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/Support/Search/SearchSqlResourceProvider.php

@@ -113,7 +113,7 @@ class SearchSqlResourceProvider
             [
                 'key' => 'api-audit',
                 'label' => t('API audit'),
-                'permission' => PermissionService::API_AUDIT_VIEW,
+                'permission' => 'api_audit.view',
                 'countSql' => "select count(*) from api_audit_log where (request_id like ? escape '\\\\' or path like ? escape '\\\\' or error_code like ? escape '\\\\' or ip like ? escape '\\\\')",
                 'countParams' => [$like, $like, $like, $like],
                 'previewSql' => "select id, request_id, method, path, status_code, created_at from api_audit_log where (request_id like ? escape '\\\\' or path like ? escape '\\\\' or error_code like ? escape '\\\\' or ip like ? escape '\\\\') order by created_at desc limit ?",
@@ -124,7 +124,7 @@ class SearchSqlResourceProvider
             [
                 'key' => 'system-audit',
                 'label' => t('System audit'),
-                'permission' => PermissionService::SYSTEM_AUDIT_VIEW,
+                'permission' => 'system_audit.view',
                 'countSql' => "select count(*) from system_audit_log where (request_id like ? escape '\\\\' or event_type like ? escape '\\\\' or error_code like ? escape '\\\\' or path like ? escape '\\\\')",
                 'countParams' => [$like, $like, $like, $like],
                 'previewSql' => "select id, request_id, event_type, outcome, created_at from system_audit_log where (request_id like ? escape '\\\\' or event_type like ? escape '\\\\' or error_code like ? escape '\\\\' or path like ? escape '\\\\') order by created_at desc limit ?",