header.Get("Location") != "" {
+			t.Fatalf("must not redirect without a verified hint: status=%d loc=%q", resp.StatusCode, resp.Header.Get("Location"))
+		}
+	})
+
+	t.Run("verified hint but unregistered redirect is refused", func(t *testing.T) {
+		q := url.Values{"post_logout_redirect_uri": {"https://evil.example/x"}, "id_token_hint": {idTokenHint(t, app)}}
+		resp, _ := do(t, app, formReqNoBody("GET", PathLogout+"?"+q.Encode()))
+		if resp.StatusCode != 200 || resp.Header.Get("Location") != "" {
+			t.Fatalf("unregistered redirect must be refused: status=%d loc=%q", resp.StatusCode, resp.Header.Get("Location"))
+		}
+	})
+
+	t.Run("verified hint + registered redirect is honored", func(t *testing.T) {
+		q := url.Values{"post_logout_redirect_uri": {testRedirect}, "id_token_hint": {idTokenHint(t, app)}, "state": {"s-9"}}
+		resp, _ := do(t, app, formReqNoBody("GET", PathLogout+"?"+q.Encode()))
+		loc := requireRedirect(t, resp, testRedirect)
+		if !strings.Contains(loc, "state=s-9") {
+			t.Fatalf("state not echoed: %q", loc)
+		}
+	})
+}

internal/oidc/mfa_gate.go

@@ -0,0 +1,192 @@
+// Copyright 2026 Hanzo AI, Inc. All rights reserved.
+
+package oidc
+
+import (
+	"context"
+	"strings"
+	"time"
+
+	"github.com/hanzoai/orm"
+	"github.com/zap-proto/zip"
+
+	"github.com/hanzoai/iam/internal/httpx"
+	"github.com/hanzoai/iam/internal/mfa/factor"
+	"github.com/hanzoai/iam/internal/schema"
+	"github.com/hanzoai/iam/internal/store"
+)
+
+// The login-time second-factor gate. A verified password proves ONE factor;
+// everything here decides whether a SECOND is owed before any token or device
+// approval is minted. It is the counterpart to the enrollment surface in
+// internal/mfa — enrollment decides what factors a user HAS, this decides when the
+// sign-in must present one.
+//
+// The two answers are v1's wire STRINGS (object/factor.go:50-54): the client
+// string-compares `data` against them, so they are wire format, not internal
+// names. Any other shape and the client reads the answer as an authorization code
+// and the factor is skipped.
+const (
+	// RequiredMfa — the organization requires a factor this user has not enrolled;
+	// the client must divert to enrollment.
+	RequiredMfa = "RequiredMfa"
+	// NextMfa — the user has factors; data2 carries the allowed ones and the client
+	// must post one back. NO code is minted with this answer.
+	NextMfa = "NextMfa"
+)
+
+// gate is the second-factor decision — the ONE place a sign-in is held. It answers
+// the request itself and reports true when it did; a false means this principal has
+// proven everything it owes and the caller may mint.
+//
+// Every path that signs a user in calls this BEFORE minting a token or approving a
+// device — one function, every call site, because a gate that exists in one branch
+// is not a gate.
+//
+// verificationType names the factor the caller already proved, so the challenge
+// never offers it back. "" excludes nothing (a password proves none of the
+// offerable factors).
+func gate(c *zip.Ctx, db orm.DB, user *schema.User, org *schema.Organization, verificationType string) (bool, error) {
+	ctx := c.Context()
+
+	// The organization REQUIRES a factor this user has not enrolled: the answer is
+	// enrollment, not a challenge it could never answer.
+	if factor.Prompt(org, user) {
+		return true, httpx.Ok(c, RequiredMfa)
+	}
+	if !factor.Enabled(user) {
+		return false, nil
+	}
+
+	// "Remember this device" — a deadline in the FUTURE skips the factor. Written by
+	// remember() with the same RFC3339 the parse below expects; a value the parser
+	// cannot read is treated as no deadline, so a bad value re-challenges rather than
+	// silently granting a permanent skip.
+	if remembered(user, nowFunc()) {
+		return false, nil
+	}
+
+	allow := allowList(user, org, verificationType)
+	if len(allow) == 0 {
+		// Every factor is either the one just used or not actually enrolled: there is
+		// nothing left to ask for.
+		return false, nil
+	}
+
+	id, err := MintChallenge(ctx, db, KindMfa, user.Owner+"/"+user.Name, verificationType, nowFunc())
+	if err != nil {
+		return true, err
+	}
+	SetChallenge(c, id)
+	// data is the STRING "NextMfa"; data2 carries the factors. No code is minted
+	// here — that is the whole point of the gate.
+	return true, httpx.Ok(c, NextMfa, allow)
+}
+
+// allowList is the factors a challenge may be answered with: enrolled, and not the
+// one the caller just used. Each carries the org's remember window so the client
+// can offer "don't ask again".
+func allowList(user *schema.User, org *schema.Organization, verificationType string) []*schema.MfaProps {
+	hours := 0
+	if org != nil {
+		hours = org.MfaRememberInHours
+	}
+	allow := []*schema.MfaProps{}
+	for _, p := range factor.AllProps(user) {
+		if !p.Enabled || p.MfaType == verificationType {
+			continue
+		}
+		p.MfaRememberInHours = hours
+		allow = append(allow, p)
+	}
+	return allow
+}
+
+// remembered reports whether the user's "don't ask again" window is still open. An
+// unparsable or empty deadline is not a skip: this fails CLOSED, to the challenge.
+func remembered(user *schema.User, now time.Time) bool {
+	if user.MfaRememberDeadline == "" {
+		return false
+	}
+	deadline, err := time.Parse(time.RFC3339, user.MfaRememberDeadline)
+	return err == nil && deadline.After(now)
+}
+
+// finishMfa answers an outstanding challenge. The user is loaded from the
+// CHALLENGE's subject — never from the request — so a body naming another account
+// cannot redirect the ceremony. Taking the challenge spends it, so a passcode
+// replayed against the same id loses. On success it completes the ORIGINAL sign-in
+// through the same loginGrant every other path uses, so a second factor over a
+// device approval reaches approveDevice, not a token.
+func finishMfa(c *zip.Ctx, db orm.DB, id string, f loginForm) error {
+	ctx := c.Context()
+	ch, err := TakeChallenge(ctx, db, id, KindMfa, nowFunc())
+	if err != nil {
+		return httpx.Err(c, err.Error())
+	}
+	ClearChallenge(c)
+
+	owner, name, _ := strings.Cut(ch.Subject, "/")
+	user, err := store.GetUserByName(ctx, db, owner, name)
+	if err != nil {
+		return httpx.Err(c, err.Error())
+	}
+	if user == nil {
+		return httpx.Err(c, ErrChallenge.Error())
+	}
+
+	switch {
+	case f.Passcode != "":
+		// The challenge's payload is the factor already used to get here. Answering
+		// with that same factor proves nothing new.
+		if f.MfaType == "" || f.MfaType == ch.Payload {
+			return httpx.Err(c, "invalid multi-factor authentication type")
+		}
+		if f.MfaType != factor.App {
+			// Only TOTP has a verifier here. Refuse anything else rather than wave it
+			// through: a factor with no verification is not a factor.
+			return httpx.Err(c, "invalid multi-factor authentication type")
+		}
+		if !factor.Verify(user.TotpSecret, f.Passcode) {
+			return httpx.Err(c, "the multi-factor authentication code is incorrect")
+		}
+	case f.RecoveryCode != "":
+		// A recovery code is one-time: the hit is removed and the row written whether
+		// or not the rest of the sign-in succeeds, so a code cannot be spent twice.
+		if !factor.UseRecovery(user, f.RecoveryCode) {
+			return httpx.Err(c, "the recovery code is incorrect")
+		}
+		if err := factor.Save(ctx, db, user); err != nil {
+			return httpx.Err(c, err.Error())
+		}
+	default:
+		return httpx.Err(c, "missing passcode or recovery code")
+	}
+
+	if f.EnableMfaRemember {
+		if err := remember(ctx, db, user); err != nil {
+			return httpx.Err(c, err.Error())
+		}
+	}
+	return loginGrant(c, db, user, f)
+}
+
+// remember opens the "don't ask again" window: now + the ORG's MfaRememberInHours.
+// A zero window — every live organization today — yields a deadline already in the
+// past, so the gate keeps challenging. That is the shipped behavior and it is
+// preserved: turning a zero into "forever" would silently disable the factor for
+// every tenant.
+func remember(ctx context.Context, db orm.DB, user *schema.User) error {
+	org, err := store.GetOrganizationByName(ctx, db, user.Owner)
+	if err != nil {
+		return err
+	}
+	hours := 0
+	if org != nil {
+		hours = org.MfaRememberInHours
+	}
+	// Written with the SAME format `remembered` parses — a mismatch here is a
+	// permanent skip or a permanent challenge, silently.
+	user.MfaRememberDeadline = nowFunc().UTC().Add(time.Duration(hours) * time.Hour).Format(time.RFC3339)
+	return factor.Save(ctx, db, user)
+}

internal/oidc/mint.go

@@ -0,0 +1,100 @@
+// Copyright 2026 Hanzo AI, Inc. All rights reserved.
+
+package oidc
+
+import (
+	"context"
+	"errors"
+	"strings"
+
+	"github.com/hanzoai/orm"
+
+	"github.com/hanzoai/iam/internal/schema"
+	"github.com/hanzoai/iam/internal/store"
+)
+
+// The shared tail of every interactive authentication: given a user who has
+// ALREADY proven who they are — by password, by wallet signature, by any future
+// factor — decide what the SDK reads back. One place, so a new front door
+// inherits the redirect/PKCE/tenant rules instead of restating them.
+
+// Mint is the authorize passthrough an interactive login carries. Type selects
+// the shape: "code" mints a PKCE-bound authorization code for the OAuth flow,
+// anything else is a bare portal sign-in.
+type Mint struct {
+	Type                string
+	RedirectUri         string
+	State               string
+	Scope               string
+	Nonce               string
+	CodeChallenge       string
+	CodeChallengeMethod string
+	Resource            string
+}
+
+// MintFor resolves what a successful authentication returns to the SDK: the
+// user id for a bare portal sign-in, or a fresh PKCE-bound authorization code
+// (persisted) for the OAuth flow. userID is "<org>/<name>" — the caller's own
+// verified identity, never a client-supplied value.
+//
+// This is the ONE mint path. Every rule below is a security invariant, so it
+// lives here rather than in each front door:
+//   - Tenant isolation: the user's org must be permitted for this application —
+//     its own org, a shared app, or an app that lets users choose their org.
+//     Without it a user in one tenant could obtain a token naming another.
+//   - Redirect binding: an exactly-registered redirect_uri (RFC 6749 §3.1.2.3);
+//     the token endpoint re-checks it. A supplied-but-unregistered URI is never
+//     minted against.
+//   - PKCE: S256 only (never "plain"), and a public client must present a
+//     challenge — no downgrade.
+func MintFor(ctx context.Context, db orm.DB, app *schema.Application, userID string, p Mint) (string, error) {
+	// A bare sign-in needs no application: report the identity and stop.
+	if p.Type != "code" {
+		return userID, nil
+	}
+	if app == nil {
+		return "", errors.New("the application does not exist")
+	}
+	// The user's org is the owner half of its own id, set server-side at
+	// authentication — never read from the request.
+	org, _, _ := strings.Cut(userID, "/")
+	if org != app.Organization && !app.IsShared && app.OrgChoiceMode == "" {
+		return "", errors.New("the user is not permitted to sign in to this application")
+	}
+	if p.RedirectUri != "" && !app.IsRedirectUriValid(p.RedirectUri) {
+		return "", errors.New("invalid redirect_uri")
+	}
+	method := normalizeChallengeMethod(p.CodeChallenge, p.CodeChallengeMethod)
+	if p.CodeChallenge != "" && method != "S256" {
+		return "", errors.New("only S256 PKCE is supported")
+	}
+	if app.ClientSecret == "" && p.CodeChallenge == "" {
+		return "", errors.New("PKCE is required for public clients")
+	}
+	code, err := MintCode(app, userID, p.Scope, p.CodeChallenge, method, p.Resource, nowFunc())
+	if err != nil {
+		return "", err
+	}
+	// Bind the redirect_uri and nonce onto the code so the token exchange can
+	// re-verify the redirect and echo the nonce into the id_token.
+	code.RedirectUri = p.RedirectUri
+	code.Nonce = p.Nonce
+	if err := store.PersistToken(ctx, db, code); err != nil {
+		return "", err
+	}
+	return code.Code, nil
+}
+
+// ResolveApp resolves the OAuth application a front door names: by clientId when
+// present, else by name under the "admin" registry owner. Returns (nil, nil)
+// when the request names no application. Shared by every interactive login so
+// they all resolve the same app from the same fields.
+func ResolveApp(ctx context.Context, db orm.DB, clientId, name string) (*schema.Application, error) {
+	if clientId != "" {
+		return store.GetApplicationByClientId(ctx, db, clientId)
+	}
+	if name != "" {
+		return store.GetApplicationByName(ctx, db, "admin", name)
+	}
+	return nil, nil
+}

internal/oidc/mldsa.go

@@ -0,0 +1,150 @@
+// Copyright 2026 Hanzo AI, Inc. All rights reserved.
+
+package oidc
+
+import (
+	"encoding/base64"
+	"encoding/pem"
+	"errors"
+	"strings"
+
+	"github.com/golang-jwt/jwt/v5"
+	"github.com/luxfi/crypto/pq/mldsa/mldsa65"
+
+	"github.com/hanzoai/iam/internal/schema"
+)
+
+// ML-DSA-65 (FIPS 204, NIST security level 3) as a first-class JWT signing
+// method. This is the post-quantum half of the hybrid signing story: RS256
+// (jwt.go) is the classical interop path every existing verifier already reads
+// from the JWKS, and MLDSA65 is the forward path, active only for a Cert whose
+// CryptoAlgorithm is ML-DSA. The two share the same Signer / JWKS seam, so a
+// deployment migrates one Cert at a time without touching the token core.
+//
+// The signature scheme is pure ML-DSA-65 over the JWS signing input (no context,
+// deterministic), which is exactly what the ML-DSA-65 Verify checks — so a token
+// this method signs round-trips through the same package's verify path, and a
+// PQ-aware relying party reads the raw public key published in the JWKS.
+
+// algMLDSA65 is the JOSE `alg` value for ML-DSA-65 — the identifier carried in
+// the JWT header and advertised in discovery + JWKS.
+const algMLDSA65 = "MLDSA65"
+
+// signingMethodMLDSA65 implements jwt.SigningMethod for ML-DSA-65.
+type signingMethodMLDSA65 struct{}
+
+// SigningMethodMLDSA65 is the shared, stateless ML-DSA-65 signing method.
+var SigningMethodMLDSA65 jwt.SigningMethod = signingMethodMLDSA65{}
+
+func init() {
+	jwt.RegisterSigningMethod(algMLDSA65, func() jwt.SigningMethod { return SigningMethodMLDSA65 })
+}
+
+// Alg returns the JOSE algorithm identifier.
+func (signingMethodMLDSA65) Alg() string { return algMLDSA65 }
+
+// Sign produces a deterministic ML-DSA-65 signature over the JWS signing input.
+func (signingMethodMLDSA65) Sign(signingString string, key any) ([]byte, error) {
+	sk, ok := key.(*mldsa65.PrivateKey)
+	if !ok {
+		return nil, jwt.ErrInvalidKeyType
+	}
+	sig, err := mldsa65.Sign(sk, []byte(signingString), nil, false)
+	if err != nil {
+		return nil, err
+	}
+	return sig, nil
+}
+
+// Verify checks an ML-DSA-65 signature; a mismatch is a signature error, never a
+// key/type panic.
+func (signingMethodMLDSA65) Verify(signingString string, sig []byte, key any) error {
+	pk, ok := key.(*mldsa65.PublicKey)
+	if !ok {
+		return jwt.ErrInvalidKeyType
+	}
+	if len(sig) != mldsa65.SignatureSize {
+		return jwt.ErrSignatureInvalid
+	}
+	if !mldsa65.Verify(pk, []byte(signingString), nil, sig) {
+		return jwt.ErrSignatureInvalid
+	}
+	return nil
+}
+
+// isMLDSACert reports whether a Cert is an ML-DSA-65 signing cert.
+func isMLDSACert(cert *schema.Cert) bool {
+	if cert == nil {
+		return false
+	}
+	a := strings.ToUpper(strings.ReplaceAll(cert.CryptoAlgorithm, "-", ""))
+	return a == "MLDSA65"
+}
+
+// parseMLDSA65PrivateKey decodes an ML-DSA-65 private key from a Cert's stored
+// material: a PEM envelope ("MLDSA65 PRIVATE KEY") or bare base64 of the packed
+// key bytes.
+func parseMLDSA65PrivateKey(material string) (*mldsa65.PrivateKey, error) {
+	raw, err := decodeKeyMaterial(material)
+	if err != nil {
+		return nil, err
+	}
+	sk := new(mldsa65.PrivateKey)
+	if err := sk.UnmarshalBinary(raw); err != nil {
+		return nil, err
+	}
+	return sk, nil
+}
+
+// parseMLDSA65PublicKey decodes an ML-DSA-65 public key from stored material.
+func parseMLDSA65PublicKey(material string) (*mldsa65.PublicKey, error) {
+	raw, err := decodeKeyMaterial(material)
+	if err != nil {
+		return nil, err
+	}
+	pk := new(mldsa65.PublicKey)
+	if err := pk.UnmarshalBinary(raw); err != nil {
+		return nil, err
+	}
+	return pk, nil
+}
+
+// mldsa65PublicFromCert returns the ML-DSA-65 public key for a cert, from its
+// published Certificate material when present, else derived from the private key
+// (dev certs that store only the key). It never returns private material.
+func mldsa65PublicFromCert(cert *schema.Cert) (*mldsa65.PublicKey, error) {
+	if cert.Certificate != "" {
+		if pk, err := parseMLDSA65PublicKey(cert.Certificate); err == nil {
+			return pk, nil
+		}
+	}
+	sk, err := parseMLDSA65PrivateKey(cert.PrivateKey)
+	if err != nil {
+		return nil, err
+	}
+	pub, ok := sk.Public().(*mldsa65.PublicKey)
+	if !ok {
+		return nil, errors.New("mldsa: derived public key has the wrong type")
+	}
+	return pub, nil
+}
+
+// decodeKeyMaterial extracts raw key bytes from a PEM envelope or bare base64
+// (standard or url encoding), the two shapes a Cert row stores raw keys in.
+func decodeKeyMaterial(material string) ([]byte, error) {
+	material = strings.TrimSpace(material)
+	if material == "" {
+		return nil, errors.New("mldsa: empty key material")
+	}
+	if block, _ := pem.Decode([]byte(material)); block != nil {
+		return block.Bytes, nil
+	}
+	if raw, err := base64.StdEncoding.DecodeString(material); err == nil {
+		return raw, nil
+	}
+	raw, err := base64.RawURLEncoding.DecodeString(material)
+	if err != nil {
+		return nil, errors.New("mldsa: key material is neither PEM nor base64")
+	}
+	return raw, nil
+}

