nightly.yml had two observability gates that release.yml lacked:
- "Validate observability compose config" (docker compose config --quiet)
catches missing env vars and YAML errors before any containers start
- "Assert observability stack health" checks obs-loki/prometheus/grafana/tempo
are healthy after up --wait, covering services without healthcheck directives
Mirrors the nightly.yml steps verbatim so the production deploy path is at
least as well-verified as the nightly staging path.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
f628ab6435