coldwire-rails

https://github.com/noreastergroup/coldwire-rails

When your Hotwire wires go cold. A Rails engine that serves a Cache API service worker, precaches the pages you nominate, and falls back to an offline view Turbo will actually render. Built against Hotwire Native's rules, which are stricter than a browser's, so the same cache works in a plain Hotwire web app and an installed PWA.