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/test/fakeApi.ts

@@ -17,6 +17,17 @@ const problem = (status: number, code: string, extra: object = {}) => json({ sta
 
 let seq = 0;
 
+const kino = { id: '00000000-0000-4000-8000-0000000000aa', name: 'Кино' };
+const albumSummary = {
+  id: '00000000-0000-4000-8000-0000000000bb',
+  title: 'Группа крови',
+  year: 1988,
+  cover_url: null,
+  cover_colors: [],
+  artist: kino,
+  track_count: 11,
+};
+
 export function makeUser(username: string, role: Role, extra: Partial<FakeUser> = {}): FakeUser {
   seq++;
   return {
@@ -146,6 +157,24 @@ export function fakeApi(initial: FakeUser[]) {
       }
       case 'GET /api/v1/admin/audit':
         return json({ items: [], next_cursor: null });
+      case 'GET /api/v1/search/suggest':
+      case 'GET /api/v1/search': {
+        // «rbyj» — «кино» в английской раскладке: сервер находит и сообщает исправление.
+        const q = url.searchParams.get('q') ?? '';
+        const hit = q === 'кино' || q === 'rbyj';
+        return json({
+          artists: hit ? [kino] : [],
+          albums: hit ? [albumSummary] : [],
+          tracks: [],
+          totals: { artists: hit ? 1 : 0, albums: hit ? 1 : 0, tracks: 0 },
+          corrected_query: q === 'rbyj' ? 'кино' : null,
+          next_cursor: null,
+        });
+      }
+      case `GET /api/v1/artists/${kino.id}`:
+        return json({ ...kino, album_count: 1, track_count: 0 });
+      case `GET /api/v1/artists/${kino.id}/albums`:
+        return json({ items: [albumSummary] });
     }
     return problem(404, 'common.not_found');
   };