feat(auth): add username sign-in mode and recovery kits (#3215)

fluxer_api/src/api/user/services/UserDeletionService.ts

@@ -1,6 +1,7 @@
 // SPDX-License-Identifier: AGPL-3.0-or-later
 
 import {randomInt} from 'node:crypto';
+import {deleteRecoveryKit} from '@app/api/auth/AuthRecoveryKit';
 import {revokeAllAuthSessions} from '@app/api/auth/AuthSessionRevocation';
 import {createMessageID, createUserID, type MessageID, type UserID} from '@app/api/BrandedTypes';
 import {Config} from '@app/api/Config';
@@ -447,6 +448,7 @@ export async function processUserDeletion(
 		revokeAllAuthSessions({users: userRepository, gateway: gatewayService}, userId),
 		userRepository.deleteAllMfaBackupCodes(userId),
 		userRepository.deleteAllWebAuthnCredentials(userId),
+		deleteRecoveryKit(userId),
 		userRepository.deleteAllPushSubscriptions(userId),
 		userRepository.deleteAllRecentMentions(userId),
 		userRepository.deleteAllAuthorizedIps(userId),