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>

tests/admin/baidu-push-settings-reference-contract.test.cjs

@@ -27,7 +27,7 @@ const displayGroups = fs.readFileSync(path.join(root, 'src/Settings/DisplayPageG
 const metaBox = fs.readFileSync(path.join(root, 'src/Extensions/SearchPushMetaBox.php'), 'utf8');
 const functions = fs.readFileSync(path.join(root, 'functions.php'), 'utf8');
 
-// 参考主题（zibll）百度推送字段全集，AKSRT 单一 canonical 配置面（扩展&增强 → 百度推送）。
+// 参考主题（zibll）百度推送字段全集，Jio 单一 canonical 配置面（扩展&增强 → 百度推送）。
 const REFERENCE_KEYS = [
   'baidu_push_enabled',
   'baidu_push_token',
@@ -136,7 +136,7 @@ test('前台自动推送 JS 与参考主题一致', () => {
 
 test('发布/更新触发沿用 transition_post_status 且仅限可检索内容类型', () => {
   assert.match(runtime, /transition_post_status/);
-  assert.match(runtime, /aksrt_searchable_post_types/);
+  assert.match(runtime, /jio_searchable_post_types/);
   assert.match(runtime, /wp_is_post_revision/);
   assert.match(runtime, /wp_is_post_autosave/);
 });
@@ -156,12 +156,12 @@ test('分类法推送接入 saved_term 且排除文章形式', () => {
   assert.match(runtime, /add_action\('saved_term'/);
   assert.match(runtime, /public static function pushable_taxonomies/);
   assert.match(runtime, /array_diff\(\(array\) \$taxonomies, \['post_format', 'nav_menu'\]\)/);
-  assert.match(runtime, /aksrt_baidu_push_taxonomies/);
+  assert.match(runtime, /jio_baidu_push_taxonomies/);
   assert.match(runtime, /get_term_link\(\$term_id, \$taxonomy\)/);
 });
 
 test('推送结果写入 meta 并按记录去重', () => {
-  assert.match(runtime, /META_KEY\s*=\s*'_aksrt_baidu_push_back'/);
+  assert.match(runtime, /META_KEY\s*=\s*'_jio_baidu_push_back'/);
   assert.match(runtime, /private function record_is_complete/);
   assert.match(runtime, /private function build_record/);
   assert.match(runtime, /'normal_push'/);
@@ -172,14 +172,14 @@ test('推送结果写入 meta 并按记录去重', () => {
 });
 
 test('「重新提交」勾选需通过 metabox nonce 校验', () => {
-  assert.match(runtime, /NONCE_ACTION\s*=\s*'aksrt_push_meta_save'/);
-  assert.match(runtime, /NONCE_FIELD\s*=\s*'aksrt_push_meta_nonce'/);
-  assert.match(runtime, /RESUBMIT_FIELD\s*=\s*'aksrt_push_resubmit'/);
+  assert.match(runtime, /NONCE_ACTION\s*=\s*'jio_push_meta_save'/);
+  assert.match(runtime, /NONCE_FIELD\s*=\s*'jio_push_meta_nonce'/);
+  assert.match(runtime, /RESUBMIT_FIELD\s*=\s*'jio_push_resubmit'/);
   assert.match(runtime, /wp_verify_nonce\(\$nonce, self::NONCE_ACTION\)/);
 });
 
 test('编辑页面板与参考主题「百度资源提交」Metabox 对齐', () => {
-  assert.match(metaBox, /add_meta_box\(\s*'aksrt_baidu_push',\s*__\('百度资源提交', 'aksrt'\)/);
+  assert.match(metaBox, /add_meta_box\(\s*'jio_baidu_push',\s*__\('百度资源提交', 'jio'\)/);
   assert.match(metaBox, /'side',\s*'high'/);
   assert.match(metaBox, /\{\$taxonomy\}_edit_form_fields/);
   assert.match(metaBox, /\{\$taxonomy\}_add_form_fields/);