Remove standard_version from layer.yaml and the INTENT.md frontmatter (A12),
mark layer.yaml derived: true / derived_from: INTENT.md (A11), and change the
conformance checker and its tests in the same commit so the conforming
declaration does not fail as malformed.
The checker now requires the INTENT.md layer: key, rejects standard_version
in either form, checks the layer against the closed four-token vocabulary
(A9), and reports a layer/role disagreement between the two forms after an
ASCII case-fold. Nothing is re-spelled: INTENT.md keeps Engine/PIP and
layer.yaml keeps engine/pip. pep-stance.yaml and pip-claims.yaml keep their
standard_version; neither is a layer declaration.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Assistant: claude-code
Assistant-Model: opus
Assistant-Process: 63291@bnt-lap001
Assistant-Session: 8bd77868-ca68-4f49-bb1e-d539ecc0d703