lan
5c81795d39
Refactor the messaging subsystem to enhance data consistency, prevent race conditions during WebSocket reconnection, and ensure accurate unread counts.
- **WebSocket Reliability**: Implement `client_msg_id` for precise message ACK matching, preventing incorrect pending message resolution in high-frequency scenarios.
- **Sync Logic**: Update `WSMessageHandler` and `MessageManager` to use a bootstrapping state, ensuring buffered SSE events are flushed only after the initial synchronization is complete.
- **State Consistency**:
- Introduce atomic unread count increments to prevent lost updates.
- Implement conditional rollback for optimistic read receipts, ensuring that failed API calls do not overwrite newer, valid read states.
- **Resource Management**: Add reference counting to `useMessages` hook to prevent premature clearing of loading states during rapid conversation switching or React StrictMode double-invocations.
- **Data Integrity**: Update `UserCacheService` to re-read the latest message list before applying sender info enrichment, ensuring new messages arriving during the async process are correctly processed.