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/core/wait-pay-float.js

@@ -4,7 +4,7 @@
  * 订单相关缓存标签失效（下单待支付 / 支付 / 关闭）时，向服务端拉取最新浮窗片段
  * 并替换现有节点；无待支付订单时移除浮窗。
  *
- * @package AKSRT
+ * @package Jio
  */
 (function (window, document) {
   "use strict";
@@ -14,7 +14,7 @@
   var seq = 0;
 
   function loggedIn() {
-    var config = window.aksrtData || window.aksrt || {};
+    var config = window.jioData || window.jio || {};
     return !!config.isLoggedIn;
   }
 
@@ -44,16 +44,16 @@
   }
 
   function refresh() {
-    if (!loggedIn() || !window.AksrtRequest) return;
+    if (!loggedIn() || !window.JioRequest) return;
     var id = ++seq;
-    window.AksrtRequest.get("/orders/wait-pay-float").then(function (result) {
+    window.JioRequest.get("/orders/wait-pay-float").then(function (result) {
       if (id !== seq) return;
       var data = result.data || {};
       render(String(data.html || ""));
     }).catch(function () { /* 保留现有浮窗 */ });
   }
 
-  document.addEventListener("aksrt:cache:invalidated", function (event) {
+  document.addEventListener("jio:cache:invalidated", function (event) {
     if (!touchesOrders(event.detail && event.detail.tags)) return;
     window.clearTimeout(timer);
     timer = window.setTimeout(refresh, 300);