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>

templates/parts/user-home/panel-follow.php

@@ -4,13 +4,13 @@
  *
  * Legacy parity: 粉丝/关注用户列表复刻 zib_get_follow_user_list + zib_author_card
  * （inc/functions/zib-author.php:395-454, 685-716）：子切换「粉丝 | 关注」居中文字链接，
- * 列表项走 aksrt_author_minicard（.author-minicard 三列 inline-block 卡片流）。
+ * 列表项走 jio_author_minicard（.author-minicard 三列 inline-block 卡片流）。
  *
  * Rendered inside the #panel-follow wrapper on the public user home and via
- * the aksrt/v1 user-home panel REST fragment. Sub-tabs and pagination are
+ * the jio/v1 user-home panel REST fragment. Sub-tabs and pagination are
  * button-driven ([data-uh-sub] / [data-uh-page]) and never touch the URL.
  *
- * @package AKSRT
+ * @package Jio
  */
 
 defined('ABSPATH') || exit;
@@ -23,16 +23,16 @@ $follow_sub  = in_array($follow_sub ?? 'followers', ['following', 'followers'],
 
 if (!empty($placeholder_only)) :
 	?>
-	<?php echo aksrt_get_user_home_follow_placeholder(); // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped -- 固定骨架由本主题 helper 输出。 ?>
+	<?php echo jio_get_user_home_follow_placeholder(); // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped -- 固定骨架由本主题 helper 输出。 ?>
 	<div class="uh-panel-load-error" role="alert">
-		<span><?php esc_html_e('加载失败，请重试', 'aksrt'); ?></span>
-		<button type="button" data-uh-retry><?php esc_html_e('重试', 'aksrt'); ?></button>
+		<span><?php esc_html_e('加载失败，请重试', 'jio'); ?></span>
+		<button type="button" data-uh-retry><?php esc_html_e('重试', 'jio'); ?></button>
 	</div>
 	<?php
 	return;
 endif;
 
-$follow_instance = class_exists('\AKSRT\User\Follow') ? \AKSRT\User\Follow::get_instance() : null;
+$follow_instance = class_exists('\Jio\User\Follow') ? \Jio\User\Follow::get_instance() : null;
 $following_count = $follow_instance ? (int) $follow_instance->get_following_count((int) $user_id) : 0;
 $follower_count  = $follow_instance ? (int) $follow_instance->get_follower_count((int) $user_id) : 0;
 $list = ['items' => [], 'total' => 0, 'total_pages' => 1];
@@ -47,13 +47,13 @@ $total_pages = max(1, (int) ($list['total_pages'] ?? 1));
 <ul class="uh-follow__subtabs list-inline splitters">
 	<li>
 		<button type="button" class="uh-follow__subtab<?php echo $follow_sub === 'followers' ? ' is-active focus-color' : ' muted-color'; ?>" data-uh-sub="followers">
-			<?php esc_html_e('粉丝', 'aksrt'); ?>
+			<?php esc_html_e('粉丝', 'jio'); ?>
 			<span class="uh-follow__subtab-count"><?php echo esc_html((string) $follower_count); ?></span>
 		</button>
 	</li>
 	<li>
 		<button type="button" class="uh-follow__subtab<?php echo $follow_sub === 'following' ? ' is-active focus-color' : ' muted-color'; ?>" data-uh-sub="following">
-			<?php esc_html_e('关注', 'aksrt'); ?>
+			<?php esc_html_e('关注', 'jio'); ?>
 			<span class="uh-follow__subtab-count"><?php echo esc_html((string) $following_count); ?></span>
 		</button>
 	</li>
@@ -62,16 +62,16 @@ $total_pages = max(1, (int) ($list['total_pages'] ?? 1));
 <?php if (!empty($items)) : ?>
 	<div class="uh-follow__list">
 		<?php foreach ($items as $row) :
-			echo aksrt_author_minicard((int) ($row['user_id'] ?? 0)); // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped
+			echo jio_author_minicard((int) ($row['user_id'] ?? 0)); // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped
 		endforeach; ?>
 	</div>
-	<?php aksrt_render_user_home_pagination($total_pages, $follow_page); ?>
+	<?php jio_render_user_home_pagination($total_pages, $follow_page); ?>
 <?php else : ?>
 	<?php
 	$empty_msg = $follow_sub === 'followers'
-		? __('暂无粉丝', 'aksrt')
-		: __('暂未关注任何人', 'aksrt');
-	aksrt_render_profile_empty($svg_empty_follow ?? $svg_empty_post ?? '', $empty_msg);
+		? __('暂无粉丝', 'jio')
+		: __('暂未关注任何人', 'jio');
+	jio_render_profile_empty($svg_empty_follow ?? $svg_empty_post ?? '', $empty_msg);
 	?>
 <?php endif; ?>
-<?php echo aksrt_get_user_home_follow_placeholder(); // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped -- 固定骨架由本主题 helper 输出。 ?>
+<?php echo jio_get_user_home_follow_placeholder(); // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped -- 固定骨架由本主题 helper 输出。 ?>