- Refactored token aggregation query in db.py to use a single SQL query with SUM() instead of iterating through rows, improving performance
- Combined import statements in db.py and router.py to reduce lines of code
- Enhanced chat proxy in router.py to handle "moe-" prefixed models with multiple query execution and critique generation
- Added last_user_content() helper function to extract user content from messages
- Improved code readability and maintainability through these structural changes
- Introduce a lazily initialized, shared aiosqlite connection stored in self._db and two asyncio locks (_db_lock, _operation_lock) for safe concurrent access
- Ensure the database directory exists before connecting and enable WAL journaling and foreign keys on first connect
- Add close method to gracefully close the persistent connection
- Guard initialization and write operations with _operation_lock to ensure single-threaded schema setup
- Switch to ON CONFLICT UPSERT for token_counts updates and initialize token_time_series table
- Add typing for _db (Optional[aiosqlite.Connection]) and adjust imports accordingly
addition: Frontend button with total stats aggregation task and feedback span element to keep user informed and a small database footprint
