Update app.py

app.py

@@ -78,7 +78,7 @@ def respond(
     # Keep the last 4 conversation pairs (user-assistant)
     messages = [{"role": "system", "content": os.environ.get("CHARACTER_DESC")}]
 
-    for val in history[-10:]:  # Only use the last 4 pairs
+    for val in history:
         if val[0]:
             messages.append({"role": "user", "content": val[0]})
         if val[1]: