Conciseness

The body is lean: dependency rules, layer decisions, and naming norms are expressed as compact tables and directory trees, and nothing explains general React/TypeScript concepts Claude already knows. Every section is FSD-specific or project-normative, matching the "every token earns its place" anchor.

Actionability

Guidance is concrete and executable throughout: the src/ tree, layer import matrix, decision-guide table, a complete inline TypeScript entity slice with public API, a violation→fix quick-reference, and numbered generation rules. These cover the common cases (decide a layer, scaffold a slice, fix a violation); the one elided ui/ segment in the inline example is consistent with "all segments optional" and fully specified in references/slice-examples.md.

Workflow Clarity

"Workflow: Adding a New Slice" is a clearly sequenced 6-step process with validation at step 4 ("Validate imports — verify all imports flow downward only") and an explicit final checklist at step 6 ("(a) no upward imports, (b) external code only imports from index.ts, (c) no export *"), while the Common Violations Quick-Reference table supplies the error-recovery fixes. Explicit validation steps plus a checklist match the 5 anchor; scaffolding is not destructive or batch, so no cap applies.

Progressive Disclosure

The body is a well-organized overview with a "Deep Dives" table mapping each need to one of four reference files, all of which exist and are one level deep (verified: layers.md, segments.md, claude-md-template.md, slice-examples.md). The body's inline example is a concrete orientation slice while the reference holds the generic template — an appropriate split, not duplication — and fetching the large official spec is explicitly gated against reflexive context waste.

Specificity

The description lists multiple concrete actions — "scaffolding compliant folder structures, validating layer boundaries and import directions, detecting and fixing layer violations, and teaching FSD conventions" — covering the full capability set (enforce, scaffold, validate, detect, fix, teach). It matches the 5 anchor's comprehensive coverage; it is not a 4 because no capability area is left with gaps.

Completeness

It explicitly answers both questions: the first sentence states what the skill does, and "Use when asked to..." / "Triggers on any React/TypeScript task involving..." gives explicit when-guidance with concrete trigger phrases. This matches the 5 anchor's structure exactly, and the 'Use when' clause is present so the completeness cap does not apply.

Trigger Term Quality

Natural phrases a user would actually say are comprehensively covered: "'create a page', 'add an entity', 'build a widget', 'scaffold FSD structure', 'refactor to FSD', 'where should I put this code', 'what layer does X go in', 'organize my React code', 'fix layer violation', 'review my FSD structure'" — including question-form variants — alongside the technical vocabulary (layers, slices, segments, cross-layer imports, public API). File extensions are inapplicable in this folder-architecture domain, so nothing natural is missing.

Distinctiveness Conflict Risk

The description carves out a clear niche and explicitly de-scopes sibling skills: "Covers code structure and layer boundaries only — for rendering performance use react-best-practices, for language and typing questions use typescript-development." Trigger phrases are all FSD-specific, so conflict risk is minimal.