ECC/docker/context-profiles/complex-eval/reference3/idempotent-webhooks/CHANGELOG.md

Changelog

• 2026-09-25: Fixed INC-104 — the receiver now claims each event id and applies the payment synchronously in one event-loop turn, so concurrent duplicate deliveries can never both pass the seen-check. Added idempotency regression tests for concurrent duplicates, retries, and already-paid orders.