- Rename old CoverflowPanel to StaticPanel (single artwork view)
- Create new CoverflowPanel with actual coverflow effect:
- Shows 5 album covers (2 prev, current, 2 next)
- 3D perspective rotation on side covers
- Click on side covers to navigate queue
- Smooth animation on track change
- Add 'static' tab to focus mode (4 tabs total)
- Update keyboard shortcuts: 1-4 for focus tabs
Display modes:
- Coverflow: centered album art with track info
- Split: artwork + panel side by side (current default)
- Lyrics Focus: single line at a time, large centered text
- Queue Focus: full screen queue view
- Visualizer Focus: full screen visualizer
Background:
- Heavy CSS blur (120px) for abstract color blobs
- No recognizable image, just colors
Keyboard shortcuts: 1-5 to switch modes
Inspired by Cider 3's immersive player design.