Git Branch Cleanup

Use this skill to safely remove merged or stale branches with explicit user confirmation.

Safety Rules

• Stop if the working tree is not clean.
• Detect the default branch from origin/HEAD and fall back to main, then master.
• Never delete protected branches.
• Never force delete unless the user explicitly approves.

Workflow

1. Check repository state

   • git status --porcelain
   • If not clean, ask the user to commit or stash first.

2. Detect default branch

   • git symbolic-ref refs/remotes/origin/HEAD | sed 's@^refs/remotes/origin/@@'