fix(queue): preserve scroll context when user clicks a track in the queue

Auto-scroll used to fire on every currentTrack change, including manual
clicks inside the queue list itself. The clicked track would slide off
screen as the list rebased onto the new "next track", which is
disorienting — the user just acted on something specific and expects to
keep seeing it.

Set a one-shot suppression flag from the queue-item onClick handler so
the immediately following auto-scroll effect skips its scrollIntoView
call. Natural advance (track end, prev/next button, anything that does
not originate inside the queue list) leaves the flag untouched and keeps
the original "show what's coming next" behavior.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/components/QueuePanel.tsx

@@ -297,6 +297,12 @@ function QueuePanelHostOrSolo() {
   const enqueueAt = usePlayerStore(s => s.enqueueAt);
   const contextMenu = usePlayerStore(s => s.contextMenu);
 
+  // When the user picks a track *from* the queue list, suppress the
+  // upcoming auto-scroll so their click target stays in view instead of
+  // the list rebasing onto the next track. Auto-advance (natural playback)
+  // never sets this flag, so it keeps its original "show what's next" behavior.
+  const suppressNextAutoScrollRef = useRef(false);
+
   const playbackSource = usePlayerStore(s => s.currentPlaybackSource);
 
   const crossfadeEnabled = useAuthStore(s => s.crossfadeEnabled);
@@ -407,6 +413,10 @@ function QueuePanelHostOrSolo() {
   }, [enqueueAt]);
 
   useEffect(function queueAutoScroll() {
+    if (suppressNextAutoScrollRef.current) {
+      suppressNextAutoScrollRef.current = false;
+      return;
+    }
     if (!queueListRef.current || queueIndex < 0) return;
     if (activeTab !== 'queue') return;
     const songs = queueListRef.current!.querySelectorAll<HTMLElement>('[data-queue-idx]');
@@ -741,7 +751,10 @@ function QueuePanelHostOrSolo() {
               <div
                 data-queue-idx={idx}
                 className={`queue-item ${isPlaying ? 'active' : ''} ${contextMenu.isOpen && contextMenu.type === 'queue-item' && contextMenu.queueIndex === idx ? 'context-active' : ''}`}
-                onClick={() => playTrack(track, queue)}
+                onClick={() => {
+                  suppressNextAutoScrollRef.current = true;
+                  playTrack(track, queue);
+                }}
                 onContextMenu={(e) => {
                   e.preventDefault();
                   usePlayerStore.getState().openContextMenu(e.clientX, e.clientY, track, 'queue-item', idx);