Playlist browser:
- GET /api/playlist returns all track titles via ReadProcessMemory
- WS command {cmd:jump, index:N} jumps to track (0-based)
- Full-screen overlay with scrollable list
- Current track highlighted, auto-scrolls into view on open
- Live highlight update when track changes while panel is open

PWA:
- manifest.json with standalone display + theme colour
- sw.js: cache-first service worker for shell files
- icon.svg: music-note icon on dark background
- Apple/Android meta tags for Add to Homescreen

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>