Lilwenz

Python code quality with ruff (linting & formatting) and ty (type checking). Covers pyproject.toml configuration, pre-commit hooks, and type hints. Use when user mentions ruff, ty, linting, formatting, type checking, code style, or Python code quality.

Systematic code refactoring skill that transforms complex, hard-to-understand code into clear, well-documented, maintainable code while preserving correctness. Use when users request "readable", "maintainable", or "clean" code, during code reviews flagging comprehension issues, for legacy code modernization, or in educational/onboarding contexts. Applies structured refactoring patterns with validation.