feat: implement movement state machine architecture and add various sound assets

generate_sounds.py

@@ -465,4 +465,26 @@ for i in range(int(sample_rate * flight_duration)):
     swarm_flight_samples.append(math.tanh(raw * 2.0))
 write_wav('assets/sounds/swarm_flight.wav', swarm_flight_samples)
 
+# 23. Vault Sound (Quick airy whoosh + clothing ruffle)
+vault_duration = 0.3
+vault_samples = []
+prev_v = 0.0
+for i in range(int(sample_rate * vault_duration)):
+    t = i / sample_rate
+    noise = random.uniform(-1.0, 1.0)
+    
+    # Airy whoosh
+    alpha = 0.08
+    filtered = prev_v + alpha * (noise - prev_v)
+    prev_v = filtered
+    whoosh_env = math.sin(t * math.pi / vault_duration)
+    whoosh = filtered * whoosh_env * 0.6
+    
+    # Ruffle/grab sound
+    ruffle_env = math.exp(-t * 30.0)
+    ruffle = noise * ruffle_env * 0.2
+    
+    vault_samples.append(whoosh + ruffle)
+write_wav('assets/sounds/vault.wav', vault_samples)
+
 print("Generated all sounds!")