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/css/frontend/vip-modal.css

@@ -9,11 +9,11 @@
    - 高度 = .modal.flex .modal-content 的 max-height: calc(100vh - 20px)
      + overflow-y: auto（阈值放宽到整屏，正常桌面内容不触发滚动条）
    - 圆角 = .modal-content 的 var(--main-radius)（8px） */
-.aksrt-modal-runtime.aksrt-vip-modal-shell {
+.jio-modal-runtime.jio-vip-modal-shell {
   z-index: 1200;
 }
 
-.aksrt-modal-runtime.aksrt-vip-modal-shell .aksrt-modal-runtime__dialog {
+.jio-modal-runtime.jio-vip-modal-shell .jio-modal-runtime__dialog {
   width: min(600px, calc(100vw - 20px));
   max-height: calc(100vh - 20px);
   overflow: hidden;
@@ -24,12 +24,12 @@
   box-shadow: 0 16px 48px rgba(0, 0, 0, 0.22);
 }
 
-.aksrt-modal-runtime.aksrt-vip-modal-shell .aksrt-modal-runtime__content {
+.jio-modal-runtime.jio-vip-modal-shell .jio-modal-runtime__content {
   padding: 0;
 }
 
 @media (max-width: 768px) {
-  .aksrt-modal-runtime.aksrt-vip-modal-shell.aksrt-modal-runtime--bottom .aksrt-modal-runtime__dialog {
+  .jio-modal-runtime.jio-vip-modal-shell.jio-modal-runtime--bottom .jio-modal-runtime__dialog {
     width: 100%;
     max-width: 100%;
     max-height: calc(100vh - 20px);
@@ -43,7 +43,7 @@
 
 /* 积分兑换会员弹窗：参考主题 refresh_modal 同构静态壳
    （.modal.flex.jc.fade > .modal-dialog.modal-mini.full-sm > .modal-content
-   > .modal-body，由 inc/helpers/aksrt-vip.php 服务端输出）。三点约束：
+   > .modal-body，由 inc/helpers/jio-vip.php 服务端输出）。三点约束：
    - 静止态必须显式隐藏：main.css 的 .flex{display:flex}（后加载、与 bootstrap
      的 .modal{display:none} 同特异性）会让壳永久铺满全屏，叠加 .fade 的
      opacity:0 形成隐形遮罩，拦截整页点击；
@@ -51,35 +51,35 @@
      .flex.jc 双轴居中），与余额充值/购买积分弹窗同构；
    - 入口在会员购买弹窗与 /user/vip/ 页面横条两处，壳需高于 runtime 宿主
      （100050），以复现参考主题在会员弹窗之上再叠一层兑换弹窗的行为。 */
-.modal[data-aksrt-vip-points-modal] {
+.modal[data-jio-vip-points-modal] {
   display: none;
   z-index: 100060;
 }
 
-.modal[data-aksrt-vip-points-modal].in {
+.modal[data-jio-vip-points-modal].in {
   display: flex;
 }
 
-.modal-backdrop[data-aksrt-vip-points-backdrop] {
+.modal-backdrop[data-jio-vip-points-backdrop] {
   z-index: 100055;
 }
 
 /* public.css redeclares .muted-box after legacy utilities, overriding its
    background, radius, and padding utilities. Restore the reference box contract. */
-.modal[data-aksrt-vip-points-modal] .muted-box.padding-h10 {
+.modal[data-jio-vip-points-modal] .muted-box.padding-h10 {
   background-color: var(--this-bg, var(--muted-border-color));
   border-radius: var(--main-radius);
   padding: 10px 15px;
 }
 
-.modal[data-aksrt-vip-points-modal] .muted-box.padding-10,
-.modal[data-aksrt-vip-points-modal] .aksrt-vip-points-desc {
+.modal[data-jio-vip-points-modal] .muted-box.padding-10,
+.modal[data-jio-vip-points-modal] .jio-vip-points-desc {
   background-color: var(--this-bg, var(--muted-border-color));
   border-radius: var(--main-radius);
   padding: 10px;
 }
 
