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-Backend/src/app.module.ts

@@ -5,7 +5,6 @@ import { ThrottlerModule } from '@nestjs/throttler';
 import { ClientIpThrottlerGuard } from './common/throttler/client-ip-throttler.guard';
 import { PrismaThrottlerStorage } from './common/throttler/prisma-throttler.storage';
 import { ThrottlerStorageModule } from './common/throttler/throttler-storage.module';
-import { ScheduleModule } from '@nestjs/schedule';
 import { PrismaModule } from './prisma/prisma.module';
 import { HealthModule } from './health/health.module';
 import { AuditModule } from './audit/audit.module';
@@ -53,16 +52,15 @@ import { SiteSettingsModule } from './site-settings/site-settings.module';
 import { BackupModule } from './backup/backup.module';
 import { ShopSyncModule } from './shop-sync/shop-sync.module';
 import { ApiKeysModule } from './api-keys/api-keys.module';
+import { SystemModule } from './system/system.module';
 import { JwtAuthGuard } from './auth/guards/jwt-auth.guard';
 import { PermissionsGuard } from './auth/guards/permissions.guard';
 import { PermissionsModule } from './auth/permissions/permissions.module';
 import { IdempotencyInterceptor } from './common/idempotency/idempotency.interceptor';
-import { IdempotencyCleanupService } from './common/idempotency/idempotency-cleanup.service';
 
 @Module({
   imports: [
     ConfigModule.forRoot({ isGlobal: true }),
-    ScheduleModule.forRoot(),
     ThrottlerModule.forRootAsync({
       imports: [ThrottlerStorageModule],
       inject: [PrismaThrottlerStorage],
@@ -119,6 +117,7 @@ import { IdempotencyCleanupService } from './common/idempotency/idempotency-clea
     BackupModule,
     ShopSyncModule,
     ApiKeysModule,
+    SystemModule,
   ],
   controllers: [],
   providers: [
@@ -128,7 +127,6 @@ import { IdempotencyCleanupService } from './common/idempotency/idempotency-clea
     { provide: APP_GUARD, useClass: JwtAuthGuard },
     { provide: APP_GUARD, useClass: PermissionsGuard },
     { provide: APP_INTERCEPTOR, useClass: IdempotencyInterceptor },
-    IdempotencyCleanupService,
   ],
 })
 export class AppModule {}