internal/oidc/oidc.go

@@ -0,0 +1,133 @@
+// Copyright 2026 Hanzo AI, Inc. All rights reserved.
+
+// Package oidc serves the IAM v2 OpenID Connect / OAuth2 surface on zip. The
+// handlers are RAW zip handlers (func(c *zip.Ctx) error), not typed generics,
+// because the auth surface needs query params, form bodies, redirects, and
+// headers a JSON-in/JSON-out handler can't reach.
+//
+// The surface is the canonical hanzo.id contract, unchanged across the v1→v2
+// backend swap: discovery + JWKS under .well-known, the oauth/{authorize,token,
+// userinfo,logout} endpoints, and the front-door {get-app-login, auth/methods,
+// login} the hosted UI calls. Tokens are signed JWTs (RS256 interop, ES/ML-DSA
+// behind the same JWKS); every value is verified, never trusted.
+package oidc
+
+import (
+	"github.com/hanzoai/orm"
+	"github.com/zap-proto/zip"
+)
+
+// Canonical OIDC paths — the single source of truth the @hanzo/iam SDK and every
+// existing relying party hard-code. iam2 serves them directly; the transition
+// off v1 is a backend swap behind the same paths, never a parallel version.
+const (
+	PathAuthorize    = "/v1/iam/oauth/authorize"
+	PathToken        = "/v1/iam/oauth/token"
+	PathUserInfo     = "/v1/iam/oauth/userinfo"
+	PathLogout       = "/v1/iam/oauth/logout"
+	PathJWKS         = "/v1/iam/.well-known/jwks"
+	PathJWKSRoot     = "/.well-known/jwks"
+	PathDiscovery    = "/.well-known/openid-configuration"
+	PathDiscoveryV1  = "/v1/iam/.well-known/openid-configuration"
+	PathASMetadata   = "/.well-known/oauth-authorization-server"        // RFC 8414 (root)
+	PathASMetadataV1 = "/v1/iam/.well-known/oauth-authorization-server" // RFC 8414 (v1)
+	PathDevice       = "/v1/iam/oauth/device"                           // RFC 8628 device authorization
+	// PathDeviceVerify is the user-facing device-approval PAGE (a route in the
+	// hosted SPA), not an API path: RFC 8628's verification_uri is somewhere a
+	// human opens and signs in, which the JSON token API can never be.
+	PathDeviceVerify = "/login/oauth/device"
+)
+
+// Route registers the entire OIDC/OAuth2 surface on r, backed by db. This is the
+// one entry point the route table calls — discovery, JWKS, the protocol
+// endpoints, and the front door are all wired here so the surface lives in one
+// place. r is the PUBLIC group (registered before the router's authentication
+// Guard): the whole OIDC/OAuth + front-door surface is pre-authentication by
+// construction, so membership in this group IS what makes it reachable without a
+// bearer — there is no separate allow-list to keep in sync.
+func Route(r zip.Router, db orm.DB) {
+	// Discovery and the JWKS are each served at BOTH the root well-known path
+	// (RFC 8414 §3, where a bare-origin client and the gateway's default look)
+	// and the /v1/iam-prefixed path, matching the live hanzo.id surface. Both
+	// paths are the same handler over the same keys — one key set, two spellings
+	// of where to find it.
+	jwks := jwksHandler(db)
+	r.Get(PathDiscovery, Discovery)
+	r.Get(PathDiscoveryV1, Discovery)
+	// RFC 8414 OAuth Authorization Server Metadata — the same self-consistent
+	// document at the OAuth well-known path (a superset serves it), so an OAuth-only
+	// client that looks for `oauth-authorization-server` finds the AS too.
+	r.Get(PathASMetadata, Discovery)
+	r.Get(PathASMetadataV1, Discovery)
+	r.Get(PathJWKS, jwks)
+	r.Get(PathJWKSRoot, jwks)
+
+	// OAuth2 / OIDC protocol endpoints.
+	r.Get(PathAuthorize, authorizeHandler(db))
+	r.Post(PathAuthorize, authorizeHandler(db))
+	r.Get(PathUserInfo, userinfoHandler(db))
+	r.Post(PathUserInfo, userinfoHandler(db))
+	r.Get(PathLogout, logoutHandler(db))
+	r.Post(PathLogout, logoutHandler(db))
+
+	// The token endpoint, the credential login that mints codes, and the
+	// read-only front door the hosted <Login> self-configures from.
+	routeToken(r, db)
+	routeLogin(r, db)
+	routeFrontDoor(r, db)
+
+	// Identity federation: the external-IdP callback (Google/GitHub, …). The
+	// authorize endpoint kicks a federation off when the request names a
+	// `provider`; this registers the fixed return endpoint the IdP redirects to.
+	routeFederation(r, db)
+	routeFederationMfa(r, db)
+	routeUnlink(r, db)
+
+	// RFC 7662 introspection + RFC 7009 revocation — the standard token-management
+	// endpoints a resource server / confidential client uses (client-authenticated).
+	routeIntrospectRevoke(r, db)
+
+	// RFC 8628 device authorization grant — the browserless CLI sign-in. The
+	// request endpoint is registered here; the poll rides the token endpoint and
+	// the approval rides the login endpoint, both already public above.
+	routeDevice(r, db)
+
+	// The confidential-client "act on behalf of a user" primitive (the console +
+	// keyless-AI proxies mint their forwarded bearer here). Authenticates the
+	// client itself, so it is not Bearer-gated.
+	routeIssueToken(r, db)
+}
+
+// Discovery serves the OIDC discovery document, host-relative (issuer derived
+// from the request host, the same value the tokens carry as `iss`) so a strict
+// client never splits origin. It advertises only what iam2 implements: the
+// authorization-code flow, S256 PKCE, the three supported grants, and the
+// signing algorithms whose public keys the JWKS actually publishes.
+func Discovery(c *zip.Ctx) error {
+	iss := tokenIssuer(c)
+	return c.JSON(200, map[string]any{
+		"issuer":                                iss,
+		"authorization_endpoint":                iss + PathAuthorize,
+		"token_endpoint":                        iss + PathToken,
+		"userinfo_endpoint":                     iss + PathUserInfo,
+		"introspection_endpoint":                iss + PathIntrospect,
+		"revocation_endpoint":                   iss + PathRevoke,
+		"end_session_endpoint":                  iss + PathLogout,
+		"device_authorization_endpoint":         iss + PathDevice,
+		"jwks_uri":                              iss + PathJWKS,
+		"response_types_supported":              []string{"code"},
+		"response_modes_supported":              []string{"query", "fragment", "form_post"},
+		"grant_types_supported":                 []string{"authorization_code", "refresh_token", "client_credentials", "password", grantTypeTokenExchange, deviceGrant},
+		"subject_types_supported":               []string{"public"},
+		"id_token_signing_alg_values_supported": []string{"RS256", "RS512", "ES256", "ES384", "ES512", "MLDSA65"},
+		"scopes_supported":                      []string{"openid", "email", "profile", "address", "phone", "offline_access"},
+		"token_endpoint_auth_methods_supported": []string{"client_secret_basic", "client_secret_post", "none"},
+		"code_challenge_methods_supported":      []string{"S256"},
+		"claims_supported": []string{
+			"iss", "sub", "aud", "iat", "exp", "nbf", "jti", "nonce", "azp",
+			"owner", "organization", "scope", "tokenType",
+			"name", "preferred_username", "email", "email_verified",
+			"picture", "address", "phone", "groups", "is_verified",
+		},
+	})
+}

internal/oidc/onboard.go

@@ -0,0 +1,175 @@
+// Copyright 2026 Hanzo AI, Inc. All rights reserved.
+
+package oidc
+
+import (
+	"strings"
+	"time"
+
+	"github.com/hanzoai/orm"
+	"github.com/zap-proto/zip"
+
+	"github.com/hanzoai/iam/internal/organizations"
+	"github.com/hanzoai/iam/internal/schema"
+	"github.com/hanzoai/iam/internal/store"
+)
+
+// POST /v1/iam/onboard — first-run org onboarding. A signed-in user with no org of
+// their own creates one (named, or a one-click `<username>` personal org) and is
+// MOVED into it as its admin, so everyone always has an org. Because an IAM user's
+// org IS their identity, the move re-keys the caller (their subject becomes
+// slug/name), so the console re-authenticates after a success.
+//
+// The response is the console's own {org}/{error} contract (NOT the casibase
+// envelope): {"org":"<slug>"} on success, an {"error":"..."} with a 4xx/5xx status
+// on failure — the OrgOnboarding client reads json.org / json.error directly.
+//
+// Self-scoped: the caller is resolved from its session/bearer (callerOf), never from
+// the body, so onboarding only ever moves the caller — its own identity, its own org.
+
+// PathOnboard is the canonical first-run onboarding endpoint.
+const PathOnboard = "/v1/iam/onboard"
+
+// Org slug bounds mirror the console's onboarding policy (src/lib/server/onboarding.ts):
+// an IAM org name is varchar(100); keep the slug short + readable.
+const (
+	minOrgSlug = 2
+	maxOrgSlug = 60
+)
+
+// reservedOrgs are the IAM SYSTEM owners a customer org may never become — creating
+// one would collide with a signing-cert owner (admin/built-in) or a system principal
+// (app). Brand/staff orgs (hanzo/lux/zoo/pars in the console list) are NOT hard-coded
+// here (iam2 is white-label): an existing one is refused by the create-conflict check.
+var reservedOrgs = map[string]bool{"admin": true, "built-in": true, "app": true}
+
+// onboardForm is the request body: a name to create, or personal=true for the
+// one-click `<username>` org.
+type onboardForm struct {
+	Name     string `json:"name"`
+	Personal bool   `json:"personal"`
+}
+
+// onboardHandler creates the caller's org and moves them into it as admin.
+func onboardHandler(db orm.DB) zip.Handler {
+	return func(c *zip.Ctx) error {
+		ctx := c.Context()
+
+		owner, name, ok := callerOf(ctx, c, db)
+		if !ok {
+			return onboardErr(c, 401, "please sign in first")
+		}
+
+		var f onboardForm
+		_ = c.Bind(&f)
+
+		slug, display, personal := f.Name, strings.TrimSpace(f.Name), false
+		if f.Personal {
+			slug, display, personal = personalOrgSlug(name), name, true
+		} else {
+			slug = slugifyOrg(f.Name)
+		}
+		if len(slug) < minOrgSlug {
+			return onboardErr(c, 400, "use at least 2 letters or numbers")
+		}
+		if reservedOrgs[slug] {
+			return onboardErr(c, 400, "\""+slug+"\" is reserved. choose a different name")
+		}
+
+		// Load the caller BEFORE creating the org, so a missing user is a clean 4xx
+		// with no orphaned org.
+		user, err := store.GetUserByName(ctx, db, owner, name)
+		if err != nil {
+			return onboardErr(c, 500, "server_error")
+		}
+		if user == nil {
+			return onboardErr(c, 400, "the user does not exist")
+		}
+
+		// The slug must be free (globally: org names are unique). This is also the
+		// guard that refuses an existing brand/staff org by name.
+		existing, err := store.GetOrganizationByName(ctx, db, slug)
+		if err != nil {
+			return onboardErr(c, 500, "server_error")
+		}
+		if existing != nil {
+			return onboardErr(c, 409, "the organization \""+slug+"\" already exists")
+		}
+
+		// Create the tenant org (platform-owned, Owner "admin") through the ONE org
+		// create path.
+		if display == "" {
+			display = slug
+		}
+		if _, err := organizations.NewOrganizationAPI(db).Create(ctx, &organizations.CreateOrganizationInput{
+			Organization: schema.Organization{
+				Owner:       "admin",
+				Name:        slug,
+				DisplayName: display,
+				IsPersonal:  personal,
+				CreatedTime: onboardNow(),
+			},
+		}); err != nil {
+			return onboardErr(c, 400, err.Error())
+		}
+
+		// Move the caller in as admin. Changing Owner re-keys the identity (the row's
+		// surrogate id is stable; user lookups are by (owner, name)), so the loaded
+		// row updates in place and the caller thereafter resolves under the new org.
+		user.Owner = slug
+		user.IsAdmin = true
+		user.UpdatedTime = onboardNow()
+		if err := user.UpdateCtx(ctx); err != nil {
+			return onboardErr(c, 500, err.Error())
+		}
+
+		return c.JSON(200, map[string]string{"org": slug})
+	}
+}
+
+// onboardErr writes the console's {"error":...} shape with an HTTP status the
+// client treats as failure (res.ok=false), never the casibase 200 envelope.
+func onboardErr(c *zip.Ctx, status int, msg string) error {
+	return c.JSON(status, map[string]string{"error": msg})
+}
+
+// onboardNow is the v1-compatible string timestamp for a freshly created/updated row.
+func onboardNow() string { return time.Now().UTC().Format(time.RFC3339) }
+
+// slugifyOrg normalizes a human org name into an IAM slug — lowercase ASCII
+// alphanumerics, every other run collapsed to a single '-', trimmed, capped at
+// maxOrgSlug. Mirrors the console's slugifyOrg for ASCII (the common case); a
+// non-ASCII rune becomes '-' rather than its NFKD base letter (no stdlib NFKD), so
+// an accented name yields a valid but possibly different slug than the client preview
+// — the server slug is authoritative and get-account reports the real org.
+func slugifyOrg(input string) string {
+	var b strings.Builder
+	dash := false
+	for _, r := range strings.ToLower(input) {
+		if (r >= 'a' && r <= 'z') || (r >= '0' && r <= '9') {
+			b.WriteRune(r)
+			dash = false
+			continue
+		}
+		if !dash {
+			b.WriteByte('-')
+			dash = true
+		}
+	}
+	s := strings.Trim(b.String(), "-")
+	if len(s) > maxOrgSlug {
+		s = s[:maxOrgSlug]
+	}
+	return strings.TrimRight(s, "-")
+}
+
+// personalOrgSlug is the default one-click org slug for a user: the local part of an
+// email-like username (dave@x.com → dave), slugified — so a personal org reads as the
+// person, not their address. Mirrors the console's personalOrgSlug.
+func personalOrgSlug(username string) string {
+	base := username
+	if i := strings.IndexByte(username, '@'); i > 0 {
+		base = username[:i]
+	}
+	return slugifyOrg(base)
+}

internal/oidc/password_grant_test.go

@@ -0,0 +1,99 @@
+// Copyright 2026 Hanzo AI, Inc. All rights reserved.
+
+package oidc
+
+import (
+	"context"
+	"net/url"
+	"testing"
+)
+
+// The Resource Owner Password Credentials grant (RFC 6749 §4.3) — the durable
+// first-party console session. Verifies the happy path mints a real, verifiable
+// token carrying the user's identity, and that every rejection (bad password,
+// public client, password-disabled app) fails closed. The password is checked
+// through the SAME algorithm-aware path the login form uses.
+
+func TestPasswordGrant_mintsTokenForValidCredentials(t *testing.T) {
+	app, db := newServer(t)
+	seedApp(t, db, appOpts{clientID: "hanzo-console", secret: "top-secret"})
+	seedUser(t, db, "alice", "alice@hanzo.ai", "correct horse")
+
+	resp, tok := postToken(t, app, url.Values{
+		"grant_type":    {"password"},
+		"client_id":     {"hanzo-console"},
+		"client_secret": {"top-secret"},
+		"username":      {"alice@hanzo.ai"},
+		"password":      {"correct horse"},
+		"scope":         {"openid profile email offline_access"},
+	})
+	if resp.StatusCode != 200 {
+		t.Fatalf("status = %d, want 200; body=%v", resp.StatusCode, tok)
+	}
+	access, _ := tok["access_token"].(string)
+	if access == "" {
+		t.Fatalf("no access_token; body=%v", tok)
+	}
+	// offline_access → a refresh token; openid → an id_token.
+	if tok["refresh_token"] == nil || tok["refresh_token"] == "" {
+		t.Errorf("offline_access requested but no refresh_token minted")
+	}
+	claims, err := verifyToken(context.Background(), db, access)
+	if err != nil {
+		t.Fatalf("minted token does not verify: %v", err)
+	}
+	if claims.Subject != "hanzo/alice" {
+		t.Errorf("subject = %q, want hanzo/alice", claims.Subject)
+	}
+	if claims.Owner != "hanzo" {
+		t.Errorf("owner = %q, want hanzo", claims.Owner)
+	}
+}
+
+func TestPasswordGrant_wrongPassword_invalidGrant(t *testing.T) {
+	app, db := newServer(t)
+	seedApp(t, db, appOpts{clientID: "hanzo-console", secret: "top-secret"})
+	seedUser(t, db, "alice", "alice@hanzo.ai", "correct horse")
+
+	resp, tok := postToken(t, app, url.Values{
+		"grant_type":    {"password"},
+		"client_id":     {"hanzo-console"},
+		"client_secret": {"top-secret"},
+		"username":      {"alice@hanzo.ai"},
+		"password":      {"WRONG"},
+	})
+	requireError(t, resp, tok, 400, "invalid_grant")
+}
+
+func TestPasswordGrant_unknownUser_invalidGrant_sameAsBadPassword(t *testing.T) {
+	app, db := newServer(t)
+	seedApp(t, db, appOpts{clientID: "hanzo-console", secret: "top-secret"})
+
+	// No user seeded: an unknown user must return the SAME opaque invalid_grant as
+	// a wrong password — no user-enumeration oracle.
+	resp, tok := postToken(t, app, url.Values{
+		"grant_type":    {"password"},
+		"client_id":     {"hanzo-console"},
+		"client_secret": {"top-secret"},
+		"username":      {"ghost@hanzo.ai"},
+		"password":      {"anything"},
+	})
+	requireError(t, resp, tok, 400, "invalid_grant")
+}
+
+func TestPasswordGrant_publicClient_rejected(t *testing.T) {
+	app, db := newServer(t)
+	// A public (no-secret) client can never use the password grant.
+	seedApp(t, db, appOpts{clientID: "pub"})
+	seedUser(t, db, "alice", "alice@hanzo.ai", "correct horse")
+
+	resp, tok := postToken(t, app, url.Values{
+		"grant_type": {"password"},
+		"client_id":  {"pub"},
+		"username":   {"alice@hanzo.ai"},
+		"password":   {"correct horse"},
+	})
+	if resp.StatusCode != 401 {
+		t.Fatalf("public-client password grant status = %d, want 401; body=%v", resp.StatusCode, tok)
+	}
+}

internal/oidc/password_persist_test.go

@@ -0,0 +1,56 @@
+// Copyright 2026 Hanzo AI, Inc. All rights reserved.
+
+package oidc
+
+import (
+	"context"
+	"testing"
+
+	"golang.org/x/crypto/bcrypt"
+
+	"github.com/hanzoai/orm"
+
+	"github.com/hanzoai/iam/internal/schema"
+	"github.com/hanzoai/iam/internal/store"
+	"github.com/hanzoai/iam/internal/users"
+)
+
+// TestPasswordHashPersists is the regression for the json:"-"-drops-from-storage
+// bug: orm serializes an entity to its JSON data column, so a credential field
+// tagged json:"-" was never stored → every retrieved user had an empty hash →
+// login could never succeed. This proves the hash survives a store round-trip
+// and verifies, and that the same holds for AccessSecretHash.
+func TestPasswordHashPersists(t *testing.T) {
+	db := openTestDB(t)
+	ctx := context.Background()
+
+	hash, _ := bcrypt.GenerateFromPassword([]byte("s3cret-pw"), bcrypt.MinCost)
+	u := orm.New[schema.User](db)
+	u.Owner = "hanzo"
+	u.Name = "persisttest"
+	u.Email = "persist@hanzo.ai"
+	u.PasswordHash = string(hash)
+	u.PasswordType = "bcrypt"
+	u.AccessSecretHash = "access-hash-value"
+	if err := u.Create(); err != nil {
+		t.Fatal(err)
+	}
+
+	got, err := store.GetUserByEmail(ctx, db, "hanzo", "persist@hanzo.ai")
+	if err != nil || got == nil {
+		t.Fatalf("lookup: %v", err)
+	}
+	if got.PasswordHash == "" {
+		t.Fatal("PasswordHash did not persist — the json:\"-\" storage bug is back")
+	}
+	if got.AccessSecretHash == "" {
+		t.Fatal("AccessSecretHash did not persist")
+	}
+	// The retrieved hash actually verifies the password.
+	if !users.VerifyPassword(got, "s3cret-pw", "") {
+		t.Fatal("persisted hash does not verify the password")
+	}
+	if users.VerifyPassword(got, "wrong-pw", "") {
+		t.Fatal("wrong password verified — bcrypt broken")
+	}
+}

