Seed Deposit (Devnet)
Rocky impl:
POST /v1/deposits/seed✓
Devnet only. Mint synthetic balance into a user's account via the bridge service.
Request
POST /v1/deposits/seed
Content-Type: application/json
{ "user_id": "5cfb031b-...", "asset": "USDC", "amount": "100" }
Response — 200
{ "chain_tx_id": "0xabc123...", "canton_command_id": "cmd-4f5e6d7c..." }
Used by rocky-bot/scripts/mint-30.sh to credit each new account with $100 USDC and by make seed-devnet for smoke tests. Returns 404 on mainnet.