永久会员与模板库后台化：预览门控、轻量首页与 Admin CRUD

- 会员改为永久激活方案；云端文件不再拦截非会员；预览弹窗内导出/打印才校验
- 首页最近文件支持本地记录，登录后与云端合并；移除独立会员页与订阅页
- 模板库入库管理：soon_templates 表、Admin 上传 CRUD、/templates 轻量列表与按需下载

Co-authored-by: Cursor <cursoragent@cursor.com>

frontend-web/pages/index.web.html

@@ -19,8 +19,6 @@
   <link rel="stylesheet" href="../assets/css/layer-soon.css">
 
   <link rel="stylesheet" href="../assets/css/index.css">
-  <link rel="stylesheet" href="../assets/css/subscribe-gate.css">
-  <link rel="stylesheet" href="../assets/css/member.css">
 
 </head>
 
@@ -141,14 +139,9 @@
   <script src="../js/common/auth-redirect.js"></script>
 
   <script src="../js/common/auth-session.js"></script>
-
-  <script src="../js/common/member-pay-core.js"></script>
-  <script src="../js/common/member-plan-core.js"></script>
   <script src="../js/common/cloud-files.js"></script>
   <script src="../vendor/layui/layui.js"></script>
   <script src="../vendor/js/qrcode.min.js"></script>
-  <script src="../js/common/soon-toast.js"></script>
-  <script src="../js/common/member-subscribe.js"></script>
 
   <script src="../js/common/asset-base.js"></script>
 
@@ -166,6 +159,7 @@
     if (window.soonLoadMembership) {
       window.soonLoadMembership().then(function () {
         if (window.soonRefreshPortalIdentity) window.soonRefreshPortalIdentity();
+        if (window.soonReloadRecentFiles) window.soonReloadRecentFiles();
       });
     }
   </script>