git-clean-gone-branches

# Clean Gone Branches Delete local branches whose remote tracking branch has been deleted, including any associated worktrees. ## Workflow ### Step 1: Discover gone branches Run the discovery script to fetch the latest remote state and identify gone branches: ```bash bash scripts/clean-gone ``` [scripts/clean-gone](./scripts/clean-gone) The script runs `git fetch --prune` first, then parses `git branch -vv` for branches marked `: gone]`. If the script outputs `__NONE__`, report that no stale branches were found and stop. ### Step 2: Present branches and ask for confirmation Show the user the list of branches that will be deleted. Format as a simple list: ``` These local branches have been deleted from the remote: - feature/old-thing - bugfix/resolved-issue - experiment/abandoned Delete all of them? (y/n) ``` Wait for the user's answer using the platform's question tool (e.g., `ask_user` in Copilot CLI). If no question tool is available, present the list and wait for the user's reply before proceeding. This is a yes-or-no decision on the entire list -- do not offer multi-selection or per-branch choices. ### Step 3: Delete confirmed branches If the user confirms, delete each branch. For each branch: 1. Check if it has an associated worktree (`git worktree list | grep "\\[$branch\\]"`) 2. If a worktree exists and is not the main repo root, remove it first: `git worktree remove --force "$worktree_path"` 3. Delete the branch: `git branch -D "$branch"` Report results as you go: ``` Removed worktree: .worktrees/feature/old-thing Deleted branch: feature/old-thing Deleted branch: bugfix/resolved-issue Deleted branch: experiment/abandoned Cleaned up 3 branches. ``` If the user declines, acknowledge and stop without deleting anything.