Update app.py

app.py

@@ -2030,7 +2030,17 @@ def create_gradio_interface():
                         ], f, indent=2)
                 except Exception as e:
                     print(f"[WARN] Could not persist KPI snapshots: {e}")
-                return history, thinking
+                # Convert history to Gradio Chatbot format: list of [user, assistant] pairs
+                formatted_history = []
+                temp = []
+                for h in history:
+                    if h["role"] == "user":
+                        temp = [h["content"]]
+                    elif h["role"] == "assistant" and temp:
+                        temp.append(h["content"])
+                        formatted_history.append(temp)
+                        temp = []
+                return formatted_history, thinking
             
             msg.submit(respond, [msg, chatbot], [chatbot, thinking_box])
             send_btn.click(respond, [msg, chatbot], [chatbot, thinking_box])