Function require_admin 

pub async fn require_admin(
    __arg0: State<App>,
    __arg1: Auth,
    req: Request,
    next: Next,
) -> Result<Response, Error>

Middleware that checks if the current user has admin role (SADM)

This middleware is simpler than check_perm_profile as it doesn’t require a path parameter - it just checks if the authenticated user has admin privileges.