prevent deletion or suspension of system accounts

packages/backend/src/core/entities/UserEntityService.ts

@@ -53,6 +53,7 @@ import type { OnModuleInit } from '@nestjs/common';
 import type { NoteEntityService } from './NoteEntityService.js';
 import type { DriveFileEntityService } from './DriveFileEntityService.js';
 import type { PageEntityService } from './PageEntityService.js';
+import { isSystemAccount } from '@/misc/is-system-account.js';
 
 const Ajv = _Ajv.default;
 const ajv = new Ajv();
@@ -614,6 +615,7 @@ export class UserEntityService implements OnModuleInit {
 				backgroundId: user.backgroundId,
 				isModerator: isModerator,
 				isAdmin: isAdmin,
+				isSystem: isSystemAccount(user),
 				injectFeaturedNote: profile!.injectFeaturedNote,
 				receiveAnnouncementEmail: profile!.receiveAnnouncementEmail,
 				alwaysMarkNsfw: profile!.alwaysMarkNsfw,