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-graphic-card.php

@@ -1,6 +1,6 @@
 <?php
 /**
- * Shared graphic / cover card (zibll zib_graphic_card parity).
+ * Shared graphic / cover card (legacy parity).
  *
  * Used by term cards, cover cards, term aggregation thumbs, etc.
  *
@@ -24,7 +24,7 @@ if (!function_exists('aksrt_graphic_card')) :
 	 *     @type string               $text2        Secondary text.
 	 *     @type string               $text3        Tertiary / badge text (HTML allowed for icon+count).
 	 *     @type string               $more         Extra absolute HTML (badge etc).
-	 *     @type bool                 $lazy         Use the Zibll lazySizes contract.
+	 *     @type bool                 $lazy         Use the legacy lazySizes contract.
 	 *     @type int|float            $height_scale Padding-bottom % (0 = default CSS).
 	 *     @type int|float            $mask_opacity 0–100 overlay opacity.
 	 *     @type string               $hide         pc|m|'' hide on device.
@@ -206,7 +206,7 @@ endif;
 
 if (!function_exists('aksrt_author_minicard')) :
 	/**
-	 * Author mini card for user lists (zibll zib_author_card).
+	 * Author mini card for user lists (legacy).
 	 *
 	 * @param int    $user_id
 	 * @param string $class
@@ -241,7 +241,7 @@ if (!function_exists('aksrt_author_minicard')) :
 			])
 			: '<a href="' . esc_url($home) . '">' . esc_html($user->display_name) . '</a>';
 
-		// Follow control (separate from name, zibll places both in dt).
+		// Follow control (separate from name, legacy places both in dt).
 		$follow = '';
 		$current = get_current_user_id();
 		if ($current !== $user_id) {