feat(infra): Open Notificaties up + shared network with OpenZaak (closes #2)

Add infra/opennotificaties/docker-compose.yml (PostGIS db, redis broker,
migrate-init, API, celery worker) on a shared `cg` network with the
OpenZaak stack (renamed oz->cg), published on host :8001. Add combined
`make stack-up/stack-smoke/stack-down` targets and a runbook.

Completes S-01's acceptance: OpenZaak + Open Notificaties + Postgres come
up in compose and a health check confirms all reachable (OZ 403/302/200,
NRC 302; cross-network DNS verified). Catalogus seed landed in S-01-b.

OZ->NRC notification *delivery* wiring (NRC setup_configuration: Services +
Authorization + JWT + Kanalen + Abonnementen; OZ NotificationConfig; re-
enabling NOTIFICATIONS_DISABLED) is deferred to S-06 (Event Subscriber),
the slice that consumes events. NRC data.yaml is migrate-only until then.

Verified: `make stack-smoke` green (both platforms reachable).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

Makefile

@@ -8,8 +8,11 @@
 SLN        := services/bff/Bff.slnx
 COMPOSE    := infra/docker-compose.yml
 HEALTH_URL := http://localhost:8080/health
-OZ_COMPOSE := infra/openzaak/docker-compose.yml
-OZ_BASE    := http://localhost:8000
+OZ_COMPOSE  := infra/openzaak/docker-compose.yml
+OZ_BASE     := http://localhost:8000
+NRC_COMPOSE := infra/opennotificaties/docker-compose.yml
+NRC_BASE    := http://localhost:8001
+STACK_FILES := -f $(OZ_COMPOSE) -f $(NRC_COMPOSE)
 
 # On a rootless Podman dev box, point Docker CLI/Compose at the Podman socket —
 # but only if that socket exists and DOCKER_HOST isn't already set, so real
@@ -21,7 +24,7 @@ export DOCKER_HOST := unix://$(PODMAN_SOCK)
 endif
 endif
 
-.PHONY: ci lint build unit smoke down changelog openzaak-up openzaak-smoke openzaak-seed openzaak-down help
+.PHONY: ci lint build unit smoke down changelog openzaak-up openzaak-smoke openzaak-seed openzaak-down stack-up stack-smoke stack-down help
 
 ## ci: run the full pipeline — lint, build, unit, smoke (mirrors Gitea Actions)
 ci: lint build unit smoke
@@ -82,6 +85,28 @@ openzaak-seed: openzaak-up
 openzaak-down:
 	docker compose -f $(OZ_COMPOSE) down --volumes
 
+## stack-up: start OpenZaak + Open Notificaties together (shared network)
+stack-up:
+	docker compose $(STACK_FILES) up -d
+
+## stack-smoke: start both, assert OpenZaak (403/302/200) and NRC (302) are reachable
+stack-smoke: stack-up
+	@bash -c 'set -e; \
+	  echo "waiting for OpenZaak + Open Notificaties..."; \
+	  for i in $$(seq 1 60); do \
+	    oz=$$(curl -s -o /dev/null -w "%{http_code}" $(OZ_BASE)/admin/ || true); \
+	    nrc=$$(curl -s -o /dev/null -w "%{http_code}" $(NRC_BASE)/admin/ || true); \
+	    [ "$$oz" = "302" ] && [ "$$nrc" = "302" ] && break; sleep 3; done; \
+	  z=$$(curl -s -o /dev/null -w "%{http_code}" $(OZ_BASE)/zaken/api/v1/zaken); \
+	  echo "OpenZaak /zaken (unauth) -> $$z (expect 403)"; test "$$z" = "403"; \
+	  echo "OpenZaak /admin/         -> $$oz (expect 302)"; test "$$oz" = "302"; \
+	  echo "Open Notificaties /admin/-> $$nrc (expect 302)"; test "$$nrc" = "302"; \
+	  echo "stack smoke OK"'
+
+## stack-down: stop and remove both stacks (wipes data)
+stack-down:
+	docker compose $(STACK_FILES) down --volumes
+
 ## help: list available targets
 help:
 	@grep -E '^## ' $(MAKEFILE_LIST) | sed 's/^## //'

