Add time consuming debugging logs

backend/app/api/music.py

@@ -126,9 +126,12 @@ async def get_all_music(
     db: AsyncSession = Depends(get_db)
 ):
     """Get all music files with sorting - optimized for performance"""
+    import time
     from sqlalchemy import asc, desc
     from sqlalchemy.orm import noload
     
+    start_time = time.time()
+    
     # Don't load relationships for this endpoint (causes N+1 queries)
     query = select(Music).options(noload(Music.playlists))
     
@@ -144,10 +147,21 @@ async def get_all_music(
         query = query.order_by(desc(sort_column))
     
     # Execute with limit and offset
+    query_start = time.time()
     result = await db.execute(
         query.offset(skip).limit(limit)
     )
+    query_time = time.time() - query_start
+    
+    # Get results
+    fetch_start = time.time()
     music_list = result.scalars().all()
+    fetch_time = time.time() - fetch_start
+    
+    total_time = time.time() - start_time
+    
+    logger.info(f"Music list query: total={total_time:.3f}s, query={query_time:.3f}s, fetch={fetch_time:.3f}s, rows={len(music_list)}, skip={skip}")
+    
     return music_list