fix: Backup schedules and pruning

backend/src/core/scheduler/README.md

@@ -22,13 +22,13 @@ The scheduler runs periodic background jobs. In blue-green deployments, **multip
 ### Pattern for New Jobs
 
 ```typescript
-import { v4 as uuidv4 } from 'uuid';
+import { randomUUID } from 'crypto';
 import { lockService } from '../../core/config/redis';
 import { logger } from '../../core/logging/logger';
 
 export async function processMyJob(): Promise<void> {
   const lockKey = 'job:my-job-name';
-  const lockValue = uuidv4();
+  const lockValue = randomUUID();
   const lockTtlSeconds = 300; // 5 minutes - adjust based on expected job duration
 
   // Try to acquire lock