feat(web): polish catalog motion, empty states, and mobile now-playing

Co-authored-by: Cursor <cursoragent@cursor.com>

apps/web/src/pages/TrackPage.tsx

@@ -4,8 +4,12 @@ import { Link } from '@tanstack/react-router';
 import { useTranslation } from 'react-i18next';
 
 import { useSession } from '../app/session';
-import { ArtistLinks, Cover, TrackList } from '../entities/catalog';
+import { ArtistLinks, Cover, coverSrc } from '../entities/catalog';
+import { AddToPlaylist } from '../entities/playlists';
+import { usePlayer, usePlayerState } from '../player/context';
 import { formatDuration } from '../shared/lib/format';
+import { pauseIcon, playIcon } from '../shared/ui/icons';
+import { Button, PageSkeleton } from '../shared/ui/ui';
 import { NotFound } from './NotFound';
 import s from './page.module.css';
 import c from './catalog.module.css';
@@ -14,27 +18,63 @@ import { TrackGenius } from './TrackGenius';
 export function TrackPage({ id }: { id: string }) {
   const { t } = useTranslation();
   const session = useSession();
+  const player = usePlayer();
+  const st = usePlayerState();
   const track = useQuery({
     queryKey: ['track', id],
     queryFn: async () => unwrap(await session.client.GET('/api/v1/tracks/{id}', { params: { path: { id } } })),
   });
+  if (track.isPending) {
+    return (
+      <div className={s.page}>
+        <PageSkeleton />
+      </div>
+    );
+  }
   if (track.isError) return <NotFound error={track.error} />;
   const tr = track.data;
+  if (!tr) return null;
+  const ctx = { type: 'queue' as const };
+  const current = st.track?.id === tr.id;
+  const playing = current && st.playing;
   return (
     <div className={s.page}>
-      <header className={c.hero}>
-        {tr && <Cover album={tr.album} size={200} />}
-        <div className={c.heroBody}>
-          <span className={c.kind}>{t('player.track_page')}</span>
-          <h1 className={c.heroTitle}>{tr?.title ?? '…'}</h1>
-          {tr && <>
-            <span className={c.heroMeta}><ArtistLinks artists={tr.artists} /> · {formatDuration(tr.duration_ms)}</span>
-            <Link to="/album/$id" params={{ id: tr.album.id }}>{tr.album.title}</Link>
-          </>}
+      <div className={c.listen}>
+        <header className={c.hero}>
+          {tr.album.cover_url && (
+            <span className={c.heroBg} aria-hidden>
+              <img src={coverSrc(tr.album.cover_url, 300)} alt="" />
+            </span>
+          )}
+          <Cover album={tr.album} size={280} className={c.heroCover} />
+          <div className={c.heroBody}>
+            <span className={c.kind}>{t('player.track_page')}</span>
+            <h1 className={c.heroTitle}>{tr.title}</h1>
+            <span className={c.heroMeta}>
+              <ArtistLinks artists={tr.artists} /> · {formatDuration(tr.duration_ms)}
+            </span>
+            <Link to="/album/$id" params={{ id: tr.album.id }}>
+              {tr.album.title}
+            </Link>
+            <div className={c.heroActions}>
+              {tr.available && (
+                <Button
+                  variant="primary"
+                  className={c.pill}
+                  icon={playing ? pauseIcon : playIcon}
+                  onClick={() => (current ? player.toggle() : player.playList([tr], 0, ctx))}
+                >
+                  {t(playing ? 'player.pause' : 'catalog.play')}
+                </Button>
+              )}
+              <AddToPlaylist trackIds={[tr.id]} />
+            </div>
+          </div>
+        </header>
+        <div className={c.listenLyrics}>
+          <TrackGenius id={id} />
         </div>
-      </header>
-      {tr && <TrackList tracks={[tr]} context={{ type: 'queue' }} />}
-      {tr && <TrackGenius id={id} />}
+      </div>
     </div>
   );
 }