Music: drop the duplicate player card, add Visuals/Queue/Sleep to the bottom bar, redesign Now Playing sheet, add full-screen view, show queue when no lyrics

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

public/app.js

@@ -55,6 +55,9 @@ async function loadSettings() {
 
 const ICONS = {
   film: '<rect x="3" y="4" width="18" height="16" rx="2"/><path d="M7 4v16M17 4v16M3 9h4M3 15h4M17 9h4M17 15h4"/>',
+  queue: '<path d="M4 6h12M4 11h12M4 16h7M15 14v6l5-3z"/>',
+  visuals: '<path d="M5 10v4M9 6v12M13 9v6M17 4v16M21 11v2"/>',
+  moon: '<path d="M20 14.5A8 8 0 019.5 4 8 8 0 1020 14.5z"/>',
   lyrics: '<path d="M5 6h14M5 11h10M5 16h14M5 21h8"/>',
   chat: '<path d="M4 5h16a1 1 0 011 1v10a1 1 0 01-1 1H10l-5 4v-4H4a1 1 0 01-1-1V6a1 1 0 011-1z"/>',
   clip: '<path d="M20 11l-8 8a5 5 0 01-7-7l8-8a3.5 3.5 0 015 5l-8 8a2 2 0 01-3-3l7-7"/>',