🐛 fix(mobile): 修复会员中心点击后侧边栏未关闭的问题

- 点击会员中心按钮后自动关闭侧边栏，提升用户体验
- 在导航到会员页面的同时调用setSidebarOpen(false)关闭侧边栏

src/client/mobile/layouts/MainLayout.tsx

@@ -85,7 +85,10 @@ export const MainLayout = () => {
             {user && (
               <>
                 <button
-                  onClick={() => navigate('/mobile/member')}
+                  onClick={() => {
+                    navigate('/mobile/member');
+                    setSidebarOpen(false);
+                  }}
                   className="w-8 h-8 rounded-full bg-primary text-primary-foreground flex items-center justify-center mb-1"
                 >
                   <User className="w-4 h-4" />