Major refactor

ui/vite.config.ts

@@ -0,0 +1,22 @@
+import { defineConfig } from 'vite';
+import react from '@vitejs/plugin-react';
+
+// https://vitejs.dev/config/
+export default defineConfig({
+  plugins: [react()],
+  server: {
+    port: 5173,
+    proxy: {
+      // Proxy REST calls and WebSocket upgrades to the Axum backend
+      '/api': {
+        target: 'http://localhost:3000',
+        changeOrigin: true,
+        ws: true,
+      },
+    },
+    allowedHosts: ['localhost', '127.0.0.1', 'sirensong.app', 'inartificial-fishier-ngoc.ngrok-free.dev'],
+  },
+  build: {
+    outDir: 'dist',
+  },
+});