concurrency-auditor C-2: every queue.add(...) site previously enqueued
without a stable jobId, so a double-dispatch (webhook retry, double-
click on Send, scheduler tick collision) would create two queue jobs
and the downstream worker would deliver twice. BullMQ rejects a
duplicate jobId while the original is still queued or active, so a
stable per-entity key gives at-most-once semantics naturally.
Added jobIds across all 10 enqueue sites:
- email send-invoice → `send-invoice:<invoiceId>`
- notifications invoice-overdue-notify → keyed per UTC day so dupes
collapse intra-day but tomorrow's run can re-notify if unpaid
- export gdpr-export → keyed on the exportId (unique per request)
- webhooks deliver (3 sites: dispatch, retry, test) → keyed on the
webhook_deliveries row UUID
- maintenance expense-dedup-scan → keyed on expenseId
- notifications send-notification-email → keyed on notification id
- email send-inquiry-confirmation → keyed on interestId (1 per
submission)
- email send-inquiry-sales-notification → keyed on interestId+email
(1 per recipient per submission)
- reports generate-report → keyed on the generated_reports row id
Pure refactor — no UX impact. Closes the BullMQ dedup gap that was
the second half of the concurrency-auditor's CRITICAL-tier findings.
Test fixture update: gdpr-export integration test now asserts the
jobId option on the queue.add call.
Tests 1315/1315.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Matt
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