Shared Counter Smoke Test
Use this page to confirm the Fly.io relay is reachable from previews and production. Reload the page in multiple browsers or devices—the counter should tick upward everywhere in a couple of seconds. Keep this alongside the compatibility page for a full pre-flight checklist.
The counter writes to the Gun graph at demo → counter → PR. Each pull request receives an isolated node,
so the value increments independently per preview while still proving relay reads and writes.
Logs will appear here as the relay responds.