next.config.mjs

/** @type {import('next').NextConfig} */
const nextConfig = {
  experimental: {
    serverActions: {
      bodySizeLimit: '25mb',
    },
  },
  // Cabeçalhos de segurança aplicados a todas as respostas.
  async headers() {
    return [
      {
        source: '/:path*',
        headers: [
          { key: 'X-Content-Type-Options', value: 'nosniff' },
          { key: 'X-Frame-Options', value: 'DENY' },
          { key: 'Referrer-Policy', value: 'strict-origin-when-cross-origin' },
          {
            key: 'Permissions-Policy',
            value: 'camera=(), microphone=(), geolocation=(), payment=()',
          },
          { key: 'X-DNS-Prefetch-Control', value: 'off' },
          {
            key: 'Strict-Transport-Security',
            value: 'max-age=63072000; includeSubDomains; preload',
          },
          // Impede que a app seja embebida noutros sítios (anti-clickjacking).
          { key: 'Content-Security-Policy', value: "frame-ancestors 'none'" },
        ],
      },
    ];
  },
};

export default nextConfig;