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/js/admin-coupons.js

@@ -2,11 +2,11 @@
 (function () {
   'use strict';
 
-  var root = document.querySelector('.aksrt-coupons-page');
+  var root = document.querySelector('.jio-coupons-page');
   if (!root) return;
-  var toast = root.querySelector('[data-aksrt-coupon-toast]');
+  var toast = root.querySelector('[data-jio-coupon-toast]');
   var toastTimer;
-  var forms = Array.from(root.querySelectorAll('[data-aksrt-coupon-form]'));
+  var forms = Array.from(root.querySelectorAll('[data-jio-coupon-form]'));
 
   function notify(key) {
     if (!toast) return;
@@ -20,7 +20,7 @@
   function syncForm(form) {
     var type = form.elements.type;
     var value = form.elements.value;
-    var unit = form.querySelector('[data-aksrt-coupon-unit]');
+    var unit = form.querySelector('[data-jio-coupon-unit]');
     if (type && value) {
       var percent = type.value === 'percent';
       value.step = percent ? '1' : '0.01';
@@ -37,10 +37,10 @@
   }
 
   function lockScroll() {
-    document.documentElement.classList.toggle('aksrt-coupons-modal-open', !!root.querySelector('dialog[open]'));
+    document.documentElement.classList.toggle('jio-coupons-modal-open', !!root.querySelector('dialog[open]'));
   }
 
-  root.querySelectorAll('.aksrt-coupon-dialog').forEach(function (dialog) {
+  root.querySelectorAll('.jio-coupon-dialog').forEach(function (dialog) {
     if (typeof dialog.showModal !== 'function') return;
     var opener = null;
     var startedOutside = false;
@@ -54,7 +54,7 @@
       if (!form.dataset.submitting) dialog.close();
     }
 
-    root.querySelectorAll('[data-aksrt-dialog-open="' + dialog.id + '"]').forEach(function (button) {
+    root.querySelectorAll('[data-jio-dialog-open="' + dialog.id + '"]').forEach(function (button) {
       button.addEventListener('click', function () {
         opener = button;
         syncForm(form);
@@ -62,7 +62,7 @@
         lockScroll();
       });
     });
-    dialog.querySelectorAll('[data-aksrt-dialog-close]').forEach(function (button) {
+    dialog.querySelectorAll('[data-jio-dialog-close]').forEach(function (button) {
       button.addEventListener('click', requestClose);
     });
     dialog.addEventListener('pointerdown', function (event) {
@@ -83,7 +83,7 @@
   });
 
   forms.forEach(function (form) {
-    var submit = form.querySelector('[data-aksrt-coupon-submit]');
+    var submit = form.querySelector('[data-jio-coupon-submit]');
     if (submit) submit.setAttribute('data-idle-label', submit.textContent);
     form.addEventListener('change', function () { syncForm(form); });
     form.addEventListener('submit', function (event) {
@@ -132,7 +132,7 @@
   // bfcache 返回时恢复按钮，避免表单停在提交中状态。
   window.addEventListener('pageshow', function () {
     forms.forEach(function (form) {
-      var submit = form.querySelector('[data-aksrt-coupon-submit]');
+      var submit = form.querySelector('[data-jio-coupon-submit]');
       delete form.dataset.submitting;
       if (submit) {
         submit.disabled = false;