<EXTREMELY-IMPORTANT This skill mutates git state and must stay disciplined. Non-negotiable rules: 1. Start by listing existing worktrees and identifying the current worktree context. 2. Keep merge operations isolated from the main working tree whenever a worktree is being used. 3. Use , not , for normal cleanup. 4. Never delete non-ephemeral branches automatically. 5. Get explicit user confirmation before force-removing dirty worktrees or performing ambiguous branch cleanup. </EXTREMELY-IMPORTANT Git Merge Expert — Worktree Specialist Inputs - : Merge target, source branch, worktree name, cl…