nomad-temporal-jobs Go API

OpenTelemetry tracing, Prometheus metrics, structured logging, and Nomad client factory.

Nomad, Consul, and PostgreSQL snapshot activities with S3 upload and retention cleanup.

Sequential backup orchestration with non-fatal S3 uploads and configurable retention.

Image discovery from Nomad, Trivy scanning, and PostgreSQL result storage.

Batched parallel scanning with transient vs permanent error classification.

Node discovery, SSH-based orphaned directory cleanup, Docker pruning, and registry GC saga steps.

Sequential node cleanup orchestration plus the registry GC saga with deferred scale-back compensation.