This patch tightens the favorite/autoplay logic in ziptuner by changing how the current favorite index is tracked, persisting the selected station directly to ziptuner.fav, and avoiding a cross-filesystem rename path that was failing on IZ2S. It also fixes cleanup behavior so deleting the currently autoloaded favorite removes the resume marker instead of leaving stale state behind, and updates startup checks so autoplay only triggers for a valid saved favorite. The example VLC launcher now reflects that behavior more clearly with a prompt to resume the saved favorite. Practical effect: favorite station resume should be much more reliable now.