feat(metamask): add Veda BoringVault for Money Account mUSD vault

[dak-agent]

Summary

Adds the mainnet contract address for the Veda BoringVault that powers MetaMask's Money Account (launched on Monad on June 30, 2026) to mainnet/metamask.jsonc.

Field	Value
Address	0x1C8a336051D2024E318A229d01F9F6CF96efD316
Token	mUSD Vault (vmUSD, 6 decimals)
Type	Veda BoringVault
Label	MoneyAccountVault

mUSD deposits into the Money Account are routed through this Veda vault into DeFi lending protocols (Morpho at launch, Aave to follow) to generate the ~4% APY.

Verification

• Contract is verified on-chain on Monad mainnet (chain 143); bytecode matches the Veda BoringVault pattern (manage hooks, teller/accountant beforeTransfer hook, permit, ERC-1155 receiver).
• ~4,560 holders, ~8.33M vmUSD outstanding at time of writing.
• A JSONC comment marks the entry as a Veda BoringVault.

Validation

python scripts/validate_protocol.py --network mainnet passes locally (address format valid, no duplicate/canonical-address collisions).

Sources: Monad blog — MetaMask Money Account launches on Monad, Veda docs.

[github-actions]

Contract Verification Results

Changed Files

• mainnet/metamask.jsonc

Verification Output

Verifying 1 protocol file(s)...

  ✓ Metamask (4 addresses)

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

✗ Metamask (metamask.jsonc)
  └─ ✗ Bridge: 0xfb00d4ea6f3f0d0b4a57b32378075df408f2aaba [Not verified]
  └─ ✗ swaps: 0x962287c9d5b8a682389e61edae90ec882325d08b [Not verified]
  └─ ✓ DelegationManager: 0xdb9B1e94B5b69Df7e401DDbedE43491141047dB3 [Verified]
  └─ ✓ MoneyAccountVault: 0x1C8a336051D2024E318A229d01F9F6CF96efD316 [Verified]

================================================================================
                                    SUMMARY                                     
================================================================================
  Files Processed:     1
  Addresses Checked:   4
  ✓ Verified:          2
  ✗ Not Verified:      2
================================================================================

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_{Workflow run: Verify PR Contracts}