Clarify that validate and automated skill-review are necessary but not sufficient for skill and risky guidance changes. Add the requirement consistently to contributing guidance, the quality bar, and the PR checklist so maintainers explicitly review logic, safety, failure modes, and risk labeling before merge.
Consolidate the repository into clearer apps, tools, and layered docs areas so contributors can navigate and maintain it more reliably. Align validation, metadata sync, and CI around the same canonical workflow to reduce drift across local checks and GitHub Actions.
