Conciseness

The body is dominated by token-efficient checklists, commands, and a consequences table with no explanation of concepts Claude already knows. Minor trimmable padding exists — the closing 'Core Principle' section ('Complete work = Code + Docs + Tests + Verification') and the 'Key Question' blockquote are motivational rather than actionable — so it sits at 'efficient with minor instances that could be trimmed' rather than the lean 5 anchor.

Actionability

Mostly executable guidance: concrete commands ('pnpm lint', 'pnpm type-check', 'pnpm test', 'git diff --name-only') and specific paths ('.trellis/spec/backend/', 'db/migrations/'). It is not a 5 because some checks lack their executable form (e.g., 'No console.log statements' has no search command) and 'Run $update-spec manually first' defers to another skill without detail; it is well above the 3 anchor's pseudocode/incomplete level.

Workflow Clarity

The 'Quick Check Flow' gives a clear sequence (code checks → view changes → check relevant items) and the Block Rule is an explicit validation gate with recovery ('do NOT finish. Run $update-spec manually first'), with must-pass commands as checkpoints. Minor gaps keep it at 4: no recovery steps when lint/type-check/tests fail, and the manual-testing items lack verification steps. This is a review checklist, not a destructive/batch operation, so no cap applies.

Progressive Disclosure

The skill is a single self-contained file with clear section headers and no bundle files, so nothing is buried or nested. Good structure with minor gaps — the awkward '2.5' section numbering between 2 and 3, and the 'Common Oversights'/'Relationship to Other Commands' sections could be tightened. The under-50-lines exception for a 5 does not apply to this ~145-line body, so it fits the 4 anchor rather than 5, and is clearly above the 3 anchor's disorganized/buried-reference level.

Specificity

The description enumerates eight concrete coverage areas — 'lint, typecheck, tests, code-spec sync, API changes, database migrations, cross-layer verification, and manual testing' — plus a specific blocking behavior ('Blocks commit if infra or cross-layer specs lack executable depth'), matching the anchor for multiple specific concrete actions with comprehensive coverage. It is not a 4 because there are no minor gaps: every major pre-commit concern area is named explicitly.

Completeness

Both questions are answered explicitly: what ('Pre-commit quality checklist covering lint, typecheck, tests, code-spec sync, API changes, database migrations, cross-layer verification, and manual testing') and when (three concrete trigger conditions in the 'Use when' clause). This matches the top anchor; it is not a 4 because the 'when' is explicit and specific rather than merely present or vague.

Trigger Term Quality

Natural trigger phrases are present: 'Use when code is written and tested but not yet committed, before submitting changes, or as a final review before git commit', plus 'Pre-commit quality checklist' — terms users would naturally say. It falls short of the 5 anchor because common synonyms such as 'pull request', 'PR', 'ship', or 'ready to merge' are absent, leaving a few natural terms missing.

Distinctiveness Conflict Risk

The 'Pre-commit' positioning and scope (docs sync, migrations, manual testing, spec depth) form a clear niche distinct from generic review skills, but 'as a final review before git commit' creates minor overlap risk with code-review/diff-review skills. It is mostly distinct with minor overlap, fitting the 4 anchor rather than the minimal-conflict 5 or the broader-overlap 3.