Add Vite configuration

client/vite.config.js

@@ -0,0 +1,31 @@
+import { defineConfig } from 'vite'
+import react from '@vitejs/plugin-react'
+
+export default defineConfig({
+  plugins: [react()],
+  server: {
+    port: 5173,
+    proxy: {
+      '/api': {
+        target: 'http://localhost:3000',
+        changeOrigin: true
+      },
+      '/uploads': {
+        target: 'http://localhost:3000',
+        changeOrigin: true
+      }
+    }
+  },
+  build: {
+    outDir: 'dist',
+    sourcemap: false,
+    rollupOptions: {
+      output: {
+        manualChunks: {
+          vendor: ['react', 'react-dom', 'react-router-dom'],
+          tree: ['react-d3-tree', 'd3']
+        }
+      }
+    }
+  }
+})