feat: add Robinhood Chain (4663) support

[fichiokaku]

What

Adds Robinhood Chain mainnet (Arbitrum Orbit / Nitro, chain id 4663, ETH gas token) to the node, following the same pattern as previous chain integrations (katana #, megaeth):

• src/modules/chains/constants.ts: robinhoodChain viem chain definition (not yet in our viem version) added to CHAIN_DEFINITIONS
• k8s/values.prod.yaml: supported_chains.robinhood (gcpsecretkey prd-mee-mode-robinhood-config) + nodeEnabledChains entries for both node deployments
• .github/workflows/prd-refresh-secrets-restart.yml: mee-node-robinhood-4663-configs added to the refresh list

Feasibility (verified live against the chain)

• eth_feeHistory, eth_call state+bytecode overrides, Cancun (TSTORE/TLOAD/MCOPY): all working
• debug_traceCall is NOT exposed on the official public RPC - the chain config MUST use a provider with debug support (QuickNode/dRPC paid tiers carry this chain)
• EntryPoint v0.7, CREATE2 proxy, CreateX, Multicall3 pre-deployed
• Chainlink is the chain's official day-one oracle; ETH/USD feed live at 0x78F3556b67E17Df817D51Ef5a990cDaF09E8d3A9 (8 decimals, 0.5%/24h)

Contracts

Current-gen stx suite deployed and verified on 4663 (standard addresses: Nexus 0x0000b1C0B95D..., factory 0x0000B1c0dCFd..., NodePaymasterFactory 0x0000B1C05975... etc). v2.2.1 suite deployment is prepared and pending a go-ahead.

Chain config (to be added manually in GCP Secret Manager as prd-mee-mode-robinhood-config)

Suggested, mirroring Arbitrum One (type: arbitrum reuses the ArbGasInfo L1-fee path) but pricing via the chain-local Chainlink feed:

{
  "name": "Robinhood Chain",
  "rpcs": ["<provider RPC with debug_traceCall>"],
  "isTestChain": false,
  "chainId": "4663",
  "type": "arbitrum",
  "eip1559": true,
  "price": { "chainId": "4663", "oracle": "0x78F3556b67E17Df817D51Ef5a990cDaF09E8d3A9" },
  "paymasterFunding": "0.01",
  "paymasterFundingThreshold": "0.001",
  "executor": { "workerCount": 3, "workerFunding": "0.001", "workerFundingThreshold": "0.0005" },
  "batcher": { "batchGasLimit": "16000000" },
  "paymentTokens": [
    { "name": "ETH", "address": "0x0000000000000000000000000000000000000000", "symbol": "ETH", "decimals": 18,
      "price": { "chainId": "4663", "oracle": "0x78F3556b67E17Df817D51Ef5a990cDaF09E8d3A9" } }
  ]
}

Checklist before activation

• GSM secret prd-mee-mode-robinhood-config created (manual, with debug-capable RPC)
• Master EOA + workers funded with ETH on 4663
• v2.2.1 suite deployed (pending approval)
• mee-indexer SUPPORTED_CHAINS entry (separate repo)

[fichiokaku]

Added Robinhood to the token-storage-detection service as well (Chain enum + chain id mapping). Activation is env-side: set ROBINHOOD_RPC (or ROBINHOOD_FORK_RPC) in the prd-token-storage-detection-env secret - chains without the env var are skipped, so this is inert until configured. Also verified the provisioned RPC_4663 endpoint supports debug_traceCall with callTracer + stateOverrides (the exact simulator shape) - the config checklist item about a debug-capable RPC is satisfied by that provider. v2.2.1 suite is now deployed and verified on 4663 (factory 0x000000002c9A..., Nexus 0x0000000020fe2F..., K1 validator 0x0000000002d3cC..., bootstrap, forwarder, composability contracts, NodePaymasterFactory).