feat(providers): 集成 GlobalSidebarProvider

- 在 AuthProvider 内层添加 GlobalSidebarProvider
- 确保侧边栏可以访问用户认证状态

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

src/providers/AppProviders.js

@@ -14,6 +14,7 @@ import theme from '../theme/theme.js';
 // Contexts
 import { AuthProvider } from '../contexts/AuthContext';
 import { NotificationProvider } from '../contexts/NotificationContext';
+import { GlobalSidebarProvider } from '../contexts/GlobalSidebarContext';
 
 /**
  * AppProviders - 应用的 Provider 容器
@@ -57,7 +58,9 @@ export function AppProviders({ children }) {
             >
                 <NotificationProvider>
                     <AuthProvider>
+                        <GlobalSidebarProvider>
                             {children}
+                        </GlobalSidebarProvider>
                     </AuthProvider>
                 </NotificationProvider>
             </ChakraProvider>