feat(links): move friend links to native WordPress links with review flow

- enable the native Links manager and drop the custom friend-link option/REST path
- add per-page link settings for the friends template
- render link categories from get_bookmarks() with search and page-content options
- add a validated public link submission endpoint with logo upload, captcha, rate limiting and duplicate checks
- create pending links for review and notify administrators by email and in-app message
- add native Links admin pending count, columns and edit notes
- cover the new submission and cleanup contracts

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

assets/admin/src/api/modules/global.js

@@ -12,11 +12,6 @@ export const globalApiMethods = {
   getFloatingButtons() { return this.request('/settings/floating-buttons') },
   saveFloatingButtons(data) { return this.request('/settings/floating-buttons', { method: 'POST', body: JSON.stringify(data) }) },
 
-  getFriendLinks() { return this.request('/friend-links') },
-  addFriendLink(data) { return this.request('/friend-links', { method: 'POST', body: JSON.stringify(data) }) },
-  deleteFriendLink(id) { return this.request(`/friend-links/${id}`, { method: 'DELETE' }) },
-  reorderFriendLinks(ids) { return this.request('/friend-links/reorder', { method: 'POST', body: JSON.stringify({ ids }) }) },
-
   getCmsFeatures() { return this.request('/settings/cms-features') },
   saveCmsFeatures(cms_features) { return this.request('/settings/cms-features', { method: 'POST', body: JSON.stringify({ cms_features }) }) },
 }

assets/admin/src/schema/sections/permissions/index.js

@@ -87,6 +87,7 @@ export const permissionsSchemas = {
               { label: '打赏用户', value: 'tip_user' },
               { label: '提交工单', value: 'ticket_create' },
               { label: '回复工单', value: 'ticket_reply' },
+              { label: '友情链接申请', value: 'friend_link' },
             ],
           },
         ],