backend/minimal.js

const http = require('http');

// 1. MUST use port 7860
const PORT = 7860;

// 2. MUST use host '0.0.0.0' (Not localhost!)
const HOST = '0.0.0.0';

const server = http.createServer((req, res) => {
  console.log(`Request received: ${req.url}`); // Log every hit
  res.writeHead(200, { 'Content-Type': 'text/plain' });
  res.end('SUCCESS: The Backend is Reachable on Port 7860!');
});

server.listen(PORT, HOST, () => {
  console.log(`Minimal server running at http://${HOST}:${PORT}/`);
});