feat(service-party-app): add transfer functionality with co-sign integration
Add complete KAVA transfer feature to the wallet home page:
Frontend (React):
- Home.tsx: Add transfer modal with address/amount input, transaction
confirmation, and co-sign session initiation
- Home.module.css: Transfer modal styles (form, confirm, error states)
- CoSignSession.tsx: Add transaction broadcast after signing completion,
with block explorer link
Utils:
- transaction.ts: EIP-1559 transaction building, RLP encoding, Keccak-256
hashing, nonce/gas fetching, transaction broadcast via JSON-RPC
Flow: Wallet -> Transfer Modal -> Prepare TX -> Confirm -> Co-Sign ->
Sign Session -> Broadcast -> Block Explorer
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
hailin
879fc3a816