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/withdrawal-history-runtime.test.cjs

@@ -48,7 +48,7 @@ class Element {
   }
 
   closest(selector) {
-    return selector === '[data-aksrt-withdraw-history-page]' && this.dataset.aksrtWithdrawHistoryPage
+    return selector === '[data-jio-withdraw-history-page]' && this.dataset.jioWithdrawHistoryPage
       ? this
       : null;
   }
@@ -76,13 +76,13 @@ test('withdrawal history requests paged ten-item results and renders the returne
   const pagination = new Element('nav');
   const closeButtons = [];
   const modal = new Element();
-  modal.querySelector = (selector) => selector === '[data-aksrt-withdraw-history-list]' ? list : pagination;
+  modal.querySelector = (selector) => selector === '[data-jio-withdraw-history-list]' ? list : pagination;
   modal.querySelectorAll = () => closeButtons;
   const openButton = new Element('button');
   const document = {
     body: { classList: { add() {}, remove() {} } },
-    querySelector: (selector) => selector === '[data-aksrt-withdraw-history-modal]' ? modal : null,
-    querySelectorAll: (selector) => selector === '[data-aksrt-withdraw-history-open]' ? [openButton] : [],
+    querySelector: (selector) => selector === '[data-jio-withdraw-history-modal]' ? modal : null,
+    querySelectorAll: (selector) => selector === '[data-jio-withdraw-history-open]' ? [openButton] : [],
     createElement: (tag) => new Element(tag),
     createTextNode: (text) => ({ textContent: String(text) }),
   };
@@ -102,7 +102,7 @@ test('withdrawal history requests paged ten-item results and renders the returne
   const source = fs.readFileSync(path.join(root, 'assets/js/credits-withdraw-history.js'), 'utf8');
 
   vm.runInNewContext(source, {
-    window: { aksrtData: { restUrl: 'https://example.test/wp-json/aksrt/v1', restNonce: 'nonce' } },
+    window: { jioData: { restUrl: 'https://example.test/wp-json/jio/v1', restNonce: 'nonce' } },
     document,
     jQuery,
     fetch,
@@ -121,13 +121,13 @@ test('withdrawal history requests paged ten-item results and renders the returne
   await new Promise((resolve) => setImmediate(resolve));
 
   assert.equal(requests.length, 1);
-  assert.equal(new URL(requests[0]).pathname, '/wp-json/aksrt/v1/earnings/withdrawals');
+  assert.equal(new URL(requests[0]).pathname, '/wp-json/jio/v1/earnings/withdrawals');
   assert.equal(new URL(requests[0]).searchParams.get('page'), '1');
   assert.equal(new URL(requests[0]).searchParams.get('per_page'), '10');
   assert.match(textContent(list.children[0]), /实际到账：9\.50元/);
   assert.doesNotMatch(textContent(list.children[0]), /private note/);
 
-  const pageTwo = pagination.children.find((button) => button.dataset.aksrtWithdrawHistoryPage === '2');
+  const pageTwo = pagination.children.find((button) => button.dataset.jioWithdrawHistoryPage === '2');
   assert.ok(pageTwo, 'the API max_pages value creates a second-page control');
   pagination.listeners.click({ target: pageTwo, preventDefault() {} });
   await new Promise((resolve) => setImmediate(resolve));