Merge branch 'main' into exp/orbit (pre-PR sync)

Conflicts resolved in:
- src/pages/SearchResults.tsx
- src/pages/AdvancedSearch.tsx

Both pages were rewritten on main (PR #303) to use the shared
<SongRow> component with click-to-enqueueAndPlay semantics. Orbit's
playSong helper that branched on orbit-active is no longer needed
at the page level — instead, orbit awareness moved INTO SongRow and
SongCard themselves: in an active orbit session both buttons collapse
into addTrackToOrbit (suggest for guests, host-enqueue for the host)
so we don't ship a queue replacement to every guest.

Also kept main's IntersectionObserver-based pagination on both pages.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/App.tsx

@@ -46,6 +46,7 @@ const LabelAlbums    = lazy(() => import('./pages/LabelAlbums'));
 const AdvancedSearch = lazy(() => import('./pages/AdvancedSearch'));
 const FolderBrowser  = lazy(() => import('./pages/FolderBrowser'));
 const InternetRadio  = lazy(() => import('./pages/InternetRadio'));
+const Tracks         = lazy(() => import('./pages/Tracks'));
 import MiniPlayer from './components/MiniPlayer';
 import { initMiniPlayerBridgeOnMain } from './utils/miniPlayerBridge';
 import FullscreenPlayer from './components/FullscreenPlayer';
@@ -468,6 +469,7 @@ function AppShell() {
               <Routes>
                 <Route path="/" element={<Home />} />
                 <Route path="/albums" element={<Albums />} />
+                <Route path="/tracks" element={<Tracks />} />
                 <Route path="/random" element={<RandomLanding />} />
                 <Route path="/random/albums" element={<RandomAlbums />} />
                 <Route path="/album/:id" element={<AlbumDetail />} />