Categorize new Neovim plugins and insert them into the correct markdown category files
Draft `teach:` commit messages for `.github/workflows/improve-add-skill.yml`. Use when preparing or reviewing a correction commit that should trigger the Improve Add Skill workflow from `$add` categorization feedback, including moved plugin entries, removed or excluded plugins, changed `.reason.md` categories, or review-approved rationale that should be generalized into `.codex/skills/add/**`.
Improve the repo-local add skill from reviewed Neovim plugin categorization corrections. Use when a correction commit, PR review result, diff, or artifact such as a `teach:` commit shows that `$add` placed, excluded, or reasoned about plugins incorrectly and the reusable lesson should be folded back into `.codex/skills/add/**`.