refactor(audit): extract audit domain into self-contained module

Move the entire audit subsystem (system audit, API audit, import audit,
user lifecycle audit, frontend telemetry) from core into modules/audit/.

Core decoupling via interface-based injection:
- AuditRecorderInterface replaces SystemAuditService in 10+ core services
- UserLifecycleAuditInterface / ImportAuditInterface for specialized flows
- NullAuditRecorder fallback when audit module is disabled
- ApiBootstrap/ApiResponse use null-safe callable resolvers

Module structure (modules/audit/):
- Manifest with routes, permissions, scheduler jobs, authorization policy
- 9 services, 8 repositories, 6 domain enums, 4 job handlers
- 33 page files, 4 JS files, 8 test files, migration scripts, i18n

Core cleanup:
- OperationsAuthorizationPolicy, UiCapabilityMap, PermissionService
  surgically cleaned of audit-specific constants
- Sidebar template cleared of hardcoded audit navigation
- AuditModuleIsolationContractTest ensures no future core→module coupling

All quality gates pass: 1346 tests (19,276 assertions), PHPStan level 5
clean, architecture contracts verified.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

lib/App/Container/Registrars/RepositoryFactoryRegistrar.php

@@ -8,7 +8,6 @@ use MintyPHP\Repository\Search\SearchQueryRepository;
 use MintyPHP\Repository\Stats\AdminStatsRepository;
 use MintyPHP\Repository\Support\DatabaseSessionRepository;
 use MintyPHP\Service\Access\AccessRepositoryFactory;
-use MintyPHP\Service\Audit\AuditRepositoryFactory;
 use MintyPHP\Service\Auth\AuthRepositoryFactory;
 use MintyPHP\Service\Directory\DirectoryRepositoryFactory;
 use MintyPHP\Service\Import\ImportRepositoryFactory;
@@ -24,7 +23,6 @@ final class RepositoryFactoryRegistrar implements ContainerRegistrar
     public function register(AppContainer $container): void
     {
         $container->set(SettingRepositoryFactory::class, static fn (): SettingRepositoryFactory => new SettingRepositoryFactory());
-        $container->set(AuditRepositoryFactory::class, static fn (): AuditRepositoryFactory => new AuditRepositoryFactory());
         $container->set(SecurityRepositoryFactory::class, static fn (): SecurityRepositoryFactory => new SecurityRepositoryFactory());
         $container->set(MailRepositoryFactory::class, static fn (): MailRepositoryFactory => new MailRepositoryFactory());
         $container->set(ImportRepositoryFactory::class, static fn (): ImportRepositoryFactory => new ImportRepositoryFactory());