using-git-worktrees

Creates isolated workspaces for feature work with safety checks and clean baselines.

• Uses isolated git worktrees for feature isolation
• Follows systematic directory selection and safety verification
• Ensures clean, test-passing baselines before implementation
• Prevents accidental tracking of worktree contents

• Systematic directory selection: existing > CLAUDE.md > ask
• Mandatory .gitignore verification for project-local worktrees
• Auto-detects and runs project-specific setup commands
• Verifies clean test baseline before allowing implementation
• Reports worktree location and test results clearly
• Critical: never skip .gitignore verification
• Critical: never proceed with failing tests without asking
• Critical: always follow directory priority order

1. 1.Check for existing worktree directories (.worktrees or worktrees)
2. 2.Verify .gitignore contains worktree pattern or add and commit it
3. 3.Create worktree with git worktree add and run project setup
4. 4.Run baseline tests and verify passing results
5. 5.Report location and test status to confirm readiness