use-worktree

Directory Selection (Priority Order)

1. Check Existing Directories

ls -d .worktrees 2>/dev/null     # Preferred (hidden)
ls -d worktrees 2>/dev/null      # Alternative

Use whichever exists. If both exist, .worktrees wins.

2. Check CLAUDE.md

grep -i "worktree.*director" CLAUDE.md 2>/dev/null

If a preference is specified, use it without asking.

3. Ask User

If no directory exists and no CLAUDE.md preference:

No worktree directory found. Where should I create worktrees?

1. .worktrees/ (project-local, hidden)
2. A custom location

Which do you prefer?

Safety Verification

For project-local directories (.worktrees or worktrees):

git check-ignore -q .worktrees 2>/dev/null || git check-ignore -q worktrees 2>/dev/null

If NOT ignored: Add to .gitignore and commit before creating the worktree.

Creation Steps

1. Create Worktree

project=$(basename "$(git rev-parse --show-toplevel)")
git worktree add "$path" -b "$BRANCH_NAME"
cd "$path"

2. Run Project Setup (auto-detect)

# Node.js
[ -f package.json ] && npm install

# Rust
[ -f Cargo.toml ] && cargo build

# Python
[ -f requirements.txt ] && pip install -r requirements.txt
[ -f pyproject.toml ] && poetry install

# Go
[ -f go.mod ] && go mod download

# iOS/Swift
[ -f Package.swift ] && swift build

3. Verify Clean Baseline

Run the project's test suite. If tests fail, report failures and ask whether to proceed or investigate.

4. Report

Worktree ready at <full-path>
Tests passing (<N> tests, 0 failures)
Ready to implement <feature-name>

Quick Reference

Situation	Action
.worktrees/ exists	Use it (verify ignored)
worktrees/ exists	Use it (verify ignored)
Both exist	Use .worktrees/
Neither exists	Check CLAUDE.md; ask user
Directory not ignored	Add to .gitignore + commit
Tests fail at baseline	Report + ask user