Two issues in the pipeline:
1. cancel-in-progress: true could cancel a running deployment when a
new push arrives. Deployments should never be interrupted mid-flight.
Changed back to false.
2. The prod-release job bumps the version, commits, and tags — but never
publishes the release version to npm. The dev-publish step publishes
@dev, test-verify promotes to @next, but @latest was never updated.
Users running 'npm install -g gsd-pi' would get stale versions.
Added 'Build release' and 'Publish release to npm @latest' steps after
the git tag push, with idempotent guard for already-published versions.
e45bff419d