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/email-system-contract.test.cjs

@@ -36,16 +36,16 @@ test('forum-only events stay out of the email catalog', () => {
 })
 
 test('email settings keep one canonical SMTP schema', () => {
-  assert.match(templates, /'option_key'\s*=>\s*'aksrt_settings'/)
+  assert.match(templates, /'option_key'\s*=>\s*'jio_settings'/)
   assert.match(templates, /'mail_passwd'.*'secret'\s*=>\s*true/)
   assert.match(templates, /'email_test_send'.*'ui_only'\s*=>\s*true/)
   assert.match(mail, /Settings::get_all\(\)/)
   assert.match(mail, /'auth'\s*=>\s*\$username\s*!==\s*''\s*&&\s*\$password\s*!==\s*''/)
   assert.doesNotMatch(templates, /mail_smtpauth/)
   assert.doesNotMatch(mail, /mail_smtpauth/)
-  assert.doesNotMatch(settings, /aksrt_mail_smtp/)
-  assert.doesNotMatch(globalController, /aksrt_mail_config|\/settings\/mail'/)
-  assert.doesNotMatch(userController, /aksrt_mail_templates|mail-templates/)
+  assert.doesNotMatch(settings, /jio_mail_smtp/)
+  assert.doesNotMatch(globalController, /jio_mail_config|\/settings\/mail'/)
+  assert.doesNotMatch(userController, /jio_mail_templates|mail-templates/)
 })
 
 test('email event schema exposes only notification switches', () => {
@@ -76,7 +76,7 @@ test('SMTP authentication and failures use the canonical mail service', () => {
   assert.doesNotMatch(coreHooks, /\$phpmailer->setFrom\(/)
   assert.match(mail, /add_action\('wp_mail_failed',\s*\$capture_failure\)/)
   assert.match(mail, /remove_action\('wp_mail_failed',\s*\$capture_failure\)/)
-  assert.match(mail, /error_log\('\[AKSRT\] SMTP 测试失败：'/)
+  assert.match(mail, /error_log\('\[Jio\] SMTP 测试失败：'/)
   assert.match(globalController, /详细原因已写入服务器错误日志/)
 })
 
@@ -102,9 +102,9 @@ test('only the canonical mail service calls wp_mail', () => {
 
 test('financial and account hooks are wired to the notification service', () => {
   for (const hook of [
-    'aksrt_order_paid', 'aksrt_order_status_changed', 'aksrt_asset_transaction_committed',
-    'aksrt_withdrawal_submitted', 'aksrt_withdrawal_status_changed',
-    'aksrt_user_phone_changed',
+    'jio_order_paid', 'jio_order_status_changed', 'jio_asset_transaction_committed',
+    'jio_withdrawal_submitted', 'jio_withdrawal_status_changed',
+    'jio_user_phone_changed',
   ]) {
     assert.match(notifications, new RegExp(`add_action\\('${hook}'`), hook)
   }