Conciseness

The body is long but mostly load-bearing (observation log, matrix schema, worked rows, anti-patterns) with little concept-explanation padding; a few illustrative sections could be trimmed.

Actionability

Provides concrete tools, a full observation-log example, exact matrix column shapes with worked example rows, and explicit downstream-skill routing — fully executable guidance.

Workflow Clarity

A clearly sequenced 5-step workflow with explicit validation checkpoints ([verbal, unconfirmed] tagging, Confidence column gating automation, probe-then-confirm-or-falsify on first run) and anti-pattern failure modes.

Progressive Disclosure

Overview lives in SKILL.md while bulk detail (full heuristic catalog, full worked walk) is split into two one-level-deep, clearly-linked bundle files that both exist.

Specificity

Multiple concrete actions are listed (produces a test-case matrix, structured exploration via Playwright trace / DevTools / accessibility tree, the four named heuristic models) with comprehensive coverage of what the skill does.

Completeness

Explicitly states both what it does (build a test-case matrix from a live undocumented feature via structured exploration plus four heuristic models) and when to use it ('Use when there is no story, no AC, and no documentation').

Trigger Term Quality

Includes natural trigger phrases like 'no story, no AC, and no documentation' and 'live feature', but leans technical and misses some common synonyms a user might say.

Distinctiveness Conflict Risk

Carves a clear niche (live, undocumented features only), explicitly distinguishes itself from exploratory session charters and story-driven skills, giving minimal conflict risk.