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>

tests/Service/Access/PermissionServiceTest.php

@@ -7,7 +7,7 @@ use MintyPHP\Repository\Access\PermissionRepositoryInterface;
 use MintyPHP\Repository\Access\RolePermissionRepositoryInterface;
 use MintyPHP\Repository\Access\UserRoleRepositoryInterface;
 use MintyPHP\Service\Access\PermissionService;
-use MintyPHP\Service\Audit\SystemAuditService;
+use MintyPHP\Service\Audit\AuditRecorderInterface;
 use PHPUnit\Framework\MockObject\MockObject;
 use PHPUnit\Framework\TestCase;
 
@@ -16,7 +16,7 @@ class PermissionServiceTest extends TestCase
     private PermissionRepositoryInterface&MockObject $permissionRepository;
     private RolePermissionRepositoryInterface&MockObject $rolePermissionRepository;
     private UserRoleRepositoryInterface&MockObject $userRoleRepository;
-    private SystemAuditService&MockObject $systemAuditService;
+    private AuditRecorderInterface&MockObject $systemAuditService;
     private SessionStoreInterface&MockObject $sessionStore;
     private PermissionService $service;
 
@@ -25,7 +25,7 @@ class PermissionServiceTest extends TestCase
         $this->permissionRepository = $this->createMock(PermissionRepositoryInterface::class);
         $this->rolePermissionRepository = $this->createMock(RolePermissionRepositoryInterface::class);
         $this->userRoleRepository = $this->createMock(UserRoleRepositoryInterface::class);
-        $this->systemAuditService = $this->createMock(SystemAuditService::class);
+        $this->systemAuditService = $this->createMock(AuditRecorderInterface::class);
         $this->sessionStore = $this->createMock(SessionStoreInterface::class);
 
         $this->service = new PermissionService(