I'd love to see answers of those questions too, especially the team ones.

Personally the skills that I have found most useful that I've written myself are these:

- uv-tdd - run a TDD loop on a Python project via uv: https://github.com/simonw/skills/blob/main/uv-tdd/SKILL.md

- setup-to-pyproject - migrate a setup.py Python project to pyproject.toml in the way I prefer https://github.com/simonw/skills/blob/main/setup-to-pyprojec...

- datasette-plugins: everything an LLM needs to write a new Datasette plugin https://github.com/datasette/skill/blob/main/SKILL.md