The bug that isn't a bug On Tuesday you attach a dead-letter queue to orders-queue . On Wednesday a batch of messages disappears and you ask Claude Code what happened. It answers immediately: orders-queue has no DLQ configured, so failed messages are dropped after the maximum receive count. That answer is wrong, and it is also not a hallucination. The assistant read a real snapshot of your AWS account. The snapshot was taken Monday. This is the failure mode that shows up once you gi...