-.modal[data-aksrt-vip-points-modal] .aksrt-vip-points-desc {
+.modal[data-jio-vip-points-modal] .jio-vip-points-desc {
   display: block;
   margin-top: 20px;
   color: var(--muted-2-color, #999);
@@ -125,31 +125,31 @@
 
 /* 会员弹窗骨架屏（pay-vip.js vipSkeleton()）：仿真实弹窗布局——
    用户框 + 等级卡行 + 双列套餐面板。线条/色块与 shimmer 动画复用全局
-   .aksrt-modal-runtime__skeleton-line/-block 与 @keyframes
-   aksrt-modal-skeleton（build/public.min.css 已全局入队）；
+   .jio-modal-runtime__skeleton-line/-block 与 @keyframes
+   jio-modal-skeleton（build/public.min.css 已全局入队）；
    这里只定义 VIP 专属形状（头像圆、tab 卡、双列 grid、按钮条），
    与 .pay-vip-form-row 的 640px 双列阈值保持一致。 */
-.aksrt-vip-modal-skeleton {
+.jio-vip-modal-skeleton {
   display: flex;
   flex-direction: column;
   gap: 14px;
   padding: 15px;
 }
 
-.aksrt-vip-modal-skeleton__user {
+.jio-vip-modal-skeleton__user {
   display: flex;
   align-items: center;
   gap: 10px;
 }
 
-.aksrt-vip-modal-skeleton__avatar {
+.jio-vip-modal-skeleton__avatar {
   width: 42px;
   height: 42px;
   border-radius: 50%;
   flex: none;
 }
 
-.aksrt-vip-modal-skeleton__lines {
+.jio-vip-modal-skeleton__lines {
   display: flex;
   flex-direction: column;
   gap: 6px;
@@ -157,51 +157,51 @@
   min-width: 0;
 }
 
-.aksrt-vip-modal-skeleton__tabs {
+.jio-vip-modal-skeleton__tabs {
   display: flex;
   gap: 10px;
 }
 
-.aksrt-vip-modal-skeleton__tab {
+.jio-vip-modal-skeleton__tab {
   flex: 1;
   height: 56px;
 }
 
-.aksrt-vip-modal-skeleton__pane {
+.jio-vip-modal-skeleton__pane {
   display: grid;
   gap: 12px;
 }
 
-.aksrt-vip-modal-skeleton__info {
+.jio-vip-modal-skeleton__info {
   display: flex;
   flex-direction: column;
   gap: 10px;
   padding-top: 4px;
 }
 
-.aksrt-vip-modal-skeleton__products {
+.jio-vip-modal-skeleton__products {
   display: flex;
   flex-direction: column;
   gap: 10px;
 }
 
-.aksrt-vip-modal-skeleton__button {
+.jio-vip-modal-skeleton__button {
   height: 38px;
 }
 
 /* 专属形状共用骨架底色与 shimmer（值与 modal-runtime.css 的线条/块一致）。 */
-.aksrt-vip-modal-skeleton__avatar,
-.aksrt-vip-modal-skeleton__tab,
-.aksrt-vip-modal-skeleton__button {
+.jio-vip-modal-skeleton__avatar,
+.jio-vip-modal-skeleton__tab,
+.jio-vip-modal-skeleton__button {
   display: block;
   border-radius: 8px;
   background: linear-gradient(90deg, rgba(148, 163, 184, 0.16), rgba(148, 163, 184, 0.3), rgba(148, 163, 184, 0.16));
   background-size: 200% 100%;
-  animation: aksrt-modal-skeleton 1.2s ease-in-out infinite;
+  animation: jio-modal-skeleton 1.2s ease-in-out infinite;
 }
 
 @media (min-width: 640px) {
-  .aksrt-vip-modal-skeleton__pane {
+  .jio-vip-modal-skeleton__pane {
     grid-template-columns: 1fr 1.2fr;
   }
 }