Fix: Stable Prisma 6 setup, database seeding, and routing improvements

frontend/vite.config.ts

@@ -4,4 +4,9 @@ import react from '@vitejs/plugin-react'
 // https://vite.dev/config/
 export default defineConfig({
   plugins: [react()],
+  server: {
+    proxy: {
+      '/api': 'http://localhost:3000'
+    }
+  }
 })