Invite ticket buyers to the in-person event via Attend - #65
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Buying the "Ticket to beest" shop item now fires a best-effort call to Attend's participants API so the buyer gets an onboarding invite email, following the same fire-and-forget pattern as the existing Slack/Loops purchase side effects. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
A dropped Attend invite means a paying participant doesn't get into the event, so it can't fail silently into a log line. AttendService now retries transient failures up to 3 times with backoff; if every attempt still fails, ShopService writes an audit-log entry against the buyer and (if ATTEND_ALERT_SLACK_ID is set) sends a direct Slack DM so someone follows up manually.
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Summary
1682f145-2f18-41f8-9267-7b3eb506b54a) now fires a best-effort call to Attend'sPOST /api/v1/events/beest/participantsso the buyer gets an onboarding invite email.AttendService(backend/src/attend/) follows the same config-driven, fail-silent pattern asSlackNotifyService/SiloService— degrades silently (with a startup warning log) if unconfigured, never throws, a 409 (already invited) counts as success.ShopService.purchase()'s existing post-commit side-effect block (same place the Slack DM and Loops date-sync already fire), gated on a newATTEND_TICKET_SHOP_ITEM_IDenv var so it only fires for the actual ticket item.New env vars (need to be set for this to activate)
ATTEND_BASE_URL(e.g.https://attend.hackclub.com)ATTEND_API_KEY(event-scoped API key, from attend admin → event → regenerate api key)ATTEND_EVENT_ID(beest)ATTEND_TICKET_SHOP_ITEM_ID(1682f145-2f18-41f8-9267-7b3eb506b54a)Test plan
attend.service.spec.ts— unit tests for the new service (config-missing no-op, success, 409-as-success, network failure swallowed)