feat: add new interfaces, services, and utilities for API integration

refactor: reorganize type definitions and improve type safety

build: add lodash and @types/lodash as dependencies

chore: update tsconfig and vite config for path aliases

style: improve code organization and add documentation comments

fix: correct type usage in LanguageSwitcher component

perf: implement snackbar provider for global notifications

test: add new test interfaces and utility functions

ci: update pnpm-lock.yaml with new dependencies

src/App.tsx

@@ -2,17 +2,30 @@ import { BrowserRouter } from 'react-router-dom';
 import { CssBaseline, ThemeProvider } from '@mui/material';
 import { theme } from './theme';
 import AppRoutes from './routes';
+import SnackbarProvider from './components/Provider/SnackbarProvider';
+
 import './locales';
 
-function App() {
+/**
+ * 封装MaterialUIApp，将主题、基础样式和路由包裹起来
+ */
+function MaterialUIApp() {
   return (
     <ThemeProvider theme={theme}>
       <CssBaseline />
-      <BrowserRouter>
-        <AppRoutes />
-      </BrowserRouter>
+      <SnackbarProvider>
+        <BrowserRouter>
+          <AppRoutes />
+        </BrowserRouter>
+      </SnackbarProvider>
     </ThemeProvider>
   );
 }
 
+function App() {
+  return (
+    <MaterialUIApp />
+  );
+}
+
 export default App;