feat(chain): canonical Zoo L2 chain.yaml

Zoo is an L2 on the Lux primary network — rides Lux's validator
set via primary-network staking and does not own a sovereign
networkID. Zoo's identity surfaces through its EVM chainID + the
brand fields.

Model:
- network.parent = lux  → inherits Lux's networkID per env
- chains[*].evmChainIds.{mainnet,testnet,devnet} = {200200, 200201, 200202}
- Each chain gets its own chainID via CreateChainTx on Lux's P-chain

Per-env chainIDs sourced from
~/work/lux/genesis/configs/zoo-{env}/genesis.json — single source
of truth, no duplication in this manifest.

Lux primary L1 declares Zoo as an L2 child in its own chain.yaml.

chain.yaml

@@ -0,0 +1,84 @@
+version: "1"
+
+# Zoo L2 — child of the Lux primary network.
+#
+# Model:
+#   Zoo is an L2, not a sovereign L1. It rides Lux's validator set
+#   via primary-network staking. Zoo does NOT have its own
+#   `networkID` per env — it inherits the Lux networkID (1 / 2 / 3)
+#   and adds its own chain(s) via CreateChainTx on Lux's P-chain.
+#
+#   The Zoo brand identity surfaces through the chain's evmChainID
+#   (and chain name + Zoo logo/domain).
+#
+# Per-env Zoo EVM chainIDs are sourced from
+# ~/work/lux/genesis/configs/zoo-{mainnet,testnet,devnet}/genesis.json
+# (config.chainId field — single source of truth).
+#
+# To bootstrap a Zoo chain in an env:
+#   CreateChainTx(networkID=<lux env>, vmID=evm, genesis=<zoo-{env}/genesis.json>)
+# Returns Zoo's chainID (ids.ID); evmChainID is baked into the
+# genesis blob.
+
+network:
+  name: "Zoo"
+  slug: zoo
+  type: l2
+  # Parent IS the Lux primary L1. Zoo uses Lux's validator set;
+  # consensus and P-chain wire live on Lux.
+  parent: lux
+  dbType: zapdb
+  compression: zstd
+
+# L2 has no per-env primary networkID — it inherits its parent's
+# networkID (1/2/3 = lux mainnet/testnet/devnet). The per-env block
+# below only carries L2-side knobs (image tag, RPC URL).
+networks:
+  mainnet:
+    imageTag: "latest"
+    rpcUrl: "https://api.zoo.network"
+    wsUrl: "wss://api.zoo.network/ws"
+    snapshotInterval: 3600
+  testnet:
+    imageTag: "latest"
+    rpcUrl: "https://api.zoo-test.network"
+    snapshotInterval: 1800
+  devnet:
+    imageTag: "latest"
+    rpcUrl: "https://api.zoo-dev.network"
+
+# Zoo chains. Each gets its own chainID via CreateChainTx on Lux's
+# P-chain. evmChainIDs are baked into the chain's genesis blob and
+# match what the lqd/luxd binary advertises for `eth_chainId`.
+chains:
+  - name: zooEVM
+    vmType: evm
+    description: "Zoo EVM — DeAI / DeSci contract chain"
+    evmChainIds:
+      mainnet: 200200
+      testnet: 200201
+      devnet:  200202
+    rpcPath: "/ext/bc/zooEVM/rpc"
+    wsPath:  "/ext/bc/zooEVM/ws"
+    genesisFile: "~/work/lux/genesis/configs/zoo-{env}/genesis.json"
+
+token:
+  name: "Zoo"
+  symbol: "ZOO"
+  decimals: 18
+
+brand:
+  displayName: "Zoo"
+  legalEntity: "Zoo Labs Foundation"
+  primaryColor: "#16A34A"
+  logo: "./brand/zoo.svg"
+  domains:
+    explorer: "explorer.zoo.network"
+    docs: "docs.zoo.ngo"
+    rpc: "api.zoo.network"
+    main: "zoo.ngo"
+
+# Zoo inherits every Lux primary-network precompile via its parent.
+# Zoo-specific precompiles (if any) go here, addressed in Zoo's own
+# EVM at activation timestamps tracked per env.
+precompiles: []