feat: platform backbone and field capture, first part (checkpoint)

Platform backbone (plan 2026-10-13-plattform-rueckgrat), reviewed tasks:
- run roles api/worker/job/all with shared startup checks (Task 1)
- schema and migration for DomainEvent, deliveries, JobRun, ThrottlerHit (Task 2)
- audit, notifications and domain events written in the same transaction (Task 3)
- dispatcher with SKIP LOCKED claims, retries and stale release (Task 4)
- worker building blocks: tick, LISTEN/NOTIFY wake-up, health (Task 5)
- worker process and entry points (Task 6)
- throttler counters in Postgres (Task 19)
- separate keys per purpose with key ring (Task 20)
- public origin page without exact location (Task 22)
- shop keys split into read and write (Task 23)
- Kustomize base, components, overlay encry, CI validation (Task 26)

Field capture T3 (plan 2026-10-13-t3-erfassung-am-stand), reviewed tasks:
- brood frames, read endpoints, apiary overview and offline pack
- network basics, offline queue v3, navigation sheets, form building blocks
- new inspection with last-time hints and weather, varroa per day,
  treatment prefill, apiary page with round
- inspection photo (Task 10) is implemented, review pending

Not rolled out. Remaining tasks follow in later commits.

Co-Authored-By: Claude Opus 5.5 (1M context) <[email protected]>

deploy/k8s/components/pod-hardening/kustomization.yaml

@@ -0,0 +1,7 @@
+# Pod-Haertung fuer das Frontend nach Spec 2026-10-12 Abschnitte 5.3 und 7.
+# Die Backend-Rollen haerten components/backend-roles mit.
+# Rollout: Runbook Schritt 3.
+apiVersion: kustomize.config.k8s.io/v1alpha1
+kind: Component
+patches:
+  - path: patch-frontend.yaml

deploy/k8s/components/pod-hardening/patch-frontend.yaml

@@ -0,0 +1,31 @@
+# Root-Dateisystem nur lesbar. Schreiben darf Next.js nur in /tmp und in
+# seinen Cache (.next/cache), beides emptyDir.
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: apicore-frontend
+spec:
+  template:
+    spec:
+      automountServiceAccountToken: false
+      volumes:
+        - name: tmp
+          emptyDir: {}
+        - name: next-cache
+          emptyDir: {}
+      containers:
+        - name: apicore-frontend
+          securityContext:
+            readOnlyRootFilesystem: true
+          volumeMounts:
+            - name: tmp
+              mountPath: /tmp
+            - name: next-cache
+              mountPath: /app/.next/cache
+          resources:
+            requests:
+              cpu: 30m
+              memory: 128Mi
+            limits:
+              cpu: 300m
+              memory: 256Mi