feat(pages): 1:1 网址导航 page-links (zibll links.php)

Add WP bookmarks-based navigation page with multi-category sticky nav,
search-engine cover, front submit modal/AJAX, page meta, and styles.

inc/core-hooks/part-2.php

@@ -7,12 +7,11 @@ defined('ABSPATH') || exit;
 add_filter('show_admin_bar', '__return_false');
 
 // ============================================================
-// 隐藏不需要的默认菜单项
+// WordPress 链接管理（网址导航 / 书签）
+// zibll enables link_manager; AKSRT keeps it for page-links.
 // ============================================================
 
-add_action('admin_menu', function () {
-    remove_menu_page('link-manager.php');
-});
+add_filter('pre_option_link_manager_enabled', '__return_true');
 
 // ============================================================
 // Gravatar 头像源替换（4层拦截：get_avatar_url / pre_get_avatar_data / avatar_defaults / ob_start 兜底）