Conciseness

The body is mostly tight process guidance, but the no-implementation gate is restated four ways (HARD-GATE block, checklist, Rationalization Table, Red Flags), the 30-line graphviz diagram duplicates the 9-item checklist, and the "Design for isolation and clarity" section explains modularity benefits Claude already knows. This is anchor 3 — some unnecessary explanation that could be tightened — rather than anchor 4, where over-explanation is only minor.

Actionability

For an instruction-only skill the guidance is highly concrete: exact spec paths (`docs/rubypowers/specs/` with legacy `docs/superpowers/specs/` handling), the filename format `YYYY-MM-DD-<topic>-design.md`, verbatim user-facing messages, a batching rule (up to 4 independent multiple-choice questions), and a 4-point self-review checklist. It falls to anchor 4 rather than 5 because two steps reference files (`spec-document-reviewer-prompt.md`, `skills/brainstorming/visual-companion.md`) that are not present in the bundle, making them non-executable as written.

Workflow Clarity

The process is fully sequenced with explicit validation checkpoints and feedback loops: an ordered 9-item mandatory checklist, per-section design approval, a spec self-review with fix-inline loop, a user review gate with "Wait for the user's response" and re-run on changes, decision diamonds in the flow graph ("no, revise", "changes requested"), and a Red Flags section that routes back to the checklist. This matches anchor 5 (clear sequence, explicit validation, feedback loops, checklist); no destructive/batch cap applies.

Progressive Disclosure

Scored against the actual bundle: the body's only two file references (`skills/brainstorming/visual-companion.md` and `spec-document-reviewer-prompt.md`, described as "same directory as this skill") do not exist in the bundle, while the five scripts/ files that are provided (server.cjs, helper.js, frame-template.html, start/stop-server.sh — the visual companion implementation) are never mentioned in the body. Structure and signaling within SKILL.md are decent, matching anchor 3, but broken reference paths and undiscoverable scripts keep it below anchor 4's "minor organization gaps".

Specificity

The only concrete phrases — "creating features, building components, adding functionality, or modifying behavior" — describe the user's work, not the skill's own capabilities; what the skill actually does (collaborative design dialogue, spec writing, handoff to planning) is never stated. This matches anchor 2 (domain named, skill's actions absent) rather than anchor 3, which requires 1-2 concrete actions of the skill itself.

Completeness

"Use when starting any creative work... before writing any implementation code" answers "when" explicitly and well, but the "what" is entirely missing — the description never says the skill turns ideas into designs and specs. This is precisely anchor 2's "only 'when' is present without 'what'"; anchor 3 requires a clear "what".

Trigger Term Quality

Natural trigger phrases like "creating features", "building components", "adding functionality", "modifying behavior", and "before writing any implementation code" give good verb-level coverage. It falls short of anchor 5 because common phrasings such as "design", "new feature", or "scaffolding a project" are missing.

Distinctiveness Conflict Risk

"before writing any implementation code" carves a distinct pre-implementation niche, but "starting any creative work" is broad enough to fire on nearly every feature request, creating overlap risk with implementation and design skills. Anchor 3 (somewhat specific, still overlaps with similar skills) is the best fit — not 4, since the overlap risk extends beyond closely related skills.