backend/server.js

import express from 'express';
import cors from 'cors';
const app = express();
app.use(cors());
app.get('/', (_, res) => res.send('OK'));
app.get('/health', (_, res) => res.json({ ok: true }));
const PORT = process.env.PORT || 3000;
app.listen(PORT, () => console.log('Server listening on', PORT));