feat(web): storage admin, search and catalog pages (M2)

- Storage admin: local folders with a folder picker and NFS sources,
  connection test, scan and full scan with live progress, enable,
  disable, delete
- path pattern editor with reorder, examples and a preview table that
  shows which pattern matched and what came from tags; compile errors
  land under the broken pattern
- Library page with counters, scans and unreadable files; search
  reindex for admins
- search box in the top bar: combobox with keyboard navigation, 150 ms
  debounce, cancelled stale requests, "/" and Ctrl+K, layout fix hint
- search page with tabs and paging, artist and album pages, album
  cards and track lists; unavailable tracks are dimmed

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

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

@@ -0,0 +1,164 @@
+.cover {
+  position: relative;
+  display: inline-grid;
+  place-items: center;
+  flex: none;
+  overflow: hidden;
+  border-radius: 8px;
+  color: rgba(255, 255, 255, 0.85);
+}
+
+.cover img {
+  position: absolute;
+  inset: 0;
+  width: 100%;
+  height: 100%;
+  object-fit: cover;
+}
+
+.round {
+  border-radius: 50%;
+}
+
+.link {
+  color: inherit;
+  text-decoration: none;
+}
+
+.link:hover {
+  text-decoration: underline;
+}
+
+.grid {
+  display: grid;
+  grid-template-columns: repeat(auto-fill, minmax(168px, 1fr));
+  gap: 20px;
+}
+
+.card,
+.artistChip {
+  display: flex;
+  flex-direction: column;
+  gap: 6px;
+  min-width: 0;
+  padding: 10px;
+  margin: -10px;
+  border-radius: var(--radius-lg);
+  color: inherit;
+  text-decoration: none;
+}
+
+.card:hover,
+.artistChip:hover {
+  background: var(--hover);
+}
+
+.artistChip {
+  align-items: center;
+  text-align: center;
+  width: 128px;
+}
+
+.cardCover {
+  aspect-ratio: 1;
+  border-radius: 12px;
+  margin-bottom: 4px;
+}
+
+.cardTitle {
+  font-weight: 600;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+  max-width: 100%;
+}
+
+.cardMeta {
+  font-size: 13px;
+  color: var(--text3);
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+  max-width: 100%;
+}
+
+.tracks {
+  display: flex;
+  flex-direction: column;
+}
+
+.disc {
+  margin: 14px 12px 6px;
+  font-size: 12px;
+  font-weight: 700;
+  letter-spacing: 0.06em;
+  text-transform: uppercase;
+  color: var(--text3);
+}
+
+.track {
+  display: grid;
+  grid-template-columns: 40px minmax(0, 1fr) auto;
+  align-items: center;
+  gap: 14px;
+  min-height: 56px;
+  padding: 6px 12px;
+  border-radius: 10px;
+}
+
+.track:has(.trackAlbum) {
+  grid-template-columns: 40px minmax(0, 2fr) minmax(0, 1fr) auto;
+}
+
+.track:hover {
+  background: var(--hover);
+}
+
+.unavailable {
+  opacity: 0.45;
+}
+
+.num {
+  display: grid;
+  place-items: center;
+  color: var(--text3);
+  font-variant-numeric: tabular-nums;
+}
+
+.trackMain {
+  display: flex;
+  flex-direction: column;
+  min-width: 0;
+}
+
+.trackTitle {
+  font-weight: 500;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+}
+
+.trackArtists,
+.trackAlbum {
+  font-size: 13px;
+  color: var(--text2);
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+}
+
+.duration {
+  font-size: 13px;
+  color: var(--text3);
+  font-variant-numeric: tabular-nums;
+}
+
+@media (max-width: 767px) {
+  .track:has(.trackAlbum) {
+    grid-template-columns: 40px minmax(0, 1fr) auto;
+  }
+
+  .trackAlbum {
+    display: none;
+  }
+}