Update app.py

app.py

@@ -51,8 +51,14 @@ def chat_stream(message, history, model, system_prompt, temperature, max_tokens)
     messages.append({"role": "user", "content": message})
     
     # 4. Append user message to history visually before generating
-    history.append([message, ""])
-    yield history
+    history.append(
+    {
+        "role": "assistant",
+        "content": response
+    }
+)
+
+return history
 
     # 5. Stream from Groq
     try: