Add factory reset functionality and update identity service

- Introduced a new DELETE endpoint `/api/admin/maintenance/factory-reset` for a complete reset of the admin panel, removing all users except the current admin and clearing various data.
- Implemented the `FactoryReset` method in `AdminMaintenanceEndpoints` to handle the reset logic.
- Added a new method `ListAllUserIdsExceptAsync` in `IIdentityService` to retrieve user IDs excluding a specified user, aiding in the factory reset process.
- Updated the frontend to include a confirmation dialog for the factory reset action, enhancing user experience and safety.
- Enhanced localization support for the new factory reset feature in both Russian and English, ensuring clarity for all users.

frontend/src/routes/admin/maintenance.tsx

@@ -7,6 +7,7 @@ import { Button } from '@/shared/ui/button'
 import { Card, CardContent, CardHeader, CardTitle } from '@/shared/ui/card'
 import { Input } from '@/shared/ui/input'
 import { deleteClosedTickets, deleteDisabledApps, deleteOldAuditLogs } from '@/features/admin/maintenance/api'
+import { FactoryResetDialog } from '@/features/admin/maintenance/FactoryResetDialog'
 
 export const Route = createFileRoute('/admin/maintenance')({ component: AdminMaintenancePage })
 
@@ -118,6 +119,25 @@ function AdminMaintenancePage() {
           </div>
         </CardContent>
       </Card>
+
+      <details className="group rounded-md border border-red-900/50">
+        <summary className="cursor-pointer select-none px-4 py-3 text-sm font-medium text-red-400">
+          {t('admin.maintenance.factoryReset.dangerZone')}
+        </summary>
+        <div className="border-t border-red-900/50 px-4 py-4">
+          <Card className="border-red-900/50">
+            <CardHeader>
+              <CardTitle className="text-base text-red-400">{t('admin.maintenance.factoryReset.title')}</CardTitle>
+            </CardHeader>
+            <CardContent className="flex flex-col gap-3">
+              <p className="text-sm text-muted-foreground">{t('admin.maintenance.factoryReset.description')}</p>
+              <div>
+                <FactoryResetDialog />
+              </div>
+            </CardContent>
+          </Card>
+        </div>
+      </details>
     </div>
   )
 }