fixed history not being appended

app.py

@@ -70,6 +70,9 @@ def respond(message, history):
         if user_msg: messages.append({"role": "user", "content": user_msg})
         if assistant_msg: messages.append({"role": "assistant", "content": assistant_msg})
     
+    for msg in history:
+        messages.append(msg)
+
     messages.append({"role": "user", "content": message})
 
     response = ""