tweak: increase album/artist gap in player bar to 4px

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

styles.css

@@ -264,7 +264,7 @@ button:focus{outline:none}
 .np-sheet-item.danger svg{color:var(--danger)}
 
 .player-artist{font-size:11px;color:var(--text2);margin-top:0;line-height:1.2;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
-.player-artist+.player-artist{margin-top:2px}
+.player-artist+.player-artist{margin-top:4px}
 .player-badge{display:inline-block;font-size:9px;font-weight:700;padding:1px 5px;border-radius:3px;margin-left:5px;vertical-align:middle}
 .player-controls{display:flex;flex-direction:column;align-items:center;gap:7px;width:420px;padding:0 24px}
 .ctrl-buttons{display:flex;align-items:center;gap:10px}