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/widgets/AppShell.module.css

@@ -13,6 +13,7 @@
   grid-area: top;
   display: flex;
   align-items: center;
+  gap: 24px;
   justify-content: space-between;
   padding: 0 20px;
   border-bottom: 1px solid var(--line);
@@ -21,9 +22,17 @@
 }
 
 .logoLink {
+  width: 196px;
+  flex: none;
   text-decoration: none;
 }
 
+@media (max-width: 1023px) {
+  .logoLink {
+    width: auto;
+  }
+}
+
 .topRight {
   display: flex;
   align-items: center;