[l0gun0v]

Add Codex (https://www.codex.xyz), an OP Stack L2 run by Conduit. This is not Open Campus Codex (open-campus-codex-sepolia).

Chains

• Mainnet: chain ID 81224 (0x13d48), grpcId 1182, RPC https://rpc-codex-mainnet-4s9qf7vr0k.t.conduit.xyz, explorer https://explorer.codex.xyz
• Testnet (settles on Sepolia): chain ID 812242 (0xc64d2), grpcId 10217, RPC https://rpc-codex-testnet-vmc5bxalmp.t.conduit.xyz, explorer https://explorer.codex-stg.xyz

Settings

• type: eth, validate-peers: false, lags 40 / 20, the same as the other OP Stack chains.
• expected-block-time: 2s: measured 200s over the last 100 blocks on both networks.
• lower-bounds: tx and receipts use the block 1 L1-attributes deposit tx (type 0x7e). Its receipt is served on both networks.
• Native currency is ETH (Sepolia ETH on testnet).

Verified locally against the Conduit RPCs:

• nodecore reports both chains as AVAILABLE/1 with all lower bounds at 1.
• dshackle reports both chains as status=[OK/1].

Files

File	Change
proto/common.proto, pkg/dshackle/common.pb.go	ChainRef 1182 / 10217 (protoc-gen-go v1.36.12, header unchanged)
chains.yaml	codex protocol, short names codex, codex-mainnet, codex-testnet
chains-meta.yaml	currency and explorers
icons/Codex.svg, icons/CodexDark.svg, icons/getChainIcon.ts	logo mark from Conduit's explorer favicon, with a white variant for dark mode

ChainRef values are mirrored in drpcorg/emerald-grpc#176: dshackle still compiles protos from there.

Stack: #296 → drpcorg/dproxy#3206, drpcorg/nodecore#440 → drpcorg/infra#5969; drpcorg/emerald-grpc#176 + public → drpcorg/dshackle#916.