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/Scheduler/ScheduledJobRegistry.php

@@ -4,9 +4,7 @@ namespace MintyPHP\Service\Scheduler;
 
 use MintyPHP\App\AppContainer;
 use MintyPHP\App\Module\ModuleRegistry;
-use MintyPHP\Service\Audit\SystemAuditService;
 use MintyPHP\Service\Scheduler\Handler\ScheduledJobHandlerInterface;
-use MintyPHP\Service\Scheduler\Handler\SystemAuditPurgeJobHandler;
 use MintyPHP\Service\Scheduler\Handler\UserLifecycleJobHandler;
 use MintyPHP\Service\User\UserLifecycleService;
 use RuntimeException;
@@ -14,7 +12,6 @@ use RuntimeException;
 class ScheduledJobRegistry
 {
     public const USER_LIFECYCLE_RUN = 'user_lifecycle_run';
-    public const SYSTEM_AUDIT_PURGE = 'system_audit_purge';
 
     /** @var array<string, ScheduledJobHandlerInterface> */
     private array $handlers;
@@ -38,12 +35,10 @@ class ScheduledJobRegistry
 
     public function __construct(
         UserLifecycleService $userLifecycleService,
-        SystemAuditService $systemAuditService,
         private readonly AppContainer $container
     ) {
         $this->handlers = [
             self::USER_LIFECYCLE_RUN => new UserLifecycleJobHandler($userLifecycleService),
-            self::SYSTEM_AUDIT_PURGE => new SystemAuditPurgeJobHandler($systemAuditService),
         ];
 
         $this->loadModuleJobs();