chore: scaffold web, worker, and compose stack

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

web/next.config.ts

@@ -0,0 +1,7 @@
+import type { NextConfig } from "next";
+
+const nextConfig: NextConfig = {
+  output: "standalone",
+};
+
+export default nextConfig;