App 2.44.0: the pumpkin light follows the kick drum, behind a switch

MusicPulse reads 40-120 Hz and lights only on jumps of the bass, so
held notes and bass lines stay dark. Settings gets "Pumpkin light
follows the music" (Halloween only, off by default); off, the audio
analyser never starts.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01LhzAVaUyqcw5PkGjz4mWW6

app/src/test/java/com/evsuite/abrp/MusicPulseTest.java

@@ -36,6 +36,45 @@ public class MusicPulseTest {
         assertEquals(0f, last, 0f);
     }
 
+    @Test
+    public void aHeldBassNoteLightsOnlyItsStart() {
+        MusicPulse p = new MusicPulse();
+        for (int i = 0; i < 50; i++) p.update(0.05f, STEP);
+        assertTrue(p.update(0.4f, STEP) > 0.8f);
+        float last = 1f;
+        for (int i = 0; i < 25; i++) last = p.update(0.4f, STEP);
+        assertEquals(0f, last, 0f);
+    }
+
+    @Test
+    public void aWobblingBassLineStaysDark() {
+        MusicPulse p = new MusicPulse();
+        for (int i = 0; i < 50; i++) p.update(0.3f, STEP);
+        float top = 0f;
+        for (int i = 0; i < 200; i++) top = Math.max(top, p.update(i % 3 == 0 ? 0.33f : 0.3f, STEP));
+        assertEquals(0f, top, 0f);
+    }
+
+    @Test
+    public void aSwellingNoteStaysDark() {
+        MusicPulse p = new MusicPulse();
+        for (int i = 0; i < 50; i++) p.update(0.1f, STEP);
+        float top = 0f;
+        for (int i = 0; i < 100; i++) top = Math.max(top, p.update(0.1f + i * 0.004f, STEP));
+        assertEquals(0f, top, 0f);
+    }
+
+    @Test
+    public void aKickOverABassLineLights() {
+        MusicPulse p = new MusicPulse();
+        float top = 0f;
+        for (int i = 0; i < 300; i++) {
+            float v = p.update(i % 12 == 0 ? 0.6f : (i % 3 == 0 ? 0.33f : 0.3f), STEP);
+            if (i > 100) top = Math.max(top, v);
+        }
+        assertTrue("a kick lights it, got " + top, top > 0.8f);
+    }
+
     @Test
     public void quietAndLoudSongsPulseAlike() {
         assertEquals(beatOf(0.5f), beatOf(0.05f), 0.02f);