优化公众端登录状态无法保存的问题

frontend/src/router/index.ts

@@ -492,6 +492,16 @@ router.beforeEach(async (to, _from, next) => {
     return
   }
 
+  // 根路径：检查公众端登录状态，已登录则跳转活动大厅，未登录则跳转公众端登录页
+  if (to.path === "/") {
+    if (localStorage.getItem("public_token")) {
+      next({ path: "/p/activities", replace: true })
+    } else {
+      next({ path: "/p/login", replace: true })
+    }
+    return
+  }
+
   const authStore = useAuthStore()
   const tenantCodeFromUrl = extractTenantCodeFromPath(to.path)