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/Extensions/IPGeo.php

@@ -238,7 +238,7 @@ class IPGeo {
             return $this->empty_result('missing_key', ['provider' => 'qq', 'detail' => 'missing appkey']);
         }
 
-        // Path used for Tencent signature (zibll parity).
+        // Path used for Tencent signature (legacy parity).
         $path  = '/ws/location/v1/ip';
         $query = 'ip=' . rawurlencode($ip) . '&key=' . rawurlencode($appkey);
         $url   = 'https://apis.map.qq.com' . $path . '?' . $query;
@@ -300,7 +300,7 @@ class IPGeo {
             ]);
         }
 
-        // Amap sign: md5(sorted query without sig + secret) — zibll uses ip=&key= order.
+        // Amap sign: md5(sorted query without sig + secret) — legacy uses ip=&key= order.
         $base_query = 'ip=' . $ip . '&key=' . $appkey;
         $url        = 'https://restapi.amap.com/v3/ip?' . $base_query;
         if ($secretkey !== '') {
@@ -408,7 +408,7 @@ class IPGeo {
             }
         }
 
-        // Regex fallback (zibll).
+        // Regex fallback (legacy).
         preg_match('/"pro":"(.*?)"/u', $body, $pro);
         preg_match('/"city":"(.*?)"/u', $body, $city);
         preg_match('/"region":"(.*?)"/u', $body, $region);