dagster 1.12.8 has no per-deployment imagePullSecrets field: deployment-user.yaml reads the dagster-user-deployments subchart value and the run launcher helper reads the parent chart value. The pull secret nested under the deployments[] entry was silently discarded, which would have produced ImagePullBackOff against a values file that reads as correct.
Also records the unresolved 1.13.19 vs 1.12.8 skew between these images and the sandbox control plane.
Changelog: fixed
b47c530d46