/end

End the current development session with summary

End the current development session by:

1. Check `.claude/sessions/.current-session` for the active session
2. If no active session, inform user there's nothing to end
3. If session exists, append a comprehensive summary including:
   - Session duration
   - Git summary:
     * Total files changed (added/modified/deleted)
     * List all changed files with change type
     * Number of commits made (if any)
     * Final git status
   - Todo summary:
     * Total tasks completed/remaining
     * List all completed tasks
     * List any incomplete tasks with status
   - Key accomplishments
  ...