Refactor code structure for improved readability and maintainability

frontend/vite.config.ts

@@ -1,22 +1,22 @@
 import { defineConfig } from 'vite';
 import react from '@vitejs/plugin-react';
+import path from 'path';
 
+// https://vite.dev/config/
 export default defineConfig({
   plugins: [react()],
+  resolve: {
+    alias: {
+      '@': path.resolve(__dirname, './src'),
+    },
+  },
   server: {
     port: 5173,
     proxy: {
       '/api': {
         target: 'http://localhost:3000',
         changeOrigin: true,
-        rewrite: (path) => path,
       },
     },
   },
-  test: {
-    environment: 'jsdom',
-    globals: true,
-    setupFiles: ['./src/setupTests.ts'],
-    include: ['tests/**/*.spec.tsx'],
-  },
 });