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/Service/Auth/AuthService.php

@@ -9,7 +9,7 @@ use MintyPHP\Repository\User\UserReadRepositoryInterface;
 use MintyPHP\Repository\User\UserWriteRepositoryInterface;
 use MintyPHP\Router;
 use MintyPHP\Service\Access\PermissionService;
-use MintyPHP\Service\Audit\SystemAuditService;
+use MintyPHP\Service\Audit\AuditRecorderInterface;
 use MintyPHP\Service\User\UserAccountService;
 use MintyPHP\Service\User\UserTenantContextService;
 use MintyPHP\Session;
@@ -42,7 +42,7 @@ class AuthService
         private readonly PermissionService $permissionService,
         private readonly TenantSsoService $tenantSsoService,
         private readonly AuthSessionTenantContextService $authSessionTenantContextService,
-        private readonly SystemAuditService $systemAuditService,
+        private readonly AuditRecorderInterface $systemAuditService,
         private readonly SessionStoreInterface $sessionStore,
         private readonly ?ModuleEventDispatcher $eventDispatcher = null
     ) {