Fix radio card, suggestions height, and lyrics auto-scroll

- Radio card: Remove queue buttons (radio replaces entire queue)
- Suggestions panel: Add max-height 80vh like other panels
- Lyrics: Revert overflow change that broke auto-scroll
- Lyrics: Apply scrollbar-on-hover to internal LyricsLines component

src/lib/components/immersive/panels/LyricsPanel.svelte

@@ -68,8 +68,7 @@
   .lyrics-container {
     flex: 1;
     min-height: 0;
-    overflow-y: auto;
-    overflow-x: hidden;
+    overflow: hidden;
     mask-image: linear-gradient(
       to bottom,
       transparent 0%,
@@ -86,40 +85,29 @@
     );
   }
 
-  /* Hide scrollbar by default, show on hover */
-  .lyrics-container::-webkit-scrollbar {
+  /* Scrollbar styles for internal LyricsLines component - show on hover */
+  .lyrics-container :global(.lyrics-lines::-webkit-scrollbar) {
     width: 6px;
-    opacity: 0;
   }
 
-  .lyrics-container::-webkit-scrollbar-track {
+  .lyrics-container :global(.lyrics-lines::-webkit-scrollbar-track) {
     background: transparent;
   }
 
-  .lyrics-container::-webkit-scrollbar-thumb {
+  .lyrics-container :global(.lyrics-lines::-webkit-scrollbar-thumb) {
     background: transparent;
     border-radius: 3px;
     transition: background 200ms ease;
   }
 
-  .lyrics-container:hover::-webkit-scrollbar-thumb {
+  .lyrics-container:hover :global(.lyrics-lines::-webkit-scrollbar-thumb) {
     background: rgba(255, 255, 255, 0.3);
   }
 
-  .lyrics-container:hover::-webkit-scrollbar-thumb:hover {
+  .lyrics-container:hover :global(.lyrics-lines::-webkit-scrollbar-thumb:hover) {
     background: rgba(255, 255, 255, 0.5);
   }
 
-  /* Firefox */
-  .lyrics-container {
-    scrollbar-width: thin;
-    scrollbar-color: transparent transparent;
-  }
-
-  .lyrics-container:hover {
-    scrollbar-color: rgba(255, 255, 255, 0.3) transparent;
-  }
-
   .lyrics-container :global(.lyrics-lines) {
     --text-primary: var(--alpha-95, rgba(255, 255, 255, 0.95));
     --text-secondary: var(--alpha-50, rgba(255, 255, 255, 0.5));

src/lib/components/immersive/panels/SuggestionsPanel.svelte

@@ -276,17 +276,11 @@
               <div class="card-glyph">
                 <Radio size={26} />
               </div>
-              <!-- Hover overlay with actions -->
+              <!-- Hover overlay with play button only (radio replaces queue) -->
               <div class="card-overlay">
-                <button class="overlay-btn secondary" onclick={() => onAddToQueue?.('radio', trackId)} title="Add to queue">
-                  <ListPlus size={16} />
-                </button>
-                <button class="overlay-btn primary" onclick={startSongRadio} disabled={loadingRadio} title="Play">
+                <button class="overlay-btn primary" onclick={startSongRadio} disabled={loadingRadio} title="Play Radio">
                   <Play size={20} fill="currentColor" />
                 </button>
-                <button class="overlay-btn secondary" onclick={() => onPlayNext?.('radio', trackId)} title="Play next">
-                  <ListEnd size={16} />
-                </button>
               </div>
             </div>
             <div class="card-content">
@@ -339,6 +333,7 @@
   .suggestions-panel {
     flex: 1;
     min-height: 0;
+    max-height: 80vh;
     display: flex;
     flex-direction: column;
     overflow: hidden;