- Phase 1: backup.conf.example + sam-db-backup.sh 백업 스크립트 - Phase 2: BackupCheckCommand + StatMonitorService.recordBackupFailure() - Phase 2: routes/console.php에 db:backup-check 05:00 스케줄 등록 - Phase 4: SlackNotificationService 생성 (웹훅 알림) - Phase 4: BackupCheckCommand/StatMonitorService에 Slack 알림 연동 Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>