Conciseness

The body is rule-dense with zero padding and zero explanation of concepts Claude already knows ("Fewer high-conviction findings beat lists of nits", "A zero RESULT is a result"), fully assuming competence. It falls short of anchor 5 because the worktree-copy/free-space protocol is restated across § Ethos, § Output Contract and § Mutation-Stability, and the ~300-word inline waiter-poll shell one-liner (§ Mutation-Stability Pairing) is mechanical detail that could be trimmed into a script or reference.

Actionability

Commands are complete and copy-paste ready with every flag and placeholder: `scripts/review-depth --base REF --head REF --repo DIR`, `review-artifact-check --path/--file`, `mutation-stability --worktree [WORKTREE_PATH] --sha [SHA] --test '[TEST_CMD]' ... --stability [SAMPLE_COUNT]`, plus exact shell (`git archive REV | tar -x -C "$dir"`, `mktemp -d "${TMPDIR:-/tmp}/review-copy.XXXXXX"`, `df -Pk "$dir"`), stated defaults (60s/300s budgets), and failure contracts (rerun on exit 124, exit-127 guard in the poll). Anchor 5 fits; the caller-supplied TEST_CMD/BUILD_CMD parameters are legitimately per-change, not gaps.

Workflow Clarity

The Output Contract is an explicit sequence with a real validate-fix-retry loop — capture starting fields, write the findings JSON to the Artifact path, "Self-validate before returning ... Fix until this prints \"ok\": true\"", then return the filled `<output_format>` block — and Mutation-Stability adds bounded phases, budget/timeout rules, retry-on-124, and never-end-turn conditions. Re-review scoping is precise (Fixed items suppressed unless the defect persists; re-report verbatim with the recorded sha). Anchor 5's explicit validation steps with feedback loops are fully met, including for the batch-like copy/build/test operations.

Progressive Disclosure

The references that exist are well-signaled and one level deep (`references/finding-disposition.md` with a clear ownership statement, `scripts/review-depth`, `scripts/mutation-stability`), but four paths cited from the body — `workflows/review.md`, `workflows/codebase-review.md`, `workflows/qa-review.md`, and `schemas/review-finding.md` — do not exist in the bundle, and `references/perf-qa.md` exists but is unreachable from SKILL.md (it is loaded only via the missing qa-review.md). This is more than anchor 4's "minor organization gaps", matching anchor 3; it is not 2 because the references that do resolve are clearly signaled and never nested.

Specificity

"reviewing a diff, classifying findings, or returning a verdict" names three actions but gives them no concrete objects — it never says what is reviewed (code, PRs) or what a finding or verdict is about, and it omits the QA-label and artifact work the skill actually does. It goes beyond anchor 3's 1-2 actions but lacks the object-rich specificity of anchor 4's example, so the gap is more than minor.

Completeness

The description is entirely a load trigger — "Load when reviewing a diff, classifying findings, or returning a verdict" — with no 'what' clause: it never states what the skill does or produces (finding JSON artifacts, verdicts, QA-label workflows). This is exactly anchor 2's 'only when is present without what'; it cannot be 3 because a clear 'what' is absent, and not 1 because the 'when' is explicit and specific.

Trigger Term Quality

"reviewing a diff" is a natural user phrase, but "classifying findings" and "returning a verdict" are the skill's internal workflow vocabulary, and the common variations users actually say — "code review", "PR review", "pull request", "QA" — are all missing. This matches anchor 3 (some relevant keywords, missing common variations) rather than anchor 4's good coverage.

Distinctiveness Conflict Risk

The review/verdict niche ("classifying findings", "returning a verdict") is clearly carved out against its sibling skills (orch, code-quality, docs-writing, project-management), with "reviewing a diff" an unlikely trigger for the wrong skill. It is not 5 because "review" and "findings" are broad words that could still collide with a closely related review skill, matching anchor 4's minor overlap risk.