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/referral-qr-contract.test.cjs

@@ -202,17 +202,17 @@ test('poster modal shell is hidden at rest so it cannot block the whole page', (
 
   // 标记、JS 查询与 CSS 钩子必须共用同一个属性，缺一即失效：
   // 少了标记上的属性，JS 拿不到弹窗、CSS 也隐藏不了它。
-  assert.match(modal, /data-aksrt-affiliate-poster-modal/)
-  assert.match(script, /querySelector\('\[data-aksrt-affiliate-poster-modal\]'\)/)
+  assert.match(modal, /data-jio-affiliate-poster-modal/)
+  assert.match(script, /querySelector\('\[data-jio-affiliate-poster-modal\]'\)/)
 
   // 服务端静态输出的 .modal.flex 必须显式隐藏。main.css 的 .flex{display:flex}
   // 后加载且与 bootstrap 的 .modal{display:none} 同特异性，不在此回位就会让
   // 静止态弹窗铺满全屏，叠加 .fade 的 opacity:0 形成隐形遮罩、拦截整页点击。
-  assert.match(css, /\.modal\[data-aksrt-affiliate-poster-modal\]\s*\{\s*display:\s*none;/)
-  assert.match(css, /\.modal\[data-aksrt-affiliate-poster-modal\]\.in\s*\{\s*display:\s*flex;/)
+  assert.match(css, /\.modal\[data-jio-affiliate-poster-modal\]\s*\{\s*display:\s*none;/)
+  assert.match(css, /\.modal\[data-jio-affiliate-poster-modal\]\.in\s*\{\s*display:\s*flex;/)
   // 圆形按钮必须回位成 pill。credits.css 的 .uc-content .but.jb-blue 是 (0,3,0)
   // 且后加载，会盖掉 main.css 的 .poster-share .but.cir，把蓝色下载钮压成方角。
-  assert.match(css, /\.modal\[data-aksrt-affiliate-poster-modal\] \.but\.cir\s*\{[^}]*border-radius:\s*5em/s)
+  assert.match(css, /\.modal\[data-jio-affiliate-poster-modal\] \.but\.cir\s*\{[^}]*border-radius:\s*5em/s)
   // 36×36 与投影仍由 main.css 的 .poster-share .but.cir 提供。
   const mainCss = read('assets', 'css', 'main.css')
   assert.match(mainCss, /\.poster-share \.but\.cir\s*\{[^}]*width:\s*36px/s)
@@ -227,26 +227,26 @@ test('invite-code input verifies live against the public REST endpoint', () => {
   assert.match(script, /function initInviteVerify\(root\)/)
   assert.match(script, /input\[data-invite-verify\]/)
   assert.match(script, /initInviteVerify\(root\)/)
-  assert.match(script, /\/wp-json\/aksrt\/v1\/invite-code\/verify\?code=/)
+  assert.match(script, /\/wp-json\/jio\/v1\/invite-code\/verify\?code=/)
 })
 
 test('affiliate posters declare the local QR dependency independently of withdrawal history', () => {
   const scripts = read('src', 'Core', 'ScriptsPart1b.php')
   assert.match(scripts, /assets\/js\/vendor\/qrcode\.min\.js/)
-  assert.match(scripts, /'aksrt-qrcode'/)
+  assert.match(scripts, /'jio-qrcode'/)
   // 海报模块显式依赖本地 QR；提现历史无需 QR。
   // credits.js 经收银台间接使用 QR，不能把这条支付依赖误认成海报依赖。
-  assert.match(scripts, /\['credits-affiliate' => \['loader_js', 'aksrt-qrcode'\]\]/)
-  assert.match(scripts, /'aksrt-credits'[\s\S]*?\['loader_js', 'aksrt-vip-coordinator', 'aksrt-pay-cashier'\]/)
-  assert.doesNotMatch(scripts, /'credits-withdraw-history' => \['loader_js', 'aksrt-qrcode'\]/)
+  assert.match(scripts, /\['credits-affiliate' => \['loader_js', 'jio-qrcode'\]\]/)
+  assert.match(scripts, /'jio-credits'[\s\S]*?\['loader_js', 'jio-vip-coordinator', 'jio-pay-cashier'\]/)
+  assert.doesNotMatch(scripts, /'credits-withdraw-history' => \['loader_js', 'jio-qrcode'\]/)
 })
 
 test('client IP honours the trusted-proxy filter before CDN headers', () => {
   const captcha = read('inc', 'modules', 'captcha.php')
-  assert.match(captcha, /apply_filters\('aksrt_trusted_proxies', \[\]\)/)
-  assert.match(captcha, /function aksrt_ip_in_list\(string \$ip, array \$list\): bool/)
+  assert.match(captcha, /apply_filters\('jio_trusted_proxies', \[\]\)/)
+  assert.match(captcha, /function jio_ip_in_list\(string \$ip, array \$list\): bool/)
   // CIDR 比较必须先检查同族地址长度，避免跨族误判。
   assert.match(captcha, /strlen\(\$ip_binary\) !== strlen\(\$subnet_binary\)/)
   // 过滤命中失败时直接回落 REMOTE_ADDR，不读转发头。
-  assert.match(captcha, /!aksrt_ip_in_list\(\$remote, \$trusted\)/)
+  assert.match(captcha, /!jio_ip_in_list\(\$remote, \$trusted\)/)
 })