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/captcha-runtime-harness.test.cjs

@@ -16,8 +16,8 @@ function createInput(name, value = '') {
 
 function createHarness() {
   const fields = new Map();
-  const challenge = createInput('aksrt_captcha_challenge', 'challenge-token');
-  const proof = createInput('aksrt_captcha_proof', '');
+  const challenge = createInput('jio_captcha_challenge', 'challenge-token');
+  const proof = createInput('jio_captcha_proof', '');
   const verified = createInput('captcha_verified', '0');
   fields.set(challenge.name, challenge);
   fields.set(proof.name, proof);
@@ -56,7 +56,7 @@ function createHarness() {
   const document = {
     readyState: 'complete',
     documentElement: { nodeType: 1 },
-    querySelectorAll(selector) { return selector === '[data-aksrt-captcha-config]' ? [mount] : []; },
+    querySelectorAll(selector) { return selector === '[data-jio-captcha-config]' ? [mount] : []; },
     querySelector: () => null,
     getElementById(id) { return id === 'captcha-box' ? box : verified; },
     createElement(tag) {
@@ -88,7 +88,7 @@ function createHarness() {
     Promise,
   };
   vm.runInNewContext(runtime, { window, document, Promise, MutationObserver: undefined, setTimeout, clearTimeout, console });
-  return { api: window.AKSRTCaptcha, container };
+  return { api: window.JioCaptcha, container };
 }
 
 test('captcha run is single-flight until the owning business request resets', async () => {
@@ -98,7 +98,7 @@ test('captcha run is single-flight until the owning business request resets', as
   const first = api.run('login', container);
   const second = api.run('login', container);
   const firstPayload = await first;
-  assert.equal(firstPayload.aksrt_captcha_proof, 'proof-token');
+  assert.equal(firstPayload.jio_captcha_proof, 'proof-token');
 
   let secondSettled = false;
   second.then(() => { secondSettled = true; });
@@ -133,7 +133,7 @@ test('sign-in waits for main before binding and invokes the signin captcha', asy
   };
   const jqueryApi = { off() { return this; }, on() { return this; } };
   const jQuery = () => jqueryApi;
-  const window = { aksrtData: { captchaSignin: true } };
+  const window = { jioData: { captchaSignin: true } };
   let mainReady;
   let captchaCall = null;
   const tbquire = (deps, callback) => {
@@ -147,15 +147,15 @@ test('sign-in waits for main before binding and invokes the signin captcha', asy
   assert.equal(listeners.click, undefined);
   assert.equal(typeof mainReady, 'function');
 
-  window.AksrtRequest = {
+  window.JioRequest = {
     request(endpoint) {
       if (endpoint === '/signin/today') return Promise.resolve({ ok: true, status: 200, json: { enabled: true, signed: false, streak: 0, reward_if_signin: 1 } });
       if (endpoint === '/signin') return Promise.resolve({ ok: true, status: 200, json: { message: '签到成功', balance: 1 } });
       throw new Error('unexpected endpoint ' + endpoint);
     },
   };
-  window.AKSRTCaptcha = {
-    run(scene, scope) { captchaCall = { scene, scope }; return Promise.resolve({ aksrt_captcha_proof: 'proof' }); },
+  window.JioCaptcha = {
+    run(scene, scope) { captchaCall = { scene, scope }; return Promise.resolve({ jio_captcha_proof: 'proof' }); },
     reset() {},
   };