Update app.py

app.py

@@ -10,7 +10,8 @@ with open("characters.json", "r", encoding="utf-8") as f:
 character_dict = {c["id"]: c for c in characters}
 
 # Hugging Face Inference API
-client = InferenceClient("HuggingFaceH4/zephyr-7b-beta")
+token = os.environ.get("HUGGINGFACEHUB_API_TOKEN")
+client = InferenceClient("HuggingFaceH4/zephyr-7b-beta", token=token)
 
 # Hàm phản hồi hội thoại
 def respond(message, history, character_id, max_tokens, temperature, top_p):