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/css/tinymce.min.css

@@ -0,0 +1 @@
+body{font-size:16px;line-height:1.6;word-wrap:break-word;font-family:'Helvetica Neue',Helvetica,Arial,sans-serif;--muted-bg-color:#eee;--main-color:#4e5358;--main-bg-color:#fff;--main-border-color:rgba(50, 50, 50, 0.06);--muted-color:#999;background:0 0;color:var(--main-color)}body.dark-theme{--muted-color:#bbb;--muted-bg-color:#2d2e31;--main-bg-color:#323335;--main-color:#e5eef7;--main-border-color:rgba(114, 114, 114, 0.1)}img{margin:0 auto;display:block;max-width:100%;height:auto}h1{font-size:22px}h2{font-size:20px}h3{font-size:18px}h4{font-size:16px}h5{font-size:14px}ul{list-style:disc}ol{list-style:decimal}li{margin-bottom:10px}p{margin-bottom:16px}pre{word-wrap:break-word}table{border-top:solid 1px var(--main-border-color);border-left:solid 1px var(--main-border-color);width:100%;margin-bottom:25px}table th{background-color:transparent;text-align:center}table td,table th{border-bottom:solid 1px var(--main-border-color);border-right:solid 1px var(--main-border-color);padding:5px 10px}body>h1,body>h2,body>h3,body>h4{position:relative;padding-bottom:.2em}body>h1:not([class]):before,body>h2:not([class]):before,body>h3:not([class]):before,body>h4:not([class]):before{position:absolute;content:'';width:4px;background:#3098f8;top:10%;left:2px;bottom:10%;border-radius:5px;box-shadow:1px 1px 3px -1px #3098f8}body>h1:not([class]):before,body>h2:not([class]):before,body>h3:not([class]):before,body>h4:not([class]):before{width:40px;height:3px;top:auto;left:0;bottom:3px;transition:.4s}body>h3:not([class]):before,body>h4:not([class]):before{width:25px!important;height:2px!important}.alignnone{margin:0 auto}.alignleft{float:none;text-align:right;margin:0;margin-right:auto}.aligncenter{margin:0 auto;text-align:center;display:block}.alignright{float:none;text-align:right;margin:0;margin-left:auto}a{text-decoration:unset;color:#006ae3;outline:0!important}a:hover{color:#006ae3;text-decoration:underline!important}a[data-wplink-url-error]::before{outline:0!important}.comment pre,pre{margin:20px 0;font:12px/20px 'courier new';background:var(--main-border-color);padding:10px 20px;color:var(--muted-color);border:none;border-radius:4px;position:relative}blockquote{margin:20px auto;padding:20px 15px 15px;background-color:var(--main-border-color);font-size:16px;line-height:20px;color:var(--muted-color);border-left:4px solid var(--main-border-color)}blockquote p{margin:0;padding:0;margin-bottom:5px;font-size:16px;line-height:20px}.mce-content-body code,.mce-content-body code[data-mce-selected]{background:0 0;color:inherit;padding:0}.mce-content-body code:not([class]){color:#ff3c98;background-color:rgba(253,153,153,.2);margin:2px;border-radius:4px;font-size:.9em;padding:2px 4px}.enlighter-pre{max-height:300px;overflow-y:auto;-webkit-overflow-scrolling:touch;-ms-overflow-style:none;overflow:-moz-scrollbars-none;background:var(--main-border-color)}.enlighter-pre::-webkit-scrollbar{width:2px;height:2px}.enlighter-pre::-webkit-scrollbar-track{border-radius:10px}.enlighter-pre::-webkit-scrollbar-thumb{border-radius:10px;background:rgba(0,0,0,0)}.enlighter-pre:hover::-webkit-scrollbar-thumb{background:rgba(146,146,146,.3)}.enlighter-pre::-webkit-scrollbar-thumb:hover{background:rgba(145,145,145,.7)}.enlighter-pre::-webkit-scrollbar-thumb:window-inactive{background:rgba(146,146,146,.1)}code.gl{white-space:break-spaces;line-height:1.2;border:none}code.gl::before{content:'高亮代码';position:absolute;right:6px;top:8px;background:linear-gradient(135deg,#3dcabd 10%,#254bdd 100%);color:#fff;padding:3px 8px;border-radius:4px;font-size:12px}.quote_q{padding:1.2em;margin:10px 0 20px 0;position:relative;border-radius:6px;--quote-color:var(--main-color);color:var(--quote-color)}.quote_q>div,.quote_q>p{position:relative;margin:0;padding-left:2em;opacity:.6;position:relative}.quote_q>div>p{margin:0}.quote_q::before{content:'';border-radius:6px;position:absolute;bottom:0;left:0;opacity:.04;right:0;background:var(--quote-color);top:0}.quote_q.quote-mce::after{font: normal normal 900 14px/1 "Font Awesome 5 Free";content:'\f10d';font-size:1.2em;margin-right:.5em;position:absolute;color:var(--quote-color);top:20px;left:20px;opacity:.6}.quote_q [contenteditable=true]{outline:0!important}.quote_q .fa{opacity:.6}.qe_wzk_c-red{--quote-color:rgba(220, 63, 63, 1)}.qe_wzk_lan{--quote-color:rgba(3, 91, 138, 1)}.qe_wzk_lv{--quote-color:rgba(35, 121, 14, 1)}.quote_q .fa{margin-right:15px;opacity:.3;font-size:40px;float:left}.mce-preview-object.mce-object-iframe{display:block}.iframe-absbox{padding-bottom:56%;position:relative;overflow:hidden;background:var(--muted-bg-color)}.iframe-absbox .mce-preview-object.mce-object-iframe,.iframe-absbox iframe{position:absolute;left:0;top:0;height:100%;width:100%;border:0}.iframe-absbox .mce-preview-object.mce-object-iframe::before{content:attr(data-mce-p-src);content:'正在加载嵌入视频：' attr(data-mce-p-src);display:block;font-size:12px;position:absolute;left:0;bottom:0;width:100%;border:0;text-align:center;heightLine truncated