/branch-cleanup

Clean up old and defunct branches that are no longer needed

## Name
git:branch-cleanup

## Synopsis


## Description
The `git:branch-cleanup` command identifies and removes old, defunct, or merged branches from your local repository (and optionally from remote). It helps maintain a clean repository by removing branches that are no longer needed, such as:
- Branches that have been merged into the main branch
- Branches that no longer exist on the remote
- Stale feature branches from completed work

The command performs safety checks to prevent deletion of:
- The current branch
- Protected branches (main, master, develop, etc.)
- Branches with unmerge...