Conciseness

The body is lean (~30 lines) with well-organized sections and no concept explanations Claude already knows, but 'Check' and 'Fix' restate Quick Reference bullets nearly verbatim and 'Explain' is generic, giving minor trim opportunities that keep it below the 'every token earns its place' anchor.

Actionability

Concrete specifics are present (aria-busy, aria-live, 'skeletons for content, spinners for actions'), but the body itself contains no executable code or commands and asks Claude to 'describe the measurement method used to confirm the issue' without naming one — concrete guidance that is incomplete. As an instruction-only skill the missing code is not itself penalized, yet the guidance still lacks key implementation details.

Workflow Clarity

The Check → Fix → Explain → Code Review sequence is coherent for a simple single-purpose skill with no destructive or batch operations, but 'Verify that loading states are displayed' does not specify how to verify, leaving minor checkpoint gaps typical of anchor 4 rather than 5.

Progressive Disclosure

The short overview body defers implementation details, code examples, and framework-specific guidance to a single clearly-signaled, one-level-deep reference ('see references/rule.md') that exists and contains exactly that content — a clean overview-plus-reference split with easy navigation.

Specificity

The description names the domain and two concrete actions ('auditing slow page loads, heavy assets, or rendering delays' and 'Verify the actual bottleneck in DevTools, Lighthouse, or field data'), matching the '1-2 concrete actions, but not comprehensive' anchor; it does not list several actions, so it does not reach 4.

Completeness

Both parts are present: an explicit 'Use when auditing slow page loads...' trigger clause and a concrete what ('Verify the actual bottleneck in DevTools, Lighthouse, or field data before recommending changes'). Not 5 because the core capability (implementing loading indicators) is only implied rather than explicitly stated as an action.

Trigger Term Quality

Natural phrases users would say are present ('slow page loads', 'heavy assets', 'rendering delays', 'loading indicators'), giving good coverage, but common synonyms like 'spinner', 'skeleton screens', and 'loading states' are missing, so it falls short of comprehensive anchor 5.

Distinctiveness Conflict Risk

The 'Show loading indicators' niche is distinct with specific triggers, but phrases like 'slow page loads' and 'heavy assets' create minor overlap risk with general performance-auditing skills, matching 'mostly distinct; minor overlap risk'.