feat: T6 wave 4 – notice PDFs, compliance notifications, readiness core

- Authority notice PDFs: pure model plus renderer, TSK count in A4
  landscape, FEHLT for missing particulars, stored totals with correction
  note; GET /authority-notices/:id/pdf with compliance:read.
- Compliance notifications in category COMPLIANCE: herd change and TSK
  reference day, at most one unread per topic and user (advisory lock);
  daily rule TskReferenceDayReached with Berlin day and catch-up; handlers
  in API and worker.
- Readiness core: live evaluation of seven pure rules, fingerprinted
  acknowledgements that reopen when revoked or stale, subject masking,
  read-only GET paths; READINESS_RULES injectable; kept out of the worker.
- e2e hygiene: no unscoped deletes, seeded settings rows saved/restored.
- ARCHITECTURE.md §12.8–12.10, §10 handler rows, Annahmen 78–85.

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

ApiCore-Backend/src/app.module.ts

@@ -62,6 +62,7 @@ import { SystemModule } from './system/system.module';
 import { WithdrawalModule } from './withdrawal/withdrawal.module';
 import { VeterinaryMedicinesModule } from './veterinary-medicines/veterinary-medicines.module';
 import { ComplianceModule } from './compliance/compliance.module';
+import { ReadinessModule } from './compliance/readiness/readiness.module';
 import { JwtAuthGuard } from './auth/guards/jwt-auth.guard';
 import { PermissionsGuard } from './auth/guards/permissions.guard';
 import { PermissionsModule } from './auth/permissions/permissions.module';
@@ -136,6 +137,7 @@ import { IdempotencyInterceptor } from './common/idempotency/idempotency.interce
     SystemModule,
     VeterinaryMedicinesModule,
     ComplianceModule,
+    ReadinessModule,
   ],
   controllers: [],
   providers: [