- Virtualize queue list in QueueViewer.vue using RecycleScroller
- Add 300ms debounce on queue_updated refetches to prevent cascading JSON fetch
- Implement client-side pagination (100 items/page) + cache in PlayListManager.vue with sortedTracks memoization
- Limit browse infinite scroll memory usage via sliding window (200 items)
+ Minor CSS fixes for flexbox overflow/min-width to support virtualization