Update app.py

app.py

@@ -49,7 +49,7 @@ class AlertManager:
             logging.warning("No 'alert_sound_path' found in config.")
             return
         try:
-            data, sr = sf.read(wav_path, dtype="float32")
+            data, sr = sf.read(wav_path, dtype="int16")
             self.alert_data = data
             self.sample_rate = sr
             logging.info(f"Loaded alert sound: {wav_path} ({len(self.alert_data)/self.sample_rate:.2f}s)")