skill-composition

Objective

For one skill SKILL.md (catalog, .skill-proposals draft, or lifecycle fixture), extract invoke/forbid/require edges to catalog skill names and judge consistency. Return exactly one primary verdict: composition_ok, composition_fail with closed findings, or blocked. Ignore manner-only constraints. Do not edit files or build a full-repo graph.

Input

Exactly one of:

• target — name listed in skills/INDEX.md with skills/<name>/SKILL.md
• proposal_path — .skill-proposals/<name>/SKILL.md
• fixture_path — skills/lifecycle-build/fixtures/**/SKILL.md

Empty, missing, or path outside those roots → blocked. If skills/INDEX.md is missing or unreadable → blocked.

Subject may be non-INDEX for proposal/fixture. Every edge target must resolve as INDEX ∩ skills/<name>/SKILL.md.