add Chop Suey! by System of a Down

128 BPM, 2:09, from Oakridge ITG Cab 2011 Songpack 3.
Placed after Meet Me Halfway in the front section.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/features/song-select/song-data.ts

@@ -57,6 +57,20 @@ export const SONGS: Song[] = [
     bgUrl: '/songs/meet-me-halfway/bg.png',
     bannerUrl: '/songs/meet-me-halfway/bn.png',
   },
+  {
+    id: 'chop-suey',
+    title: 'Chop Suey!',
+    artist: 'System of a Down',
+    bpm: 128,
+    difficulty: 4,
+    duration: '2:09',
+    genre: 'Metal',
+    color: '#B71C1C',
+    chartUrl: '/songs/chop-suey/chart.ssc',
+    audioUrl: '/songs/chop-suey/audio.ogg',
+    bgUrl: '/songs/chop-suey/bg.png',
+    bannerUrl: '/songs/chop-suey/bn.png',
+  },
   {
     id: 'axion',
     title: 'Axion',