- Drop auth.users FK constraints for wallet-based authentication
- Fix deferrable unique constraint on blockchain_tx_hash (ON CONFLICT compat)
- Rewrite block search: HTTP RPC + blake2b instead of WS-only @pezkuwi/api
- Add blockNumber hint for faster verification of older transactions
- Normalize SS58/hex addresses via base58 for reliable comparison
- DepositModal captures approximate block number after tx submission
