import type { NextConfig } from "next";

const nextConfig: NextConfig = {
  // Emits a self-contained .next/standalone server (only the deps actually
  // used at runtime, no full node_modules) - what the Dockerfile copies in.
  output: "standalone",
  // Baseline security headers (clickjacking, MIME-sniffing, referrer leakage,
  // browser feature access). No Content-Security-Policy yet: this app has no
  // inventory of its script/style/connect sources, and shipping a guessed
  // CSP risks silently breaking Next.js hydration or the Supabase client —
  // TODO revisit once the actual source list is audited.
  async headers() {
    return [
      {
        source: "/:path*",
        headers: [
          { key: "X-Frame-Options", value: "SAMEORIGIN" },
          { key: "X-Content-Type-Options", value: "nosniff" },
          { key: "Referrer-Policy", value: "strict-origin-when-cross-origin" },
          { key: "Permissions-Policy", value: "camera=(), microphone=(), geolocation=()" },
          { key: "Strict-Transport-Security", value: "max-age=63072000; includeSubDomains" },
        ],
      },
    ];
  },
};

export default nextConfig;