The pinned digest named the arm64 manifest, so an x86 machine pulled it and the
container died with 'exec format error' on every restart. It never showed while
the lab ran its own registry: the harness pushed the WORKSTATION's copy, which
is amd64, and every machine then pulled that under a digest the registry had
just assigned. The registry was quietly correcting the architecture too.
Claude-Session: https://claude.ai/code/session_01LrgweAeERJYBg88c5cKDzF