refactor(assets): vendor 资产迁入标准目录并全仓去除 zibll 标识

- assets/vendor 全量迁移: fontawesome5→assets/fontawesome5, css→assets/css,
  js→assets/js/runtime(避开 14 个同名自有文件), img 合并去重→assets/img,
  fonts→assets/fonts; 删除 assets/vendor
- libs 五个与 widgets/third-party 字节相同的库不重复入库, loader paths 改指向
- 运行时切换: _win.uri=assets 根, loader baseUrl=/js/runtime, enlighter 注入
  路径同步; PHP 7 个引用文件切换并改名 $zibll_*→$runtime_*
- 去品牌: Qinver 头注释/品牌 console.log/演示链接清除, 默认文案中性化
- 功能标识符改名: zib__→aksrt__, zib_ajax→aksrt_ajax, window.zib→
  window.aksrtLegacy, zibllblock/*→aksrtblock/*, .zib-widget→.aksrt-panel,
  .zib-slider→.aksrt-slider, zib_menu_options meta 键等
- 自有 CSS 改名: legacy-utilities/compat-vars/footer shell
- admin SPA 重建; 契约测试同步(路径/断言/文件更名)
- 例外保留: tests/visual 对照环境与 fixtures 前缀(外部 Zibll 产品引用)

验证: php -l 133 个改动文件通过; runtime 86 个 JS node --check 通过;
契约测试 68/70(2 个失败经 stash 对照确认为存量问题)

search.php

@@ -1,6 +1,6 @@
 <?php
 /**
- * Zibll-contract search results template.
+ * legacy-contract search results template.
  *
  * @package AKSRT
  */
@@ -63,7 +63,7 @@ if (is_active_sidebar('search_top_fluid')) {
 				'in_user' => $search_user,
 				's' => $search_query,
 			];
-			echo '<div class="zib-widget"' . ($paged < 2 ? ' win-ajax-replace="search"' : '') . '>';
+			echo '<div class="aksrt-panel"' . ($paged < 2 ? ' win-ajax-replace="search"' : '') . '>';
 			if (function_exists('aksrt_get_main_search')) aksrt_get_main_search($search_args, true);
 			echo '</div>';
 
@@ -87,12 +87,12 @@ if (is_active_sidebar('search_top_fluid')) {
 			<div class="ajaxpager search-page-ajaxpager">
 				<div class="ajax-item-header type-<?php echo esc_attr($search_type); ?>">
 					<div class="search-desc-text mb10 mt10 muted-2-color"><?php echo wp_kses_post($description); ?></div>
-					<div class="search-tab-header zib-widget relative padding-h10"><div><?php echo $tab_nav; // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped ?></div><div class="search-tab-filter"><?php echo function_exists('aksrt_get_search_tab_nav_filter') ? aksrt_get_search_tab_nav_filter($search_type) : ''; // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped ?></div></div>
+					<div class="search-tab-header aksrt-panel relative padding-h10"><div><?php echo $tab_nav; // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped ?></div><div class="search-tab-filter"><?php echo function_exists('aksrt_get_search_tab_nav_filter') ? aksrt_get_search_tab_nav_filter($search_type) : ''; // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped ?></div></div>
 				</div>
 				<?php if ($search_query === '') : ?>
-					<div class="zib-widget search-content"><div class="text-center muted-2-color padding-20"><?php esc_html_e('请输入搜索关键词', 'aksrt'); ?></div></div>
+					<div class="aksrt-panel search-content"><div class="text-center muted-2-color padding-20"><?php esc_html_e('请输入搜索关键词', 'aksrt'); ?></div></div>
 				<?php elseif ($user_query instanceof WP_User_Query && $user_query->get_results()) : ?>
-					<div class="zib-widget">
+					<div class="aksrt-panel">
 						<?php foreach ($user_query->get_results() as $result_user) :
 							$user_id = (int) $result_user->ID;
 							$user_url = function_exists('aksrt_get_user_home_url') ? aksrt_get_user_home_url($user_id) : get_author_posts_url($user_id);
@@ -118,7 +118,7 @@ if (is_active_sidebar('search_top_fluid')) {
 					</div>
 					<?php aksrt_render_pagination($wp_query, ['query_context' => 'search', 'render_config' => $config]); ?>
 				<?php else : ?>
-					<div class="zib-widget search-content"><div class="text-center muted-2-color padding-20"><?php esc_html_e('未找到相关内容', 'aksrt'); ?></div></div>
+					<div class="aksrt-panel search-content"><div class="text-center muted-2-color padding-20"><?php esc_html_e('未找到相关内容', 'aksrt'); ?></div></div>
 				<?php endif; ?>
 				<div class="post_ajax_loader search-loader" style="display:none"><div class="mb20"><div class="text-center muted-2-color mt20"><i class="loading mr10"></i><?php esc_html_e('加载中...', 'aksrt'); ?></div></div></div>
 			</div>