frontend/next.config.js

/** @type {import('next').NextConfig} */
const nextConfig = {
  output: 'standalone',
  async rewrites() {
    // In production/Docker, proxy /api to backend on port 3001
    if (process.env.NODE_ENV === 'production') {
      return [
        {
          source: '/api/:path*',
          destination: 'http://localhost:3001/api/:path*',
        },
      ];
    }
    return [];
  },
};

module.exports = nextConfig;