- Removed the `RawDataManager` class and integrated its functionality directly into the `RawTradeRepository`, streamlining the management of raw trade data.
- Implemented the `cleanup_old_raw_data` method to delete outdated records, preventing table bloat and improving performance.
- Added the `get_raw_data_stats` method to retrieve statistics about raw data storage, enhancing data management capabilities.
- Updated documentation to reflect the new methods and their usage, ensuring clarity for future developers.
These changes improve the maintainability and efficiency of the database operations related to raw trade data.