Conciseness

The body is dense with project-specific rules Claude could not infer (the adapter-layer rule, Tabler-only icons, the Plan-template exclusion) and never explains basics like what Tailwind or a component registry is. Minor trimming is possible — the 'Design-System Lint Feedback' section uses multi-sentence prose paragraphs that could be tightened into bullets — so it fits anchor 4 rather than the every-token-earns-its-place level of anchor 5.

Actionability

Guidance is copy-paste executable throughout: exact commands ("pnpm dlx shadcn@latest info --json", "pnpm dlx shadcn@latest add <component> --dry-run", "--diff"), exact file paths ("app/design-system.ts", "app/components/ui/"), named class utilities ("size-*", "gap-*", "data-[state=open]:animate-in"), and concrete composition rules ("Avatar always needs AvatarFallback"). It is not anchor 4 because there are no material gaps — the common cases (add, update, style, animate, icons) all carry specific, executable direction.

Workflow Clarity

A clear numbered 'First Steps' sequence is followed by checkpoints throughout: inspect before overwriting (--dry-run/--diff), 'fix every shadcn/* finding before handing off', 'After adding registry code, read the generated files. Fix import aliases, icon imports, missing subcomponents', and 'inspect its root package.json and .oxlintrc.json' before claiming lint ran. It falls short of anchor 5 because no explicit failure-recovery loop is spelled out (e.g. what to do when lint findings persist or a CLI install fails), while clearly exceeding the implicit-checkpoint level of anchor 3.

Progressive Disclosure

The file has clear, well-ordered section headers and a 'Related Skills' pointer section, but it is a ~183-line single file with no references/, scripts/, or assets/ bundle. Reference-like catalogs (the five shadcn/* lint rules, the component-composition and forms bullet lists, the transitions policy) are inlined in SKILL.md where the rubric's good examples would split them into one-level-deep reference files. It is not anchor 2 because the structure is genuinely good and nothing is buried, but the split-out is clearly indicated.

Specificity

The description lists several concrete capability areas — "shadcn/ui components, registry MCP, theming, and design-system lint feedback" — but presents them as topics rather than the concrete action verbs of the top anchor ("Extract text..., fill forms, merge documents"). It is not merely domain-naming (anchor 3) because four distinct capabilities plus a lint-feedback deliverable are covered, and only minor gaps remain.

Completeness

It explicitly answers both questions: the "what" ("Project-aware shadcn/ui components, registry MCP, theming, and design-system lint feedback") and the "when" via a concrete trigger clause ("Use when adding or changing React/Tailwind UI, a primitive, theme, registry, or component contract in an Agent-Native app"). This mirrors the anchor-5 example structure with concrete trigger phrases, so it is not the anchor-4 case of an only-weakly-specified 'when'.

Trigger Term Quality

Good natural keyword coverage: "React/Tailwind UI", "primitive", "theme", "registry", "component contract" are phrases users would plausibly say when needing this skill. A few natural variations are missing (e.g. "dialog", "button", "add a component"), so it falls just short of the comprehensive synonym/extension coverage of anchor 5 while clearly exceeding the generic one-or-two-keyword level of anchor 2.

Distinctiveness Conflict Risk

"shadcn/ui" is a clear, named niche with distinct triggers (registry, component contract, Agent-Native app), making confusion with unrelated skills unlikely. However, the broad trigger "adding or changing React/Tailwind UI" creates minor overlap risk with a general frontend-design or styling skill, keeping it just below the minimal-conflict anchor 5.