- Add skip_metrics parameter to move_to_dlq to avoid double-counting when called from purge
- Fix purge_pending_queue to only increment count when not in dry-run mode
- Add nil check for config redis before accessing data_ttl
- Update health check tests to allow all gauge calls before checking specific metrics
- Reorder push_health_metrics to emit error/queue/task metrics before status
All 851 tests now pass including 40 queue reliability tests.
- Implement dead-letter queue (DLQ) to capture failed VM operations
- Implement auto-purge to clean up stale queue entries
- Implement health checks to monitor queue health
- Add comprehensive tests and documentation
Features:
- DLQ captures failures from pending, clone, and ready queues
- Auto-purge removes stale VMs with configurable thresholds
- Health checks expose metrics for monitoring and alerting
- All features opt-in via configuration (backward compatible)
