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>

src/WidgetSystem/PostQuery.php

@@ -1,6 +1,6 @@
 <?php
 
-namespace AKSRT\WidgetSystem;
+namespace Jio\WidgetSystem;
 
 defined('ABSPATH') || exit;
 
@@ -89,9 +89,9 @@ final class PostQuery {
 	private static function apply_order(array &$args, string $orderby, string $order): void {
 		$args['order'] = strtoupper($order) === 'ASC' ? 'ASC' : 'DESC';
 		$meta = [
-			'views' => class_exists('AKSRT\\Core\\DomainModel') ? \AKSRT\Core\DomainModel::POST_VIEW_COUNT_KEY : 'aksrt_post_views',
-			'like' => '_aksrt_like_count',
-			'favorite' => '_aksrt_favorite_count',
+			'views' => class_exists('Jio\\Core\\DomainModel') ? \Jio\Core\DomainModel::POST_VIEW_COUNT_KEY : 'jio_post_views',
+			'like' => '_jio_like_count',
+			'favorite' => '_jio_favorite_count',
 		];
 		if (isset($meta[$orderby])) {
 			$args['meta_key'] = $meta[$orderby];
@@ -112,13 +112,13 @@ final class PostQuery {
 		$map = ['1' => 'reading', '2' => 'download', '5' => 'gallery', '6' => 'video', 'reading' => 'reading', 'download' => 'download', 'gallery' => 'gallery', 'video' => 'video', 'vip' => 'vip'];
 		$values = array_values(array_unique(array_filter(array_map(static fn($value): string => $map[(string) $value] ?? '', $values))));
 		if (!$values) return;
-		$type_key = class_exists('AKSRT\\Core\\DomainModel') ? \AKSRT\Core\DomainModel::PAY_TYPE_KEY : '_aksrt_pay_type';
-		$meta_key = class_exists('AKSRT\\Core\\DomainModel') ? \AKSRT\Core\DomainModel::PAY_META_KEY : '_aksrt_pay';
+		$type_key = class_exists('Jio\\Core\\DomainModel') ? \Jio\Core\DomainModel::PAY_TYPE_KEY : '_jio_pay_type';
+		$meta_key = class_exists('Jio\\Core\\DomainModel') ? \Jio\Core\DomainModel::PAY_META_KEY : '_jio_pay';
 		$pay_query = [
 			'relation' => 'OR',
 			['key' => $type_key, 'value' => $values, 'compare' => 'IN'],
 		];
-		// Some AKSRT installations only have the structured pay array. LIKE
+		// Some Jio installations only have the structured pay array. LIKE
 		// accepts one scalar per clause, so emit a clause for each allowed type.
 		foreach ($values as $value) {
 			$pay_query[] = ['key' => $meta_key, 'value' => '"' . $value . '"', 'compare' => 'LIKE'];