trace-check (deprecated)

This skill was consolidated into doc-validator in plugin v0.4.0. The bidirectional traceability mechanics - >=95% symmetry scoring, orphan detection, safe auto-fix with timestamped backup + rollback - are preserved verbatim under doc-validator's traceability pass.

Migration: replace any trace-check <target> invocation with /aidoc-flow:doc-validator <target> (traceability pass runs by default).

This stub will be removed in plugin v0.5.0.