Update app.py

app.py

@@ -53,6 +53,9 @@ def respond(
     messages.extend(history)                     # previous conversation turns
     messages.append({"role": "user", "content": message})  # current user query
 
+
+    MODEL_NAME = _secret("MODEL_NAME")
+    
     # 5️⃣ Stream the response back to the UI
     response = ""
     stream = client.chat.completions.create(