internal/oidc/pkce.go

@@ -0,0 +1,68 @@
+// Copyright 2026 Hanzo AI, Inc. All rights reserved.
+
+package oidc
+
+import (
+	"crypto/sha256"
+	"crypto/subtle"
+	"encoding/base64"
+	"errors"
+)
+
+// PKCE (RFC 7636) — S256 only. iam2 permanently rejects the "plain" method:
+// a downgrade to plain defeats the point of PKCE (the verifier travels in the
+// clear), so an authorize request that stored a plain challenge, or a token
+// request that presents one, is refused.
+
+var (
+	// ErrPKCEPlainRejected is returned when a challenge method other than S256
+	// is presented. Never accept "plain".
+	ErrPKCEPlainRejected = errors.New("pkce: only S256 is supported (plain is rejected)")
+	// ErrPKCEMismatch is returned when the verifier does not derive the stored
+	// challenge. Constant-time — the error is identical regardless of where the
+	// bytes diverge.
+	ErrPKCEMismatch = errors.New("pkce: code_verifier does not match code_challenge")
+	// ErrPKCEMissing is returned when a challenge was stored but no verifier was
+	// presented (or vice-versa).
+	ErrPKCEMissing = errors.New("pkce: code_verifier required")
+)
+
+// ComputeS256Challenge derives the RFC 7636 S256 challenge from a verifier:
+// BASE64URL-ENCODE(SHA256(ASCII(verifier))), no padding.
+func ComputeS256Challenge(verifier string) string {
+	sum := sha256.Sum256([]byte(verifier))
+	return base64.RawURLEncoding.EncodeToString(sum[:])
+}
+
+// VerifyPKCE checks a code_verifier against a stored (challenge, method).
+//
+//   - A stored challenge with method != "S256" is refused (ErrPKCEPlainRejected)
+//     — including an empty method, which some clients send for plain.
+//   - An empty stored challenge means the authorization code was minted WITHOUT
+//     PKCE; the caller decides whether that path is allowed (public clients must
+//     require it). This function returns nil for (empty, empty) so a caller can
+//     treat "no PKCE on either side" as not-an-error and enforce its own policy.
+//   - A stored challenge with an empty verifier is ErrPKCEMissing.
+//   - Otherwise the verifier is hashed and compared to the challenge in constant
+//     time (subtle.ConstantTimeCompare), so a mismatch leaks no position.
+func VerifyPKCE(verifier, challenge, method string) error {
+	if challenge == "" {
+		if verifier != "" {
+			// A verifier with no stored challenge is a protocol error, but it is
+			// not a match either — treat as missing so the caller fails closed.
+			return ErrPKCEMissing
+		}
+		return nil // no PKCE on either side; caller enforces public-client policy
+	}
+	if method != "S256" {
+		return ErrPKCEPlainRejected
+	}
+	if verifier == "" {
+		return ErrPKCEMissing
+	}
+	want := ComputeS256Challenge(verifier)
+	if subtle.ConstantTimeCompare([]byte(want), []byte(challenge)) != 1 {
+		return ErrPKCEMismatch
+	}
+	return nil
+}

internal/oidc/pkce_test.go

@@ -0,0 +1,66 @@
+// Copyright 2026 Hanzo AI, Inc. All rights reserved.
+
+package oidc
+
+import (
+	"errors"
+	"testing"
+)
+
+func TestComputeS256Challenge_RFC7636Vector(t *testing.T) {
+	// The canonical RFC 7636 Appendix B test vector.
+	verifier := "dBjftJeZ4CVP-mB92K27uhbUJU1p1r_wW1gFWFOEjXk"
+	want := "E9Melhoa2OwvFrEMTJguCHaoeK1t8URWbuGJSstw-cM"
+	if got := ComputeS256Challenge(verifier); got != want {
+		t.Fatalf("S256 challenge = %q, want %q (RFC 7636 vector)", got, want)
+	}
+}
+
+func TestVerifyPKCE_HappyPath(t *testing.T) {
+	verifier := "dBjftJeZ4CVP-mB92K27uhbUJU1p1r_wW1gFWFOEjXk"
+	challenge := ComputeS256Challenge(verifier)
+	if err := VerifyPKCE(verifier, challenge, "S256"); err != nil {
+		t.Fatalf("valid verifier rejected: %v", err)
+	}
+}
+
+func TestVerifyPKCE_WrongVerifierRejected(t *testing.T) {
+	challenge := ComputeS256Challenge("the-real-verifier-value-0000000000000000000")
+	err := VerifyPKCE("a-different-verifier-value-000000000000000000", challenge, "S256")
+	if !errors.Is(err, ErrPKCEMismatch) {
+		t.Fatalf("wrong verifier: got %v, want ErrPKCEMismatch", err)
+	}
+}
+
+func TestVerifyPKCE_PlainRejected(t *testing.T) {
+	// Even if the "plain" value would match, the method must be refused.
+	v := "plain-verifier-equals-challenge-under-plain-000"
+	for _, method := range []string{"plain", "PLAIN", "", "s256", "S384"} {
+		if err := VerifyPKCE(v, v, method); !errors.Is(err, ErrPKCEPlainRejected) {
+			t.Fatalf("method %q: got %v, want ErrPKCEPlainRejected", method, err)
+		}
+	}
+}
+
+func TestVerifyPKCE_MissingVerifier(t *testing.T) {
+	challenge := ComputeS256Challenge("some-verifier-0000000000000000000000000000000")
+	if err := VerifyPKCE("", challenge, "S256"); !errors.Is(err, ErrPKCEMissing) {
+		t.Fatalf("empty verifier with a stored challenge: got %v, want ErrPKCEMissing", err)
+	}
+}
+
+func TestVerifyPKCE_VerifierWithNoChallengeFailsClosed(t *testing.T) {
+	// A verifier presented when the code was minted with no challenge is a
+	// protocol error and must NOT be treated as a match.
+	if err := VerifyPKCE("unexpected-verifier", "", "S256"); !errors.Is(err, ErrPKCEMissing) {
+		t.Fatalf("verifier with empty challenge: got %v, want ErrPKCEMissing", err)
+	}
+}
+
+func TestVerifyPKCE_NoPKCEEitherSide(t *testing.T) {
+	// No challenge and no verifier: not an error here — the caller enforces
+	// whether a public client is allowed to skip PKCE.
+	if err := VerifyPKCE("", "", ""); err != nil {
+		t.Fatalf("no PKCE on either side should be nil, got %v", err)
+	}
+}

internal/oidc/preferences.go

@@ -0,0 +1,100 @@
+// Copyright 2026 Hanzo AI, Inc. All rights reserved.
+
+package oidc
+
+import (
+	"encoding/json"
+	"fmt"
+
+	"github.com/hanzoai/orm"
+	"github.com/zap-proto/zip"
+
+	"github.com/hanzoai/iam/internal/httpx"
+	"github.com/hanzoai/iam/internal/store"
+)
+
+// POST /v1/iam/update-preferences — the ONE account-backed store for cross-product,
+// cross-device user customizations (onboarding-completed flag, theme, pinned
+// favorites, …). The console's PreferencesProvider reads these from the account's
+// Properties["hanzo.preferences"] JSON blob and write-through-persists partial updates
+// here. Ported from the v1 me_preferences.go contract.
+//
+// SELF-SCOPED (never the body): the target user is ALWAYS the caller resolved from its
+// session/bearer (callerOf) — never a name/org in the request — so a caller can only
+// ever write its OWN preferences. MERGE: top-level keys are shallow-merged onto the
+// stored object, so concurrent products/devices setting DIFFERENT keys don't clobber
+// each other; the merged object is returned so the caller keeps every other key.
+
+// PathUpdatePreferences is the canonical self-preferences endpoint.
+const PathUpdatePreferences = "/v1/iam/update-preferences"
+
+// preferencesKey is the User.Properties entry holding the cross-product preferences
+// JSON blob — the backend half of the console contract (PREFS_PROPERTY); keep in
+// lockstep.
+const preferencesKey = "hanzo.preferences"
+
+// preferencesMaxBytes caps the serialized merged blob so a runaway client can't grow
+// the properties column without bound.
+const preferencesMaxBytes = 64 * 1024
+
+// updatePreferencesHandler shallow-merges the posted partial onto the caller's stored
+// preferences and returns the merged object.
+func updatePreferencesHandler(db orm.DB) zip.Handler {
+	return func(c *zip.Ctx) error {
+		ctx := c.Context()
+		owner, name, ok := callerOf(ctx, c, db)
+		if !ok {
+			return httpx.Err(c, "please sign in first")
+		}
+		user, err := store.GetUserByName(ctx, db, owner, name)
+		if err != nil {
+			return httpx.Err(c, "server_error")
+		}
+		if user == nil {
+			return httpx.Err(c, "the user does not exist")
+		}
+
+		mergedJSON, merged, err := mergePreferences(user.Properties[preferencesKey], c.Fiber().Body())
+		if err != nil {
+			return httpx.Err(c, err.Error())
+		}
+		if user.Properties == nil {
+			user.Properties = map[string]string{}
+		}
+		user.Properties[preferencesKey] = mergedJSON
+		user.UpdatedTime = onboardNow()
+		if err := user.UpdateCtx(ctx); err != nil {
+			return httpx.Err(c, err.Error())
+		}
+		return httpx.Ok(c, merged)
+	}
+}
+
+// mergePreferences shallow-merges a JSON `patch` object onto the `existing`
+// preferences JSON string, returning the merged JSON plus the merged map. Pure (no
+// session, no DB): a patch key overwrites ONLY that top-level key (every other stored
+// key survives); an absent/blank/corrupt `existing` is an empty object (a first write
+// still lands and self-heals); a non-object patch is rejected; the blob is size-capped.
+func mergePreferences(existing string, patch []byte) (string, map[string]json.RawMessage, error) {
+	patchMap := map[string]json.RawMessage{}
+	if err := json.Unmarshal(patch, &patchMap); err != nil {
+		return "", nil, fmt.Errorf("preferences must be a JSON object: %w", err)
+	}
+
+	merged := map[string]json.RawMessage{}
+	if existing != "" {
+		_ = json.Unmarshal([]byte(existing), &merged) // corrupt stored blob → treated as empty
+	}
+	for k, v := range patchMap {
+		merged[k] = v
+	}
+
+	out, err := json.Marshal(merged)
+	if err != nil {
+		return "", nil, err
+	}
+	if len(out) > preferencesMaxBytes {
+		return "", nil, fmt.Errorf("preferences exceed maximum size of %d bytes", preferencesMaxBytes)
+	}
+	return string(out), merged, nil
+}

internal/oidc/refresh.go

@@ -0,0 +1,133 @@
+// Copyright 2026 Hanzo AI, Inc. All rights reserved.
+
+package oidc
+
+import (
+	"context"
+	"crypto/subtle"
+	"strings"
+
+	"github.com/hanzoai/orm"
+	"github.com/zap-proto/zip"
+
+	"github.com/hanzoai/iam/internal/schema"
+	"github.com/hanzoai/iam/internal/store"
+)
+
+// Refresh-token rotation with reuse detection. A refresh token is an opaque,
+// single-use bearer (stored only as a SHA-256 hash): every exchange consumes the
+// presented token and mints a successor in the same rotation family. Presenting
+// an already-consumed refresh is a replay — the whole family is revoked so a
+// stolen token cannot outlive its legitimate successor (RFC 9700 §4.14). This is
+// the load-bearing hardening over v1, whose refresh path is rotate-and-delete
+// with no family cascade.
+
+// refreshTokenGrant handles grant_type=refresh_token.
+func refreshTokenGrant(c *zip.Ctx, db orm.DB) error {
+	ctx := c.Context()
+	now := nowFunc()
+
+	presented := param(c, "refresh_token")
+	if presented == "" {
+		return tokenError(c, 400, "invalid_request", "refresh_token is required")
+	}
+	clientID, clientSecret := clientAuth(c)
+
+	tok, err := store.GetTokenByRefreshHash(ctx, db, hashToken(presented))
+	if err != nil {
+		return tokenError(c, 500, "server_error", "")
+	}
+	if tok == nil {
+		return tokenError(c, 400, "invalid_grant", "refresh token is invalid or revoked")
+	}
+	app, err := resolveTokenApp(ctx, db, tok)
+	if err != nil {
+		return tokenError(c, 500, "server_error", "")
+	}
+	if app == nil {
+		return tokenError(c, 400, "invalid_grant", "refresh token is invalid or revoked")
+	}
+
+	// Client authentication: the presented client must be the grant's client, and
+	// a confidential client must present its secret.
+	if clientID != "" && subtle.ConstantTimeCompare([]byte(clientID), []byte(app.ClientId)) != 1 {
+		return tokenError(c, 400, "invalid_grant", "client mismatch")
+	}
+	if app.ClientSecret != "" {
+		if subtle.ConstantTimeCompare([]byte(clientSecret), []byte(app.ClientSecret)) != 1 {
+			return tokenErrorClient(c, "client authentication failed")
+		}
+	}
+
+	// Reuse detection: a consumed token was already rotated. Revoke the whole
+	// family and refuse — a replay means the token leaked.
+	if tok.RefreshConsumed {
+		revokeRefreshFamily(ctx, db, tok.RefreshFamily)
+		return tokenError(c, 400, "invalid_grant", "refresh token replay detected")
+	}
+	if tok.RefreshExpireIn != 0 && now.Unix() > tok.RefreshExpireIn {
+		return tokenError(c, 400, "invalid_grant", "refresh token expired")
+	}
+
+	// Optional scope narrowing — never widening (RFC 6749 §6).
+	scope := tok.Scope
+	if req := param(c, "scope"); req != "" {
+		if !scopeSubset(req, tok.Scope) {
+			return tokenError(c, 400, "invalid_scope", "requested scope exceeds the grant")
+		}
+		scope = req
+	}
+
+	// Rotate: consume the presented token, then mint a successor in the same
+	// family. The successor is a new row so the consumed one remains as a
+	// tripwire for replay until the family is revoked or expires.
+	tok.RefreshConsumed = true
+	if err := store.SaveToken(ctx, db, tok); err != nil {
+		return tokenError(c, 500, "server_error", "")
+	}
+	nameSeed, err := newOpaqueToken()
+	if err != nil {
+		return tokenError(c, 500, "server_error", "")
+	}
+	nu := &schema.Token{
+		Owner:        tok.Owner,
+		Application:  tok.Application,
+		Organization: tok.Organization,
+		User:         tok.User,
+		Scope:        scope,
+		Nonce:        tok.Nonce,
+		Resource:     tok.Resource,
+		RedirectUri:  tok.RedirectUri,
+	}
+	nu.Name = "rt-" + nameSeed[:24]
+	resp, err := issueTokens(ctx, db, c, app, nu, tok.RefreshFamily, now)
+	if err != nil {
+		return tokenError(c, 500, "server_error", "")
+	}
+	if err := store.PersistToken(ctx, db, nu); err != nil {
+		return tokenError(c, 500, "server_error", "")
+	}
+	return c.JSON(200, resp)
+}
+
+// revokeRefreshFamily deletes every token row in a rotation family — the
+// containment response when a rotated refresh token is replayed.
+func revokeRefreshFamily(ctx context.Context, db orm.DB, family string) {
+	rows, err := store.ListTokensByRefreshFamily(ctx, db, family)
+	if err != nil {
+		return
+	}
+	for _, r := range rows {
+		_ = store.DeleteToken(ctx, db, r)
+	}
+}
+
+// scopeSubset reports whether every scope in sub is present in super.
+func scopeSubset(sub, super string) bool {
+	for _, s := range strings.Fields(sub) {
+		if !hasScope(super, s) {
+			return false
+		}
+	}
+	return true
+}

internal/oidc/refresh_test.go

@@ -0,0 +1,123 @@
+// Copyright 2026 Hanzo AI, Inc. All rights reserved.
+
+package oidc
+
+import (
+	"net/url"
+	"testing"
+
+	"github.com/zap-proto/zip"
+)
+
+// grantViaPKCE runs the public authorization-code+PKCE flow and returns the
+// issued token set.
+func grantViaPKCE(t *testing.T, app *zip.App, clientID, scope string) map[string]any {
+	t.Helper()
+	verifier := "verifier-abcdefghijklmnopqrstuvwxyz-0123456789"
+	params := loginParams(clientID, scope)
+	params["codeChallenge"] = ComputeS256Challenge(verifier)
+	params["codeChallengeMethod"] = "S256"
+	code, _, _ := loginForCode(t, app, params)
+	resp, tok := exchangeCode(t, app, url.Values{
+		"code": {code}, "client_id": {clientID}, "redirect_uri": {testRedirect}, "code_verifier": {verifier},
+	})
+	if resp.StatusCode != 200 {
+		t.Fatalf("grant failed: %d %v", resp.StatusCode, tok)
+	}
+	return tok
+}
+
+func refresh(t *testing.T, app *zip.App, clientID, refreshToken string, extra url.Values) (int, map[string]any) {
+	t.Helper()
+	form := url.Values{"grant_type": {"refresh_token"}, "refresh_token": {refreshToken}, "client_id": {clientID}}
+	for k, vs := range extra {
+		form[k] = vs
+	}
+	resp, tok := postToken(t, app, form)
+	return resp.StatusCode, tok
+}
+
+// A refresh rotates: it returns a new access token AND a new refresh token,
+// distinct from the one presented.
+func TestRefresh_Rotates(t *testing.T) {
+	app, db := newServer(t)
+	seedApp(t, db, appOpts{clientID: "pub", redirectURIs: []string{testRedirect}, refreshHours: 24})
+	seedUser(t, db, "alice", "alice@hanzo.ai", "pw")
+
+	tok := grantViaPKCE(t, app, "pub", "openid offline_access")
+	refresh1 := tok["refresh_token"].(string)
+
+	status, out := refresh(t, app, "pub", refresh1, nil)
+	if status != 200 {
+		t.Fatalf("refresh status = %d, body %v", status, out)
+	}
+	refresh2, _ := out["refresh_token"].(string)
+	if refresh2 == "" || refresh2 == refresh1 {
+		t.Fatalf("refresh must rotate the token: got %q (old %q)", refresh2, refresh1)
+	}
+	if out["access_token"] == nil {
+		t.Fatal("refresh must issue a new access token")
+	}
+}
+
+// Replaying a rotated (consumed) refresh token is detected and revokes the whole
+// family — the legitimate successor dies with it.
+func TestRefresh_ReuseDetectionRevokesFamily(t *testing.T) {
+	app, db := newServer(t)
+	seedApp(t, db, appOpts{clientID: "pub", redirectURIs: []string{testRedirect}, refreshHours: 24})
+	seedUser(t, db, "alice", "alice@hanzo.ai", "pw")
+
+	tok := grantViaPKCE(t, app, "pub", "openid offline_access")
+	refresh1 := tok["refresh_token"].(string)
+
+	// Legitimate rotation → refresh2.
+	_, out := refresh(t, app, "pub", refresh1, nil)
+	refresh2 := out["refresh_token"].(string)
+
+	// Replay the consumed refresh1 → reuse detected.
+	status, replay := refresh(t, app, "pub", refresh1, nil)
+	if status != 400 || replay["error"] != "invalid_grant" {
+		t.Fatalf("replay of rotated token: status=%d err=%v, want 400 invalid_grant", status, replay["error"])
+	}
+
+	// The family is revoked: the legitimate successor refresh2 no longer works.
+	status, after := refresh(t, app, "pub", refresh2, nil)
+	if status != 400 || after["error"] != "invalid_grant" {
+		t.Fatalf("successor after reuse: status=%d err=%v, want 400 invalid_grant (family revoked)", status, after["error"])
+	}
+}
+
+// Refresh may narrow scope but never widen it.
+func TestRefresh_ScopeNarrowingOnly(t *testing.T) {
+	app, db := newServer(t)
+	seedApp(t, db, appOpts{clientID: "pub", redirectURIs: []string{testRedirect}, refreshHours: 24})
+	seedUser(t, db, "alice", "alice@hanzo.ai", "pw")
+
+	tok := grantViaPKCE(t, app, "pub", "openid profile email")
+	rt := tok["refresh_token"].(string)
+
+	t.Run("narrow ok", func(t *testing.T) {
+		status, out := refresh(t, app, "pub", rt, url.Values{"scope": {"openid"}})
+		if status != 200 || out["scope"] != "openid" {
+			t.Fatalf("narrowing failed: status=%d scope=%v", status, out["scope"])
+		}
+	})
+
+	t.Run("widen rejected", func(t *testing.T) {
+		tok2 := grantViaPKCE(t, app, "pub", "openid")
+		status, out := refresh(t, app, "pub", tok2["refresh_token"].(string), url.Values{"scope": {"openid profile admin"}})
+		if status != 400 || out["error"] != "invalid_scope" {
+			t.Fatalf("widening should be invalid_scope: status=%d err=%v", status, out["error"])
+		}
+	})
+}
+
+// An unknown refresh token is refused without leaking whether it ever existed.
+func TestRefresh_UnknownToken(t *testing.T) {
+	app, db := newServer(t)
+	seedApp(t, db, appOpts{clientID: "pub", redirectURIs: []string{testRedirect}})
+	status, out := refresh(t, app, "pub", "not-a-real-refresh-token", nil)
+	if status != 400 || out["error"] != "invalid_grant" {
+		t.Fatalf("unknown refresh: status=%d err=%v", status, out["error"])
+	}
+}

