Add Tailwind v4 and shadcn/ui baseline components

frontend/vite.config.ts

@@ -1,19 +1,32 @@
 import path from 'node:path'
 import { defineConfig } from 'vite'
 import react from '@vitejs/plugin-react'
+import tailwindcss from '@tailwindcss/vite'
 import { TanStackRouterVite } from '@tanstack/router-plugin/vite'
 
 export default defineConfig({
   plugins: [
-    TanStackRouterVite({ target: 'react', autoCodeSplitting: true }),
+    TanStackRouterVite({
+      target: 'react',
+      autoCodeSplitting: true,
+      routesDirectory: './src/routes',
+      generatedRouteTree: './node_modules/.cache/tanstack-router/routeTree.gen.ts',
+    }),
     react(),
+    tailwindcss(),
   ],
   resolve: {
     alias: {
       '@': path.resolve(__dirname, './src'),
+      '@generated': path.resolve(__dirname, './node_modules/.cache'),
     },
   },
   server: {
     port: 3000,
   },
+  build: {
+    outDir: 'node_modules/.cache/dist',
+    emptyOutDir: true,
+  },
+  cacheDir: 'node_modules/.cache/vite',
 })