fix(layout): use controlled sidebar openKeys to preserve manual expand/collapse across navigation

apps/admin/src/layouts/MainLayout.tsx

@@ -1,4 +1,4 @@
-import React, { useCallback, useMemo, useState } from 'react';
+import React, { useCallback, useEffect, useMemo, useRef, useState } from 'react';
 import { Outlet, useNavigate, useLocation } from 'react-router-dom';
 import { Layout, Menu, Button, Avatar, Dropdown, Drawer, Grid } from 'antd';
 import {
@@ -123,6 +123,8 @@ const allMenuItems: MenuItemType[] = [
 const MainLayout: React.FC = () => {
   const [collapsed, setCollapsed] = useState(false);
   const [drawerOpen, setDrawerOpen] = useState(false);
+  const [openKeys, setOpenKeys] = useState<string[]>([]);
+  const prevPathname = useRef('');
   const navigate = useNavigate();
   const location = useLocation();
   const user = useMemo(() => JSON.parse(localStorage.getItem('user') || '{}'), []);
@@ -185,7 +187,20 @@ const MainLayout: React.FC = () => {
   };
 
   const selectedKeys = useMemo(() => findSelectedKeys(menuItems, location.pathname), [menuItems, location.pathname]);
-  const openKeys = useMemo(() => findOpenKeys(menuItems, location.pathname), [menuItems, location.pathname]);
+  // 路径变化时同步展开的菜单（不干扰用户手动展开/收起）
+  useEffect(() => {
+    if (location.pathname !== prevPathname.current) {
+      prevPathname.current = location.pathname;
+      setOpenKeys(findOpenKeys(menuItems, location.pathname));
+    }
+  }, [location.pathname, menuItems]);
+
+  const handleOpenChange = useCallback((keys: string[]) => {
+    // 只保留最新打开的一个子菜单
+    const latestKey = keys[keys.length - 1];
+    setOpenKeys(latestKey ? [latestKey] : []);
+  }, []);
+
 
 
   const transformToMenuItems = (items: MenuItemType[]): any[] => {
@@ -201,7 +216,8 @@ const MainLayout: React.FC = () => {
       theme="light"
       mode="inline"
       selectedKeys={selectedKeys}
-      defaultOpenKeys={openKeys}
+      openKeys={openKeys}
+      onOpenChange={handleOpenChange}
       items={transformToMenuItems(menuItems)}
       onClick={({ key }) => handleMenuClick(key)}
       style={{ border: 'none' }}