Update app.py

app.py

@@ -780,7 +780,7 @@ _LM_LOCK = threading.RLock()
 def get_lm() -> CodeLM:
     global _LM_SINGLETON
     with _LM_LOCK:
-        wanted_name = os.environ.get("EIM_MODEL", "Mungert/Qwen3-Coder-30B-A3B-Instruct-GGUF")
+        wanted_name = os.environ.get("EIM_MODEL", "Qwen/Qwen3-4B-Instruct-2507-FP8")
         wanted_backend = os.environ.get("EIM_BACKEND", "auto")
         if _LM_SINGLETON is None or _LM_SINGLETON.model_name != wanted_name or _LM_SINGLETON.backend != CodeLM._choose_backend(wanted_backend):
             _LM_SINGLETON = CodeLM(wanted_name, wanted_backend)