- Add ClassVar type annotation to DB_DIR to fix the Pydantic validation error
- Update Config to model_config for Pydantic v2 compatibility
- Ensure the Settings class properly handles the database directory path
- Fix unused imports in API endpoints
- Add proper __all__ exports in model and schema modules
- Add proper TYPE_CHECKING imports in models to prevent circular imports
- Fix import order in migrations
- Fix long lines in migration scripts
- All ruff checks passing