internal/oidc/sendverificationcode.go

@@ -0,0 +1,179 @@
+// Copyright 2026 Hanzo AI, Inc. All rights reserved.
+
+package oidc
+
+import (
+	"context"
+	"crypto/rand"
+	"fmt"
+	"math/big"
+	"strings"
+	"time"
+
+	"github.com/hanzoai/orm"
+	"github.com/zap-proto/zip"
+
+	"github.com/hanzoai/iam/internal/cred"
+	"github.com/hanzoai/iam/internal/httpx"
+	"github.com/hanzoai/iam/internal/schema"
+	"github.com/hanzoai/iam/internal/store"
+)
+
+// The native front-door OTP send: POST /v1/iam/send-verification-code. It mirrors
+// the v1 Casdoor SendVerificationCode contract (controllers/verification.go): the
+// request is multipart/form-data (NOT JSON — a HIP-0111 §4 invariant), and the
+// response is the casibase {status,msg,data} envelope with an empty data on
+// success.
+//
+// This endpoint owns the code-generation + persistence + validation surface. The
+// actual email/SMS DELIVERY is a separate concern owned by hanzoai/notify (v1
+// calls object.SendVerificationCodeToEmail/…Phone, which forwards to notify over
+// ZAP). notify is not wired into iam2 yet, so this endpoint persists a verifiable
+// code and returns {status:"ok"} honestly — it does NOT fabricate a "sent" claim.
+// Delivery plugs in at the marked seam below with no shape change.
+
+// PathSendVerificationCode is the canonical front-door OTP-send endpoint.
+const PathSendVerificationCode = "/v1/iam/send-verification-code"
+
+// verificationCodeLength is the OTP digit count (v1 getRandomCode(6)).
+const verificationCodeLength = 6
+
+// verificationCodeTTL bounds how long a sent code stays redeemable (v1's
+// verificationCodeTimeout default, 10 minutes).
+const verificationCodeTTL = 10 * time.Minute
+
+// sendVerificationCode validates the request, mints + persists an OTP, and
+// reports success. The request fields are read via fiber's FormValue — the
+// escape hatch zip exposes for form bodies (multipart or urlencoded) — since the
+// typed JSON Bind does not apply here. v1 also accepts countryCode/method/
+// checkUser/captchaType; iam2 ignores them (the captcha/forget/MFA flows those
+// drive are not ported), and CAPTCHA verification is likewise not enforced —
+// iam2 models no captcha provider — so the code is issued once the destination
+// and application validate.
+func sendVerificationCode(db orm.DB) zip.Handler {
+	return func(c *zip.Ctx) error {
+		ctx := c.Context()
+		fc := c.Fiber()
+		dest := fc.FormValue("dest")
+		typ := fc.FormValue("type")
+		applicationId := fc.FormValue("applicationId")
+
+		// v1 form.VerificationForm.CheckParameter(SendVerifyCode): type + dest
+		// required, applicationId must be an owner/name id.
+		if typ == "" {
+			return httpx.Err(c, "missing parameter: type")
+		}
+		if dest == "" {
+			return httpx.Err(c, "missing parameter: dest")
+		}
+		if !strings.Contains(applicationId, "/") {
+			return httpx.Err(c, "wrong parameter: applicationId")
+		}
+
+		owner, name := splitSub(applicationId)
+		app, err := store.GetApplicationByName(ctx, db, owner, name)
+		if err != nil {
+			return httpx.Err(c, err.Error())
+		}
+		if app == nil {
+			return httpx.Err(c, "the application: "+applicationId+" does not exist")
+		}
+
+		org, err := store.GetOrganizationByName(ctx, db, app.Organization)
+		if err != nil {
+			return httpx.Err(c, err.Error())
+		}
+		if org == nil {
+			return httpx.Err(c, "the organization does not exist")
+		}
+
+		// Validate the destination by type and, for email, resolve the target user
+		// (metadata on the record). Phone user-resolution + E.164 normalization need
+		// a phone library iam2 does not carry yet — the record still persists.
+		var user *schema.User
+		switch typ {
+		case "email":
+			if !isEmailValid(dest) {
+				return httpx.Err(c, "email is invalid")
+			}
+			if user, err = store.GetUserByEmail(ctx, db, org.Name, dest); err != nil {
+				return httpx.Err(c, err.Error())
+			}
+		case "phone":
+			// dest is required (checked above); accepted as-is.
+		default:
+			return httpx.Err(c, "unsupported verification type: "+typ)
+		}
+
+		code, err := generateCode(verificationCodeLength)
+		if err != nil {
+			return httpx.Err(c, "failed to generate verification code")
+		}
+		id, err := newOpaqueToken()
+		if err != nil {
+			return httpx.Err(c, "failed to generate verification record id")
+		}
+		rec := &schema.VerificationRecord{
+			Owner:       org.Name,
+			Name:        id,
+			CreatedTime: nowFunc().UTC().Format(time.RFC3339),
+			RemoteAddr:  fc.IP(),
+			Type:        typ,
+			Receiver:    dest,
+			Code:        code,
+			Provider:    "demo",
+			Time:        nowFunc().Unix(),
+			IsUsed:      false,
+		}
+		if user != nil {
+			rec.User = user.Owner + "/" + user.Name
+		}
+		if err := store.AddVerificationRecord(ctx, db, rec); err != nil {
+			return httpx.Err(c, err.Error())
+		}
+
+		// --- DELIVERY SEAM ---------------------------------------------------
+		// v1 hands (org, user, dest, code) to hanzoai/notify here
+		// (object.SendVerificationCodeToEmail / …ToPhone). notify owns the
+		// per-tenant SendGrid/SMTP/Resend/Twilio provider + template. It is not
+		// wired into iam2 yet; when it is, the send call slots in exactly here and
+		// the persisted record above stays the source of truth for verification.
+		// ---------------------------------------------------------------------
+
+		return httpx.Ok(c, nil)
+	}
+}
+
+// generateCode returns an n-digit numeric OTP drawn from crypto/rand, uniformly
+// (no modulo bias) and zero-padded to a fixed width.
+func generateCode(n int) (string, error) {
+	max := new(big.Int).Exp(big.NewInt(10), big.NewInt(int64(n)), nil)
+	k, err := rand.Int(rand.Reader, max)
+	if err != nil {
+		return "", err
+	}
+	return fmt.Sprintf("%0*d", n, k), nil
+}
+
+// CheckVerificationCode reports whether code matches the latest unused,
+// unexpired verification record sent to receiver — the check side of the OTP
+// surface, which the signup email/phone gate calls ahead of account creation at
+// cutover. The compare is constant-time; an expired or absent record fails
+// closed. It does NOT consume the record (the caller marks it used on the flow
+// it gates).
+func CheckVerificationCode(ctx context.Context, db orm.DB, receiver, code string) (bool, error) {
+	if receiver == "" || code == "" {
+		return false, nil
+	}
+	rec, err := store.GetLatestVerificationRecord(ctx, db, receiver)
+	if err != nil {
+		return false, err
+	}
+	if rec == nil {
+		return false, nil
+	}
+	if nowFunc().Unix()-rec.Time > int64(verificationCodeTTL/time.Second) {
+		return false, nil
+	}
+	return cred.ConstantTimeEqual(rec.Code, code), nil
+}

internal/oidc/sendverificationcode_test.go

@@ -0,0 +1,133 @@
+// Copyright 2026 Hanzo AI, Inc. All rights reserved.
+
+package oidc
+
+import (
+	"bytes"
+	"context"
+	"mime/multipart"
+	"net/http"
+	"net/http/httptest"
+	"net/url"
+	"testing"
+
+	"github.com/zap-proto/zip"
+
+	"github.com/hanzoai/iam/internal/store"
+)
+
+// multipartReq builds a real multipart/form-data POST — the wire format v1's
+// SendVerificationCode requires (NOT JSON), so the test exercises the multipart
+// parse path, not a urlencoded shortcut.
+func multipartReq(path string, fields map[string]string) *http.Request {
+	var body bytes.Buffer
+	w := multipart.NewWriter(&body)
+	for k, v := range fields {
+		_ = w.WriteField(k, v)
+	}
+	_ = w.Close()
+	req := httptest.NewRequest("POST", path, &body)
+	req.Header.Set("Content-Type", w.FormDataContentType()) // multipart/form-data; boundary=…
+	req.Host = "hanzo.id"
+	return req
+}
+
+func sendCode(t *testing.T, app *zip.App, fields map[string]string) (int, map[string]any) {
+	t.Helper()
+	resp, raw := do(t, app, multipartReq(PathSendVerificationCode, fields))
+	return resp.StatusCode, decode(t, raw)
+}
+
+// The happy path parses the multipart form, persists a 6-digit unused code
+// bound to the receiver, and reports ok — and that code then verifies through
+// CheckVerificationCode while a wrong one fails closed.
+func TestSendVerificationCode_PersistsAndVerifies(t *testing.T) {
+	app, db := newServer(t)
+	seedApp(t, db, appOpts{clientID: "conf", secret: "s3cret"})
+	seedOrg(t, db, "hanzo")
+	seedRichUser(t, db) // alice@hanzo.ai — exercises the user-resolution branch
+
+	status, env := sendCode(t, app, map[string]string{
+		"dest":          "alice@hanzo.ai",
+		"type":          "email",
+		"applicationId": "admin/conf",
+		"captchaType":   "none",
+	})
+	if status != 200 || env["status"] != "ok" {
+		t.Fatalf("status=%d env=%v, want 200 ok", status, env)
+	}
+
+	ctx := context.Background()
+	rec, err := store.GetLatestVerificationRecord(ctx, db, "alice@hanzo.ai")
+	if err != nil || rec == nil {
+		t.Fatalf("verification record not persisted: %v (nil=%v)", err, rec == nil)
+	}
+	if rec.Type != "email" || rec.IsUsed {
+		t.Errorf("record type/used = %q/%v, want email/false", rec.Type, rec.IsUsed)
+	}
+	if len(rec.Code) != verificationCodeLength {
+		t.Errorf("code = %q, want %d digits", rec.Code, verificationCodeLength)
+	}
+	if rec.User != "hanzo/alice" {
+		t.Errorf("record.User = %q, want hanzo/alice (resolved from the dest)", rec.User)
+	}
+
+	// The validation surface: the persisted code verifies, a wrong one does not.
+	if ok, err := CheckVerificationCode(ctx, db, "alice@hanzo.ai", rec.Code); err != nil || !ok {
+		t.Fatalf("correct code must verify: ok=%v err=%v", ok, err)
+	}
+	if ok, _ := CheckVerificationCode(ctx, db, "alice@hanzo.ai", "000000"); ok {
+		t.Error("a wrong code must not verify")
+	}
+	if ok, _ := CheckVerificationCode(ctx, db, "nobody@hanzo.ai", rec.Code); ok {
+		t.Error("a code must not verify for a different receiver")
+	}
+}
+
+// A urlencoded body reaches the same handler (fiber's FormValue reads both) —
+// the code path is not multipart-only.
+func TestSendVerificationCode_UrlencodedAlsoWorks(t *testing.T) {
+	app, db := newServer(t)
+	seedApp(t, db, appOpts{clientID: "conf", secret: "s3cret"})
+	seedOrg(t, db, "hanzo")
+
+	resp, raw := do(t, app, formReq("POST", PathSendVerificationCode, url.Values{
+		"dest":          {"someone@hanzo.ai"},
+		"type":          {"email"},
+		"applicationId": {"admin/conf"},
+	}))
+	if env := decode(t, raw); resp.StatusCode != 200 || env["status"] != "ok" {
+		t.Fatalf("status=%d env=%v, want 200 ok", resp.StatusCode, env)
+	}
+	if rec, _ := store.GetLatestVerificationRecord(context.Background(), db, "someone@hanzo.ai"); rec == nil {
+		t.Error("urlencoded send did not persist a record")
+	}
+}
+
+// Every malformed request returns {status:"error"} on a 200 and persists nothing.
+func TestSendVerificationCode_Errors(t *testing.T) {
+	base := func() map[string]string {
+		return map[string]string{"dest": "x@hanzo.ai", "type": "email", "applicationId": "admin/conf"}
+	}
+	cases := map[string]func(m map[string]string){
+		"missing type":              func(m map[string]string) { delete(m, "type") },
+		"missing dest":              func(m map[string]string) { delete(m, "dest") },
+		"applicationId without '/'": func(m map[string]string) { m["applicationId"] = "conf" },
+		"application not found":     func(m map[string]string) { m["applicationId"] = "admin/ghost" },
+		"invalid email":             func(m map[string]string) { m["dest"] = "not-an-email" },
+		"unsupported type":          func(m map[string]string) { m["type"] = "carrier-pigeon" },
+	}
+	for name, mutate := range cases {
+		t.Run(name, func(t *testing.T) {
+			app, db := newServer(t)
+			seedApp(t, db, appOpts{clientID: "conf", secret: "s3cret"})
+			seedOrg(t, db, "hanzo")
+			m := base()
+			mutate(m)
+			status, env := sendCode(t, app, m)
+			if status != 200 || env["status"] != "error" {
+				t.Fatalf("status=%d env=%v, want 200 error", status, env)
+			}
+		})
+	}
+}

internal/oidc/session_e2e_test.go

@@ -0,0 +1,83 @@
+// Copyright 2026 Hanzo AI, Inc. All rights reserved.
+package oidc
+
+import (
+	"net/http"
+	"net/url"
+	"strings"
+	"testing"
+)
+
+// The full portal session path: a bare (type=login) sign-in sets the session
+// cookie, and get-account resolves the caller FROM that cookie (no bearer). This
+// is the path the hanzo.id portal + the gateway admin-guard use.
+func TestSession_LoginCookieResolvesGetAccount(t *testing.T) {
+	app, db := newServer(t)
+	seedApp(t, db, appOpts{clientID: "conf", secret: "s3cret", redirectURIs: []string{testRedirect}})
+	seedRichUser(t, db) // hanzo/alice, password "pw"
+
+	// 1) Bare portal login → sets the hanzo_session cookie.
+	form := url.Values{
+		"organization": {"hanzo"},
+		"application":  {"conf"},
+		"username":     {"alice"},
+		"password":     {"pw"},
+		"type":         {"login"},
+	}
+	resp, body := do(t, app, formReq("POST", PathLogin, form))
+	if resp.StatusCode != 200 || decode(t, body)["status"] != "ok" {
+		t.Fatalf("login status=%d body=%s", resp.StatusCode, body)
+	}
+	cookie := resp.Header.Get("Set-Cookie")
+	if !strings.HasPrefix(cookie, "hanzo_session=") {
+		t.Fatalf("login did not set the session cookie: %q", cookie)
+	}
+	for _, want := range []string{"HttpOnly", "secure", "SameSite=Lax", "path=/"} {
+		if !strings.Contains(cookie, want) {
+			t.Errorf("session cookie missing %s: %q", want, cookie)
+		}
+	}
+
+	// 2) get-account WITH the cookie (no bearer) → resolves alice, redacted.
+	req := formReqNoBody("GET", PathGetAccount)
+	req.Header.Set("Cookie", cookieKV(cookie))
+	resp2, body2 := do(t, app, req)
+	env := decode(t, body2)
+	if resp2.StatusCode != 200 || env["status"] != "ok" {
+		t.Fatalf("get-account via cookie status=%d body=%s", resp2.StatusCode, body2)
+	}
+	data, _ := env["data"].(map[string]any)
+	if data["owner"] != "hanzo" || env["name"] != "alice" {
+		t.Fatalf("cookie session resolved wrong principal: owner=%v name=%v", data["owner"], env["name"])
+	}
+	if v, ok := data["passwordHash"]; ok && v != "" {
+		t.Errorf("cookie get-account leaked passwordHash")
+	}
+}
+
+// A FORGED session cookie (attacker flips owner→admin) does not authenticate:
+// the signature fails, get-account stays anonymous. The whole security point.
+func TestSession_ForgedCookieRejected(t *testing.T) {
+	app, db := newServer(t)
+	seedApp(t, db, appOpts{clientID: "conf", secret: "s3cret", redirectURIs: []string{testRedirect}})
+	seedRichUser(t, db)
+
+	// A hand-built cookie with a bogus payload + mac — no valid signature exists
+	// without the platform cert key.
+	req := formReqNoBody("GET", PathGetAccount)
+	req.Header.Set("Cookie", "hanzo_session=eyJvIjoiYWRtaW4ifQ.deadbeef")
+	resp, body := do(t, app, req)
+	if resp.StatusCode != 200 || decode(t, body)["status"] != "error" {
+		t.Fatalf("forged cookie must not authenticate: status=%d body=%s", resp.StatusCode, body)
+	}
+}
+
+// cookieKV extracts "name=value" from a Set-Cookie header for the request echo.
+func cookieKV(setCookie string) string {
+	if i := strings.Index(setCookie, ";"); i >= 0 {
+		return setCookie[:i]
+	}
+	return setCookie
+}
+
+var _ = http.MethodGet

