Phase 0 deliverable — eval-first foundation. Two new test files plus the
registry:
1. test/skill-coverage-matrix.ts — single source of truth mapping each
skill to its gate-tier + periodic-tier test files. SKILL_COVERAGE
record with 51 entries; every gstack skill on disk has at least one
gate-tier entry.
2. test/skill-coverage-matrix.test.ts — CI gate. Asserts every skill on
disk has a registry entry AND that gate[] is non-empty. Catches
"skill added but eval not registered" the moment a new SKILL.md
lands.
3. test/skill-coverage-floor.test.ts — per-skill structural compliance
(FREE, file-IO only). For each of 51 skills, verifies:
- SKILL.md exists
- Frontmatter well-formed (name + description fields)
- Catalog-trim contract (inline description ≤ 250 chars, or block form)
- Generated header present (edit .tmpl, not .md)
- Body ≥ 200 bytes (non-trivial content)
- No unresolved {{TEMPLATE}} placeholders leaked
The "floor" is the minimum eval that every skill ships with. Skills that
need deeper behavioral testing get additional entries in their coverage
record (e.g., ship has skill-e2e-ship-idempotency + workflow + floor).
Future skills only need to add the floor entry and the matrix gate
unblocks them.
Codex 2nd-pass critique #1 mitigation: eval-first floor is structural
compliance (the testable part) — judgment-skill behavior gets layered
periodic-tier evals on top. We don't pretend the floor proves
correctness, only that the skill structurally compiles.
Test plan:
- bun test test/skill-coverage-matrix.test.ts: 4 pass (matrix shape + coverage)
- bun test test/skill-coverage-floor.test.ts: 309 pass (6 checks × 51 skills + 3 registry-level)
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Garry Tan