[Feature Request] Agent Skills documentation

Hi, I am a huge fan of this library! I really would like to get claude code to make better dndkit experiences in my codebase. I have found it looking at the docs and considering making my own skill. However, you all know dndkit best practices and I would really appreciate a first-party skill from the repo maintainers on best practices for AIs based on your docs.

Thank you for the consideration and the great project!

The issue names no target file, test, or entry point. Start by reviewing the repository's existing documentation and clarifying the expected Agent Skills format and scope with maintainers. Done means an agreed first-party skill is added that captures selected dnd-kit best practices from the documentation.

Written by the indexing model from the issue text.