fix: app_v3.js同步app.js的SENSU_BASE前缀改动

static/web_panel/js/app_v3.js

@@ -44,7 +44,13 @@ window.toggleTheme = function(){
 // ═══ 路由系统 ═══
 // Hash format: #/dashboard  |  #/files  |  #/plugins/example_plugin
 // Built-in pages map to ./static/pages/{name}.html
-// Plugin pages load from /plugin/{name}
+// Plugin pages load from {base}/plugin/{name}
+
+// 从当前页面路径提取面板前缀 (e.g. /SenSu/home.html → /SenSu)
+window.SENSU_BASE = (function(){
+  var p = window.location.pathname;
+  return p.substring(0, p.lastIndexOf('/')) || '';
+})();
 
 var BUILTIN_PAGES = ['dashboard','logs','console','plugins','projects','proxy','files','settings'];
 var _pluginPagesCache = null; // {plugin_name: {path, title, icon}}
@@ -167,7 +173,7 @@ async function loadPluginPage(pluginName) {
   if(!_pluginPagesCache) await fetchPluginPages();
 
   try {
-    var resp = await fetch('/plugin/'+pluginName+'?t='+Date.now(), {credentials:'include'});
+    var resp = await fetch(window.SENSU_BASE+'/plugin/'+pluginName+'?t='+Date.now(), {credentials:'include'});
     if(!resp.ok) throw new Error(resp.status);
     var html = await resp.text();