Controls bar added to playlist sidebar header with: - Prev/Next skip buttons (disabled when at bounds) - Shuffle toggle (Fisher-Yates order stored in localStorage) - Loop 3-state: off → loop all → loop one - Autoplay toggle (default on, persists per playlist in localStorage) All state is instant — no page reload on toggle. Co-Authored-By: Claude Sonnet 4.6 <[email protected]>