feat(web): player bar, playable track lists and Collection (M3)

- player bar with cover, like and dislike, previous / play / next,
  shuffle, repeat, seek bar and volume; PlayerProvider lives with the
  signed-in shell and restores the last track and position paused
- clicking a row (or Enter) plays the list from that track with its
  context (album, search, history, collection); the current track is
  highlighted and rows have a like button; a reaction refreshes lists
- Collection: history grouped by day with clearing, likes with "play
  all" and dislikes, all with paging; sidebar section
- events and playback state are flushed when the page is hidden;
  player timers survive StrictMode remounts

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

apps/web/src/pages/SearchPage.tsx

@@ -89,7 +89,7 @@ export function SearchPage({ q, type }: { q: string; type: SearchType }) {
       {tracks.length > 0 && (
         <section className={c.section}>
           {type === 'all' && <h2>{t('search.tracks')}</h2>}
-          <TrackList tracks={tracks} showAlbum />
+          <TrackList tracks={tracks} showAlbum context={{ type: 'search', id: query, label: query }} />
         </section>
       )}
       {results.hasNextPage && (