Replace job‑level continue‑on‑error with a step‑level setting and export build_succeeded from the docker/build‑push step to drive the fallback condition, guaranteeing the self‑hosted job runs whenever the GitHub runner fails (e.g., disk space) instead of being masked by a successful job conclusion. Update publish/finalize gating to rely on the explicit output flag (or self‑hosted success) so releases proceed only when at least one build path publishes successfully.
