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>

inc/helpers/user-center-renderers/profile-posts.php

@@ -2,24 +2,24 @@
 /**
  * User center profile posts part (orchestrator).
  *
- * @package AKSRT
+ * @package Jio
  */
 
 defined('ABSPATH') || exit;
 
 $context = is_array($args['context'] ?? null) ? $args['context'] : [];
 extract($context, EXTR_SKIP); // phpcs:ignore WordPress.PHP.DontExtract.extract_extract
-$can_submit_posts = class_exists('\\AKSRT\\Core\\FrontSubmit')
-	&& \AKSRT\Core\FrontSubmit::get_instance()->can_submit((int) $user_id);
+$can_submit_posts = class_exists('\\Jio\\Core\\FrontSubmit')
+	&& \Jio\Core\FrontSubmit::get_instance()->can_submit((int) $user_id);
 ?>
 <div class="widget-card">
 	<div class="profile-list-header creator-center-header">
 		<div class="creator-center-heading">
-			<h2 class="widget-title widget-title--inline"><?php esc_html_e('创作中心', 'aksrt'); ?></h2>
+			<h2 class="widget-title widget-title--inline"><?php esc_html_e('创作中心', 'jio'); ?></h2>
 			<p class="creator-center-heading__summary">
 				<?php
 				/* translators: %d: total post count */
-				printf(esc_html__('管理你的文章、草稿和审核状态（共 %d 篇）', 'aksrt'), $post_count);
+				printf(esc_html__('管理你的文章、草稿和审核状态（共 %d 篇）', 'jio'), $post_count);
 				?>
 			</p>
 		</div>
@@ -27,7 +27,7 @@ $can_submit_posts = class_exists('\\AKSRT\\Core\\FrontSubmit')
 			<?php if (!empty($new_post_url) && $can_submit_posts) : ?>
 				<a class="btn-primary btn-sm" href="<?php echo esc_url($new_post_url); ?>">
 					<span aria-hidden="true">＋</span>
-					<?php esc_html_e('新建文章', 'aksrt'); ?>
+					<?php esc_html_e('新建文章', 'jio'); ?>
 				</a>
 			<?php endif; ?>
 			<?php require __DIR__ . '/posts-status-filter.php'; ?>