internal/oidc/signin.go

@@ -0,0 +1,84 @@
+// Copyright 2026 Hanzo AI, Inc. All rights reserved.
+
+package oidc
+
+import (
+	"github.com/hanzoai/orm"
+	"github.com/zap-proto/zip"
+
+	"github.com/hanzoai/iam/internal/httpx"
+	"github.com/hanzoai/iam/internal/sessions"
+	"github.com/hanzoai/iam/internal/store"
+)
+
+// The code→session exchange: POST /v1/iam/signin. After the authorize/login flow
+// redirects back with `?code&state`, the console posts them here (code+state ride
+// the query — what the @hanzo/iam client sends — or a JSON body) and iam2 redeems
+// the code for a durable SESSION, returning the account envelope like get-account.
+//
+// This is the session-establishment counterpart to the OAuth token endpoint: the
+// token endpoint trades a code (with client auth + PKCE) for an access token; signin
+// trades it for the portal's signed hanzo_session cookie. Possession of the 256-bit
+// single-use code is the proof — no client secret crosses this call — so the code is
+// BURNED on use: a replay establishes no second session.
+
+// PathSignin is the canonical code→session endpoint.
+const PathSignin = "/v1/iam/signin"
+
+// signinForm is the JSON body a non-query caller may post; the canonical @hanzo/iam
+// client sends code+state on the query string.
+type signinForm struct {
+	Code  string `json:"code"`
+	State string `json:"state"`
+}
+
+// signinHandler redeems an authorization code for a session and returns the account.
+func signinHandler(db orm.DB) zip.Handler {
+	return func(c *zip.Ctx) error {
+		ctx := c.Context()
+
+		// Query first (the redirect-flow client posts code+state as query params),
+		// then a JSON body for programmatic callers.
+		code := c.Query("code")
+		if code == "" {
+			var f signinForm
+			_ = c.Bind(&f)
+			code = f.Code
+		}
+		if code == "" {
+			return httpx.Err(c, "code is required")
+		}
+
+		tok, err := store.GetTokenByCode(ctx, db, code)
+		if err != nil {
+			return httpx.Err(c, "server_error")
+		}
+		now := nowFunc()
+		// One opaque answer for unknown / already-redeemed / expired — no oracle, and
+		// the same replay+expiry guards RedeemCode enforces (minus client/PKCE, which
+		// this session exchange does not present).
+		if tok == nil || tok.CodeIsUsed || (tok.CodeExpireIn != 0 && now.Unix() > tok.CodeExpireIn) {
+			return httpx.Err(c, "the authorization code is invalid or expired")
+		}
+		owner, name := splitSub(tok.User)
+		if owner == "" || name == "" {
+			return httpx.Err(c, "the authorization code has no subject")
+		}
+
+		// Burn the code (single-use) BEFORE establishing the session, so a replay
+		// loses the race and mints nothing.
+		tok.CodeIsUsed = true
+		if err := store.SaveToken(ctx, db, tok); err != nil {
+			return httpx.Err(c, "server_error")
+		}
+
+		// Establish the durable session the portal + gateway admin-guard read via
+		// get-account. Its sid is registered for revocation (sessions.Set).
+		if err := sessions.Set(ctx, c.Fiber(), db, owner, name, tok.Application); err != nil {
+			return httpx.Err(c, err.Error())
+		}
+
+		env, status := accountEnvelopeFor(ctx, db, owner, name)
+		return c.JSON(status, env)
+	}
+}

internal/oidc/signing_test.go

@@ -0,0 +1,272 @@
+// Copyright 2026 Hanzo AI, Inc. All rights reserved.
+
+package oidc
+
+import (
+	"context"
+	"crypto/ecdsa"
+	"crypto/elliptic"
+	"crypto/rand"
+	"crypto/rsa"
+	"crypto/x509"
+	"encoding/base64"
+	"encoding/pem"
+	"testing"
+	"time"
+
+	"github.com/golang-jwt/jwt/v5"
+	"github.com/luxfi/crypto/pq/mldsa/mldsa65"
+
+	"github.com/hanzoai/orm"
+
+	"github.com/hanzoai/iam/internal/schema"
+)
+
+// NewSignerFromCert picks the algorithm from the key type — RSA→RS256,
+// EC-P256→ES256, ML-DSA→MLDSA65 — so a token can never be signed under a
+// mismatched alg.
+func TestNewSignerFromCert_DispatchesByKeyType(t *testing.T) {
+	cases := []struct {
+		name string
+		cert *schema.Cert
+		want string
+	}{
+		{"rsa", rsaCert(t, "cert-rsa"), "RS256"},
+		{"ec", ecCert(t, "cert-ec"), "ES256"},
+		{"mldsa", mldsaCert(t, "cert-pq"), "MLDSA65"},
+	}
+	for _, tc := range cases {
+		t.Run(tc.name, func(t *testing.T) {
+			s, err := NewSignerFromCert(tc.cert, testApp(), "https://hanzo.id")
+			if err != nil {
+				t.Fatalf("build signer: %v", err)
+			}
+			if s.Alg() != tc.want {
+				t.Fatalf("alg = %q, want %q", s.Alg(), tc.want)
+			}
+		})
+	}
+}
+
+// An ES256 token round-trips: signed under the EC key, verified under its public
+// half, with the expected claims.
+func TestSigner_ES256RoundTrip(t *testing.T) {
+	cert := ecCert(t, "cert-ec")
+	s, err := NewSignerFromCert(cert, testApp(), "https://hanzo.id")
+	if err != nil {
+		t.Fatal(err)
+	}
+	now := time.Unix(1_800_000_000, 0)
+	tok, err := s.Sign(testApp(), "hanzo/alice", "alice@hanzo.ai", "Alice", "openid", time.Hour, now)
+	if err != nil {
+		t.Fatal(err)
+	}
+	pub, _, _, err := certPublicKey(cert)
+	if err != nil {
+		t.Fatal(err)
+	}
+	var claims Claims
+	parsed, err := jwt.ParseWithClaims(tok, &claims, func(*jwt.Token) (any, error) { return pub, nil },
+		jwt.WithValidMethods([]string{"ES256"}), jwt.WithTimeFunc(func() time.Time { return now.Add(time.Minute) }))
+	if err != nil || !parsed.Valid {
+		t.Fatalf("verify ES256: %v", err)
+	}
+	if claims.Subject != "hanzo/alice" || claims.Owner != "hanzo" {
+		t.Fatalf("claims wrong: %+v", claims)
+	}
+}
+
+// The post-quantum path is real: an ML-DSA-65 token signed by the Signer
+// verifies through the full package verify path (resolve kid → cert → public
+// key → circl Verify).
+func TestSigner_MLDSA65RoundTripThroughVerify(t *testing.T) {
+	db := openTestDB(t)
+	cert := mldsaCert(t, "cert-pq")
+	persistCert(t, db, cert)
+
+	s, err := NewSignerFromCert(cert, testApp(), "https://hanzo.id")
+	if err != nil {
+		t.Fatal(err)
+	}
+	if s.Alg() != algMLDSA65 {
+		t.Fatalf("alg = %q, want MLDSA65", s.Alg())
+	}
+	now := time.Unix(1_800_000_000, 0)
+	nowFuncSet(t, now.Add(time.Minute))
+
+	tok, err := s.SignID(testApp(), "hanzo/alice", "alice@hanzo.ai", "Alice", "openid", "nonce-xyz", time.Hour, now)
+	if err != nil {
+		t.Fatal(err)
+	}
+	claims, err := verifyToken(context.Background(), db, tok)
+	if err != nil {
+		t.Fatalf("verify MLDSA65 token: %v", err)
+	}
+	if claims.Subject != "hanzo/alice" || claims.Nonce != "nonce-xyz" || claims.TokenType != "id-token" {
+		t.Fatalf("claims wrong: %+v", claims)
+	}
+}
+
+// SignID echoes the nonce and marks the token as an id-token (OIDC Core).
+func TestSignID_EchoesNonce(t *testing.T) {
+	key := sharedKey(t)
+	s := NewRSASigner(key, "cert-hanzo", "https://hanzo.id")
+	now := time.Unix(1_800_000_000, 0)
+	tok, err := s.SignID(testApp(), "hanzo/alice", "a@h.ai", "Alice", "openid", "n-123", time.Hour, now)
+	if err != nil {
+		t.Fatal(err)
+	}
+	var claims Claims
+	if _, err := jwt.ParseWithClaims(tok, &claims, func(*jwt.Token) (any, error) { return &key.PublicKey, nil },
+		jwt.WithValidMethods([]string{"RS256"}), jwt.WithTimeFunc(func() time.Time { return now.Add(time.Minute) })); err != nil {
+		t.Fatal(err)
+	}
+	if claims.Nonce != "n-123" {
+		t.Fatalf("nonce = %q, want n-123", claims.Nonce)
+	}
+	if claims.TokenType != "id-token" {
+		t.Fatalf("tokenType = %q, want id-token", claims.TokenType)
+	}
+}
+
+// verifyToken refuses alg:none — a forged unsigned token can never select a
+// trusting verification path.
+func TestVerifyToken_RejectsAlgNone(t *testing.T) {
+	db := openTestDB(t)
+	persistCert(t, db, rsaCert(t, "cert-hanzo"))
+
+	header := b64url(t, `{"alg":"none","typ":"JWT","kid":"cert-hanzo"}`)
+	payload := b64url(t, `{"sub":"hanzo/attacker","iss":"https://hanzo.id"}`)
+	forged := header + "." + payload + "."
+	if _, err := verifyToken(context.Background(), db, forged); err == nil {
+		t.Fatal("alg:none token accepted")
+	}
+}
+
+// verifyToken fails closed on a kid that resolves to no signing cert.
+func TestVerifyToken_RejectsUnknownKid(t *testing.T) {
+	db := openTestDB(t)
+	persistCert(t, db, rsaCert(t, "cert-hanzo"))
+	other := rsaCert(t, "cert-ghost") // never persisted
+	s, _ := NewSignerFromCert(other, testApp(), "https://hanzo.id")
+	now := time.Unix(1_800_000_000, 0)
+	nowFuncSet(t, now.Add(time.Minute))
+	tok, _ := s.Sign(testApp(), "hanzo/alice", "", "", "openid", time.Hour, now)
+	if _, err := verifyToken(context.Background(), db, tok); err == nil {
+		t.Fatal("token with an unknown kid was accepted")
+	}
+}
+
+// A tenant cannot shadow a platform signing key: a cert created under a
+// non-platform owner with a colliding name (kid) never verifies a forged token,
+// even when a real platform cert of the same name also exists.
+func TestVerify_TenantCannotShadowSigningKey(t *testing.T) {
+	db := openTestDB(t)
+	base := time.Unix(1_800_000_000, 0)
+	nowFuncSet(t, base.Add(time.Minute))
+
+	// Legit platform signing cert (admin owner, shared key), kid = cert-hanzo.
+	persistCert(t, db, rsaCert(t, "cert-hanzo"))
+
+	// Attacker creates a cert with the SAME name under their own org + their key.
+	attackerKey, err := rsa.GenerateKey(rand.Reader, 2048)
+	if err != nil {
+		t.Fatal(err)
+	}
+	ac := &schema.Cert{CryptoAlgorithm: "RS256", PrivateKey: rsaKeyToPEM(t, attackerKey)}
+	ac.Owner, ac.Name = "attacker-org", "cert-hanzo"
+	persistCert(t, db, ac)
+
+	// Attacker forges a token signed with THEIR key, kid=cert-hanzo, claiming admin.
+	forger := NewRSASigner(attackerKey, "cert-hanzo", "https://hanzo.id")
+	forged, err := forger.Sign(&schema.Application{ClientId: "victim"}, "admin/superadmin", "", "", "openid", time.Hour, base)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if _, err := verifyToken(context.Background(), db, forged); err == nil {
+		t.Fatal("FORGERY ACCEPTED: a tenant cert shadowed a platform signing key")
+	}
+}
+
+// A cert under a non-platform owner is never a trusted signing key, even when it
+// is the only cert with that name.
+func TestVerify_NonPlatformCertNeverTrusted(t *testing.T) {
+	db := openTestDB(t)
+	base := time.Unix(1_800_000_000, 0)
+	nowFuncSet(t, base.Add(time.Minute))
+
+	attackerKey, err := rsa.GenerateKey(rand.Reader, 2048)
+	if err != nil {
+		t.Fatal(err)
+	}
+	ac := &schema.Cert{CryptoAlgorithm: "RS256", PrivateKey: rsaKeyToPEM(t, attackerKey)}
+	ac.Owner, ac.Name = "attacker-org", "cert-evil"
+	persistCert(t, db, ac)
+
+	forger := NewRSASigner(attackerKey, "cert-evil", "https://hanzo.id")
+	forged, _ := forger.Sign(&schema.Application{ClientId: "victim"}, "admin/superadmin", "", "", "openid", time.Hour, base)
+	if _, err := verifyToken(context.Background(), db, forged); err == nil {
+		t.Fatal("a non-platform cert must never verify a token")
+	}
+}
+
+// --- cert builders + helpers ---
+
+func rsaCert(t *testing.T, name string) *schema.Cert {
+	t.Helper()
+	c := &schema.Cert{CryptoAlgorithm: "RS256", PrivateKey: rsaKeyToPEM(t, sharedKey(t))}
+	c.Owner, c.Name = "admin", name
+	return c
+}
+
+func ecCert(t *testing.T, name string) *schema.Cert {
+	t.Helper()
+	key, err := ecdsa.GenerateKey(elliptic.P256(), rand.Reader)
+	if err != nil {
+		t.Fatal(err)
+	}
+	der, err := x509.MarshalECPrivateKey(key)
+	if err != nil {
+		t.Fatal(err)
+	}
+	pemText := string(pem.EncodeToMemory(&pem.Block{Type: "EC PRIVATE KEY", Bytes: der}))
+	c := &schema.Cert{CryptoAlgorithm: "ES256", PrivateKey: pemText}
+	c.Owner, c.Name = "admin", name
+	return c
+}
+
+func mldsaCert(t *testing.T, name string) *schema.Cert {
+	t.Helper()
+	_, sk, err := mldsa65.GenerateKey(rand.Reader)
+	if err != nil {
+		t.Fatal(err)
+	}
+	c := &schema.Cert{CryptoAlgorithm: "MLDSA65", PrivateKey: base64.StdEncoding.EncodeToString(sk.Bytes())}
+	c.Owner, c.Name = "admin", name
+	return c
+}
+
+func persistCert(t *testing.T, db orm.DB, cert *schema.Cert) {
+	t.Helper()
+	c := orm.New[schema.Cert](db)
+	model := c.Model
+	*c = *cert
+	c.Model = model
+	c.SetId(cert.Owner + "/" + cert.Name)
+	if err := c.CreateCtx(context.Background()); err != nil {
+		t.Fatalf("persist cert: %v", err)
+	}
+}
+
+func b64url(t *testing.T, s string) string {
+	t.Helper()
+	return base64.RawURLEncoding.EncodeToString([]byte(s))
+}
+
+// nowFuncSet pins the package clock for the duration of a test.
+func nowFuncSet(t *testing.T, at time.Time) {
+	t.Helper()
+	prev := nowFunc
+	nowFunc = func() time.Time { return at }
+	t.Cleanup(func() { nowFunc = prev })
+}

