Version Check

If $ARGUMENTS is --version, respond with exactly:

install-worktree-rule v1.0.0

Then stop.

Otherwise, print install-worktree-rule v1.0.0 as the first line of output, then proceed.

Version check: Read ${CLAUDE_SKILL_DIR}/SKILL.md from disk and extract the version: field from frontmatter. Compare to this skill's version (1.0.0). If they differ, print:

⚠ This skill is running v1.0.0 but vA.B.C is installed. Restart the session to use the latest version.

Continue running — do not stop.

Install Worktree Rule

Installs the always-use-worktrees-and-prs.md rule into the current project's .claude/rules/ directory. This rule enforces a structured git workflow: every change goes through a worktree, a draft PR, incremental commits, and a squash merge.

Uninstall Mode

If $ARGUMENTS contains --uninstall:

1. Check if .claude/rules/always-use-worktrees-and-prs.md exists.
2. If it exists, delete it. Print:

   ✓ Removed .claude/rules/always-use-worktrees-and-prs.md
   

3. If it does not exist, print:

   Nothing to remove — .claude/rules/always-use-worktrees-and-prs.md not found.
   

4. Stop.

Install Mode (default)

Step 1: Check Prerequisites

1. Verify the current directory is a git repository (check for .git/ or .git file).

   • If not, print ERROR: Not a git repository. and stop.

2. Check if .claude/rules/always-use-worktrees-and-prs.md already exists.

   • If it exists, read it and compare to the bundled version at ${CLAUDE_SKILL_DIR}/references/always-use-worktrees-and-prs.md.
   • If identical, print Already installed and up to date. and stop.
   • If different, print Updating .claude/rules/always-use-worktrees-and-prs.md to latest version. and continue to Step 2.

Step 2: Install the Rule

1. Create .claude/rules/ if it doesn't exist.
2. Read the rule content from ${CLAUDE_SKILL_DIR}/references/always-use-worktrees-and-prs.md.
3. Write it to .claude/rules/always-use-worktrees-and-prs.md.

Step 3: Verify and Report

1. Confirm the file exists and is non-empty.
2. Print:

   ✓ Installed .claude/rules/always-use-worktrees-and-prs.md
   
   This rule enforces:
     • All work in git worktrees (never commit to main directly)
     • Draft PR created before any code
     • Atomic commits pushed after each change
     • Squash merge and worktree cleanup
   
   To remove: /install-worktree-rule --uninstall
   

Error Handling

• If the Write tool fails, print the error and stop.
• If the directory creation fails, print the error and stop.