feat: enforce playlist selection before starting the game and update playlist handling

src/server/game/deck.js

@@ -108,13 +108,6 @@ export async function loadDeck(playlistId = 'default') {
       })
     );
     tracks.push(...batchTracks);
-
-    // Optional: Log progress for large playlists
-    if (files.length > 100 && (i + BATCH_SIZE) % 100 === 0) {
-      console.log(
-        `Loading playlist ${playlistId}: ${Math.min(i + BATCH_SIZE, files.length)}/${files.length} tracks processed`
-      );
-    }
   }
 
   console.log(`Loaded ${tracks.length} tracks from playlist: ${playlistId}`);