habit-streak/LLM.md

habit-streak — agent notes

A real Hanzo app: track daily habits, keep streaks, view a green calendar heatmap. Vite + React 19 + @hanzo/gui (UI) + @hanzo/iam (auth) + @hanzo/base (data). Keep it minimal and REAL — every surface must build and run, no fabricated UI or metrics.

One way, decomplected

• Providers (src/providers.tsx) mount in the canonical order every Hanzo surface ships: GuiProvider → IamProvider → BaseProvider. BaseProvider gets a BaseClient carrying the IAM access token; it is rebuilt when the token changes (src/lib/base.ts baseAs). That single seam is what makes every useQuery/useMutation org-scoped to the signed-in user.
• Env is one place (src/env.ts), read from import.meta.env.VITE_*.
• UI is one system — @hanzo/gui primitives only (no second kit, no Tailwind). Reusable pieces live in src/ui.tsx; the views are signed-out · home · today · detail · add.
• Domain math is pure (src/lib/habits.ts) — TZ-safe day ordinals; streaks and the heatmap are derived from real checkins rows, never faked. Data access is one seam (src/lib/data.ts: useHabits, useCheckins).

Gotchas (do not regress)

• @hanzo/gui under Vite needs three things in vite.config.ts (it is the Tamagui line; the in-browser builder runtime can't do this, which is the whole reason this ships as a real repo): (1) alias react-native → react-native-web, (2) define process.env.TAMAGUI_TARGET / NODE_ENV / __DEV__, (3) dedupe react/react-dom/react-native-web. No Tamagui compiler, no one, no Expo — the optimizer is a perf pass, not a correctness one.
• @hanzo/gui props are Tamagui LONGHAND with this v5 config: alignItems/justifyContent/backgroundColor/padding/alignSelf/ borderRadius/textAlign — NOT the items/justify/bg/p/self/ rounded/text shorthands. Shorthands pass at runtime but FAIL tsc. Button uses onPress and does not take a color prop — put text color on a SizableText child. Input uses value/onChangeText.
• PKCE storage is localStorage (not sessionStorage) so the verifier/state survive the round-trip to hanzo.id.
• schema.sql is the data contract. It is the databaseSchema DDL the deploy translates into Base collections (provisionBaseFromDDL). Keep it in lockstep with src/lib/habits.ts (Habit, Checkin) and src/lib/data.ts.

Deploy contract (Hanzo Cloud)

• Static SPA: npm run build → dist/, served at <slug>.hanzo.app from object storage (the *.hanzo.app published-sites edge). No server process.
• On publish, schema.sql → provisionBaseFromDDL creates the habits and checkins collections (org-scoped, IAM-native, rule @request.auth.org_id = org). Runtime read/write is browser → VITE_HANZO_BASE_URL with the IAM token.
• IAM redirect registration is the one external requirement: the IAM client (VITE_HANZO_CLIENT_ID, default hanzo-app) must allow this origin's /auth/callback. Production needs a https://*.hanzo.app/auth/callback wildcard on the shared client (or a per-app habit-streak client).

Proven

tsc --noEmit clean · vite build → dist/ · pure streak/heatmap math has unit assertions (18/18) · renders under headless Chrome with zero console errors · login() performs a real PKCE S256 redirect to hanzo.id.

Build

CI (.github/workflows/ci.yml) runs npm ci && npm run typecheck && npm run build — build-verification only, NEVER a container image (Hanzo Cloud owns deploys; do not build images locally).