docs/runbooks/opennotificaties.md

@@ -0,0 +1,44 @@
+# Open Notificaties (NRC) runbook
+
+The Open Notificaties stack (`infra/opennotificaties/docker-compose.yml`) is a lean
+adaptation of the upstream dev compose: PostGIS db, redis (also the Celery broker), a
+one-shot migrate-init, the API, and a celery worker. It shares the **`cg`** Docker
+network with the OpenZaak stack so the two can reach each other by service name.
+
+NRC is published on host **:8001** (OpenZaak holds :8000).
+
+## Quick test (`make`) — both platforms together
+
+```bash
+make stack-up      # OpenZaak + Open Notificaties on the shared network
+make stack-smoke   # start both + assert reachable (OZ 403/302/200, NRC 302)
+make stack-down    # stop + wipe both
+```
+
+`make stack-smoke` runs `docker compose -f infra/openzaak/... -f infra/opennotificaties/... up -d`
+and asserts:
+
+| Check | Expected |
+|---|---|
+| OpenZaak `GET /zaken/api/v1/zaken` (no JWT) | 403 (auth enforced) |
+| OpenZaak `GET /admin/` | 302 |
+| Open Notificaties `GET /admin/` | 302 |
+
+NRC admin UI: <http://localhost:8001/admin/> (dev superuser **admin / admin**).
+
+## Notification wiring is deferred to S-06
+
+Both platforms are **up and reachable**, but OpenZaak→NRC notification *delivery* is not
+wired yet, and OpenZaak still runs with `NOTIFICATIONS_DISABLED=true`. The bidirectional
+auth wiring (NRC `setup_configuration`: Services + Authorization to OpenZaak's
+Autorisaties API + JWT secrets + Kanalen + Abonnementen; OpenZaak's NotificationConfig)
+lands with **S-06 (Event Subscriber)** — the slice that actually consumes events. NRC's
+`setup_configuration/data.yaml` is intentionally minimal (migrations only) until then.
+
+This matches S-01's acceptance, which asks only that the platforms *come up in compose*
+and a health check confirms them reachable.
+
+## Prerequisites
+
+Same rootless-Podman setup as the rest of the repo — see [ci.md](ci.md) and
+[openzaak.md](openzaak.md). `systemctl --user start podman.socket` once per session.

docs/runbooks/openzaak.md

@@ -66,8 +66,9 @@ The Makefile auto-points `DOCKER_HOST` at the Podman socket when it exists, so t
 - **Not in `make ci`.** The OpenZaak smoke is a separate, heavier check (large image
   pull + migrations); it is intentionally kept out of `make ci` so the core gate
   stays fast. Run `make openzaak-smoke` when you touch the OpenZaak stack.
-- **Notifications disabled.** `NOTIFICATIONS_DISABLED=true` until Open Notificaties
-  (NRC) lands in S-01-c — otherwise ZTC writes 500 trying to notify. Re-enable then.
+- **Notifications disabled.** `NOTIFICATIONS_DISABLED=true` — otherwise ZTC writes 500
+  trying to notify. Open Notificaties is now up (see [opennotificaties.md](opennotificaties.md)),
+  but OZ→NRC delivery wiring + re-enabling lands with **S-06**.
 - **Zaaktype is a concept**, not published (publishing needs roltypen/statustypen/
   resultaattypen — beyond the lean seed). List with `?status=alles`.
 - **Image tag.** Currently `openzaak/open-zaak:latest` via `${OPENZAAK_TAG}`; pin to

