Audits one NestJS feature against its documented roadmap on a specific Git branch and returns an evidence-backed implementation, gap, legacy, bug, and blocker report. Use when asked to audit a feature, validate feature completeness, compare code with a roadmap or acceptance plan, run a feature gap analysis, review migration status, or invoke /audit_feature with a feature name and optional branch. It stops when no clear roadmap is available and does not implement fixes. When other skills also apply, reconcile ownership before mutation.
