feat: show title/album/artist order in bottom bar and now playing UI

- Bottom bar: player-info is now a centered flex column so text block
  aligns properly against the art circle
- Now playing: split artist·album line into album (above) + artist (below)
  matching the bottom bar layout; removed np-album-sep reference
- Removed stale np-album-sep style.display call from player.js

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/player.js

@@ -444,7 +444,6 @@ export function _syncNpDirect(s) {
         }).join('<span style="opacity:.5"> • </span>')
       : '—';
   }
-  const asep = document.getElementById('np-album-sep'); if(asep) asep.style.display = s.album ? '' : 'none';
   const aln = document.getElementById('np-album-name'); if(aln) aln.textContent = s.album || '';
   syncNpStar();
 }