The WithdrawRegistration handler delivers the withdrawal message to the open Beoordelen task's
execution; the Workflow Client PUTs messageEventReceived (RegistratieIngetrokken). BeoordelingTask
now carries its executionId.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
## What & why
Second half of **S-12c** (behandel-portal backend), completing the decision path per **ADR-0013**:
- **Domain:** `BeoordeelRegistratie` now, after applying the decision (aggregate + ACL for approval), **completes the open Flowable `Beoordelen` task** for that registration (found by registrationId) with the besluit, so the workflow advances. No open task → the decision still stands (completes nothing); idempotent.
- **BFF:** `POST /behandel/registrations/{id}/decide` behind the medewerker/`behandelaar` policy, forwarding `goedkeuren`/`afwijzen` to the domain. Validates the besluit vocabulary (400 on unknown) without troubling the domain.
Behavior: decide is **401** without a token, **403** without the role, **400** for an unknown besluit, **204** (forwarded) for a behandelaar.
This completes the behandel backend. **S-12d** (the Angular behandel-portal + Playwright e2e) closes umbrella #13 and retires the temporary `/approve`.
## Definition of Done
- [x] Linked issue: #13 (umbrella, `refs`)
- [x] Tests first; red → green per layer
- [x] Unit + acceptance green (`make unit`): domain 79, bff 27, acceptance 9 (acl/event-subscriber unaffected)
- [x] Beoordeling acceptance scenario asserts task completion (goedkeuren + afwijzen)
- [x] openapi.json + api-client regenerated (drift guard passes)
- [x] Mutation ≥ break(90): **domain 100%, bff 100%**
- [ ] CI green (pending)
Part of #13.
Reviewed-on: #86
## What & why
First sub-slice of **S-12 (#13)** — the **beoordeling decision model** in the Domain Service. Foundation for the behandel-portal: it gives the domain a proper decision lifecycle before any UI/Flowable/BFF work.
- **Statuses:** add `InBehandeling` and `Afgewezen` to `RegistrationStatus`.
- **Aggregate:** `TakeIntoBehandeling()` (`Ingediend → InBehandeling`, idempotent, guards terminal states); generalise the behandelaar decision — `Approve()` (requires a zaak) and new `Reject()` both act on an `Ingediend`/`InBehandeling` registration → `Ingeschreven`/`Afgewezen`.
- **Use-case:** `BeoordeelRegistratie` (`goedkeuren` sets the zaak's final status via the ACL §8.1 → `Ingeschreven`; `afwijzen` → `Afgewezen`, domain-only for now). Idempotent.
- **Endpoint:** `POST /registrations/{id}/decide` (`{ "besluit": "goedkeuren" | "afwijzen" }`), superseding the temporary `/approve` (retired when the portal lands, S-12d).
- **BDD:** `EenRegistratieBeoordelen.feature` — goedkeuren + afwijzen scenarios (feature-scoped bindings).
**Scoped out** to later S-12 sub-slices: Flowable user-task claim/complete + BPMN `userTask` (S-12b), BFF `/behandel/*` + medewerker authz (S-12c), the Angular behandel-portal + e2e (S-12d), and propagating a *rejection* to the zaak/projection via the ACL.
## Definition of Done
- [x] Linked issue: #13 (umbrella; this PR `refs`, does not close)
- [x] Tests first; red → green per behaviour
- [x] Unit + acceptance green (`make unit`): domain 65, acceptance 9
- [x] Mutation ≥ break(90): domain 98.77%, no survivors in new code (the one unkilled mutant is the pre-existing `FlowableWorkflowClient` baseline)
- [ ] CI green (pending)
Part of #13.
Reviewed-on: #82
