/**
 * Dynamic RBAC Helper Functions
 */
function hasPermission($key) {
    global $auth;
    if (isset($auth) && is_object($auth) && method_exists($auth, 'hasPermission')) {
        return $auth->hasPermission($key);
    }
    return false;
}

function requirePermission($key) {
    global $auth;
    if (isset($auth) && is_object($auth) && method_exists($auth, 'requirePermission')) {
        $auth->requirePermission($key);
    } else {
        http_response_code(403);
        die("Access Denied: Permission required.");
    }
}

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