Conciseness

The body is dense instruction with zero explanation of concepts Claude already knows and no filler (e.g., "Touch layouts: at least 44x44 pt per interactive element, 8-12 pt between neighbours"). It loses the 5 only to minor trim opportunities: the Layer A skills are described both in the routing table and again in the reference-library table, and the first draft-guard bullet is a very long single sentence that restates the banned patterns in several notations.

Actionability

Guidance is fully executable: copy-paste commands ("bun $SKILL_DIR/scripts/perfection/check-draft-guard.ts <changed files or dirs>", the lighthouse-audit.py and three search.py invocations with flags), exact file paths per request type in the routing table, and concrete numeric rules (44x44 pt hit targets, ~10px glyph padding, one icon set named: Lucide, Heroicons, Radix, Phosphor) with named anti-patterns ("border-l-4 border-indigo-500"). All referenced scripts and files exist in the bundle.

Workflow Clarity

The flow is explicitly sequenced — brief -> build -> subtract -> verify as numbered sections — with validation checkpoints throughout: before-captures "BEFORE the first edit", "Lint before visual QA" with an explicit failure contract ("Exit 1 means a tell is in the draft: remove it"), the required-content reconciliation after subtraction, and the /visual-qa gate with a bounded review loop. This matches the 5 anchor's explicit validation and feedback-loop structure.

Progressive Disclosure

The file is openly a router ("This file is a router over references/; the rules live there") with a request-to-file routing table, and the reference library (design/ Layer A + Layer B, perfection/, ui-ux-db/, designpowers/) is cataloged with _INDEX.md for discovery. Every referenced path I checked (design skills, perfection README and scripts, ui-ux-db search.py, designpowers lanes) exists and is one clearly-signaled level deep, matching the 5 anchor.

Specificity

"Builds, styles, and polishes anything drawn with HTML, CSS, or SVG" names three concrete verbs, then comprehensively enumerates the artifact space: "web UI, pages, components, HTML reports rendered to PDF or print, figures, PNG/SVG diagrams, slides, and images for Notion or Slack". Coverage of the domain is complete with no filler, matching the comprehensive-coverage anchor; a 4 would require minor gaps in the artifact list, which are not present.

Completeness

The "what" is explicit (builds/styles/polishes HTML, CSS, SVG artifacts, with the artifact list) and the "when" is an explicit trigger clause: "Use for any styling, layout, animation, or visual-quality task, or when asked to make something look or feel a certain way." Both are stated with concrete trigger phrases, matching the 5 anchor; the 4 anchor would require the when-clause to be less explicit, which it is not.

Trigger Term Quality

Natural user phrases are well covered: "styling, layout, animation, or visual-quality task", "make something look or feel a certain way", plus format terms (HTML, CSS, SVG, PNG, PDF) and destinations (Notion, Slack). A few common terms a user would naturally say are absent ("frontend", "design", "redesign", "dashboard"), keeping it just below the comprehensive synonym coverage of the 5 anchor; it is clearly above the 3 anchor's missing-common-variations level.

Distinctiveness Conflict Risk

The niche (visual/styling work on HTML, CSS, and SVG output) is clear and the triggers are distinct, but the scope is deliberately broad — "anything drawn with HTML, CSS, or SVG" and "images for Notion or Slack" — creating minor overlap risk with closely related skills (charting/dataviz, presentation, or generic image-generation skills). That is exactly the 4 anchor (mostly distinct, minor overlap with closely related skills) rather than the 5 anchor's minimal conflict risk.