실거래 주문 생성/조회/취소 흐름이 contracts, worker, API, CLI, Flutter parser까지 같은 메시지 경계로 이어져야 한다.\n\n브로커 호출 전 operator confirmation과 malformed order validation을 worker-owned runtime에서 막고, 리뷰 완료 산출물을 archive에 보존한다.
- Add backtest and market socket handlers for API and Worker
- Add proto definitions for backtest and market services
- Update client socket integration and tests
- Generate protobuf code for Go and Dart
- Archive completed agent tasks under agent-task/archive/2026/05/
- Add socket handler and server implementations for real-time communication
- Add Mattermost integration (auth service, push client, plugin client)
- Add Mattermost push host integration tests
- Update Flutter client app with new app structure and bootstrap
- Update Android build configurations and add Google Services config
- Add asset keep file for Flutter client
- Update agent-roadmap with api-centered-proto-socket-rail milestone
- Update agent-task with planning and code review documents for all groups
- Update domain rules for api, client, worker and project rules
