feat: rebuild marketing site with full component suite and preview

marketing-site/next.config.mjs

@@ -0,0 +1,13 @@
+/** @type {import('next').NextConfig} */
+const nextConfig = {
+  reactStrictMode: true,
+  // A stray package-lock.json sits at the repo root; pin the workspace root here
+  // so Turbopack doesn't infer the wrong one.
+  turbopack: {
+    root: import.meta.dirname,
+  },
+  // Don't auto-generate AGENTS.md / CLAUDE.md into the project.
+  agentRules: false,
+};
+
+export default nextConfig;