feat(web): align the web UI with the design prototype

- Ambient background in the app shell: three drifting blurred blobs,
  the third one tinted with the current track's cover; can be turned off
  in settings and stays still with reduced motion.
- Island player variant (floating glass panel) next to the bar, chosen
  in settings; player source line ("Album · …", "My Wave"), reactions
  around the transport controls, queue drawer.
- Sidebar: like / dislike counters, pending uploads badge on Queue,
  admin Settings page holding the upload queue limits.
- Collection: header tile with kicker, underline tabs, time / number
  lead column with an equalizer for the current track, album column,
  dimmed dislikes with undo, Play all / Shuffle pills.
- Album: cover-tinted header and Play / Shuffle; artist: artist wave,
  Play and popular tracks (new GET /artists/{id}/top-tracks).

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

apps/web/src/entities/catalog.module.css

@@ -110,6 +110,56 @@
   grid-template-columns: 40px minmax(0, 2fr) minmax(0, 1fr) auto;
 }
 
+.track:has(.lead) {
+  grid-template-columns: 44px 44px minmax(0, 1fr) auto;
+}
+
+.track:has(.lead):has(.trackAlbum) {
+  grid-template-columns: 44px 44px minmax(0, 1.4fr) minmax(0, 1fr) auto;
+}
+
+.lead {
+  display: flex;
+  justify-content: center;
+  font-size: 13px;
+  color: var(--text3);
+  font-variant-numeric: tabular-nums;
+}
+
+.dimmed {
+  opacity: 0.6;
+}
+
+.eq {
+  display: flex;
+  gap: 2px;
+  align-items: flex-end;
+  height: 14px;
+}
+
+.eq span {
+  width: 3px;
+  height: 14px;
+  border-radius: 2px;
+  background: var(--accent2);
+  transform-origin: bottom;
+  animation: pipuEq 0.55s ease-in-out infinite alternate;
+}
+
+.eq span:nth-child(2) {
+  animation-duration: 0.72s;
+  animation-delay: 0.1s;
+}
+
+.eq span:nth-child(3) {
+  animation-duration: 0.89s;
+  animation-delay: 0.2s;
+}
+
+.eqPaused span {
+  animation-play-state: paused;
+}
+
 .track:hover {
   background: var(--hover);
 }