- Introduced a new `PrivateHandlers` class to encapsulate private message handling logic, improving organization and maintainability.
- Added new dependencies in `requirements.txt` for database support with `aiosqlite`.
- Updated the private handlers to utilize modular components for better separation of concerns and easier testing.
- Implemented error handling and logging for improved robustness in message processing.
- Introduced a new server monitoring module in `run_helper.py` with graceful shutdown handling.
- Updated `.gitignore` to include PID files.
- Added `test-monitor` target in `Makefile` for testing the server monitoring module.
- Included `psutil` in `requirements.txt` for system monitoring capabilities.
