Set `ssr: true` in Nuxt config and switch build command to `nuxt build`.
Update Dockerfile to run `.output/server/index.mjs` and remove static server.
Defer SEO initialization to prevent premature evaluation during SSR.
Remove direct document.head mutations to support SSR compatibility
Implement observer pattern to sync SEO state with Nuxt universal plugin
Update analytics script to use declarative injection in Nuxt config