skill-discoverability-audit

@vndkubi

Audit all SKILL.md files for runtime discoverability quality. Checks description keyword coverage, argument documentation, user-invocable vs model-invocable alignment, routing table reachability, and progressive loading compatibility. Produces a scored report with actionable fixes. Use after bootstrap or when skills seem undiscoverable. Keywords: skill audit, discoverability, description quality, skill routing, keyword coverage, model invocation.