Conciseness

Dense, action-oriented numbered steps with no concept explanations Claude already knows and no padding; every line is an instruction that earns its place.

Actionability

Provides executable commands ('npx ai-devkit@latest lint --feature <name>'), concrete file paths, explicit task statuses, and specific tracing events; per the instruction-only scoring note, actionable concrete guidance earns the top score.

Workflow Clarity

Clear numbered sequences for each phase with an explicit lint validation gate and error-recovery routing ('If major deviations exist, return to dev-design... or Execute Plan'); this is not a destructive/batch/XML/db context, so no feedback-loop cap applies.

Progressive Disclosure

A self-contained, under-50-line skill with well-organized sections (Phase Contract, Execute Plan, Check Implementation) and no need for external references; per the simple_skills note this earns the top score.

Specificity

Lists multiple concrete actions — 'executing feature plans', 'checking implementation against design', 'update implementation docs', 'verify code matches design' — matching the score-3 anchor rather than the partial score-2.

Completeness

An explicit 'Use when...' clause answers both what (implementation phase guidance) and when (implement tasks, update docs, verify, run phases 5/7), matching the score-3 anchor.

Trigger Term Quality

Natural user phrasings like 'implement planned tasks', 'update implementation docs', and 'verify code matches design' give good coverage, even though 'dev-lifecycle phases 5 and 7' is jargon.

Distinctiveness Conflict Risk

Scoped to a specific tool and lifecycle phase with explicit phase numbers, giving a clear niche; minor sibling overlap with dev-review on 'verify code matches design' is mitigated by the implementation/execute framing.