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]>

ApiCore-Backend/src/worker.ts

@@ -0,0 +1,28 @@
+import { INestApplicationContext } from '@nestjs/common';
+import { NestFactory } from '@nestjs/core';
+import { resolveRole } from './runtime/role';
+import { assertStartupEnvironment } from './runtime/startup-checks';
+import { WorkerModule } from './worker/worker.module';
+
+/**
+ * Entry point of the worker role: domain events, calendar outbox and their
+ * wake-ups, plus GET /health on WORKER_HEALTH_PORT - no HTTP API. Role and
+ * environment are checked before any module is created, so a misconfigured
+ * pod fails before it connects anywhere. `env` is for tests; the modules
+ * themselves read process.env.
+ */
+export async function bootstrapWorker(
+  env: NodeJS.ProcessEnv = process.env,
+): Promise<INestApplicationContext> {
+  const role = resolveRole('worker', env);
+  assertStartupEnvironment(role, env);
+
+  const app = await NestFactory.createApplicationContext(WorkerModule);
+  app.enableShutdownHooks();
+  return app;
+}
+
+// Started as `node dist/worker.js`; importing this file starts nothing.
+if (require.main === module) {
+  void bootstrapWorker();
+}