- Add workspace_task.dart for workspace task domain model
- Add proto_socket_task_service.dart for ProtoSocket integration
- Add proto_socket_task_service_test.dart for service tests
- Clean up deprecated cloud-G06 task service files
- Add proto socket client and envelope implementations
- Add proto socket lifecycle integration tests
- Add task service PLAN and CODE_REVIEW documents
- Add workspace integration PLAN and CODE_REVIEW documents
- Update bootstrap with proto socket integration
- Update pubspec dependencies and lock file
- Update Flutter core API candidates documentation
- Update workflow core milestone tracking
