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/components/floating/FloatBtnCommonFields.vue

@@ -1,5 +1,5 @@
 <template>
-  <n-form label-placement="left" label-width="110" class="aksrt-form float-common-fields">
+  <n-form label-placement="left" label-width="110" class="jio-form float-common-fields">
     <n-form-item label="PC端显示" :show-feedback="false">
       <n-switch :value="!!modelValue.pc_s" @update:value="update('pc_s', $event)" />
     </n-form-item>
@@ -10,7 +10,7 @@
       <div class="float-common-fields__colors">
         <div class="float-common-fields__color">
           <span>自定义图标颜色</span>
-          <AksColorPicker
+          <JioColorPicker
             :model-value="modelValue.color?.color || ''"
             alpha
             clearable
@@ -19,7 +19,7 @@
         </div>
         <div class="float-common-fields__color">
           <span>自定义背景颜色</span>
-          <AksColorPicker
+          <JioColorPicker
             :model-value="modelValue.color?.bg || ''"
             alpha
             clearable
@@ -33,7 +33,7 @@
 </template>
 
 <script setup>
-import AksColorPicker from '@/components/form/AksColorPicker.vue'
+import JioColorPicker from '@/components/form/JioColorPicker.vue'
 
 const props = defineProps({
   modelValue: { type: Object, required: true },

assets/admin/src/components/floating/FloatBtnItemPanel.vue

@@ -1,10 +1,10 @@
 <template>
   <div class="float-btn-panel">
-    <div class="aksrt-sortable__head" v-bind="headAttrs">
-      <AksSortHandle @click.stop />
-      <div class="aksrt-sortable__main">
-        <div class="aksrt-sortable__title-row">
-          <span class="aksrt-sortable__title">{{ meta.title }}</span>
+    <div class="jio-sortable__head" v-bind="headAttrs">
+      <JioSortHandle @click.stop />
+      <div class="jio-sortable__main">
+        <div class="jio-sortable__title-row">
+          <span class="jio-sortable__title">{{ meta.title }}</span>
           <template v-if="modelValue.type !== 'more'">
             <n-tag v-if="modelValue.pc_s" size="small" type="info" :bordered="false">PC</n-tag>
             <n-tag v-if="modelValue.m_s" size="small" type="warning" :bordered="false">移动</n-tag>
@@ -12,18 +12,18 @@
           </template>
           <n-tag v-else size="small" :bordered="false">{{ modelValue.buttons.length }} 个</n-tag>
         </div>
-        <span v-if="meta.warn" class="aksrt-sortable__desc float-btn-panel__warn">
+        <span v-if="meta.warn" class="jio-sortable__desc float-btn-panel__warn">
           <i class="fa fas fa-info-circle" aria-hidden="true" /> {{ meta.warn }}
         </span>
       </div>
       <i
-        class="fa fas aksrt-sortable__toggle"
+        class="fa fas jio-sortable__toggle"
         :class="expanded ? 'fa-chevron-down' : 'fa-chevron-right'"
         aria-hidden="true"
       />
     </div>
 
-    <div v-show="expanded" class="aksrt-sortable__body">
+    <div v-show="expanded" class="jio-sortable__body">
       <div class="float-btn-panel__subtitle">{{ meta.panel }}</div>
 
       <FloatMoreButtonsEditor
@@ -35,7 +35,7 @@
       <template v-else>
         <FloatBtnCommonFields :model-value="modelValue" @update:model-value="emit('update:modelValue', $event)" />
 
-        <n-form label-placement="left" label-width="110" class="aksrt-form float-btn-panel__extra">
+        <n-form label-placement="left" label-width="110" class="jio-form float-btn-panel__extra">
           <n-form-item v-if="modelValue.type === 'qrcode'" label="一句话简介">
             <n-input :value="modelValue.desc" @update:value="patch({ desc: $event })" />
           </n-form-item>
@@ -49,7 +49,7 @@
           </n-form-item>
 
           <n-form-item v-if="modelValue.type === 'service_wechat'" label="微信二维码">
-            <AksMediaField
+            <JioMediaField
               :model-value="modelValue.wechat_img"
               placeholder="选择二维码图片"
               @update:model-value="patch({ wechat_img: $event })"
@@ -62,11 +62,11 @@
 </template>
 
 <script setup>
-/** 悬浮按钮排序列表中的单个卡片；外层 .aksrt-sortable__item 由 FloatingButtonsSettings 提供。 */
+/** 悬浮按钮排序列表中的单个卡片；外层 .jio-sortable__item 由 FloatingButtonsSettings 提供。 */
 import { computed, ref } from 'vue'
 import FaIconPicker from '@/components/form/FaIconPicker.vue'
-import AksMediaField from '@/components/form/AksMediaField.vue'
-import AksSortHandle from '@/components/form/AksSortHandle.vue'
+import JioMediaField from '@/components/form/JioMediaField.vue'
+import JioSortHandle from '@/components/form/JioSortHandle.vue'
 import { collapseHeadAttrs } from '@/components/form/useCollapsibleItems.js'
 import FloatBtnCommonFields from './FloatBtnCommonFields.vue'
 import FloatMoreButtonsEditor from './FloatMoreButtonsEditor.vue'
@@ -93,12 +93,12 @@ function patch(partial) {
 
 <style scoped>
 .float-btn-panel__warn {
-  color: var(--aksrt-color-warning, #D97706);
+  color: var(--jio-color-warning, #D97706);
 }
 
 .float-btn-panel__subtitle {
   margin-bottom: 12px;
-  color: var(--aksrt-color-text);
+  color: var(--jio-color-text);
   font-size: 13px;
   font-weight: 600;
 }

assets/admin/src/components/floating/FloatMoreButtonsEditor.vue

@@ -24,7 +24,7 @@
           </n-button>
         </template>
 
-        <n-form label-placement="left" label-width="110" class="aksrt-form">
+        <n-form label-placement="left" label-width="110" class="jio-form">
           <n-form-item label="按钮简介">
             <n-input :value="btn.desc" @update:value="patch(index, { desc: $event })" />
           </n-form-item>

assets/admin/src/components/floating/floating-defaults.js

@@ -16,7 +16,7 @@ export const FLOAT_BTN_META = {
   more: { title: '更多按钮', panel: '添加更多自定义按钮' },
 }
 
-const themeUri = (window.aksrtAdminData?.themeUri || '').replace(/\/$/, '')
+const themeUri = (window.jioAdminData?.themeUri || '').replace(/\/$/, '')
 
 /** 「更多按钮」出厂默认项（对齐参考主题 float_btn.more 默认值）。 */
 export function giftMoreButton() {