worktree - SKILL.md Agent Skill

name: worktree description: Work in an isolated git worktree for issues, features, or refactors. Use when the user asks to spin up a worktree, work in isolation, create an isolated branch, or says "worktree" in the context of starting work on something.

Worktree Workflow

Work on a task in an isolated git worktree with its own Lookbook instance.

1. Create the worktree

Use the EnterWorktree tool to create and switch into a worktree. Name it after the task when possible:

EnterWorktree(name: "fix-button-hover")

This creates a worktree in .claude/worktrees/, creates a branch based on HEAD, and switches your working directory into it.

2. Start Lookbook

Start Lookbook on the worktree's assigned port:

bin/worktree start

This daemonizes Lookbook + Tailwind and returns immediately. The port is deterministic (based on worktree name, range 4101-4600) and printed to stdout.

Print the URL for the user:

Lookbook → http://localhost:<port>/lookbook

Useful commands while working:

bin/worktree port       # Show the assigned port
bin/worktree status     # Check if services are running
bin/worktree stop       # Stop services (do this at the end)

3. Do the work

Work on the task. For component work, follow the contributing skill (.claude/skills/contributing/SKILL.md) for conventions.

4. Commit

The worktree already has its own branch (created by EnterWorktree). Commit to the current branch — do NOT create a new branch:

git add [specific files]
git commit -m "feat: description (#N)"

Run lint and tests before committing:

bundle exec standardrb --fix
bundle exec rake test

5. Push and create PR

git push -u origin $(git branch --show-current)

Create the PR. Include Closes #N in the body if working on an issue:

gh pr create --title "<title>" --body "$(cat <<'EOF'
## Summary
- [what was done]

Closes #N

## Test plan
- [ ] Visual review in Lookbook
EOF
)"

Print the PR URL for the user.

6. Show Lookbook preview

Print the Lookbook URL so the user can review visually:

Lookbook → http://localhost:<port>/lookbook/inspect/kiso/<component>/playground
PR → https://github.com/steveclarke/kiso/pull/<number>

7. Cleanup

Stop Lookbook when the user is done reviewing:

bin/worktree stop

On session exit, Claude Code will prompt the user to keep or remove the worktree.