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)

inc/helpers/aksrt-identity.php

@@ -27,7 +27,7 @@ if (!function_exists('aksrt_render_user_identity_chips')) {
 	/**
 	 * Render compact identity chips (verify / level / badges).
 	 *
-	 * Badge signals with icon_url render as Zibll-like medal images.
+	 * Badge signals with icon_url render as legacy-like medal images.
 	 *
 	 * @param int    $user_id
 	 * @param string $context author|comment|card
@@ -121,7 +121,7 @@ if (!function_exists('aksrt_render_user_identity_chips')) {
 
 if (!function_exists('aksrt_get_user_name')) {
 	/**
-	 * Zibll zib_get_user_name parity: name link + auth + wear medal + level + optional follow.
+	 * legacy parity: name link + auth + wear medal + level + optional follow.
 	 *
 	 * @param array|int $args User id or args array.
 	 */
@@ -188,7 +188,7 @@ if (!function_exists('aksrt_get_user_name')) {
 				if ($icon_url !== '') {
 					$level_html = '<img' . aksrt_get_lazy_attr('lazy_other', $icon_url, 'aksrt-user-level-icon img-icon ml3') . ' alt="' . esc_attr($label) . '" title="' . esc_attr($title) . '" decoding="async">';
 				} else {
-					// Text fallback mirrors zibll LV badge: small pill, never oversized.
+					// Text fallback mirrors legacy LV badge: small pill, never oversized.
 					$level_html = '<span class="badg badg-sm ml3 aksrt-user-level-badge" title="' . esc_attr($title) . '">' . esc_html($label) . '</span>';
 				}
 			} elseif ($type === 'badge' && !empty($args['medal']) && $medal_html === '' && !empty($signal['wear'])) {
@@ -230,7 +230,7 @@ if (!function_exists('aksrt_get_user_name')) {
 			}
 		}
 
-		// Order: name → auth → wear medal → level → follow (Zibll).
+		// Order: name → auth → wear medal → level → follow (legacy).
 		$html = '<name class="' . esc_attr((string) $args['class']) . '">' . $name_link . $vip_html . $auth_html . $medal_html . $level_html . $follow_html . '</name>';
 		/**
 		 * Filter rendered user name chrome.
@@ -245,7 +245,7 @@ if (!function_exists('aksrt_get_user_name')) {
 
 if (!function_exists('aksrt_render_user_medal_entry')) {
 	/**
-	 * Render the compact Zibll-style badge overview entry.
+	 * Render the compact legacy-style badge overview entry.
 	 *
 	 * The configured limit controls preview icons only; the count remains
 	 * the complete owned badge count returned by the privacy-aware DTO.
@@ -344,7 +344,7 @@ if (!function_exists('aksrt_user_has_visible_badges')) {
 
 if (!function_exists('aksrt_get_worn_medal_icon')) {
 	/**
-	 * Render the worn medal icon HTML for a user (standalone, zibll parity).
+	 * Render the worn medal icon HTML for a user (standalone, legacy parity).
 	 *
 	 * Returns an <img> tag when a badge is worn and has an icon_url in the
 	 * dictionary. Handles the edge case where the worn slug lives in user meta