fix: Backup schedules and pruning

backend/src/features/backup/jobs/backup-scheduled.job.ts

@@ -5,7 +5,7 @@
  */
 
 import { Pool } from 'pg';
-import { v4 as uuidv4 } from 'uuid';
+import { randomUUID } from 'crypto';
 import { logger } from '../../../core/logging/logger';
 import { lockService } from '../../../core/config/redis';
 import { BackupRepository } from '../data/backup.repository';
@@ -59,7 +59,7 @@ export async function processScheduledBackups(): Promise<ScheduledBackupJobResul
     for (const schedule of dueSchedules) {
       // Generate unique lock value for this execution
       const lockKey = `backup:schedule:${schedule.id}`;
-      const lockValue = uuidv4();
+      const lockValue = randomUUID();
 
       // Try to acquire lock for this schedule
       const lockAcquired = await lockService.acquireLock(lockKey, BACKUP_LOCK_TTL_SECONDS, lockValue);