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>

tests/widget-system/invite-admin-harness.php

@@ -1,16 +1,16 @@
 <?php
 /** WordPress-free render harness for the native invite admin page. */
-namespace AKSRT\Core {
+namespace Jio\Core {
     final class DBMigrator {
-        public static function table($key) { return 'wp_aksrt_' . $key; }
+        public static function table($key) { return 'wp_jio_' . $key; }
     }
 }
 namespace {
     define('ABSPATH', __DIR__);
     define('ARRAY_A', 'ARRAY_A');
     $root = dirname(__DIR__, 2);
-    define('AKSRT_DIR', $root);
-    define('AKSRT_URI', 'https://example.test/theme');
+    define('JIO_DIR', $root);
+    define('JIO_URI', 'https://example.test/theme');
 
     class WP_Error {
         public $code;
@@ -88,10 +88,10 @@ namespace {
             return ['all_count' => 2, 'unused_count' => 1, 'used_count' => 1];
         }
         public function get_results($sql, $format = null) {
-            if (str_contains($sql, 'FROM wp_aksrt_invite_code_usage u')) {
+            if (str_contains($sql, 'FROM wp_jio_invite_code_usage u')) {
                 return [['code_id' => 41, 'user_id' => 7, 'used_at' => '2026-10-30 11:00:00', 'display_name' => 'Admin"><script>alert(1)</script>']];
             }
-            if (str_contains($sql, 'SELECT * FROM wp_aksrt_invite_code')) {
+            if (str_contains($sql, 'SELECT * FROM wp_jio_invite_code')) {
                 return [
                     [
                         'id' => 41,
@@ -133,18 +133,18 @@ namespace {
     require $root . '/src/Admin/Native/UsersMenusInviteCode.php';
 
     final class InviteAdminProbe {
-        use \AKSRT\Admin\Native\UsersMenusInviteCode;
+        use \Jio\Admin\Native\UsersMenusInviteCode;
     }
 
     $_GET = [
-        'page' => 'aksrt_invite_codes',
+        'page' => 'jio_invite_codes',
         'status' => 'used',
         's' => 'search <script>alert(2)</script> & phrase',
         'remark' => 'campaign & east',
         'orderby' => 'code',
         'desc' => 'ASC',
-        'aksrt_inv_title' => '<script>alert(1)</script>Completed',
-        'aksrt_inv_msg' => '<img src=x onerror=alert(1)>notice',
+        'jio_inv_title' => '<script>alert(1)</script>Completed',
+        'jio_inv_msg' => '<img src=x onerror=alert(1)>notice',
     ];
     $probe = new InviteAdminProbe();
     ob_start();
@@ -152,12 +152,12 @@ namespace {
     $page = ob_get_clean();
 
     $GLOBALS['assets'] = [];
-    $probe->enqueue_invite_assets('users_page_aksrt_messages');
+    $probe->enqueue_invite_assets('users_page_jio_messages');
     $wrong_hook_assets = $GLOBALS['assets'];
-    $probe->enqueue_invite_assets('users_page_aksrt_invite_codes');
+    $probe->enqueue_invite_assets('users_page_jio_invite_codes');
     $page_assets = $GLOBALS['assets'];
 
-    $service = \AKSRT\Payment\InviteCode::get_instance();
+    $service = \Jio\Payment\InviteCode::get_instance();
     $guard = new \ReflectionMethod($service, 'guard_and_redirect');
     $list_result = $service->list_codes(['status' => 'used']);
     $import_lines = [];