Update app.py

app.py

@@ -4,7 +4,7 @@ from mistralai.client import MistralClient
 from mistralai.models.chat_completion import ChatMessage
 
 # Initialize Mistral client
-api_key = os.getenv("KjFqotgMkZgdJvWR5WCsOyvVS6wtjii6")
+api_key = os.getenv("MISTRAL_API_KEY")
 if not api_key:
     raise ValueError("MISTRAL_API_KEY environment variable tidak ditemukan! Tambahkan di Settings → Variables and secrets.")