Agents write most of the code now, but checking it is still on us, so frameworks still pay off: less code means less to check and less to own. Rails is the One-Person Framework, until you add React and it becomes a JSON API behind a separate app.
Inertia Rails brings the Rails way back to React. We build a small museum app, look at the page object and the tiny protocol behind partial reloads, deferred props and infinite scroll, then cover realtime with Action Cable and upcoming live props, mobile apps with Inertia Native, and the rest of the ecosystem: Alba, Typelizer, SSR, starter kits and agent skills.
Try it:
rails new myapp -m https://inertia-rails.dev