Generates and improves code documentation for Python projects. Use this skill whenever the user asks to document code, add docstrings, add type hints, or improve existing comments. Trigger even for partial requests like "document this function", "add comments to my file", "write a README for this project", or "explain what this module does". Also trigger when the user shares code and asks "what does this do?" in a way that implies they want documented output rather than a one-line explanation.