Update nova_agent.py

nova_agent.py

@@ -10,8 +10,8 @@ class NovaLiteAgent:
         print("NovaLiteAgent initialized.")
         
         # Get AWS credentials from environment variables
-        aws_access_key_id = os.getenv("nova_key")
-        aws_secret_access_key = os.getenv("nova_secret")
+        aws_access_key_id = os.getenv('AWS_ACCESS_KEY_ID')
+        aws_secret_access_key = os.getenv('AWS_SECRET_ACCESS_KEY')
 
         # Initialize the AWS client
         boto3.client(