Initial commit.

web/vite.config.ts

@@ -0,0 +1,16 @@
+import { defineConfig } from 'vite'
+import react from '@vitejs/plugin-react'
+
+// The Go server owns /api (including the WebSocket); Vite proxies to it in
+// dev so the frontend can be served with hot reload on :5173.
+export default defineConfig({
+  plugins: [react()],
+  server: {
+    proxy: {
+      '/api': {
+        target: 'http://localhost:8080',
+        ws: true,
+      },
+    },
+  },
+})