def get_env_var()

in auth.py [0:0]

• 5 lines of code
• 2 McCabe index (conditional complexity)

def get_env_var(name: str, fallback: str = None) -> str:
    """Helper to fetch and log missing environment variables."""
    value = os.getenv(name, fallback)
    if value is None:
        logging.warning(f"[auth] Environment variable '{name}' is not set.")
    return value