const express = require("express"); const cors = require("cors"); const app = express(); app.use(cors()); app.get("/api/hello", (req, res) => { res.json({ message: "مرحبا من السيرفر 🚀" }); }); // مهم: 0.0.0.0 مش localhost app.listen(3000, "0.0.0.0", () => { console.log("Backend running on port 3000"); });