**Fixes**: 1) Remove redundant `slugify` import from `core/models.py`;
**Extra**: 1) Update `poetry.lock` and `pyproject.toml` to lock `python-slugify@8.0.4` and refine dependency definitions; 2) Improve readability of debug logging in `TweakedAutoSlugField`.
Fixes: 1) Correct type hints and comments for better accuracy; 2) Address formatting inconsistencies in exception messages and queries;
Extra: Refactor long lines for improved readability and maintainability across functions and methods;
Fixes: 1) Resolved redundant lines and formatting inconsistencies across multiple files; 2) Corrected Collection typing imports and Optional replacements with union types (e.g., `str | None`);
Extra: Improved formatting and readability by consolidating single-line code sections and simplifying expressions.
