fix: Logo API 改用正确的前台路由 /console/v1/theme/config

原路径 config.json 被 ThinkPHP 路由拦截返回 404
改用插件前台 API 路由，支持 res.data 嵌套解析

clientarea/hgcloud/footer.php

@@ -47,11 +47,12 @@
   var logoEl = document.getElementById('siteLogo');
   if (!logoEl) return;
   var xhr = new XMLHttpRequest();
-  xhr.open('GET', '/web/BlackFruit-web/plugins/addon/theme_configurator/config.json', true);
+  xhr.open('GET', '/console/v1/theme/config', true);
   xhr.onload = function() {
     if (xhr.status === 200) {
       try {
-        var cfg = JSON.parse(xhr.responseText);
+        var res = JSON.parse(xhr.responseText);
+        var cfg = res.data || res;
         var logoUrl = cfg.site_config && cfg.site_config.official_website_logo;
         if (logoUrl) logoEl.src = logoUrl;
       } catch(e) {}