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/ticket-lifecycle-contract.test.cjs

@@ -68,7 +68,7 @@ test('default status cannot be edited or deleted in the admin surface', () => {
   const config = read('src/Ticket/TicketConfigRest.php');
   assert.equal((config.match(/!empty\(\$row\['is_default'\]\)/g) || []).length, 2,
     'both update and delete must honour is_default');
-  assert.match(config, /'aksrt_ticket_status_default'/);
+  assert.match(config, /'jio_ticket_status_default'/);
 
   // 原生后台不再维护状态定义，因此不再出现 is_default 判断。
   const native = read('src/Admin/Native/UsersMenusTicketsCenter.php');
@@ -78,8 +78,8 @@ test('default status cannot be edited or deleted in the admin surface', () => {
   // 删除前还要确认没有工单挂在该状态/部门下（守卫在 TicketConfigRest trait 中）。
   assert.match(config, /count_by_status\(\(string\) \$row\['status_key'\]\) > 0/);
   assert.match(config, /count_by_type\(\$id\) > 0/);
-  assert.match(config, /'aksrt_ticket_status_in_use'/);
-  assert.match(config, /'aksrt_ticket_type_in_use'/);
+  assert.match(config, /'jio_ticket_status_in_use'/);
+  assert.match(config, /'jio_ticket_type_in_use'/);
 
   const repo = read('src/Ticket/TicketRepository.php');
   assert.match(repo, /public function count_by_status\(string \$status_key\): int/);
@@ -113,13 +113,13 @@ test('ticket numbers are unique and settings-driven', () => {
 
 test('notifications go through the message inbox with deep links', () => {
   const notifier = read('src/Ticket/TicketNotifier.php');
-  // 所有通知都走 Message::send()，持久化到 aksrt_notification。
-  assert.match(notifier, /\\AKSRT\\Messages\\Message::get_instance\(\)->send\(/);
-  assert.match(notifier, /class_exists\('\\AKSRT\\Messages\\Message'\)/);
+  // 所有通知都走 Message::send()，持久化到 jio_notification。
+  assert.match(notifier, /\\Jio\\Messages\\Message::get_instance\(\)->send\(/);
+  assert.match(notifier, /class_exists\('\\Jio\\Messages\\Message'\)/);
   // 新建工单通知全体管理员，催单只通知跟进人。
   assert.match(notifier, /get_users\(\['role' => 'administrator', 'fields' => 'ID', 'number' => 20\]\)/);
   assert.match(notifier, /\$admin_id = \(int\) \(\$ticket\['admin_id'\] \?\? 0\);/);
   // 深链分别指向后台工单页与用户中心工单位。
-  assert.match(notifier, /admin_url\('users\.php\?page=aksrt_tickets'\)/);
-  assert.match(notifier, /aksrt_get_user_center_url\('tickets'\)/);
+  assert.match(notifier, /admin_url\('users\.php\?page=jio_tickets'\)/);
+  assert.match(notifier, /jio_get_user_center_url\('tickets'\)/);
 });