public static function init(): void {
        // Hooks immer registrieren — TEC-Prüfung erfolgt in add_menu(),
        // wo der admin_menu-Hook nach init() feuert und CPTs garantiert registriert sind.
        add_action( 'admin_menu',            [ __CLASS__, 'add_menu' ] );
        add_action( 'admin_enqueue_scripts', [ __CLASS__, 'enqueue' ] );

        // Template-Download (GET, sehr früh)
        add_action( 'admin_init', [ __CLASS__, 'maybe_send_template' ] );

        // Form-Handler via admin-post
        add_action( 'admin_post_tcci_upload', [ __CLASS__, 'handle_upload' ] );
        add_action( 'admin_post_tcci_import', [ __CLASS__, 'handle_import' ] );
    }

    public static function add_menu(): void {
        // Hier (admin_menu) sind CPTs bereits registriert → Prüfung ist zuverlässig.
        if ( ! post_type_exists( 'tribe_events' ) ) {
            add_action( 'admin_notices', [ __CLASS__, 'notice_missing_tec' ] );
            return;
        }

        add_submenu_page(
            'edit.php?post_type=tribe_events',
            'CSV Import — The Events Calendar',
            'CSV Import',
            'manage_options',
            self::PAGE_SLUG,
            [ __CLASS__, 'render_page' ]
        );
    }