Every main push since the concurrency change cancelled two of the three
image builds: the build job's concurrency group named only the ref, so
the app, updater and computer legs of one run shared it and cancelled
each other, and the publish job never ran. Main has not published an
edge image since. The build and publish groups now name the matrix leg.
The Playwright report publisher also read the jobs of a run's latest
attempt, so a re-run already in progress made it fail on an empty
conclusion. It now reads the attempt that finished.
Claude-Session: https://claude.ai/code/session_01R8L4XgqjAemFR2remB5hVY
Co-authored-by: Claude <noreply@anthropic.com>
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