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/site-security-contract.test.cjs

@@ -48,7 +48,7 @@ test('security settings are consumed at runtime and initialized on boot', () =>
   const bootstrap = read('functions.php');
 
   assert.match(runtime, /public static function get_security_settings\(\): array/);
-  assert.match(bootstrap, /\\AKSRT\\Extensions\\SecurityHardening::get_instance\(\)->init\(\)/);
+  assert.match(bootstrap, /\\Jio\\Extensions\\SecurityHardening::get_instance\(\)->init\(\)/);
 });
 
 test('hardening switches wire the documented WordPress hooks', () => {
@@ -74,7 +74,7 @@ test('verification-code sends are funneled through the configurable send limiter
 
   assert.match(sms, /SendLimit::check\(\$phone\)/);
   assert.match(sms, /SendLimit::record\(\$phone\)/);
-  assert.doesNotMatch(sms, /RATE_LIMIT|DAILY_LIMIT|aksrt_sms_rate_|aksrt_sms_daily_/);
+  assert.doesNotMatch(sms, /RATE_LIMIT|DAILY_LIMIT|jio_sms_rate_|jio_sms_daily_/);
   assert.match(sendLimit, /security_captcha_send_cooldown/);
   assert.match(sendLimit, /security_captcha_to_hour/);
   assert.match(sendLimit, /security_captcha_to_day/);
@@ -104,17 +104,17 @@ test('content brush limits are wired into post, comment, upload, register, and o
 });
 
 test('phone masking is shared by the account UI and adapts to international numbers', () => {
-  const helper = read('inc/helpers/aksrt-phone.php');
+  const helper = read('inc/helpers/jio-phone.php');
   const bootstrap = read('inc/bootstrap.php');
   const template = read('inc/helpers/user-center-renderers/settings-account.php');
 
-  assert.match(bootstrap, /inc\/helpers\/aksrt-phone\.php/);
-  assert.match(helper, /function aksrt_phone_mask_parts\(string \$phone\): \?array/);
-  assert.match(helper, /function aksrt_phone_mask_display\(string \$phone\): string/);
+  assert.match(bootstrap, /inc\/helpers\/jio-phone\.php/);
+  assert.match(helper, /function jio_phone_mask_parts\(string \$phone\): \?array/);
+  assert.match(helper, /function jio_phone_mask_display\(string \$phone\): string/);
   assert.match(helper, /min\(11, max\(4, \$length - 7\)\)/);
   assert.doesNotMatch(template, /substr_replace\(\$account_phone, '\*\*\*\*', 3, 4\)/);
-  assert.match(template, /aksrt_phone_mask_parts\(\$account_phone\)/);
-  assert.match(template, /aksrt_phone_mask_display\(\$account_phone\)/);
+  assert.match(template, /jio_phone_mask_parts\(\$account_phone\)/);
+  assert.match(template, /jio_phone_mask_display\(\$account_phone\)/);
 });
 
 test('site security runtime contract harness passes', () => {