Implement NotificationProjector: a zaken/zaak/create notification records the delivery
in the notification log (atomic record-or-skip for idempotency, §8.6) and upserts an
INGEDIEND projection row keyed by zaak id; other channels/actions are ignored. Rebuild
clears the projection and replays the log — no OpenZaak access needed (§8.1). bsn/naam
are deferred (ADR-0008).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Failing unit + acceptance tests for the Event Subscriber's NotificationProjector:
a zaken/zaak/create notification yields one INGEDIEND projection row, duplicate
deliveries collapse to one row, non-zaak/non-create notifications are ignored, and
a rebuild repopulates the projection from the durable notification log (PRD §8.4).
The projector is a no-op stub so the tests compile and fail on the assertions; the
implementation follows in the green commit. The notification log doubles as the
idempotency guard and rebuild source so a rebuild needs no OpenZaak access (§8.1).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
