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The blog demo was a real Rails application running full stack in your browser. Action Cable over BroadcastChannel. Active Record over IndexedDB. The editor runs on WebContainers — Node.js and npm, entirely in browser memory. The same patterns, the same code structure, no server. What originally motivated this is now child's play to build. I want judges to be able to record scores during an event despite unreliable Wi-Fi. Downloading the agenda and that judge's scores entered to date and then running the existing ERB views over IndexedDB just works. Posting updates in real time when possible and batch when connectivity resumes is straightforward. Since each judge records their own scores, there are no merge conflicts. Mount the resulting offline SPA via Rack middleware, and everything works transparently.