Conciseness

The body is mostly efficient, dense instructions, but includes notable repetition and padding: the description's exclusions are restated ('Do not use this skill for broad UX critique...'), the same-image-comparison rule appears twice ('Do not pretend separate image views are side-by-side comparison' and again in step 2 as 'Capturing screenshots is not enough...'), and wordy lines like 'It is incredibly important to check fonts carefully for fidelity, including looking up similar typefaces...' could be trimmed. This matches anchor 3 ('mostly efficient but includes some unnecessary explanation or could be tightened') — above anchor 2 because there is no tutorial-style explanation of concepts Claude already knows, below anchor 4 because several duplicated passages earn no new information.

Actionability

Concrete, executable guidance throughout: a copy-paste report template with per-finding fields (Location/Evidence/Impact/Fix), an explicit design-qa.md contents checklist, exact severity definitions P0–P3, and a hard binary gate ('final result must be exactly passed or blocked'). Anchor 5 is not fully met because a few steps stay high-level — e.g. 'use design context and screenshot tools when available' and 'follow the Browser Choice rule' defer specifics without inline examples — so anchor 4 ('mostly executable guidance... minor gaps') is the closest fit.

Workflow Clarity

The six-step workflow is clearly sequenced with an explicit feedback loop (record finding → apply fix → recapture at same viewport/state → recompare), a blocked/pass gating rule, and validation checkpoints ('If either artifact cannot be opened... write design-qa.md with final result: blocked'; 'Do not say a design matches... until the required fidelity surfaces have been checked'). This matches anchor 5: clear sequence, explicit validation, feedback loops, and a final checklist.

Progressive Disclosure

Structure is good: the deep checklists live in the real, one-level-deep references/qa-rubric.md, which is clearly signaled ('Read qa-rubric when the QA pass spans more than a quick visual check'), and cross-skill pointers (audit, critical-overrides, index#browser-choice) are linked inline. It falls short of anchor 5 because the 'Required Fidelity Surfaces' section inlines detailed per-surface checklists (fonts, colors, imagery, including the long fail-QA asset-substitution rule) that substantially duplicate references/qa-rubric.md content and could largely live in the reference file.

Specificity

The description names the domain ('Internal prototype QA helper') and one concrete action — comparing 'a source visual target and a rendered implementation... before handoff' — but does not enumerate several specific actions the way the 4–5 anchors expect. It is more context-routing than a list of capabilities, and anchor 3 ('names domain and 1-2 concrete actions, but not comprehensive') is the closest fit; it is above anchor 2 because the compare-before-handoff action is concrete, but below anchor 4 because no additional concrete actions (reporting, fix list, severity rating) are stated.

Completeness

Both halves are explicit: the what ('compare a source visual target and a rendered implementation... before handoff') and the when ('Use only after a Product Design prototype, URL-to-code build, or image-to-code build...'), plus an explicit when-not clause. This matches anchor 5's 'clearly and explicitly answers both what AND when with concrete trigger phrases'.

Trigger Term Quality

Good keyword coverage of the domain's natural terms: 'prototype QA', 'Product Design prototype', 'URL-to-code build', 'image-to-code build', 'design', 'handoff', plus routing terms 'UX critique', 'design critique', 'product audits', 'flow reviews', 'audit'. It is below anchor 5 because common synonyms a user might say — 'Figma', 'mockup', 'screenshot', 'visual comparison', 'design review' — are absent, but well above anchor 3's thin coverage.

Distinctiveness Conflict Risk

The skill has a clear niche (internal pre-handoff design QA) with active de-confliction: 'Do not use for broad UX critique, design critique, product audits, or flow reviews; route those user-facing requests to audit'. This is stronger than anchor 4's 'minor overlap risk' — conflicts with adjacent skills are explicitly resolved, matching anchor 5.