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)

assets/img/msg-promotion.svg

@@ -0,0 +1,5 @@
+<?xml version="1.0" standalone="no"?>
+<svg viewBox="0 0 1024 1024" version="1.1" xmlns="http://www.w3.org/2000/svg">
+    <path d="M512 512m-512 0a512 512 0 1 0 1024 0 512 512 0 1 0-1024 0Z" fill="#23C69A" p-id="13284"></path>
+    <path d="M733.8624 324.2624H290.1376C271.36 324.2624 256 339.9808 256 359.1808v314.176c0 19.2 15.36 34.9056 34.1376 34.9056h443.7248c18.7776 0 34.1376-15.7056 34.1376-34.9056V359.1808c0-19.2-15.36-34.9184-34.1376-34.9184zM512 609.2544l-52.5952 36.608a6.4 6.4 0 0 1-9.7792-7.104l18.5728-61.3248-51.072-38.7072a6.4 6.4 0 0 1 3.7376-11.4944l64.064-1.28 21.0304-60.544a6.4 6.4 0 0 1 12.0832 0l21.0304 60.544 64.064 1.28a6.4 6.4 0 0 1 3.7376 11.4944l-51.072 38.7072 18.56 61.3248a6.4 6.4 0 0 1-9.7664 7.1168L512 609.2672z m186.176-195.392h-372.352c-10.24 0-18.624-8.64-18.624-19.2s8.384-19.2 18.624-19.2h372.352c10.24 0 18.624 8.64 18.624 19.2s-8.384 19.2-18.624 19.2z" fill="#FFFFFF" p-id="13285"></path>
+</svg>