fix(messages): default message center slug to messages

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

assets/admin/src/schema/sections/users/notifications.js

@@ -5,7 +5,7 @@ export const notificationsSchema = {
   description: '站内通知、通知策略配置。',
   defaults: {
     message_s: true,
-    msg_center_rewrite_slug: 'message',
+    msg_center_rewrite_slug: 'messages',
     message_icon_show: ['nav_menu'],
     message_paginate_type: 'ajax_lists',
     message_user_set: true,
@@ -21,7 +21,7 @@ export const notificationsSchema = {
       icon: 'fa fas fa-cog',
       fields: [
         { key: 'message_s', label: '站内通知总开关', type: 'switch', default: true },
-        { key: 'msg_center_rewrite_slug', label: '消息中心 URL 别名', type: 'input', default: 'message' },
+        { key: 'msg_center_rewrite_slug', label: '消息中心 URL 别名', type: 'input', default: 'messages' },
         { key: 'message_icon_show', label: '通知图标位置', type: 'checkbox', default: ['nav_menu'], options: [{ label: '导航菜单', value: 'nav_menu' }, { label: '头像下拉面板', value: 'avatar_dropdown' }, { label: '用户中心顶部资料卡', value: 'user_center_header' }, { label: '公开主页顶部资料卡', value: 'user_home_header' }] },
         { key: 'message_paginate_type', label: '列表翻页模式', type: 'radio', default: 'ajax_lists', options: [{ label: 'AJAX 追加加载', value: 'ajax_lists' }, { label: '数字翻页按钮', value: 'default' }] },
         { key: 'message_user_set', label: '允许用户设置推送', type: 'switch', default: true, help: '允许用户在前台自行设置通知推送偏好' },