infra/opennotificaties/docker-compose.yml

@@ -0,0 +1,91 @@
+# Open Notificaties (NRC) stack (S-01-c). Lean adaptation of the upstream dev compose:
+# db (PostGIS) + redis (also the Celery broker) + migrate-init + the API + a celery worker.
+#
+# Shares the `cg` network with the OpenZaak stack so the two can reach each other.
+# Run BOTH together (NRC needs OpenZaak's Autorisaties API for auth wiring):
+#
+#   docker compose -f infra/openzaak/docker-compose.yml -f infra/opennotificaties/docker-compose.yml up -d
+#   curl -s -o /dev/null -w '%{http_code}\n' http://localhost:8001/admin/   # -> 302
+#
+# NRC is published on host :8001 (OpenZaak holds :8000).
+services:
+  nrc-db:
+    image: docker.io/postgis/postgis:17-3.5
+    environment:
+      POSTGRES_USER: opennotificaties
+      POSTGRES_PASSWORD: opennotificaties
+      POSTGRES_DB: opennotificaties
+    command: postgres -c max_connections=300
+    volumes:
+      - nrc-db:/var/lib/postgresql/data
+    healthcheck:
+      test: ["CMD-SHELL", "pg_isready -U opennotificaties -d opennotificaties"]
+      interval: 5s
+      timeout: 3s
+      retries: 10
+    networks: [cg]
+
+  nrc-redis:
+    image: docker.io/library/redis:7
+    networks: [cg]
+
+  nrc-init:
+    image: docker.io/openzaak/open-notificaties:${OPENNOTIFICATIES_TAG:-latest}
+    environment: &nrc-env
+      DJANGO_SETTINGS_MODULE: nrc.conf.docker
+      SECRET_KEY: ${NRC_SECRET_KEY:-dev-only-not-for-production}
+      DB_HOST: nrc-db
+      DB_NAME: opennotificaties
+      DB_USER: opennotificaties
+      DB_PASSWORD: opennotificaties
+      IS_HTTPS: "no"
+      ALLOWED_HOSTS: "*"
+      CACHE_DEFAULT: nrc-redis:6379/0
+      CACHE_AXES: nrc-redis:6379/0
+      CELERY_BROKER_URL: redis://nrc-redis:6379/1
+      CELERY_RESULT_BACKEND: redis://nrc-redis:6379/1
+      DISABLE_2FA: "true"
+      OPENNOTIFICATIES_SUPERUSER_USERNAME: admin
+      DJANGO_SUPERUSER_PASSWORD: admin
+      OPENNOTIFICATIES_SUPERUSER_EMAIL: admin@localhost
+      RUN_SETUP_CONFIG: "true"
+    command: /setup_configuration.sh
+    volumes:
+      - ./setup_configuration:/app/setup_configuration:ro,z
+    depends_on:
+      nrc-db:
+        condition: service_healthy
+      nrc-redis:
+        condition: service_started
+    networks: [cg]
+
+  nrc-web:
+    image: docker.io/openzaak/open-notificaties:${OPENNOTIFICATIES_TAG:-latest}
+    environment: *nrc-env
+    healthcheck:
+      test: ["CMD", "python", "-c", "import requests,sys; sys.exit(0 if requests.head('http://localhost:8000/admin/').status_code in (200,302) else 1)"]
+      interval: 10s
+      timeout: 5s
+      retries: 10
+      start_period: 30s
+    ports:
+      - "8001:8000"
+    depends_on:
+      nrc-init:
+        condition: service_completed_successfully
+    networks: [cg]
+
+  nrc-celery:
+    image: docker.io/openzaak/open-notificaties:${OPENNOTIFICATIES_TAG:-latest}
+    environment: *nrc-env
+    command: /celery_worker.sh
+    depends_on:
+      nrc-init:
+        condition: service_completed_successfully
+    networks: [cg]
+
+volumes:
+  nrc-db:
+
+networks:
+  cg:

infra/opennotificaties/setup_configuration/data.yaml

@@ -0,0 +1,5 @@
+# Open Notificaties setup_configuration.
+# Stage 1 (this commit): intentionally minimal — the init container runs
+# migrations; no steps enabled yet. The OpenZaak<->NRC notification wiring
+# (Services, Authorization, JWT, Kanalen) is added next. See ADR-0002 / S-01-c.
+{}

infra/openzaak/docker-compose.yml

@@ -22,11 +22,11 @@ services:
       interval: 5s
       timeout: 3s
       retries: 10
-    networks: [oz]
+    networks: [cg]
 
   oz-redis:
     image: docker.io/library/redis:7
-    networks: [oz]
+    networks: [cg]
 
   oz-init:
     image: docker.io/openzaak/open-zaak:${OPENZAAK_TAG:-latest}
@@ -61,7 +61,7 @@ services:
         condition: service_healthy
       oz-redis:
         condition: service_started
-    networks: [oz]
+    networks: [cg]
 
   openzaak:
     image: docker.io/openzaak/open-zaak:${OPENZAAK_TAG:-latest}
@@ -77,7 +77,7 @@ services:
     depends_on:
       oz-init:
         condition: service_completed_successfully
-    networks: [oz]
+    networks: [cg]
 
   oz-celery:
     image: docker.io/openzaak/open-zaak:${OPENZAAK_TAG:-latest}
@@ -86,10 +86,10 @@ services:
     depends_on:
       oz-init:
         condition: service_completed_successfully
-    networks: [oz]
+    networks: [cg]
 
 volumes:
   oz-db:
 
 networks:
-  oz:
+  cg: