- Connect with a licence key (/setup last screen, Site settings -> Licence) - hub-heartbeat job every 15 min: version, health, totals (income as a band) - Licence tokens verified with the Hub's public key; states active / grace (banner for site admins only) / suspended / revoked (read-only) / unlicensed; Hub keys kept out of the generic settings endpoints - /health; "update available" for admins; scripts/install.sh - docs/hub-protocol.md shared with the events-hub repo - Unit tests (hub.test.js); docs The production Hub public key (backend/src/hub/publicKey.js) must be set before this is released. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_012mt6TCv85T9VKRq3cV7rXq