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/common/with-timeout.spec.ts

@@ -0,0 +1,37 @@
+import { withTimeout } from './with-timeout';
+
+describe('withTimeout', () => {
+  afterEach(() => {
+    jest.useRealTimers();
+  });
+
+  it('resolves with the value when the promise settles in time', async () => {
+    await expect(withTimeout(Promise.resolve(42), 1000, 'late')).resolves.toBe(
+      42,
+    );
+  });
+
+  it('rejects with the original error when the promise rejects in time', async () => {
+    await expect(
+      withTimeout(Promise.reject(new Error('boom')), 1000, 'late'),
+    ).rejects.toThrow('boom');
+  });
+
+  it('rejects with the given message when the promise takes too long', async () => {
+    jest.useFakeTimers();
+    const pending = withTimeout(
+      new Promise<never>(() => undefined),
+      500,
+      'too slow',
+    );
+    const assertion = expect(pending).rejects.toThrow('too slow');
+    await jest.advanceTimersByTimeAsync(500);
+    await assertion;
+  });
+
+  it('clears its timer once the promise settled', async () => {
+    jest.useFakeTimers();
+    await withTimeout(Promise.resolve(1), 500, 'late');
+    expect(jest.getTimerCount()).toBe(0);
+  });
+});