feat(user-center): 用户中心前台 1:1 列表/URL/关注/身份

补齐 orders/cart/revenue/messages 页面 URL helper，修复私有中心商务与消息死链，公共主页商品/关注接入真实数据，开启身份 chips governance，并注册消息中心页面模板。

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

inc/helpers/aksrt-user-center.php

@@ -401,7 +401,7 @@ if (!function_exists('aksrt_get_user_center_render_context')) {
 			? aksrt_get_user_dashboard_view($user_id, [
 				'viewer_id'            => $user_id,
 				'include_recent_posts' => false,
-				'include_governance'   => false,
+				'include_governance'   => true,
 			])
 			: [];
 
@@ -453,7 +453,7 @@ if (!function_exists('aksrt_get_user_center_render_context')) {
 			'show_avatar_edit'          => !empty($user_center_settings['avatar_upload']),
 			'avatar_settings_url'       => admin_url('profile.php'),
 			'notification_unread_count' => function_exists('aksrt_get_user_unread_notification_count') ? aksrt_get_user_unread_notification_count($user_id) : 0,
-			'messages_url'              => aksrt_get_user_center_url('notif'),
+			'messages_url'              => function_exists('aksrt_get_messages_page_url') ? aksrt_get_messages_page_url() : '',
 			'per_page'                  => 10,
 			'posts_page'                => max(1, isset($_GET['posts_page']) ? (int) $_GET['posts_page'] : 1),
 			'comments_page'             => max(1, isset($_GET['comments_page']) ? (int) $_GET['comments_page'] : 1),