feat: platform backbone and field capture complete (checkpoint)

Platform backbone (plan 2026-10-13-plattform-rueckgrat), all tasks reviewed:
- webhooks with delivery table, retries and stable delivery id
- calendar handlers; a finished task removes its Outlook event
- tasks, automations, inspections, varroa, treatments, feedings,
  harvests, colonies, wintering, stock and bottling record domain events
  in the same transaction; legacy post-commit calls removed
- row locks through one helper (lockRowForUpdate, lockRowsForShare,
  lockRowsForUpdate)
- job framework with JobRun, cli exit codes, cleanup, task templates,
  daily evaluation, hourly app-backup and the rekey job
- system API and page "Verwaltung > System" with retry
- @nestjs/schedule removed, guard tests against in-process schedulers

Field capture T3 (plan 2026-10-13-t3-erfassung-am-stand), all tasks reviewed:
- inspection photo offline without metadata
- bulk capture for treatments, feedings and varroa (backend + frontend)
- offline stand mode with service worker, offline pages and packs
- offline session, cold start and logout on shared devices

Docs: ARCHITECTURE.md assumptions and sections updated, TASKS.md.
Gates: backend lint, typecheck, 1770 unit, 420 e2e, build, no schema
drift; frontend lint, typecheck, 913 tests, build. Not rolled out.

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

ApiCore-Frontend/src/lib/system/labels.ts

@@ -0,0 +1,77 @@
+import type { WebhookDeliveryStatus } from "@/lib/webhooks/types";
+import type { JobName, JobRunStatus } from "./types";
+
+/** Same wording as JOB_LABELS_DE in the backend. */
+export const JOB_LABELS: Record<JobName, string> = {
+  "daily-evaluation": "Tägliche Auswertung",
+  "task-templates": "Aufgaben aus Vorlagen",
+  cleanup: "Aufräumen",
+  "app-backup": "App-Backup",
+  rekey: "Schlüssel umstellen",
+};
+
+export const JOB_RUN_STATUS_LABELS: Record<JobRunStatus, string> = {
+  RUNNING: "Läuft",
+  SUCCEEDED: "Erfolgreich",
+  FAILED: "Fehlgeschlagen",
+} as const;
+
+export const WEBHOOK_DELIVERY_STATUS_LABELS: Record<WebhookDeliveryStatus, string> = {
+  PENDING: "Offen",
+  PROCESSING: "Wird zugestellt",
+  DELIVERED: "Zugestellt",
+  FAILED: "Fehlgeschlagen",
+};
+
+export const DOMAIN_EVENT_LABELS: Record<string, string> = {
+  InspectionRecorded: "Durchsicht erfasst",
+  InspectionCorrected: "Durchsicht korrigiert",
+  VarroaMeasured: "Varroamessung erfasst",
+  VarroaCorrected: "Varroamessung korrigiert",
+  TreatmentRecorded: "Behandlung erfasst",
+  TreatmentCorrected: "Behandlung korrigiert",
+  FeedingRecorded: "Fütterung erfasst",
+  FeedingCorrected: "Fütterung korrigiert",
+  HarvestRecorded: "Ernte erfasst",
+  HarvestCorrected: "Ernte korrigiert",
+  ColonyStatusChanged: "Volksstatus geändert",
+  ColonyEnded: "Volk beendet",
+  BatchBottled: "Charge abgefüllt",
+  BottlingCorrected: "Abfüllung korrigiert",
+  StockChanged: "Bestand geändert",
+  TaskCreated: "Aufgabe angelegt",
+  TaskUpdated: "Aufgabe geändert",
+  TaskCompleted: "Aufgabe erledigt",
+  WithdrawalEnded: "Wartezeit beendet",
+  TaskDue: "Aufgabe fällig",
+  QueenAged: "Königin gealtert",
+  VarroaMeasurementDue: "Varroamessung fällig",
+  InspectionOverdue: "Durchsicht überfällig",
+};
+
+/** The oldest open event is this old (seconds) before the worker counts as stuck. */
+export const QUEUE_STALE_WARNING_SECONDS = 600;
+
+const SECONDS_PER_MINUTE = 60;
+const SECONDS_PER_HOUR = 3600;
+const SECONDS_PER_DAY = 86400;
+
+/** "vor 3 Min." / "vor 2 Std." / "vor 2 Tagen". */
+export function formatAge(seconds: number): string {
+  if (seconds < SECONDS_PER_MINUTE) {
+    return "vor wenigen Sekunden";
+  }
+  if (seconds < SECONDS_PER_HOUR) {
+    return `vor ${Math.floor(seconds / SECONDS_PER_MINUTE)} Min.`;
+  }
+  if (seconds < SECONDS_PER_DAY) {
+    return `vor ${Math.floor(seconds / SECONDS_PER_HOUR)} Std.`;
+  }
+  const days = Math.floor(seconds / SECONDS_PER_DAY);
+  return days === 1 ? "vor 1 Tag" : `vor ${days} Tagen`;
+}
+
+/** "1 Versuch" / "8 Versuche". */
+export function attemptsLabel(attempts: number): string {
+  return attempts === 1 ? "1 Versuch" : `${attempts} Versuche`;
+}