internal/oidc/signup.go

@@ -0,0 +1,260 @@
+// Copyright 2026 Hanzo AI, Inc. All rights reserved.
+
+package oidc
+
+import (
+	"context"
+	"net/mail"
+	"regexp"
+	"strings"
+	"unicode"
+
+	"github.com/hanzoai/orm"
+	"github.com/zap-proto/zip"
+
+	"github.com/hanzoai/iam/internal/httpx"
+	"github.com/hanzoai/iam/internal/schema"
+	"github.com/hanzoai/iam/internal/store"
+	"github.com/hanzoai/iam/internal/users"
+)
+
+// The native front-door signup: POST /v1/iam/signup. The @hanzo/iam SDK + the
+// hanzo.id portal post the sign-up form here to create a new account. It mirrors
+// the v1 Casdoor Signup contract (controllers/account.go): the casibase
+// {status,msg,data} envelope, resolve-app → enforce-policy → create-user, with
+// the password hashed (never stored plaintext) and the created row returned
+// REDACTED.
+//
+// Password sign-up only in this increment (the enabled-method the portal drives);
+// the email/phone-OTP-gated sign-up variant plugs its verification check
+// (CheckVerificationCode) in ahead of the create at cutover.
+
+// PathSignup is the canonical front-door signup endpoint.
+const PathSignup = "/v1/iam/signup"
+
+// signupForm is the sign-up request the SDK/portal posts — the signup-relevant
+// subset of v1's form.AuthForm.
+type signupForm struct {
+	Application  string `json:"application"`
+	ClientId     string `json:"clientId"`
+	Organization string `json:"organization"`
+	Username     string `json:"username"`
+	Password     string `json:"password"`
+	Name         string `json:"name"` // display name
+	FirstName    string `json:"firstName"`
+	LastName     string `json:"lastName"`
+	Email        string `json:"email"`
+	Phone        string `json:"phone"`
+	CountryCode  string `json:"countryCode"`
+	Affiliation  string `json:"affiliation"`
+}
+
+// signupHandler validates the front-door signup policy and creates the account.
+func signupHandler(db orm.DB) zip.Handler {
+	return func(c *zip.Ctx) error {
+		var f signupForm
+		if err := c.Bind(&f); err != nil {
+			return httpx.Err(c, "invalid request body")
+		}
+		ctx := c.Context()
+
+		f.Organization = strings.TrimSpace(f.Organization)
+		f.Username = strings.TrimSpace(f.Username)
+		if f.Organization == "" || f.Username == "" || f.Password == "" {
+			return httpx.Err(c, "organization, username and password are required")
+		}
+
+		// Resolve the application (by clientId when present, else by name under the
+		// admin owner — the iam2 storage convention), then enforce its policy.
+		app, err := resolveSignupApp(ctx, db, f)
+		if err != nil {
+			return httpx.Err(c, err.Error())
+		}
+		if app == nil {
+			return httpx.Err(c, "the application: "+f.Application+" does not exist")
+		}
+		if !app.EnableSignUp {
+			return httpx.Err(c, "the application does not allow to sign up new account")
+		}
+		if !app.EnablePassword {
+			return httpx.Err(c, "the application does not allow password sign-up")
+		}
+
+		// Tenant isolation: the requested org must be the app's own org, a shared
+		// app, or an app that lets users choose their org — the same gate login
+		// enforces, so a signup cannot land a user in an arbitrary tenant.
+		if f.Organization != app.Organization && !app.IsShared && app.OrgChoiceMode == "" {
+			return httpx.Err(c, "the user is not permitted to sign up to this application")
+		}
+
+		org, err := store.GetOrganizationByName(ctx, db, f.Organization)
+		if err != nil {
+			return httpx.Err(c, err.Error())
+		}
+		if org == nil {
+			// v1 auto-mints the founder's own org (TenantOrgForSignup /
+			// CreatePersonalOrganization) only for a platform tenant org; that path
+			// needs an org-create helper + the Org.Parent tenant-parent model, neither
+			// of which iam2 has yet, so signup requires the org to exist. See report.
+			return httpx.Err(c, "the organization: "+f.Organization+" does not exist")
+		}
+
+		// Username policy (v1 object/check.go CheckUserSignup).
+		if msg := usernamePolicyError(f.Username); msg != "" {
+			return httpx.Err(c, msg)
+		}
+		// Uniqueness within the org — one opaque check per identifier.
+		if taken, err := userExists(ctx, db, f.Organization, f.Username); err != nil {
+			return httpx.Err(c, err.Error())
+		} else if taken {
+			return httpx.Err(c, "username already exists")
+		}
+		email := strings.ToLower(strings.TrimSpace(f.Email))
+		if email != "" {
+			if !isEmailValid(email) {
+				return httpx.Err(c, "email is invalid")
+			}
+			if existing, err := store.GetUserByEmail(ctx, db, f.Organization, email); err != nil {
+				return httpx.Err(c, err.Error())
+			} else if existing != nil {
+				return httpx.Err(c, "email already exists")
+			}
+		}
+		// Password policy (v1 org.PasswordOptions complexity).
+		if msg := passwordPolicyError(org.PasswordOptions, f.Password); msg != "" {
+			return httpx.Err(c, msg)
+		}
+
+		// Create through the ONE canonical user path: bcrypt-hash the password once,
+		// persist, return the REDACTED row (no plaintext, no digest ever stored or
+		// returned). PasswordType is stamped "bcrypt" — exactly what internal/cred
+		// verifies for a new iam2 row.
+		created, err := users.New(db).Create(ctx, &users.CreateInput{
+			User: schema.User{
+				Owner:             f.Organization,
+				Name:              f.Username,
+				Type:              "normal-user",
+				DisplayName:       displayName(f),
+				FirstName:         f.FirstName,
+				LastName:          f.LastName,
+				Email:             email,
+				EmailVerified:     false,
+				Phone:             f.Phone,
+				CountryCode:       f.CountryCode,
+				Affiliation:       f.Affiliation,
+				Avatar:            org.DefaultAvatar,
+				SignupApplication: app.Name,
+				RegisterType:      "Application Signup",
+				RegisterSource:    f.Organization + "/" + app.Name,
+			},
+			Password: f.Password,
+		})
+		if err != nil {
+			return httpx.Err(c, err.Error())
+		}
+		return httpx.Ok(c, created)
+	}
+}
+
+// resolveSignupApp resolves the signup's OAuth app: by clientId when present,
+// else by (admin, application name) — mirroring resolveLoginApp.
+func resolveSignupApp(ctx context.Context, db orm.DB, f signupForm) (*schema.Application, error) {
+	if f.ClientId != "" {
+		return store.GetApplicationByClientId(ctx, db, f.ClientId)
+	}
+	if f.Application != "" {
+		return store.GetApplicationByName(ctx, db, "admin", f.Application)
+	}
+	return nil, nil
+}
+
+// userExists reports whether a user (org, name) already exists.
+func userExists(ctx context.Context, db orm.DB, org, name string) (bool, error) {
+	u, err := store.GetUserByName(ctx, db, org, name)
+	return u != nil, err
+}
+
+// displayName is the user's display name: the supplied name, a "First Last"
+// composite, or the username as a last resort — v1's precedence.
+func displayName(f signupForm) string {
+	if f.FirstName != "" || f.LastName != "" {
+		if n := strings.TrimSpace(f.FirstName + " " + f.LastName); n != "" {
+			return n
+		}
+	}
+	if f.Name != "" {
+		return f.Name
+	}
+	return f.Username
+}
+
+// usernamePolicyError returns the first username rule a candidate violates, or
+// "" when it passes — the v1 CheckUserSignup rules for the Username item.
+func usernamePolicyError(username string) string {
+	if len(username) <= 1 {
+		return "username must have at least 2 characters"
+	}
+	if unicode.IsDigit(rune(username[0])) {
+		return "username cannot start with a digit"
+	}
+	if isEmailValid(username) {
+		return "username cannot be an email address"
+	}
+	if strings.IndexFunc(username, unicode.IsSpace) >= 0 {
+		return "username cannot contain white spaces"
+	}
+	return ""
+}
+
+// Password-complexity option matchers — the v1 object/check_password_complexity.go
+// option set, driven by the organization's PasswordOptions.
+var (
+	pwReLower   = regexp.MustCompile(`[a-z]`)
+	pwReUpper   = regexp.MustCompile(`[A-Z]`)
+	pwReDigit   = regexp.MustCompile(`\d`)
+	pwReSpecial = regexp.MustCompile("[!-/:-@[-`{-~]")
+)
+
+// passwordPolicyError returns the first complexity rule the password violates
+// under the organization's options, or "" when it passes. With no options set,
+// only the non-empty check applies (v1 parity).
+func passwordPolicyError(options []string, password string) string {
+	if password == "" {
+		return "password cannot be empty"
+	}
+	for _, opt := range options {
+		switch opt {
+		case "AtLeast6":
+			if len(password) < 6 {
+				return "the password must have at least 6 characters"
+			}
+		case "AtLeast8":
+			if len(password) < 8 {
+				return "the password must have at least 8 characters"
+			}
+		case "Aa123":
+			if !pwReLower.MatchString(password) || !pwReUpper.MatchString(password) || !pwReDigit.MatchString(password) {
+				return "the password must contain at least one uppercase letter, one lowercase letter and one digit"
+			}
+		case "SpecialChar":
+			if !pwReSpecial.MatchString(password) {
+				return "the password must contain at least one special character"
+			}
+		case "NoRepeat":
+			for i := 0; i+1 < len(password); i++ {
+				if password[i] == password[i+1] {
+					return "the password must not contain any repeated characters"
+				}
+			}
+		}
+	}
+	return ""
+}
+
+// isEmailValid reports whether s parses as an email address — v1's
+// util.IsEmailValid (net/mail.ParseAddress), the single email check shared by
+// signup and send-verification-code.
+func isEmailValid(s string) bool {
+	_, err := mail.ParseAddress(s)
+	return err == nil
+}

internal/oidc/signup_test.go

@@ -0,0 +1,181 @@
+// Copyright 2026 Hanzo AI, Inc. All rights reserved.
+
+package oidc
+
+import (
+	"context"
+	"testing"
+
+	"github.com/hanzoai/orm"
+	"github.com/zap-proto/zip"
+
+	"github.com/hanzoai/iam/internal/schema"
+	"github.com/hanzoai/iam/internal/store"
+	"github.com/hanzoai/iam/internal/users"
+)
+
+// seedOrg creates an organization row (owner "admin", v1 convention) with the
+// given name and optional password-complexity options.
+func seedOrg(t *testing.T, db orm.DB, name string, passwordOptions ...string) {
+	t.Helper()
+	o := orm.New[schema.Organization](db)
+	o.Owner = "admin"
+	o.Name = name
+	o.PasswordOptions = passwordOptions
+	o.SetId("admin/" + name)
+	if err := o.CreateCtx(context.Background()); err != nil {
+		t.Fatalf("seed org: %v", err)
+	}
+}
+
+// signupReq drives POST /v1/iam/signup and returns the status + decoded envelope.
+func signupReq(t *testing.T, app *zip.App, body map[string]string) (int, map[string]any) {
+	t.Helper()
+	resp, raw := do(t, app, jsonReq("POST", PathSignup, body))
+	return resp.StatusCode, decode(t, raw)
+}
+
+// The happy path creates the account, returns it REDACTED (owner/name present,
+// no secret), and stores the password as an argon2id hash — never plaintext.
+func TestSignup_HappyPathCreatesRedactedUser(t *testing.T) {
+	app, db := newServer(t)
+	seedApp(t, db, appOpts{clientID: "conf", secret: "s3cret", redirectURIs: []string{testRedirect}, signup: true})
+	seedOrg(t, db, "hanzo")
+
+	const pw = "correct horse battery staple"
+	status, env := signupReq(t, app, map[string]string{
+		"application":  "conf",
+		"organization": "hanzo",
+		"username":     "newbie",
+		"password":     pw,
+		"name":         "New Bie",
+		"email":        "newbie@hanzo.ai",
+	})
+	if status != 200 || env["status"] != "ok" {
+		t.Fatalf("status=%d env=%v, want 200 ok", status, env)
+	}
+	data, ok := env["data"].(map[string]any)
+	if !ok {
+		t.Fatalf("data is not an object: %v", env["data"])
+	}
+	if data["owner"] != "hanzo" || data["name"] != "newbie" {
+		t.Errorf("data owner/name = %v/%v, want hanzo/newbie", data["owner"], data["name"])
+	}
+	// The response must never carry the digest or any secret.
+	for _, secret := range []string{"passwordHash", "passwordSalt", "accessSecret", "accessSecretHash"} {
+		if v, present := data[secret]; present && v != "" {
+			t.Errorf("signup response leaked %q = %v", secret, v)
+		}
+	}
+
+	// The STORED row holds an argon2id hash (PasswordType=argon2id) that verifies the
+	// password — and is NOT the plaintext. This is the no-plaintext contract.
+	stored, err := store.GetUserByName(context.Background(), db, "hanzo", "newbie")
+	if err != nil || stored == nil {
+		t.Fatalf("stored user lookup: %v (nil=%v)", err, stored == nil)
+	}
+	if stored.PasswordHash == "" || stored.PasswordHash == pw {
+		t.Fatalf("password stored as plaintext or empty: %q", stored.PasswordHash)
+	}
+	if stored.PasswordType != "argon2id" {
+		t.Errorf("PasswordType = %q, want argon2id", stored.PasswordType)
+	}
+	if !users.VerifyPassword(stored, pw, "") {
+		t.Error("stored hash does not verify the signup password")
+	}
+	if users.VerifyPassword(stored, "wrong", "") {
+		t.Error("a wrong password verified — hashing is broken")
+	}
+}
+
+// Every failure mode returns {status:"error"} on a 200 (the casibase envelope)
+// and creates no user.
+func TestSignup_Errors(t *testing.T) {
+	newbieBody := func() map[string]string {
+		return map[string]string{
+			"application": "conf", "organization": "hanzo",
+			"username": "newbie", "password": "correct horse battery staple",
+		}
+	}
+
+	t.Run("missing required fields", func(t *testing.T) {
+		app, db := newServer(t)
+		seedApp(t, db, appOpts{clientID: "conf", secret: "s3cret", signup: true})
+		seedOrg(t, db, "hanzo")
+		status, env := signupReq(t, app, map[string]string{"application": "conf", "organization": "hanzo"})
+		if status != 200 || env["status"] != "error" {
+			t.Fatalf("status=%d env=%v, want 200 error", status, env)
+		}
+	})
+
+	t.Run("application does not exist", func(t *testing.T) {
+		app, db := newServer(t)
+		seedOrg(t, db, "hanzo")
+		body := newbieBody()
+		body["application"] = "ghost"
+		_, env := signupReq(t, app, body)
+		if env["status"] != "error" {
+			t.Fatalf("want error, got %v", env)
+		}
+	})
+
+	t.Run("signup disabled", func(t *testing.T) {
+		app, db := newServer(t)
+		seedApp(t, db, appOpts{clientID: "conf", secret: "s3cret", signup: false}) // EnableSignUp=false
+		seedOrg(t, db, "hanzo")
+		_, env := signupReq(t, app, newbieBody())
+		if env["status"] != "error" {
+			t.Fatalf("signup must be refused when disabled, got %v", env)
+		}
+		if u, _ := store.GetUserByName(context.Background(), db, "hanzo", "newbie"); u != nil {
+			t.Error("a user was created despite signup being disabled")
+		}
+	})
+
+	t.Run("organization does not exist", func(t *testing.T) {
+		app, db := newServer(t)
+		seedApp(t, db, appOpts{clientID: "conf", secret: "s3cret", signup: true}) // no org seeded
+		_, env := signupReq(t, app, newbieBody())
+		if env["status"] != "error" {
+			t.Fatalf("want error for missing org, got %v", env)
+		}
+	})
+
+	t.Run("username already taken", func(t *testing.T) {
+		app, db := newServer(t)
+		seedApp(t, db, appOpts{clientID: "conf", secret: "s3cret", signup: true})
+		seedOrg(t, db, "hanzo")
+		seedUser(t, db, "newbie", "newbie@hanzo.ai", "pw") // already exists
+		_, env := signupReq(t, app, newbieBody())
+		if env["status"] != "error" || env["msg"] != "username already exists" {
+			t.Fatalf("want 'username already exists', got %v", env)
+		}
+	})
+
+	t.Run("username policy violated", func(t *testing.T) {
+		app, db := newServer(t)
+		seedApp(t, db, appOpts{clientID: "conf", secret: "s3cret", signup: true})
+		seedOrg(t, db, "hanzo")
+		body := newbieBody()
+		body["username"] = "1bad" // starts with a digit
+		_, env := signupReq(t, app, body)
+		if env["status"] != "error" {
+			t.Fatalf("digit-leading username must be refused, got %v", env)
+		}
+	})
+
+	t.Run("password fails org complexity", func(t *testing.T) {
+		app, db := newServer(t)
+		seedApp(t, db, appOpts{clientID: "conf", secret: "s3cret", signup: true})
+		seedOrg(t, db, "hanzo", "AtLeast8") // require 8+ chars
+		body := newbieBody()
+		body["password"] = "short"
+		_, env := signupReq(t, app, body)
+		if env["status"] != "error" {
+			t.Fatalf("short password must be refused under AtLeast8, got %v", env)
+		}
+		if u, _ := store.GetUserByName(context.Background(), db, "hanzo", "newbie"); u != nil {
+			t.Error("a user was created despite the password failing policy")
+		}
+	})
+}

