Mostly efficient and well-organized, but the axis intros restate concepts Claude already knows — e.g. 'Arrange: Set up the object to be tested. Act: Act on the object... Assert: Make claims about the object' and a multi-sentence quote on Assertion Roulette — which is tighter than the verbose 'explains concepts Claude knows' 1-anchor but does not meet the 'lean; every token earns its place' 3-anchor. The bulk (anchor tables, tiebreakers, worked example, anti-patterns) earns its place; the grounding prose around basic AAA/assertion patterns could be trimmed. It is not a 1 because the core content is concrete rubric material, not generic fluff.

Provides per-level anchor tables, executable tiebreaker procedures ('count the Acts', 'hide the body and read the name alone'), a copy-paste-ready worked example output, exact arithmetic steps, and an explicit banned-words/marker list — matching 'fully executable... specific examples; copy-paste ready'. Per the rubric's code-vs-instruction note, absence of code is not penalized for an instruction-only skill when guidance is this actionable. It is not a 2 because the guidance is complete and specific rather than pseudocode-like or missing key details.

The 'How to use' section is a clear 6-step sequence with explicit guardrails ('Mark unmeasurable axes n/a rather than guessing', 'Confirm this is a coaching read, not a gate'), a worked example, and checklists via the Feedback rules and Anti-patterns tables, matching 'clear sequence with explicit validation steps; checklists'. It is not a 2 because checkpoints are explicit (n/a handling, axis-count printing, the 2-vs-4 tiebreaker loop) rather than implicit.

Core scoring and feedback live inline while the aggregation/reporting conventions are split into a real one-level-deep reference, referenced twice and well-signaled via links to references/trend-and-rollup-reporting.md (verified to exist). This matches 'clear overview with well-signaled one-level-deep references'. It is not a 2 because the split is appropriate and the reference is clearly signaled rather than buried.

Lists multiple concrete actions — 'Scores test files 1 to 5 on six design axes (AAA phase separation, single-responsibility, naming, fixture coupling, magic literals, setup time)', 'turns the scores into growth-framed feedback and a per-author trend report' — matching the 'lists multiple specific concrete actions' anchor. It is not a 2 because the actions are enumerated comprehensively rather than named only in part. Third-person voice ('Scores...') is correct.

Explicitly answers both what (scores files 1-5 on six axes, produces growth-framed feedback and a trend report) and when (an explicit 'Use when...' clause with three concrete scenarios), matching the 'clearly answers both what AND when with explicit triggers' anchor. It is not a 2 because the when is explicit, not merely implied.

The 'Use when...' clause names natural scenario phrases users would say — 'onboarding a new engineer', 'a team deliberately ramping up test discipline', 'a quarterly per-author trend', 'a test diff needs a graded coaching read rather than a merge verdict'. These are concrete, natural triggers, matching 'good coverage of natural terms users would say'. It is not a 2 because common scenario variations are covered, not just one generic keyword.

Explicitly carves its niche and delegates the rest — 'Owns the scoring and the write-up only: the conventions being scored live in a separate conventions catalog such as test-code-conventions, and block-or-approve gating belongs to an adversarial review.' This makes it unlikely to trigger for the wrong skill, matching the 'clear niche with distinct triggers' anchor. It is not a 2 because the boundary against sibling skills is stated outright rather than merely implied.