Fix missing answers_payload.append in loop

app.py

@@ -68,8 +68,8 @@ CRITICAL RULES:
 
 def build_agent():
     model = InferenceClientModel(
-        model_id="HuggingFaceH4/zephyr-7b-beta",
-        token=os.getenv("GAIA"),
+        model_id="llama-3.1-8b-instant",
+        token=os.getenv("HF"),
         max_tokens=2048,
         temperature=0.1,
     )