internal/oidc/token.go

@@ -0,0 +1,544 @@
+// Copyright 2026 Hanzo AI, Inc. All rights reserved.
+
+package oidc
+
+import (
+	"context"
+	"crypto/sha256"
+	"crypto/subtle"
+	"encoding/base64"
+	"encoding/hex"
+	"errors"
+	"net/url"
+	"os"
+	"strings"
+	"time"
+
+	"github.com/hanzoai/orm"
+	"github.com/zap-proto/zip"
+
+	"github.com/hanzoai/iam/internal/httpx"
+	"github.com/hanzoai/iam/internal/schema"
+	"github.com/hanzoai/iam/internal/store"
+	"github.com/hanzoai/iam/internal/users"
+)
+
+// The token endpoint: POST /v1/iam/oauth/token. It dispatches the three grant
+// types iam2 issues — authorization_code (PKCE-verified, single-use code →
+// access JWT + id_token when openid + rotating refresh), refresh_token
+// (rotation with reuse detection, refresh.go), and client_credentials
+// (machine-to-machine, no user, no refresh). Every response carries no-store
+// caching; every error follows the RFC 6749 §5.2 taxonomy (invalid_client → 401
+// with WWW-Authenticate, everything else → 400). Implicit is permanently absent.
+
+// nowFunc is indirected so tests can pin time. Production uses time.Now.
+var nowFunc = time.Now
+
+// tokenResponse is the RFC 6749 §5.1 / OIDC success body.
+type tokenResponse struct {
+	AccessToken  string `json:"access_token"`
+	IdToken      string `json:"id_token,omitempty"`
+	RefreshToken string `json:"refresh_token,omitempty"`
+	TokenType    string `json:"token_type"`
+	ExpiresIn    int    `json:"expires_in"`
+	Scope        string `json:"scope,omitempty"`
+}
+
+// routeToken registers the ONE token endpoint: POST /v1/iam/oauth/token (the
+// RFC 6749 / discovery `token_endpoint`). No legacy `access_token` alias — every
+// client posts to the standard path; the stack is fixed to it, not shimmed.
+func routeToken(r zip.Router, db orm.DB) {
+	r.Post(PathToken, tokenHandler(db))
+}
+
+// param reads an OAuth parameter from the query first, then the form body
+// (application/x-www-form-urlencoded — what NextAuth and most clients send).
+func param(c *zip.Ctx, key string) string {
+	if v := c.Query(key); v != "" {
+		return v
+	}
+	return c.Fiber().FormValue(key)
+}
+
+// tokenError writes the RFC 6749 §5.2 error body with the right status.
+func tokenError(c *zip.Ctx, status int, code, desc string) error {
+	body := map[string]string{"error": code}
+	if desc != "" {
+		body["error_description"] = desc
+	}
+	return c.JSON(status, body)
+}
+
+// tokenErrorClient answers a client-authentication failure: 401 + the
+// WWW-Authenticate challenge, per RFC 6749 §5.2.
+func tokenErrorClient(c *zip.Ctx, desc string) error {
+	c.SetHeader("WWW-Authenticate", `Basic realm="OAuth2"`)
+	return tokenError(c, 401, "invalid_client", desc)
+}
+
+// setTokenCacheHeaders forbids caching of any token response (RFC 6749 §5.1).
+func setTokenCacheHeaders(c *zip.Ctx) {
+	c.SetHeader("Cache-Control", "no-store")
+	c.SetHeader("Pragma", "no-cache")
+}
+
+func tokenHandler(db orm.DB) zip.Handler {
+	return func(c *zip.Ctx) error {
+		setTokenCacheHeaders(c)
+		switch param(c, "grant_type") {
+		case "authorization_code":
+			return authorizationCodeGrant(c, db)
+		case "refresh_token":
+			return refreshTokenGrant(c, db)
+		case "client_credentials":
+			return clientCredentialsGrant(c, db)
+		case "password":
+			return passwordGrant(c, db)
+		case grantTypeTokenExchange:
+			return tokenExchangeGrant(c, db)
+		case deviceGrant:
+			return deviceCodeGrant(c, db)
+		case "":
+			return tokenError(c, 400, "invalid_request", "grant_type is required")
+		default:
+			return tokenError(c, 400, "unsupported_grant_type", "unsupported grant_type")
+		}
+	}
+}
+
+// authorizationCodeGrant redeems a single-use, PKCE-bound authorization code for
+// an access token (+ id_token when openid + rotating refresh).
+func authorizationCodeGrant(c *zip.Ctx, db orm.DB) error {
+	ctx := c.Context()
+	now := nowFunc()
+
+	code := param(c, "code")
+	if code == "" {
+		return tokenError(c, 400, "invalid_request", "code is required")
+	}
+	clientID, clientSecret := clientAuth(c)
+	verifier := param(c, "code_verifier")
+	redirectURI := param(c, "redirect_uri")
+
+	tok, err := store.GetTokenByCode(ctx, db, code)
+	if err != nil {
+		return tokenError(c, 500, "server_error", "")
+	}
+	app, err := resolveTokenApp(ctx, db, tok)
+	if err != nil {
+		return tokenError(c, 500, "server_error", "")
+	}
+	// Unknown code, an app that vanished, or a row that is a DEVICE authorization
+	// rather than an authorization code — one opaque answer, no oracle. The kind
+	// check is load-bearing: a device row carries no PKCE challenge and no
+	// redirect_uri, so redeeming one here would mint on a grant no human approved.
+	if app == nil || isDevice(tok) {
+		return tokenError(c, 400, "invalid_grant", "invalid authorization code")
+	}
+
+	// The presented client must be the code's client.
+	if clientID != "" && subtle.ConstantTimeCompare([]byte(clientID), []byte(app.ClientId)) != 1 {
+		return tokenError(c, 400, "invalid_grant", "client mismatch")
+	}
+	// Confidential client: verify the secret (constant-time). A public client
+	// (PKCE, no stored secret) may present none.
+	if app.ClientSecret != "" {
+		if subtle.ConstantTimeCompare([]byte(clientSecret), []byte(app.ClientSecret)) != 1 {
+			return tokenErrorClient(c, "client authentication failed")
+		}
+	}
+	// redirect_uri binding (RFC 6749 §4.1.3): if the code carries one, the token
+	// request must present the same one.
+	if tok.RedirectUri != "" {
+		if redirectURI == "" || subtle.ConstantTimeCompare([]byte(redirectURI), []byte(tok.RedirectUri)) != 1 {
+			return tokenError(c, 400, "invalid_grant", "redirect_uri mismatch")
+		}
+	}
+	// Core guard: replay / expiry / client / PKCE.
+	if err := RedeemCode(tok, app.Name, verifier, now); err != nil {
+		return redeemErrToResponse(c, err)
+	}
+	// A public client MUST have used PKCE — never let a no-secret grant through
+	// without a challenge (downgrade / code injection defense).
+	if app.ClientSecret == "" && tok.CodeChallenge == "" {
+		return tokenError(c, 400, "invalid_grant", "PKCE is required for public clients")
+	}
+
+	// One-shot: burn the code, then mint the grant's tokens onto the same row.
+	tok.CodeIsUsed = true
+	resp, err := issueTokens(ctx, db, c, app, tok, newFamilyID(tok), now)
+	if err != nil {
+		return tokenError(c, 500, "server_error", "")
+	}
+	if err := store.SaveToken(ctx, db, tok); err != nil {
+		return tokenError(c, 500, "server_error", "")
+	}
+	return c.JSON(200, resp)
+}
+
+// clientCredentialsGrant issues a machine-to-machine access token. The subject
+// is the application itself; there is no end user, no id_token, and no refresh
+// token (RFC 6749 §4.4 + OIDC — an id_token requires an authenticated user).
+func clientCredentialsGrant(c *zip.Ctx, db orm.DB) error {
+	ctx := c.Context()
+	now := nowFunc()
+
+	clientID, clientSecret := clientAuth(c)
+	if clientID == "" {
+		return tokenErrorClient(c, "client authentication required")
+	}
+	app, err := store.GetApplicationByClientId(ctx, db, clientID)
+	if err != nil {
+		return tokenError(c, 500, "server_error", "")
+	}
+	// A public client (no secret) can never use client_credentials.
+	if app == nil || app.ClientSecret == "" ||
+		subtle.ConstantTimeCompare([]byte(clientSecret), []byte(app.ClientSecret)) != 1 {
+		return tokenErrorClient(c, "client authentication failed")
+	}
+	if isInternalApp(app) {
+		return tokenErrorClient(c, "client is not permitted on this endpoint")
+	}
+
+	scope := param(c, "scope")
+	ttl := appTTL(app)
+	signer, err := signerFor(ctx, db, app, tokenIssuer(c))
+	if err != nil {
+		return tokenError(c, 500, "server_error", "")
+	}
+	sub := app.GetId() // <appOwner>/<appName>, per v1
+	access, err := signer.Sign(app, sub, "", app.Name, scope, ttl, now)
+	if err != nil {
+		return tokenError(c, 500, "server_error", "")
+	}
+	row := &schema.Token{
+		Owner:           app.Owner,
+		Application:     app.Name,
+		Organization:    app.Organization,
+		User:            sub,
+		Scope:           scope,
+		TokenType:       "Bearer",
+		ExpiresIn:       int(ttl.Seconds()),
+		AccessTokenHash: hashToken(access),
+	}
+	row.Name = "cc-" + hashToken(access)[:32]
+	if err := store.PersistToken(ctx, db, row); err != nil {
+		return tokenError(c, 500, "server_error", "")
+	}
+	return c.JSON(200, tokenResponse{
+		AccessToken: access,
+		TokenType:   "Bearer",
+		ExpiresIn:   int(ttl.Seconds()),
+		Scope:       scope,
+	})
+}
+
+// passwordGrant issues tokens for a Resource Owner Password Credentials request
+// (RFC 6749 §4.3) — the durable first-party console session (session.ts posts
+// grant_type=password with the confidential client + username/password). It is a
+// TRUSTED flow: confidential clients only (a public client + password grant is a
+// phishing footgun), the app must have password login enabled, and the password
+// is verified through the SAME algorithm-aware, per-row path the login form uses
+// (argon2id for every live v1 row, bcrypt for new rows). One generic failure for
+// unknown-user and bad-password — no user-enumeration oracle.
+func passwordGrant(c *zip.Ctx, db orm.DB) error {
+	ctx := c.Context()
+	now := nowFunc()
+
+	clientID, clientSecret := clientAuth(c)
+	if clientID == "" {
+		return tokenErrorClient(c, "client authentication required")
+	}
+	app, err := store.GetApplicationByClientId(ctx, db, clientID)
+	if err != nil {
+		return tokenError(c, 500, "server_error", "")
+	}
+	if app == nil || app.ClientSecret == "" ||
+		subtle.ConstantTimeCompare([]byte(clientSecret), []byte(app.ClientSecret)) != 1 {
+		return tokenErrorClient(c, "client authentication failed")
+	}
+	if isInternalApp(app) {
+		return tokenErrorClient(c, "client is not permitted on this endpoint")
+	}
+	if !app.IsPasswordEnabled() {
+		return tokenError(c, 400, "unauthorized_client", "password grant is not enabled for this client")
+	}
+
+	username, password := param(c, "username"), param(c, "password")
+	if username == "" || password == "" {
+		return tokenError(c, 400, "invalid_request", "username and password are required")
+	}
+	// Org scope: an explicit `organization` wins; otherwise the client's own org
+	// (a same-org first-party login — the console's default).
+	org := param(c, "organization")
+	if org == "" {
+		org = app.Organization
+	}
+
+	user, err := resolveLoginUser(ctx, db, org, username)
+	if err != nil {
+		return tokenError(c, 500, "server_error", "")
+	}
+	orgPasswordType := loginOrgPasswordType(ctx, db, org)
+	if user == nil || !users.VerifyPassword(user, password, orgPasswordType) {
+		return tokenError(c, 400, "invalid_grant", "the username or password is incorrect")
+	}
+	if user.IsForbidden || user.IsDeleted {
+		return tokenError(c, 400, "invalid_grant", "the user is forbidden")
+	}
+
+	// Build a fresh grant row (owner/name upfront so newFamilyID has a stable id),
+	// then mint through the ONE shared token path (access + id_token on openid +
+	// rotating refresh) so the password grant's token shape never drifts.
+	name, err := newOpaqueToken()
+	if err != nil {
+		return tokenError(c, 500, "server_error", "")
+	}
+	row := &schema.Token{
+		Owner:        user.Owner,
+		Name:         "pwd-" + name[:32],
+		Application:  app.Name,
+		Organization: user.Owner,
+		User:         user.Owner + "/" + user.Name,
+		Scope:        param(c, "scope"),
+	}
+	resp, err := issueTokens(ctx, db, c, app, row, newFamilyID(row), now)
+	if err != nil {
+		return tokenError(c, 500, "server_error", "")
+	}
+	if err := store.PersistToken(ctx, db, row); err != nil {
+		return tokenError(c, 500, "server_error", "")
+	}
+	return c.JSON(200, resp)
+}
+
+// issueTokens mints the grant's tokens onto row: a signed access JWT, an
+// id_token when the openid scope is present (echoing the stored nonce), and a
+// rotating opaque refresh token joined to `family`. row already carries the
+// grant identity (Owner/Application/User/Scope/Nonce). It is the single path
+// both the code grant and refresh rotation mint through, so the token shape can
+// never drift between them.
+func issueTokens(ctx context.Context, db orm.DB, c *zip.Ctx, app *schema.Application, row *schema.Token, family string, now time.Time) (tokenResponse, error) {
+	ttl := appTTL(app)
+	signer, err := signerFor(ctx, db, app, tokenIssuer(c))
+	if err != nil {
+		return tokenResponse{}, err
+	}
+	email, name := userProfile(ctx, db, row.User)
+
+	access, err := signer.Sign(app, row.User, email, name, row.Scope, ttl, now)
+	if err != nil {
+		return tokenResponse{}, err
+	}
+	refresh, err := newOpaqueToken()
+	if err != nil {
+		return tokenResponse{}, err
+	}
+
+	// Persist only the SHA-256 hashes, never the reusable plaintext tokens: a
+	// database dump then exposes no usable bearer or refresh credential. Lookups
+	// (userinfo, refresh) go through the hash siblings.
+	row.AccessToken = ""
+	row.AccessTokenHash = hashToken(access)
+	row.RefreshToken = ""
+	row.RefreshTokenHash = hashToken(refresh)
+	row.RefreshFamily = family
+	row.RefreshConsumed = false
+	row.RefreshExpireIn = now.Add(refreshTTL(app)).Unix()
+	row.ExpiresIn = int(ttl.Seconds())
+	row.TokenType = "Bearer"
+
+	resp := tokenResponse{
+		AccessToken:  access,
+		RefreshToken: refresh,
+		TokenType:    "Bearer",
+		ExpiresIn:    int(ttl.Seconds()),
+		Scope:        row.Scope,
+	}
+	if hasScope(row.Scope, "openid") {
+		idt, err := signer.SignID(app, row.User, email, name, row.Scope, row.Nonce, ttl, now)
+		if err != nil {
+			return tokenResponse{}, err
+		}
+		resp.IdToken = idt
+	}
+	return resp, nil
+}
+
+// clientAuth extracts client credentials, preferring client_secret_post (body /
+// query) and falling back to client_secret_basic (Authorization: Basic).
+func clientAuth(c *zip.Ctx) (id, secret string) {
+	id, secret = param(c, "client_id"), param(c, "client_secret")
+	if id != "" {
+		return id, secret
+	}
+	if bid, bsecret, ok := parseBasicAuth(c.Header("Authorization")); ok {
+		return bid, bsecret
+	}
+	return id, secret
+}
+
+// parseBasicAuth decodes an HTTP Basic client-authentication header. Per RFC
+// 6749 §2.3.1 the id and secret are form-urlencoded before base64.
+func parseBasicAuth(header string) (id, secret string, ok bool) {
+	const p = "Basic "
+	if len(header) <= len(p) || !strings.EqualFold(header[:len(p)], p) {
+		return "", "", false
+	}
+	raw, err := base64.StdEncoding.DecodeString(strings.TrimSpace(header[len(p):]))
+	if err != nil {
+		return "", "", false
+	}
+	idPart, secretPart, found := strings.Cut(string(raw), ":")
+	if !found {
+		return "", "", false
+	}
+	if u, err := url.QueryUnescape(idPart); err == nil {
+		idPart = u
+	}
+	if u, err := url.QueryUnescape(secretPart); err == nil {
+		secretPart = u
+	}
+	return idPart, secretPart, true
+}
+
+// resolveTokenApp loads the application a token row belongs to. Returns (nil,nil)
+// for an unknown code so the handler answers invalid_grant without leaking which
+// of code/app was missing.
+func resolveTokenApp(ctx context.Context, db orm.DB, tok *schema.Token) (*schema.Application, error) {
+	if tok == nil {
+		return nil, nil
+	}
+	return store.GetApplicationByName(ctx, db, tok.Owner, tok.Application)
+}
+
+// appTTL is the access-token lifetime for an app (ExpireInHours, default 1h).
+func appTTL(app *schema.Application) time.Duration {
+	if app.ExpireInHours > 0 {
+		return time.Duration(app.ExpireInHours * float64(time.Hour))
+	}
+	return time.Hour
+}
+
+// refreshTTL is the refresh-token lifetime (RefreshExpireInHours); when unset it
+// clamps to the access-token lifetime, matching v1.
+func refreshTTL(app *schema.Application) time.Duration {
+	if app.RefreshExpireInHours > 0 {
+		return time.Duration(app.RefreshExpireInHours * float64(time.Hour))
+	}
+	return appTTL(app)
+}
+
+// signerFor loads the application's signing cert from the trusted platform
+// signing-cert owners and builds a Signer with the given canonical issuer. Using
+// the same trusted resolution as the JWKS and verification keeps the three
+// consistent: a token is signed by a key iam2 will also publish and verify.
+func signerFor(ctx context.Context, db orm.DB, app *schema.Application, issuer string) (*Signer, error) {
+	cert, err := store.GetSigningCert(ctx, db, app.Cert)
+	if err != nil {
+		return nil, err
+	}
+	if cert == nil {
+		return nil, errors.New("token: application has no trusted signing cert")
+	}
+	return NewSignerFromCert(cert, app, issuer)
+}
+
+// signAccessToken signs a bare access token for a token row under the given
+// issuer — the direct sign path the end-to-end test drives.
+func signAccessToken(ctx context.Context, db orm.DB, app *schema.Application, tok *schema.Token, issuer string, ttl time.Duration, now time.Time) (string, error) {
+	signer, err := signerFor(ctx, db, app, issuer)
+	if err != nil {
+		return "", err
+	}
+	return signer.Sign(app, tok.User, "", "", tok.Scope, ttl, now)
+}
+
+// tokenIssuer is the canonical OIDC issuer for this request — the value discovery
+// advertises and every token carries as `iss`. A deployment PINS it with the
+// IAM_ISSUER env (e.g. `https://hanzo.id`): the embedded KMS + every resource
+// server validate `iss` against a fixed expected value, so a hanzo deployment
+// serving both `hanzo.id` and `iam.hanzo.ai` must emit ONE stable issuer, not a
+// host-derived one. Pinning also closes the header-influenced-iss vector (a
+// request's X-Forwarded-Host can no longer steer `iss`). Unset → host-relative
+// (dev / multi-tenant), so discovery stays split-origin-safe when no pin applies.
+func tokenIssuer(c *zip.Ctx) string {
+	if iss := strings.TrimSpace(os.Getenv("IAM_ISSUER")); iss != "" {
+		return strings.TrimRight(iss, "/")
+	}
+	if h := httpx.EffectiveHost(c); h != "" {
+		return "https://" + h
+	}
+	return "https://hanzo.id"
+}
+
+// userProfile loads a user's email and display name for the token claims.
+func userProfile(ctx context.Context, db orm.DB, userID string) (email, name string) {
+	owner, uname := splitSub(userID)
+	if owner == "" || uname == "" {
+		return "", ""
+	}
+	u, err := store.GetUserByName(ctx, db, owner, uname)
+	if err != nil || u == nil {
+		return "", ""
+	}
+	name = u.DisplayName
+	if name == "" {
+		name = u.Name
+	}
+	return u.Email, name
+}
+
+// splitSub splits a subject "owner/name" into its two parts.
+func splitSub(sub string) (owner, name string) {
+	owner, name, _ = strings.Cut(sub, "/")
+	return owner, name
+}
+
+// hashToken is the SHA-256 hex digest used to index a stored token by a
+// presented bearer/refresh string without keeping the plaintext on the lookup
+// path.
+func hashToken(s string) string {
+	sum := sha256.Sum256([]byte(s))
+	return hex.EncodeToString(sum[:])
+}
+
+// hasScope reports whether a space-delimited scope string contains want.
+func hasScope(scope, want string) bool {
+	for _, s := range strings.Fields(scope) {
+		if s == want {
+			return true
+		}
+	}
+	return false
+}
+
+// newFamilyID derives a stable refresh-family id for a fresh grant from the
+// code row's identity — the anchor every rotation of this grant shares.
+func newFamilyID(tok *schema.Token) string {
+	return tok.Owner + "/" + tok.Name
+}
+
+// isInternalApp reports whether an application is an internal service identity
+// (<org>-iam), which may never obtain a token on the public token endpoint.
+func isInternalApp(app *schema.Application) bool {
+	return strings.HasSuffix(app.Name, "-iam")
+}
+
+// redeemErrToResponse maps a RedeemCode error to the RFC 6749 error body.
+func redeemErrToResponse(c *zip.Ctx, err error) error {
+	switch err {
+	case ErrCodeUsed:
+		return tokenError(c, 400, "invalid_grant", "authorization code already used")
+	case ErrCodeExpired:
+		return tokenError(c, 400, "invalid_grant", "authorization code expired")
+	case ErrClientMismatch:
+		return tokenError(c, 400, "invalid_grant", "client mismatch")
+	case ErrPKCEMismatch, ErrPKCEMissing, ErrPKCEPlainRejected:
+		return tokenError(c, 400, "invalid_grant", "PKCE verification failed")
+	case ErrCodeUnknown:
+		return tokenError(c, 400, "invalid_grant", "invalid authorization code")
+	default:
+		return tokenError(c, 400, "invalid_grant", "authorization code rejected")
+	}
+}

internal/oidc/token_e2e_test.go

@@ -0,0 +1,141 @@
+// Copyright 2026 Hanzo AI, Inc. All rights reserved.
+
+package oidc
+
+import (
+	"context"
+	"crypto/rsa"
+	"os"
+	"path/filepath"
+	"testing"
+	"time"
+
+	"github.com/golang-jwt/jwt/v5"
+
+	"github.com/hanzoai/orm"
+	ormdb "github.com/hanzoai/orm/db"
+
+	"github.com/hanzoai/iam/internal/schema"
+	"github.com/hanzoai/iam/internal/store"
+)
+
+// openTestDB opens a fresh SQLite store; the schema init registers the kinds.
+func openTestDB(t *testing.T) orm.DB {
+	t.Helper()
+	_ = schema.Kinds() // force the schema package init() (kind registration)
+	dir := t.TempDir()
+	db, err := orm.OpenSQLite(&ormdb.SQLiteDBConfig{
+		Path:   filepath.Join(dir, "iam2test.db"),
+		Config: ormdb.SQLiteConfig{BusyTimeout: 5000, JournalMode: "WAL"},
+	})
+	if err != nil {
+		t.Fatalf("open sqlite: %v", err)
+	}
+	t.Cleanup(func() { _ = db.Close() })
+	return db
+}
+
+// seedAppWithCert creates a confidential app (hanzo-console) + its RSA cert.
+func seedAppWithCert(t *testing.T, db orm.DB, key *rsa.PrivateKey) *schema.Application {
+	t.Helper()
+	ctx := context.Background()
+
+	// Cert row with a PEM RSA private key.
+	c := orm.New[schema.Cert](db)
+	c.Owner = "admin"
+	c.Name = "cert-hanzo"
+	c.CryptoAlgorithm = "RS256"
+	c.PrivateKey = rsaKeyToPEM(t, key)
+	c.SetId("admin/cert-hanzo")
+	if err := c.CreateCtx(ctx); err != nil {
+		t.Fatalf("seed cert: %v", err)
+	}
+
+	a := orm.New[schema.Application](db)
+	a.Owner = "admin"
+	a.Name = "hanzo-console"
+	a.ClientId = "hanzo-console"
+	a.ClientSecret = "" // public client (PKCE) for this test
+	a.Organization = "hanzo"
+	a.Cert = "cert-hanzo"
+	a.EnablePassword = true
+	a.ExpireInHours = 1
+	a.SetId("admin/hanzo-console")
+	if err := a.CreateCtx(ctx); err != nil {
+		t.Fatalf("seed app: %v", err)
+	}
+	return a
+}
+
+// TestTokenExchange_EndToEnd mints an authorization code (authorize side),
+// persists it, then redeems it through the exchange path and verifies the signed
+// JWT. Proves the full code→token flow over a real store, and that replay fails.
+func TestTokenExchange_EndToEnd(t *testing.T) {
+	db := openTestDB(t)
+	key := mustGenRSA(t)
+	app := seedAppWithCert(t, db, key)
+	ctx := context.Background()
+	now := time.Unix(1_800_000_000, 0)
+
+	// --- authorize side: mint a PKCE-bound code and persist it ---
+	verifier := "e2e-verifier-000000000000000000000000000000000000"
+	code, err := MintCode(app, "hanzo/alice", "openid profile", ComputeS256Challenge(verifier), "S256", "", now)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if err := store.PersistToken(ctx, db, code); err != nil {
+		t.Fatalf("persist code: %v", err)
+	}
+
+	// --- token side: redeem via the same guards the handler uses ---
+	got, err := store.GetTokenByCode(ctx, db, code.Code)
+	if err != nil || got == nil {
+		t.Fatalf("get by code: %v (nil=%v)", err, got == nil)
+	}
+	if err := RedeemCode(got, app.Name, verifier, now.Add(time.Second)); err != nil {
+		t.Fatalf("redeem: %v", err)
+	}
+	ttl := appTTL(app)
+	if err := IssueAccessToken(got, int(ttl.Seconds()), now); err != nil {
+		t.Fatal(err)
+	}
+	signed, err := signAccessToken(ctx, db, app, got, "https://iam.hanzo.ai", ttl, now)
+	if err != nil {
+		t.Fatalf("sign: %v", err)
+	}
+	if err := store.SaveToken(ctx, db, got); err != nil {
+		t.Fatalf("save: %v", err)
+	}
+
+	// The signed JWT verifies under the cert key with the right claims.
+	var claims Claims
+	pub := &key.PublicKey
+	parsed, err := jwt.ParseWithClaims(signed, &claims, func(*jwt.Token) (any, error) { return pub, nil },
+		jwt.WithValidMethods([]string{"RS256"}), jwt.WithTimeFunc(func() time.Time { return now.Add(time.Minute) }))
+	if err != nil || !parsed.Valid {
+		t.Fatalf("verify signed token: %v", err)
+	}
+	if claims.Subject != "hanzo/alice" || claims.Owner != "hanzo" ||
+		len(claims.Audience) != 1 || claims.Audience[0] != "hanzo-console" {
+		t.Fatalf("claims wrong: sub=%q owner=%q aud=%v", claims.Subject, claims.Owner, claims.Audience)
+	}
+
+	// --- replay: the persisted code is now used; a second redeem fails ---
+	again, _ := store.GetTokenByCode(ctx, db, code.Code)
+	if err := RedeemCode(again, app.Name, verifier, now.Add(2*time.Second)); err != ErrCodeUsed {
+		t.Fatalf("replay after persist: got %v, want ErrCodeUsed", err)
+	}
+}
+
+// --- helpers ---
+
+func mustGenRSA(t *testing.T) *rsa.PrivateKey {
+	t.Helper()
+	k, err := rsaGenTest()
+	if err != nil {
+		t.Fatal(err)
+	}
+	return k
+}
+
+func TestMain(m *testing.M) { os.Exit(m.Run()) }

