Update app.py

app.py

@@ -17,10 +17,10 @@ import edge_tts
 MAX_MEMORY     = 20
 MAX_NEW_TOKENS = int(os.environ.get("MAX_NEW_TOKENS", "300"))
 TTS_VOICE      = "zh-CN-XiaoyiNeural"
-TTS_RATE       = int(os.environ.get("TTS_RATE",  "-3"))
+TTS_RATE       = int(os.environ.get("TTS_RATE",  "-4"))
 TTS_PITCH      = int(os.environ.get("TTS_PITCH", "7"))
 IMG_DIR        = Path(__file__).parent / "img"
-MODEL_ID       = "Qwen/Qwen2.5-0.5B-Instruct"
+MODEL_ID       = "LiquidAI/LFM2-8B-A1B"
 
 # ══════════════════════════════════════════════════════════════════
 # SYSTEM PROMPT