feat(ux): forum pay-hide depth, clogin OAuth, ban appeals admin, posts-navs widget

- Forum compose/save/draft: VIP prices, partial hide, coupons + shortcode tools
- Rainbow clogin aggregate login (rewrite + schema + CLoginClient)
- Native ban appeals tab: approve/reject + lift ban + notify
- WidgetPostsNavs + register missing forum widgets
- Submit editor shortcodes: login/reply/vip/payshow

assets/js/front-submit.js

@@ -543,9 +543,13 @@
         e.preventDefault();
         var type = btn.getAttribute('data-insert-shortcode');
         if (type === 'hide') {
-          insertEditorContent('[hidecontent type="logged"]hidden[/hidecontent]');
+          insertEditorContent('[hidecontent type="login"]' + (i18n.hidePlaceholder || '隐藏内容') + '[/hidecontent]');
         } else if (type === 'payshow') {
-          insertEditorContent('[hidecontent type="payshow"]paid content[/hidecontent]');
+          insertEditorContent('[hidecontent type="payshow"]' + (i18n.payPlaceholder || '付费可见内容') + '[/hidecontent]');
+        } else if (type === 'reply') {
+          insertEditorContent('[hidecontent type="reply"]' + (i18n.replyPlaceholder || '回复后可见') + '[/hidecontent]');
+        } else if (type === 'vip') {
+          insertEditorContent('[vip]' + (i18n.vipPlaceholder || 'VIP 可见内容') + '[/vip]');
         }
       });
     },