gz adr fidelity: ADR-0.34.0
  Assertions: 2

  PASS  The foundation kind is closed to new authoring: `gz plan create --kind
foundation` is rejected at the command layer even when the request is otherwise
well-formed (valid next-free nominal foundation semver), rather than scaffolding
a 75th foundation ADR.
        command:  uv run gz plan create sunset-fidelity-probe --kind foundation
--semver 0.0.75 --dry-run
        expected: 1  observed: 1

  PASS  Every on-disk `kind: foundation` ADR is grandfathered in the committed
manifest or demoted to pool, with none stranded in Pending-with-attested-work
limbo.
        command:  uv run gz validate --taxonomy
        expected: 0  observed: 0

  Summary: 2 pass, 0 fail
