Bridge

{
  "quote": { "route": "auto", "networkFee": "0.10", "estimatedOutAmount": "999.90", "etaSeconds": 30 },
  "ourFee": { "platformFee": "1.00", "gasFee": "0.05", "totalFee": "1.05" }
}

// 201
{
  "bridgeTransfer": {
    "id": "br_9f21…",
    "route": "auto",
    "fromChain": "SOLANA",
    "toChain": "BASE",
    "amount": "1000.00",
    "destinationAddress": "0xabc...",
    "status": "attesting"
  }
}