update-skillslisted

# About Skills are distributed as git branches (`skill/*`). When you install a skill, you merge its branch into your repo. This skill checks upstream for newer commits on those skill branches and helps you update. Run `/update-skills` in Claude Code. ## How it works **Preflight**: checks for clean working tree and upstream remote. **Detection**: fetches upstream, lists all `upstream/skill/*` branches, determines which ones you've previously merged (via merge-base), and checks if any have new commits. **Selection**: presents a list of skills with available updates. You pick which to update. **Update**: merges each selected skill branch, resolves conflicts if any, then validates with build + test. --- # Goal Help users update their installed skill branches from upstream without losing local customizations. # Operating principles - Never proceed with a dirty working tree. - Only offer updates for skills the user has already merged (installed). - Use git-native operations. Do not manually rewrite files except conflict markers. - Keep token usage low: rely on `git` commands, only open files with actual conflicts. # Step 0: Preflight Run: - `git status --porcelain` If output is non-empty: - Tell the user to commit or stash first, then stop. Check remotes: - `git remote -v` If `upstream` is missing: - Ask the user for the upstream repo URL. - `git remote add upstream <url>` Fetch: - `git fetch upstream --prune` # Step 1: Detect installed skills with available update