Updated MAC CLI governance pointers

Property	Value
description	Aligned `MAC CLI` repo guidance and local `.codex` pointers with the central `MAC` governance source.
version	1.0.1
type	Update
related	MAC CLI, MAC

• Aligned repo-root guidance and local .codex pointers with the new central mac governance source.
• Kept the shipped MAC CLI command surface unchanged from the v1.0.0 stable baseline.
• Treated this release as governance alignment and release-process hardening, not as a CLI behavior change.