Audits a target repo's AGENTS.md file(s) for embedded secrets, structural
completeness against the agents.md common-sections checklist, and drift
(referenced commands/paths that no longer resolve). First active skill in
the core plugin — kyberforge is scoped to marketplace-factory meta-tooling,
not generic target-repo documentation (see ADR-0012). Moves the agentsmd
research corpus from plugins/kyberforge to plugins/core to match.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>