优化dashboard配置功能

src/App.vue

@@ -53,11 +53,19 @@ async function loadDashboardConfig() {
     }
 }
 
+// 尝试加载用户监控面板配置（本地无配置时才加载）
+async function tryLoadDashboardConfig() {
+  if (localStorage.getItem("MP_DASHBOARD")) {
+    return
+  }
+  await loadDashboardConfig()
+}
+
 // 页面加载时，加载当前用户数据
 onBeforeMount(async () => {
   setTheme()
   startSSEMessager()
-  await loadDashboardConfig()
+  await tryLoadDashboardConfig()
 })
 </script>