fase(10): frontend shadcn-ui shell with auth

frontend/vite.config.ts

@@ -1,9 +1,15 @@
 import { defineConfig } from 'vitest/config'
 import react from '@vitejs/plugin-react'
 import tailwindcss from '@tailwindcss/vite'
+import path from 'path'
 
 export default defineConfig({
   plugins: [react(), tailwindcss()],
+  resolve: {
+    alias: {
+      '@': path.resolve(__dirname, './src'),
+    },
+  },
   server: {
     proxy: {
       '/api': 'http://localhost:3001',