Conciseness

Sections are tight (Quick Reference, Check, Fix, Explain, Code Review) with no padding or library tutorials, matching anchor 4. It misses anchor 5 because the opening sentence explaining why duplicate labels confuse screen readers and the "Explain" section restate knowledge Claude already has and could be trimmed.

Actionability

Guidance is concrete and specific — "Associate each form input with exactly one <label> element", "Consolidate multiple labels into a single <label> or use aria-labelledby" — with executable HTML examples deferred to the real references/rule.md, matching anchor 4. It is not a 5 because the Check step gives no concrete detection method (e.g., axe rule id, DOM query, or grep pattern) inline.

Workflow Clarity

The Check → Fix → Explain → Code Review sections form a clear sequence, and the Code Review section includes verification direction ("note how to verify the fix with browser accessibility tooling or assistive tech"), matching anchor 4. Not a 5 because verification is mentioned as a note rather than an explicit checkpoint step, and the sequence is implied by section order rather than stated.

Progressive Disclosure

The body is a concise overview with a clearly signaled, one-level-deep reference — "For full implementation details, code examples, and framework-specific guidance, see references/rule.md" — and that file exists and itself contains no further reference nesting, exactly matching anchor 5.

Specificity

Lists several specific concrete actions ("Check native semantics first, then inspect keyboard behavior, focus flow, accessible names, and screen-reader output where relevant"), matching anchor 4. It falls short of anchor 5 because it never states what the skill actually does about the label problem (e.g., consolidating labels or using aria-labelledby).

Completeness

Both what ("Check native semantics first, then inspect keyboard behavior, focus flow, accessible names, and screen-reader output") and when ("Use when reviewing rendered HTML...") are explicitly present. Not a 5 because the when-clause awkwardly embeds the rule name mid-sentence ("related to Use a single label for each form field") instead of crisp, concrete trigger phrases like "when a form field has multiple labels".

Trigger Term Quality

Includes good natural keywords users would say — "rendered HTML", "interactive components", "label", "form field", "screen-reader" — but misses common variations and synonyms like "accessibility", "a11y", or "forms" that anchor 5 expects.

Distinctiveness Conflict Risk

The rule-name anchor ("Use a single label for each form field") gives it a clear niche, but the generic review-conditions prefix ("reviewing rendered HTML, interactive components, or design-system patterns") would be shared verbatim by sibling accessibility rule skills, creating minor overlap with closely related skills per anchor 4.