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/admin/src/main.js

@@ -14,35 +14,35 @@ app.use(NaiveUI)
 
 // 全局错误处理
 app.config.errorHandler = (err, vm, info) => {
-  console.error('[AKSRT] 全局错误:', err, info)
+  console.error('[Jio] 全局错误:', err, info)
 }
 
 // 兜底：立即显示加载状态（防止白屏）
 function showFallback(el) {
   el.innerHTML = '<div style="padding:40px;text-align:center;color:#666;font-family:sans-serif;">'
-    + '<p style="font-size:18px;margin-bottom:8px;">AKSRT 正在加载...</p>'
+    + '<p style="font-size:18px;margin-bottom:8px;">Jio 正在加载...</p>'
     + '<p style="font-size:13px;color:#999;">如果长时间停留在此页面，请按 F12 查看控制台错误</p>'
     + '</div>'
 }
-showFallback(document.getElementById('aksrt-admin-app') || document.body.appendChild(
-  Object.assign(document.createElement('div'), { id: 'aksrt-admin-app' })
+showFallback(document.getElementById('jio-admin-app') || document.body.appendChild(
+  Object.assign(document.createElement('div'), { id: 'jio-admin-app' })
 ))
 
 /**
  * 获取或创建一个干净的挂载容器
  * 核心问题：WordPress 后台的 jQuery/脚本会在页面加载后持续操作 DOM，
- * 导致 PHP 输出的 <div id="aksrt-admin-app"> 可能被外部修改或其兄弟节点被移除，
+ * 导致 PHP 输出的 <div id="jio-admin-app"> 可能被外部修改或其兄弟节点被移除，
  * Vue patch 时遍历到 null 节点 → nextSibling 报错。
  *
  * 解决方案：在挂载前一刻，动态创建一个全新的容器元素替换旧的，
  * 确保该节点及其父级在 Vue 接管前不被任何外部脚本污染。
  */
 function getCleanContainer() {
-  const existing = document.getElementById('aksrt-admin-app')
+  const existing = document.getElementById('jio-admin-app')
   if (!existing) {
     // 极端情况：PHP 没有输出容器，手动创建
     const fresh = document.createElement('div')
-    fresh.id = 'aksrt-admin-app'
+    fresh.id = 'jio-admin-app'
     document.body.appendChild(fresh)
     return fresh
   }
@@ -53,13 +53,13 @@ function getCleanContainer() {
   if (!parent) {
     // 旧容器已脱离文档树，重新创建
     const fresh = document.createElement('div')
-    fresh.id = 'aksrt-admin-app'
+    fresh.id = 'jio-admin-app'
     document.body.appendChild(fresh)
     return fresh
   }
 
   const fresh = document.createElement('div')
-  fresh.id = 'aksrt-admin-app'
+  fresh.id = 'jio-admin-app'
 
   // 将旧容器的位置信息转移给新容器（保留 fallback 内容）
   fresh.innerHTML = existing.innerHTML || ''
@@ -91,12 +91,12 @@ router.isReady().then(() => {
           styleMountTarget.value = container
           app.mount(container)
         } catch (err) {
-          console.error('[AKSRT] Vue 挂载失败:', err)
+          console.error('[Jio] Vue 挂载失败:', err)
           showError(getCleanContainer(), err)
         }
       })
     })
   })
 }).catch((err) => {
-  console.error('[AKSRT] Router 初始化失败:', err)
+  console.error('[Jio] Router 初始化失败:', err)
 })