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/widget-system/user-badge-actions.test.cjs

@@ -9,7 +9,7 @@ const source = fs.readFileSync(path.join(__dirname, '../../assets/js/user-badge-
 function fixture(type = 'wear') {
   const modal = {};
   const classes = new Set();
-  const attributes = { 'data-aksrt-badge-action': type, 'data-slug': 'helper', 'data-user-id': '42' };
+  const attributes = { 'data-jio-badge-action': type, 'data-slug': 'helper', 'data-user-id': '42' };
   const button = {
     innerHTML: '佩戴此徽章',
     classList: {
@@ -30,13 +30,13 @@ function fixture(type = 'wear') {
   const closed = [];
   const document = { addEventListener: (type, callback) => { listener = callback; } };
   const window = {
-    aksrtData: { nonce: 'nonce', ajaxUrl: '/admin-ajax.php' },
+    jioData: { nonce: 'nonce', ajaxUrl: '/admin-ajax.php' },
     notyf: (...args) => notices.push(args),
     fetch: (url, options) => {
       requests.push({ url, options });
       return new Promise((done) => { resolve = done; });
     },
-    AksrtModalRuntime: { getActive: () => active, close: (reason) => closed.push(reason) },
+    JioModalRuntime: { getActive: () => active, close: (reason) => closed.push(reason) },
   };
   vm.runInNewContext(source, { window, document, URLSearchParams, Error });
   return {
@@ -56,7 +56,7 @@ test('wear submits once, shows progress, and closes only its dialog without relo
   ui.click();
   assert.equal(ui.requests.length, 1);
   const body = new URLSearchParams(ui.requests[0].options.body);
-  assert.equal(body.get('action'), 'aksrt_user_medal_wear');
+  assert.equal(body.get('action'), 'jio_user_medal_wear');
   assert.equal(body.get('nonce'), 'nonce');
   assert.equal(body.get('slug'), 'helper');
   assert.equal(body.has('id'), false);
@@ -76,7 +76,7 @@ test('grant and revoke submit the selected user; rejected actions keep the dialo
     ui.click();
     const body = new URLSearchParams(ui.requests[0].options.body);
     assert.equal(body.get('id'), '42');
-    assert.equal(body.get('action'), type === 'grant' ? 'aksrt_user_medal_manually_add' : 'aksrt_user_medal_manually_remove');
+    assert.equal(body.get('action'), type === 'grant' ? 'jio_user_medal_manually_add' : 'jio_user_medal_manually_remove');
     await ui.complete({ success: false, data: { message: '暂无此权限' } });
     assert.equal(ui.closed.length, 0);
     assert.equal(ui.button.getAttribute('aria-busy'), null);