feat: enhance risk pool management and role validation

- Updated AGENTS.md to streamline information on risk pool operations and agent account restrictions.
- Introduced filtering options in AdminRiskPoolIndexController for active risk pools.
- Refactored AdminRiskPoolLockLogIndexController to support grouping by ticket or entry.
- Enhanced AdminRoleStoreController and AdminRoleUpdateController to prevent the use of reserved slugs for new roles.
- Improved error messaging for role creation and updates to clarify reserved role restrictions.
- Added new API routes for ticket item retrieval to improve admin functionalities.

app/Http/Controllers/Api/V1/Admin/User/AdminRoleIndexController.php

@@ -7,15 +7,12 @@ use App\Support\ApiResponse;
 use Illuminate\Http\JsonResponse;
 use App\Http\Controllers\Controller;
 use App\Support\AdminRoleApiPresenter;
-use App\Support\PlatformSystemRoles;
-
 final class AdminRoleIndexController extends Controller
 {
     public function __invoke(): JsonResponse
     {
         $roles = AdminRole::query()
             ->where('scope_type', AdminRole::SCOPE_SYSTEM)
-            ->whereIn('slug', PlatformSystemRoles::fixedSlugs())
             ->orderBy('sort_order')
             ->orderBy('id')
             ->get();