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)

src/Content/VipServicePackages.php

@@ -12,7 +12,7 @@ trait VipServicePackages {
 
 
     /**
-     * Parse per-level product lines (zibll vip_product).
+     * Parse per-level product lines (legacy vip_product).
      *
      * Preferred: price|show_price|time|unit|tag|title
      * Legacy:    price|days|title
@@ -121,7 +121,7 @@ trait VipServicePackages {
 
 
     /**
-     * Build upgrade package items (zibll vip_upgrade_product parity).
+     * Build upgrade package items (legacy vip_upgrade_product parity).
      *
      * upgrade.product multi-line formats:
      * - permanent VIP1: permanent|price|title[|show_price]