build and ready for demo

login screen

ui/app/vite.config.ts

@@ -3,6 +3,12 @@ import react from '@vitejs/plugin-react'
 
 export default defineConfig({
   plugins: [react()],
+  // Build into the repository root; the Dockerfile and `make ui` copy the result
+  // into the Go embed directory (cmd/server/web/dist).
+  build: {
+    outDir: '../dist',
+    emptyOutDir: true,
+  },
   server: {
     proxy: {
       '/api': {