Backend emits 'scene-discovery-progress' events with phase, progress
percentage, and detail. Frontend listens and shows a real progress bar
(0-40% MB search, 40-95% Qobuz validation, 100% done).
Loading state: hides header, cycles icons (Music/Globe/Network) at
1.5s intervals in a 96px pulse circle, shows progress bar with
percentage text.
vicrodh
faa68d1079