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/js/runtime/enlighter/enlighterjs.bootstrap4.min.css

@@ -0,0 +1,3 @@
+/*! EnlighterJS Syntax Highlighter 3.0.0 | Mozilla Public License 2.0 | https://enlighterjs.org */
+.enlighter-tooltip{z-index:100}.enlighter-default{font-family:"Source Code Pro","Liberation Mono","Courier New",Courier,monospace;font-size:10px;line-height:16px;overflow:hidden;white-space:pre-wrap;word-wrap:break-word;margin:0 0 20px 0;padding:0;position:relative;text-align:left;direction:ltr}.enlighter-default .enlighter-special:hover{background-color:#f4f8fc}.enlighter-default .enlighter-raw{display:none;min-width:100%;line-height:inherit;font-size:12px;font-family:inherit;margin:0;padding:0;white-space:pre-wrap;word-wrap:break-word;border:none;box-shadow:none}.enlighter-default:hover .enlighter-toolbar{display:block}.enlighter-default .enlighter-btn{display:inline-block;margin:0 5px 0 5px;padding:3px 5px 3px 5px;border:solid 1px #333;background-color:#f0f0f0;cursor:pointer;font-family:inherit}.enlighter-default .enlighter-toolbar .enlighter-btn-raw{background-image:url(data:image/svg+xml,%3C%3Fxml%20version%3D%221.0%22%20encoding%3D%22utf-8%22%3F%3E%0D%0A%3C!DOCTYPE%20svg%20PUBLIC%20%22-%2F%2FW3C%2F%2FDTD%20SVG%201.1%2F%2FEN%22%20%22http%3A%2F%2Fwww.w3.org%2FGraphics%2FSVG%2F1.1%2FDTD%2Fsvg11.dtd%22%3E%0D%0A%3Csvg%20version%3D%221.1%22%20id%3D%22Ebene_2%22%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20xmlns%3Axlink%3D%22http%3A%2F%2Fwww.w3.org%2F1999%2Fxlink%22%20x%3D%220px%22%20y%3D%220px%22%0D%0A%09%20width%3D%2246px%22%20height%3D%2246px%22%20viewBox%3D%220%200%2046%2046%22%20enable-background%3D%22new%200%200%2046%2046%22%20xml%3Aspace%3D%22preserve%22%3E%0D%0A%3Cg%3E%0D%0A%09%3Cpath%20d%3D%22M19.436%2C36.875L6.568%2C25.002v-3.863L19.436%2C9.267v5.041l-9.583%2C8.668v0.188l9.583%2C8.669V36.875z%22%2F%3E%0D%0A%09%3Cpath%20d%3D%22M26.343%2C36.875v-5.041l9.583-8.669v-0.188l-9.583-8.668V9.267l12.868%2C11.872v3.863L26.343%2C36.875z%22%2F%3E%0D%0A%3C%2Fg%3E%0D%0A%3C%2Fsvg%3E%0D%0A)}.enlighter-default 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.enlighter-toolbar .enlighter-btn-website{background-image:url(data:image/svg+xml,%3C%3Fxml%20version%3D%221.0Line truncated
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