refactor: rename the theme brand and every identifier from AKSRT to Jio

Full-project rename. `git grep -i aksrt` is now empty apart from the
DBMigrator 3.3.0 changelog note that documents the rename itself.

Code identifiers
- PHP namespace AKSRT\ -> Jio\ (composer PSR-4 + 378 declarations)
- global constants AKSRT_* -> JIO_* (VERSION/DIR/URI, PAY_TYPE_*, CAPTCHA_*)
- procedural functions, hooks, options, meta keys, table names,
  cookies, query vars, ajax actions and nonces: aksrt_ -> jio_
- text domain aksrt -> jio; Theme Name -> Jio
- JS globals: aksrtData/aksrtAdminData/... -> jioData/jioAdminData/...,
  window.AKSRTCaptcha & friends -> window.JioCaptcha, Aksrt* -> Jio*
- Vue components Aks*.vue -> Jio*.vue (15 files renamed + imports)
- CSS classes/data-attrs/custom properties: aksrt- -> jio-
- REST namespace aksrt/v1 -> jio/v1 (incl. payment gateway callbacks)

Storage layer
- DB tables {prefix}aksrt_* -> {prefix}jio_*; SCHEMA_VERSION 3.2.0 -> 3.3.0
  so dbDelta creates the new names on install
- widget id_base aksrt_widget_* -> jio_widget_*
- uninstall.php drop list rebuilt from the actual migrator tables
  (dropped 3 stale entries, added the 17 missing ones)

Removed
- hardcoded https://api.aksrt.com/version.json default update endpoint;
  get_endpoint() now reads the 「更新端点」 setting and do_check() no-ops
  when it is empty

Files renamed: inc/helpers/aksrt-*.php -> jio-*.php (54),
assets/admin/src/components/form/Aks*.vue -> Jio*.vue (15).
Build artifacts regenerated: assets/css/build, assets/js/runtime,
assets/admin/build.

Verified: audit-psr4-paths errors=0, audit-admin-contracts errors=0
(warnings=56, unchanged baseline), 813/813 widget-system tests,
44/44 phpunit, php -l clean across all PHP.

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

assets/admin/src/pages/permissions/PermissionsCapabilities.vue

@@ -1,5 +1,5 @@
 <template>
-  <div class="aksrt-page-container">
+  <div class="jio-page-container">
     <PageHeader
       title="基本权限 / 能力矩阵"
       desc="统一管理用户治理、投稿和评论的角色能力矩阵。"
@@ -17,8 +17,8 @@
 
 
     <n-spin :show="loading" style="width: 100%; min-height: 240px;">
-      <n-card class="aksrt-section-card" v-if="summary.cap_count">
-        <div class="aksrt-section-header">
+      <n-card class="jio-section-card" v-if="summary.cap_count">
+        <div class="jio-section-header">
           <h3>矩阵概览</h3>
         </div>
         <n-space>
@@ -28,12 +28,12 @@
         </n-space>
       </n-card>
 
-      <n-card v-for="group in groups" :key="group.key" class="aksrt-section-card">
+      <n-card v-for="group in groups" :key="group.key" class="jio-section-card">
         <template #header>
-          <div class="aksrt-cap-matrix__header">
+          <div class="jio-cap-matrix__header">
             <div>
-              <h3 class="aksrt-cap-matrix__title">{{ group.title }}</h3>
-              <p class="aksrt-cap-matrix__desc">共 {{ group.items.length }} 项能力</p>
+              <h3 class="jio-cap-matrix__title">{{ group.title }}</h3>
+              <p class="jio-cap-matrix__desc">共 {{ group.items.length }} 项能力</p>
             </div>
           </div>
         </template>
@@ -48,7 +48,7 @@
         />
       </n-card>
 
-      <div class="aksrt-form-actions">
+      <div class="jio-form-actions">
         <n-button type="primary" :loading="saving" @click="handleSave">保存能力矩阵</n-button>
       </div>
     </n-spin>
@@ -117,7 +117,7 @@ function buildColumns(group) {
       key: 'label',
       fixed: 'left',
       width: 280,
-      render: (row) => h('div', { class: 'aksrt-cap-matrix__cap' }, [
+      render: (row) => h('div', { class: 'jio-cap-matrix__cap' }, [
         h('strong', row.label),
         h('code', row.cap_id),
       ]),
@@ -148,7 +148,7 @@ function buildColumns(group) {
 function renderCapCell(row, col) {
   const hidden = !(row.visible_columns || []).includes(col)
   if (hidden) {
-    return h('span', { class: 'aksrt-cap-matrix__empty' }, '—')
+    return h('span', { class: 'jio-cap-matrix__empty' }, '—')
   }
 
   if (!userCaps[row.cap_id]) {
@@ -209,40 +209,40 @@ async function handleSave() {
 </script>
 
 <style scoped>
-.aksrt-cap-matrix__header {
+.jio-cap-matrix__header {
   display: flex;
   align-items: center;
   justify-content: space-between;
 }
 
-.aksrt-cap-matrix__title {
+.jio-cap-matrix__title {
   margin: 0;
   font-size: 15px;
   font-weight: 600;
 }
 
-.aksrt-cap-matrix__desc {
+.jio-cap-matrix__desc {
   margin: 4px 0 0;
   font-size: 12px;
-  color: var(--aksrt-color-muted);
+  color: var(--jio-color-muted);
 }
 
-.aksrt-cap-matrix__cap {
+.jio-cap-matrix__cap {
   display: flex;
   flex-direction: column;
   gap: 4px;
 }
 
-.aksrt-cap-matrix__cap code {
+.jio-cap-matrix__cap code {
   font-size: 11px;
   color: #667085;
 }
 
-.aksrt-cap-matrix__empty {
+.jio-cap-matrix__empty {
   color: #c0c4cc;
 }
 
-.aksrt-form-actions {
+.jio-form-actions {
   display: flex;
   justify-content: flex-end;
   margin-top: 16px;