Remove AuditRepositoryFactory and AuditServicesFactory — two-layer
factory chain replaced by direct DI container wiring. Delete 4
single-consumer repository interfaces. Register all 4 repositories
and SystemAuditRedactionService directly in container. Update all
service constructors to type-hint concrete classes. Fix architecture
test and documentation references to deleted factories.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>