worktree-cleanup

name	worktree-cleanup
description	Clean up worktrees for branches that have been merged and deleted
disable-model-invocation	true

The user wants to clean up worktrees that are no longer needed because their branches have been merged and deleted on GitHub.

Follow these steps:

1. Fetch latest from remote by running git fetch origin --prune to update remote tracking refs and prune deleted branches.

2. List all worktrees by running git worktree list to get all current worktrees and their branches.

3. Identify candidates for cleanup. For each worktree (excluding the main worktree at the repo root):

   • Get the branch name from the worktree list output.
   • Check if the branch still exists on the remote by running git branch -r --list "origin/<branch-name>".
   • If the remote branch is gone, it's a cleanup candidate.

4. If no candidates are found, tell the user all worktrees are still active and there's nothing to clean up.

5. Present the candidates to the user. Show a summary like:

   Found worktrees for branches that no longer exist on remote:
   
   - ../ordning-72-dataset-export (branch: 72-dataset-export)
   - ../ordning-85-fix-login-bug (branch: 85-fix-login-bug)
   

   Ask the user which ones they want to remove, or if they want to remove all of them.

6. For each worktree the user confirms for removal:

   • Run git worktree remove <worktree-path> to remove the worktree.
   • If that fails because of uncommitted changes, inform the user and ask if they want to force it with git worktree remove --force <worktree-path>.
   • Delete the local branch with git branch -d <branch-name>. If it fails (not fully merged), inform the user and ask if they want to force it with git branch -D <branch-name>.

7. Run git worktree prune to clean up any stale worktree references.

8. Show a summary of what was cleaned up:

   Cleaned up 2 worktree(s):
   - ../ordning-72-dataset-export
   - ../ordning-85-fix-login-bug