Doppler change history: Background job delays impacting sync and email delivery

Doppler reported a critical background-job degradation from 2025-08-20 18:52 UTC to 2025-08-20 19:58 UTC, lasting 1 h 6 min. Integration syncs showed failed with "Out of sync", while email, activity log, and webhook delivery were delayed. A fix was implemented and all unprocessed jobs were processed by 19:38 UTC; the incident was resolved at 19:58 UTC.