/cleanup

Clean up a completed worktree task

# Cleanup Worktree Task

Clean up a completed or abandoned worktree task by killing the tmux session and optionally removing the git worktree.

## Usage

Provide:
1. **Session name** - The tmux session to clean up
2. **--remove-worktree** (optional) - Also remove the git worktree directory

## Example

User: "Cleanup the my-feature worktree task"
User: "Cleanup my-feature and remove the worktree"

## Execution



## What It Does

1. Kills the tmux session
2. Lists remaining git worktrees
3. If `--remove-worktree`: removes the worktree directory
4. Shows next steps (merge branch, create PR)
...