feat(monday_trade): add MondayStockRouter contract address

[dak-agent]

What

Adds the MondayStockRouter contract to the existing mainnet/monday_trade.jsonc entry:

"MondayStockRouter": "0x2f903ac6ddaf57eadcbbc46adc3ad739c3506a2d"

Why / evidence

0x2f903ac6ddaf57eadcbbc46adc3ad739c3506a2d is a live, high-activity Monad-mainnet contract that resolves to Monday Trade:

• MonadVision/BlockVision labels it with the verified contract label "Monday Trade" / MondayStockRouter (verified, project logo attached).
• It is a TransparentUpgradeableProxy whose active implementation 0x7809a84486D1fdCb2997503C08E1f0D019D51936 is the same implementation used by the already-listed Monday Trade SwapRouter family; the impl bytecode contains WMON + USDC + Uniswap V2/V3/V4 swap selectors (a swap router).
• Surfaced as a top-active address in the activity-dashboard "unknown addresses" review and independently confirmed.

Validation

• python scripts/validate_protocol.py --network mainnet checks replicated locally: required fields present, categories valid, address format valid, no cross-file duplicate, and not a CANONICAL contract. ✅
• Aggregates (protocols-mainnet.json/.csv) are regenerated automatically by the generate-aggregates workflow on merge, so they are intentionally not touched here.

[github-actions]

Contract Verification Results

Changed Files

• mainnet/monday_trade.jsonc

Verification Output

Verifying 1 protocol file(s)...

  ✓ Monday Trade (11 addresses)

================================================================================
                         CONTRACT VERIFICATION RESULTS                          
================================================================================

✗ Monday Trade (monday_trade.jsonc)
  └─ ✗ MondayFactory: 0xC1e98D0A2a58fB8aBd10ccc30a58efff4080Aa21 [Not verified]
  └─ ✗ SwapRouter: 0xFE951b693A2FE54BE5148614B109E316B567632F [Not verified]
  └─ ✗ NFTPositionManager: 0x68b507BF58ED32173f41FF20aa2494A569daeC44 [Not verified]
  └─ ✗ QuoterV2: 0xB97eCD41Aef0F842E773C8F9905919cDE49880C9 [Not verified]
  └─ ✗ Aggregator: 0xAD8974D98f7fc386e396FFE826B886cf20AfE232 [Not verified]
  └─ ✓ Gate: 0x2e32345bf0592bff19313831b99900c530d37d90 [Verified]
  └─ ✓ Instrument: 0x73ada1ea346cc3908f41cf67a040f0acd7808be0 [Verified]
  └─ ✓ Instrument2: 0x44b60b6af9b615a5cf2d366e2143582557cff711 [Verified]
  └─ ✓ Instrument3: 0x8c5243a6a4c6c7a82d954c8ff29e0611e25ac33e [Verified]
  └─ ✗ MondayConfig3: 0xdc67221ea8d223e0a1d0948edecb634caf190ec9 [Not verified]
  └─ ✗ MondayStockRouter: 0x2f903ac6ddaf57eadcbbc46adc3ad739c3506a2d [Not verified]

================================================================================
                                    SUMMARY                                     
================================================================================
  Files Processed:     1
  Addresses Checked:   11
  ✓ Verified:          4
  ✗ Not Verified:      7
================================================================================

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_{Workflow run: Verify PR Contracts}