1. Parallel Zone Downloads (3x faster)
- CZDS zones now download in parallel with semaphore
- Configurable max_concurrent (default: 3)
- Added timing logs for performance monitoring
2. Email Alerts for Ops
- New send_ops_alert() in email service
- Automatic alerts on zone sync failures
- Critical alerts on complete job crashes
- Severity levels: info, warning, error, critical
3. Admin Zone Sync Dashboard
- New "Zone Sync" tab in admin panel
- Real-time status for all TLDs
- Manual sync trigger buttons
- Shows drops today, total drops, last sync time
- Health status indicators (healthy/stale/never)
- API endpoint: GET /admin/zone-sync/status
Yves Gugger
f9e6025dc4