feat: add BrownFi protocol entry

[dak-agent]

BrownFi

Adds mainnet/brownfi.jsonc. BrownFi is an oracle-based (Pyth) AMM live on Monad — an alternative "proprietary AMM" curve offering concentrated-liquidity-level capital efficiency with reduced impermanent loss vs. constant-product AMMs.

Why

BrownFi routes on Monad via KyberSwap but is not yet in this repo. It hard-codes valueobject.ChainIDMonad in kyberswap-dex-lib:

• BrownFi V2 → Monad: KyberNetwork/kyberswap-dex-lib#1195
• BrownFi V3 (all chains, incl. Monad): KyberNetwork/kyberswap-dex-lib#1499

Addresses

Router addresses are taken from kyberswap-dex-lib's Monad config (brownfi/v2 and brownfi/v3 constant.go):

• RouterV2: 0xFaed28e0ffb1C07A2Aa7A41Ae03536dfC12B0db7 — verified on both MonadScan and MonadVision (source published).
• RouterV3 (0x43C08a1689e81EFF83bbAfA35617CcCf2EF463fD): commented out for now. Its source is not yet verified on MonadScan or MonadVision, so it's left as an easy-to-re-enable commented line in the .jsonc and can be added back once the BrownFi team verifies it.

Notes

• Stubbed by Monad Foundation from third-party (KyberSwap) integration data. The BrownFi team should verify and expand the address set (e.g. factories, price-oracle contracts, RouterV3) as needed.
• Validated locally: passes required-field, category, address-format, duplicate-address, and canonical-contract checks.

[github-actions]

Contract Verification Results

Changed Files

• mainnet/brownfi.jsonc

Verification Output

Verifying 1 protocol file(s)...

  ✓ BrownFi (2 addresses)

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

✗ BrownFi (brownfi.jsonc)
  └─ ✗ RouterV2: 0xFaed28e0ffb1C07A2Aa7A41Ae03536dfC12B0db7 [Not verified]
  └─ ✗ RouterV3: 0x43C08a1689e81EFF83bbAfA35617CcCf2EF463fD [Not verified]

================================================================================
                                    SUMMARY                                     
================================================================================
  Files Processed:     1
  Addresses Checked:   2
  ✓ Verified:          0
  ✗ Not Verified:      2
================================================================================

---

_{Workflow run: Verify PR Contracts}

[github-actions]

Contract Verification Results

Changed Files

• mainnet/brownfi.jsonc

Verification Output

Verifying 1 protocol file(s)...

  ✓ BrownFi (2 addresses)

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

✗ BrownFi (brownfi.jsonc)
  └─ ✓ RouterV2: 0xFaed28e0ffb1C07A2Aa7A41Ae03536dfC12B0db7 [Verified]
  └─ ✗ RouterV3: 0x43C08a1689e81EFF83bbAfA35617CcCf2EF463fD [Not verified]

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

---

_{Workflow run: Verify PR Contracts}

[github-actions]

Contract Verification Results

Changed Files

• mainnet/brownfi.jsonc

Verification Output

Verifying 1 protocol file(s)...

  ✓ BrownFi (1 addresses)

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

✓ BrownFi (brownfi.jsonc)

================================================================================
                                    SUMMARY                                     
================================================================================
  Files Processed:     1
  Addresses Checked:   1
  ✓ Verified:          1
  ✗ Not Verified:      0

  All contracts verified successfully!
================================================================================

---

_{Workflow run: Verify PR Contracts}