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/comment-hard-cut-contract.test.cjs

@@ -98,7 +98,7 @@ test('quick reply is removed across the owned comment stack', () => {
     'assets/css/main.css',
     'assets/css/build/comments.css',
     'assets/js/comment-tools.js',
-    'inc/helpers/aksrt-comments.php',
+    'inc/helpers/jio-comments.php',
     'inc/helpers/comments/form-parts.php',
     'src/Admin/Schema/SchemaPostList.php',
     'src/Core/ScriptsPart1c.php',
@@ -157,28 +157,28 @@ test('comment markup keeps the 1:1 legacy DOM contract', () => {
   const item = read('inc/helpers/comments/item.php');
   // 点赞按钮（legacy: zib_get_comment_like — svg + text + count）。
   assert.ok(item.includes("<text></text><count>"), 'like button must render <text> before <count>');
-  assert.ok(item.includes('aksrt_get_comment_icon(\'like\''), 'like button must use the sprite icon');
-  assert.ok(item.includes('aksrt_get_comment_icon(\'topping\')'), 'topping badge must use the sprite icon');
-  assert.ok(item.includes('aksrt_get_comment_icon(\'approve\''), 'approve action must use the sprite icon');
-  assert.ok(item.includes('aksrt_get_comment_icon(\'menu_2\')'), 'action dropdown must use the sprite icon');
+  assert.ok(item.includes('jio_get_comment_icon(\'like\''), 'like button must use the sprite icon');
+  assert.ok(item.includes('jio_get_comment_icon(\'topping\')'), 'topping badge must use the sprite icon');
+  assert.ok(item.includes('jio_get_comment_icon(\'approve\''), 'approve action must use the sprite icon');
+  assert.ok(item.includes('jio_get_comment_icon(\'menu_2\')'), 'action dropdown must use the sprite icon');
   assert.ok(item.includes('data-toggle="tooltip"'), 'time/reply tooltip parity');
   assert.equal(item.includes('fa fa-thumbs-up'), false, 'legacy fa like icon must be gone');
 
-  const comments = read('inc/helpers/aksrt-comments.php');
+  const comments = read('inc/helpers/jio-comments.php');
   assert.ok(comments.includes('post_password_required() || !comments_open()'), 'closed comments must render nothing');
   assert.ok(comments.includes('user_url_enabled'), 'guest url field toggle must be wired');
   assert.ok(comments.includes("name=\"url\""), 'guest url input must render');
-  assert.ok(comments.includes("aksrt_get_comment_icon('signup', 'icon mr10')"), 'signarea signup must use the sprite icon');
-  assert.ok(comments.includes("aksrt_get_vip_icon($current_user->ID, 'em12 mr3')"), 'comt-title must render the direct VIP image with reference-theme spacing');
-  assert.ok(comments.includes("aksrt_get_avatar_html($current_user->ID, 96, ['class' => 'avatar'])"), 'logged-in avatar must use the canonical avatar helper at the reference source size');
-  assert.ok(comments.includes("aksrt_get_avatar_html(0, 96, ['class' => 'avatar'])"), 'guest avatar must use the canonical default-avatar helper');
-  assert.equal(comments.includes('aksrt_render_vip_badge'), false, 'legacy VIP wrapper helper must not remain in the comment form');
-  assert.equal(comments.includes('aksrt_render_user_identity_chips'), false, 'identity chips must not crowd the narrow comt-title');
+  assert.ok(comments.includes("jio_get_comment_icon('signup', 'icon mr10')"), 'signarea signup must use the sprite icon');
+  assert.ok(comments.includes("jio_get_vip_icon($current_user->ID, 'em12 mr3')"), 'comt-title must render the direct VIP image with reference-theme spacing');
+  assert.ok(comments.includes("jio_get_avatar_html($current_user->ID, 96, ['class' => 'avatar'])"), 'logged-in avatar must use the canonical avatar helper at the reference source size');
+  assert.ok(comments.includes("jio_get_avatar_html(0, 96, ['class' => 'avatar'])"), 'guest avatar must use the canonical default-avatar helper');
+  assert.equal(comments.includes('jio_render_vip_badge'), false, 'legacy VIP wrapper helper must not remain in the comment form');
+  assert.equal(comments.includes('jio_render_user_identity_chips'), false, 'identity chips must not crowd the narrow comt-title');
 
-  const vip = read('inc/helpers/aksrt-vip.php');
+  const vip = read('inc/helpers/jio-vip.php');
   assert.ok(vip.includes("trim('img-icon ' . $class)"), 'VIP helper must emit the reference img-icon contract');
-  assert.equal(vip.includes('function aksrt_render_vip_badge'), false, 'legacy wrapped VIP helper must be removed');
-  assert.equal(vip.includes('<span class="aksrt-vip-badge'), false, 'VIP helper must not add a badge wrapper');
+  assert.equal(vip.includes('function jio_render_vip_badge'), false, 'legacy wrapped VIP helper must be removed');
+  assert.equal(vip.includes('<span class="jio-vip-badge'), false, 'VIP helper must not add a badge wrapper');
 
   const formParts = read('inc/helpers/comments/form-parts.php');
   assert.ok(formParts.includes("case 'link':"), 'link dropdown case must exist');
@@ -186,7 +186,7 @@ test('comment markup keeps the 1:1 legacy DOM contract', () => {
   assert.equal(formParts.includes('fa-bolt'), false, 'quick button icon must be gone');
 
   const icons = read('inc/helpers/comments/icons.php');
-  assert.ok(icons.includes('function aksrt_get_comment_icon'), 'sprite icon helper must exist');
+  assert.ok(icons.includes('function jio_get_comment_icon'), 'sprite icon helper must exist');
   const bootstrap = read('inc/bootstrap.php');
   assert.ok(bootstrap.includes("comments/icons.php"), 'bootstrap must load the icon helper');