style(web): 页面内容区不再重复渲染标题，标题统一由 TopNav 呈现

web/src/layouts/index.tsx

@@ -2,7 +2,7 @@ import { history, Outlet, useLocation } from '@umijs/max';
 import { PageContainer, ProLayout } from '@ant-design/pro-components';
 import { Dropdown } from 'antd';
 import { LogoutOutlined } from '@ant-design/icons';
-import { pageMetadata, menu } from '@/utils/metadata';
+import { menu } from '@/utils/metadata';
 
 // 菜单结构与 web.archived/src/app/Layout.jsx 完全一致（运营 / 资源 两组），页头标题规则对齐 pageMetadataRules。
 // /login 独立页：不走 ProLayout（对齐归档版布局分支）。
@@ -11,7 +11,6 @@ import { pageMetadata, menu } from '@/utils/metadata';
 export default function Layout() {
   const location = useLocation();
   if (location.pathname === '/login') return <Outlet />;
-  const metadata = pageMetadata(location.pathname);
 
   return (
     <ProLayout
@@ -60,7 +59,7 @@ export default function Layout() {
         ),
       }}
     >
-      <PageContainer title={metadata.title} subTitle={metadata.subtitle} ghost>
+      <PageContainer title={false} subTitle={false} ghost>
         <Outlet />
       </PageContainer>
     </ProLayout>