internal/oidc/token_exchange.go

@@ -0,0 +1,146 @@
+// Copyright 2026 Hanzo AI, Inc. All rights reserved.
+
+package oidc
+
+import (
+	"crypto/subtle"
+
+	"github.com/hanzoai/orm"
+	"github.com/zap-proto/zip"
+
+	"github.com/hanzoai/iam/internal/schema"
+	"github.com/hanzoai/iam/internal/store"
+)
+
+// RFC 8693 OAuth 2.0 Token Exchange — the standard delegation / act-on-behalf-of
+// flow, and the replacement for the Casdoor `issue-user-token` verb (HIP-0111).
+// A trusted, allow-listed confidential client presents a `subject_token`
+// identifying the end user it acts for and receives a fresh access token bound to
+// that user and re-scoped (RFC 8707 `resource`/`audience`) to a downstream
+// resource server — indistinguishable from a token the user obtained directly, so
+// a BFF can forward it and the resource server scopes on the validated `owner`.
+//
+// It reuses the same red-hardened controls as the other on-behalf-of primitives:
+// the mint allow-list is matched by the globally-unique clientId ONLY, acting for
+// a reserved-org (`admin`/`built-in`) subject needs the separate admin capability,
+// and every exchange is audit-logged.
+
+const (
+	grantTypeTokenExchange   = "urn:ietf:params:oauth:grant-type:token-exchange"
+	tokenTypeAccessToken     = "urn:ietf:params:oauth:token-type:access_token"
+	subjectTokenTypeAccess   = "urn:ietf:params:oauth:token-type:access_token"
+	subjectTokenTypeIDToken  = "urn:ietf:params:oauth:token-type:id_token"
+	subjectTokenTypeJWTToken = "urn:ietf:params:oauth:token-type:jwt"
+)
+
+// tokenExchangeGrant handles grant_type=urn:ietf:params:oauth:grant-type:token-exchange.
+func tokenExchangeGrant(c *zip.Ctx, db orm.DB) error {
+	ctx := c.Context()
+	now := nowFunc()
+
+	// 1) Authenticate the acting client and enforce the exchange capability. A
+	//    public client can never exchange; the allow-list is keyed on clientId only.
+	clientID, clientSecret := clientAuth(c)
+	if clientID == "" {
+		return tokenErrorClient(c, "client authentication required")
+	}
+	clientApp, err := store.GetApplicationByClientId(ctx, db, clientID)
+	if err != nil {
+		return tokenError(c, 500, "server_error", "")
+	}
+	if clientApp == nil || clientApp.ClientSecret == "" ||
+		subtle.ConstantTimeCompare([]byte(clientSecret), []byte(clientApp.ClientSecret)) != 1 {
+		return tokenErrorClient(c, "client authentication failed")
+	}
+	if !mintAllowed(clientApp.ClientId) {
+		return tokenError(c, 403, "unauthorized_client", "client is not permitted for token exchange")
+	}
+
+	// 2) The subject_token identifies the user to act for (RFC 8693 §2.1, required).
+	//    Its type, if given, must be a token type we verify.
+	subjectToken := param(c, "subject_token")
+	if subjectToken == "" {
+		return tokenError(c, 400, "invalid_request", "subject_token is required")
+	}
+	if st := param(c, "subject_token_type"); st != "" &&
+		st != subjectTokenTypeAccess && st != subjectTokenTypeIDToken && st != subjectTokenTypeJWTToken {
+		return tokenError(c, 400, "invalid_request", "unsupported subject_token_type")
+	}
+	claims, err := verifyToken(ctx, db, subjectToken)
+	if err != nil {
+		return tokenError(c, 400, "invalid_grant", "subject_token is invalid or expired")
+	}
+	owner, name := splitSub(claims.Subject)
+	if owner == "" || name == "" {
+		return tokenError(c, 400, "invalid_grant", "subject_token carries no subject")
+	}
+	user, err := store.GetUserByName(ctx, db, owner, name)
+	if err != nil {
+		return tokenError(c, 500, "server_error", "")
+	}
+	if user == nil || user.IsForbidden || user.IsDeleted {
+		return tokenError(c, 400, "invalid_grant", "the subject is unknown or forbidden")
+	}
+
+	// 3) A reserved-org (admin/built-in) subject is a cross-tenant / SuperAdmin
+	//    identity — gate it behind the separate admin-exchange capability.
+	if store.IsSigningCertOwner(owner) && !adminMintAllowed(clientApp.ClientId) {
+		return tokenError(c, 403, "access_denied", "not permitted to act for a reserved-org subject")
+	}
+
+	// 4) The requested audience (RFC 8707) — resource wins, then audience, else the
+	//    subject's own app. requested_token_type, if given, must be an access token.
+	if rt := param(c, "requested_token_type"); rt != "" && rt != tokenTypeAccessToken {
+		return tokenError(c, 400, "invalid_request", "only an access_token may be requested")
+	}
+	aud := param(c, "resource")
+	if aud == "" {
+		aud = param(c, "audience")
+	}
+	if aud == "" {
+		aud = defaultUserAudience(ctx, db, user, clientApp)
+	}
+
+	// 5) Mint for the subject, scoped to the requested audience, azp = the acting
+	//    client (records who exchanged). Signed under the trusted cert + issuer.
+	signer, err := signerFor(ctx, db, clientApp, tokenIssuer(c))
+	if err != nil {
+		return tokenError(c, 500, "server_error", "")
+	}
+	ttl := appTTL(clientApp)
+	scope := param(c, "scope")
+	subject := owner + "/" + name
+	display := user.DisplayName
+	if display == "" {
+		display = user.Name
+	}
+	access, err := signer.SignUserToken(subject, owner, aud, clientApp.ClientId, user.Email, display, scope, ttl, now)
+	if err != nil {
+		return tokenError(c, 500, "server_error", "")
+	}
+
+	row := &schema.Token{
+		Owner:           owner,
+		Application:     clientApp.Name,
+		Organization:    owner,
+		User:            subject,
+		Scope:           scope,
+		TokenType:       "Bearer",
+		ExpiresIn:       int(ttl.Seconds()),
+		AccessTokenHash: hashToken(access),
+	}
+	row.Name = "tx-" + hashToken(access)[:32]
+	if err := store.PersistToken(ctx, db, row); err != nil {
+		return tokenError(c, 500, "server_error", "")
+	}
+	auditMint(ctx, db, c, "token-exchange", clientApp.ClientId, subject)
+
+	// 6) RFC 8693 §2.2 response.
+	return c.JSON(200, map[string]any{
+		"access_token":      access,
+		"issued_token_type": tokenTypeAccessToken,
+		"token_type":        "Bearer",
+		"expires_in":        int(ttl.Seconds()),
+		"scope":             scope,
+	})
+}

internal/oidc/token_exchange_test.go

@@ -0,0 +1,215 @@
+// Copyright 2026 Hanzo AI, Inc. All rights reserved.
+
+package oidc
+
+import (
+	"context"
+	"net/url"
+	"testing"
+
+	"github.com/hanzoai/orm"
+	"github.com/zap-proto/zip"
+
+	"github.com/hanzoai/iam/internal/schema"
+)
+
+// RFC 8693 Token Exchange — the standard on-behalf-of flow (replaces the retired
+// issue-user-token verb). An allow-listed confidential client presents a valid
+// subject_token and receives a token bound to that subject, re-scoped to a
+// downstream resource. These tests pin the happy path AND every red-hardened
+// control: the allow-list is clientId-only (the closed CRITICAL), a reserved-org
+// subject needs the separate admin capability, public clients are refused, and an
+// invalid subject_token yields invalid_grant.
+
+// exchange posts a token-exchange grant as the confidential client (basic auth).
+func exchange(t *testing.T, app *zip.App, clientID, secret string, extra url.Values) (int, map[string]any) {
+	t.Helper()
+	form := url.Values{
+		"grant_type":    {grantTypeTokenExchange},
+		"client_id":     {clientID},
+		"client_secret": {secret},
+	}
+	for k, v := range extra {
+		form[k] = v
+	}
+	resp, body := do(t, app, formReq("POST", PathToken, form))
+	return resp.StatusCode, decode(t, body)
+}
+
+// subjectTokenFor mints a real access token for (org, name) via the password
+// grant through `viaClient` — a valid subject_token an exchange can present.
+func subjectTokenFor(t *testing.T, app *zip.App, viaClient, secret, org, username, password string) string {
+	t.Helper()
+	_, tok := postToken(t, app, url.Values{
+		"grant_type":    {"password"},
+		"client_id":     {viaClient},
+		"client_secret": {secret},
+		"organization":  {org},
+		"username":      {username},
+		"password":      {password},
+		"scope":         {"openid profile"},
+	})
+	st, _ := tok["access_token"].(string)
+	if st == "" {
+		t.Fatalf("could not mint a subject_token; body=%v", tok)
+	}
+	return st
+}
+
+func TestTokenExchange_mintsForSubject(t *testing.T) {
+	t.Setenv("IAM_KEY_MINT_ALLOWED_APPS", "hanzo-console")
+	app, db := newServer(t)
+	seedApp(t, db, appOpts{clientID: "hanzo-console", secret: "top-secret"})
+	seedUser(t, db, "alice", "alice@hanzo.ai", "correct horse")
+	subject := subjectTokenFor(t, app, "hanzo-console", "top-secret", "hanzo", "alice@hanzo.ai", "correct horse")
+
+	status, tok := exchange(t, app, "hanzo-console", "top-secret", url.Values{
+		"subject_token":      {subject},
+		"subject_token_type": {subjectTokenTypeAccess},
+		"resource":           {"hanzo-cloud"},
+	})
+	if status != 200 {
+		t.Fatalf("status = %d; body=%v", status, tok)
+	}
+	if tok["issued_token_type"] != tokenTypeAccessToken {
+		t.Errorf("issued_token_type = %v, want %s", tok["issued_token_type"], tokenTypeAccessToken)
+	}
+	access, _ := tok["access_token"].(string)
+	if access == "" {
+		t.Fatalf("no access_token; body=%v", tok)
+	}
+	claims, err := verifyToken(context.Background(), db, access)
+	if err != nil {
+		t.Fatalf("exchanged token does not verify: %v", err)
+	}
+	if claims.Subject != "hanzo/alice" || claims.Owner != "hanzo" {
+		t.Errorf("subject/owner = %q/%q, want hanzo/alice / hanzo", claims.Subject, claims.Owner)
+	}
+	if claims.Azp != "hanzo-console" {
+		t.Errorf("azp = %q, want hanzo-console (the acting client)", claims.Azp)
+	}
+	// The RFC 8707 resource became the aud.
+	audOK := false
+	for _, a := range claims.Audience {
+		if a == "hanzo-cloud" {
+			audOK = true
+		}
+	}
+	if !audOK {
+		t.Errorf("aud = %v, want it to contain the requested resource hanzo-cloud", claims.Audience)
+	}
+}
+
+func TestTokenExchange_notAllowlisted_403(t *testing.T) {
+	t.Setenv("IAM_KEY_MINT_ALLOWED_APPS", "some-other-app")
+	app, db := newServer(t)
+	seedApp(t, db, appOpts{clientID: "hanzo-console", secret: "top-secret"})
+	seedUser(t, db, "alice", "alice@hanzo.ai", "correct horse")
+	subject := subjectTokenFor(t, app, "hanzo-console", "top-secret", "hanzo", "alice@hanzo.ai", "correct horse")
+
+	// hanzo-console holds a valid subject_token but is off the exchange allow-list.
+	status, _ := exchange(t, app, "hanzo-console", "top-secret", url.Values{"subject_token": {subject}})
+	if status != 403 {
+		t.Fatalf("off-allow-list exchange status = %d, want 403", status)
+	}
+}
+
+// TestTokenExchange_nameCollisionAttacker_403 is the regression guard for the
+// closed CRITICAL: an attacker app named like the console but with the attacker's
+// OWN clientId is refused at the allow-list (matched by clientId only), even though
+// it holds a valid subject_token for its own tenant user.
+func TestTokenExchange_nameCollisionAttacker_403(t *testing.T) {
+	t.Setenv("IAM_KEY_MINT_ALLOWED_APPS", "hanzo-console")
+	app, db := newServer(t)
+	seedApp(t, db, appOpts{clientID: "hanzo-console", secret: "top-secret"})
+	// Attacker: a DIFFERENT clientId, but NAME collides with the allow-listed one.
+	seedAttackerApp(t, db, "evil", "hanzo-console", "evil-pwn", "attacker-knows-this", "cert-hanzo-console")
+	seedUser(t, db, "alice", "alice@hanzo.ai", "correct horse")
+	subject := subjectTokenFor(t, app, "hanzo-console", "top-secret", "hanzo", "alice@hanzo.ai", "correct horse")
+
+	status, body := exchange(t, app, "evil-pwn", "attacker-knows-this", url.Values{
+		"subject_token": {subject},
+		"resource":      {"hanzo-cloud"},
+	})
+	if status != 403 {
+		t.Fatalf("PRIV-ESC REOPENED: name-collision client admitted (status=%d) — allow-list must key on clientId only; body=%v", status, body)
+	}
+}
+
+func TestTokenExchange_reservedOrgSubject_requiresAdminCapability(t *testing.T) {
+	t.Setenv("IAM_KEY_MINT_ALLOWED_APPS", "hanzo-console") // general only
+	app, db := newServer(t)
+	seedApp(t, db, appOpts{clientID: "hanzo-console", secret: "top-secret"})
+	// An admin-org user with a password, so we can mint their subject_token.
+	seedUserInOrg(t, db, "admin", "root", "root@hanzo.ai", "admin pw")
+	subject := subjectTokenFor(t, app, "hanzo-console", "top-secret", "admin", "root@hanzo.ai", "admin pw")
+
+	status, _ := exchange(t, app, "hanzo-console", "top-secret", url.Values{
+		"subject_token": {subject},
+		"resource":      {"hanzo-cloud"},
+	})
+	if status != 403 {
+		t.Fatalf("reserved-org exchange without admin capability status = %d, want 403", status)
+	}
+}
+
+func TestTokenExchange_reservedOrgSubject_admitsWithAdminCapability(t *testing.T) {
+	t.Setenv("IAM_KEY_MINT_ALLOWED_APPS", "hanzo-console")
+	t.Setenv("IAM_ADMIN_MINT_ALLOWED_APPS", "hanzo-console")
+	app, db := newServer(t)
+	seedApp(t, db, appOpts{clientID: "hanzo-console", secret: "top-secret"})
+	seedUserInOrg(t, db, "admin", "root", "root@hanzo.ai", "admin pw")
+	subject := subjectTokenFor(t, app, "hanzo-console", "top-secret", "admin", "root@hanzo.ai", "admin pw")
+
+	status, tok := exchange(t, app, "hanzo-console", "top-secret", url.Values{
+		"subject_token": {subject},
+		"resource":      {"hanzo-cloud"},
+	})
+	if status != 200 {
+		t.Fatalf("legit admin exchange status = %d; body=%v", status, tok)
+	}
+	if access, _ := tok["access_token"].(string); access == "" {
+		t.Fatalf("no admin token minted; body=%v", tok)
+	}
+}
+
+func TestTokenExchange_invalidSubjectToken_invalidGrant(t *testing.T) {
+	t.Setenv("IAM_KEY_MINT_ALLOWED_APPS", "hanzo-console")
+	app, db := newServer(t)
+	seedApp(t, db, appOpts{clientID: "hanzo-console", secret: "top-secret"})
+
+	status, tok := exchange(t, app, "hanzo-console", "top-secret", url.Values{"subject_token": {"garbage.not.a.jwt"}})
+	if status != 400 || tok["error"] != "invalid_grant" {
+		t.Fatalf("invalid subject_token → status=%d error=%v, want 400 invalid_grant", status, tok["error"])
+	}
+}
+
+func TestTokenExchange_publicClient_rejected(t *testing.T) {
+	t.Setenv("IAM_KEY_MINT_ALLOWED_APPS", "pub")
+	app, db := newServer(t)
+	seedApp(t, db, appOpts{clientID: "pub"}) // no secret → public
+	seedUser(t, db, "alice", "alice@hanzo.ai", "correct horse")
+
+	status, _ := exchange(t, app, "pub", "", url.Values{"subject_token": {"x"}})
+	if status != 401 {
+		t.Fatalf("public-client exchange status = %d, want 401", status)
+	}
+}
+
+func TestTokenExchange_emitsAudit(t *testing.T) {
+	t.Setenv("IAM_KEY_MINT_ALLOWED_APPS", "hanzo-console")
+	app, db := newServer(t)
+	seedApp(t, db, appOpts{clientID: "hanzo-console", secret: "top-secret"})
+	seedUser(t, db, "alice", "alice@hanzo.ai", "correct horse")
+	subject := subjectTokenFor(t, app, "hanzo-console", "top-secret", "hanzo", "alice@hanzo.ai", "correct horse")
+
+	exchange(t, app, "hanzo-console", "top-secret", url.Values{"subject_token": {subject}, "resource": {"hanzo-cloud"}})
+
+	logs, err := orm.TypedQuery[schema.AuditLog](db).Filter("Action=", "token-exchange").GetAll(context.Background())
+	if err != nil {
+		t.Fatalf("query audit: %v", err)
+	}
+	if len(logs) != 1 || logs[0].User != "hanzo/alice" || logs[0].Object != "hanzo-console" {
+		t.Fatalf("token-exchange audit = %+v, want one row {user:hanzo/alice, minter:hanzo-console}", logs)
+	}
+}