Conciseness

The body is mostly efficient templates and rules, but it carries unnecessary weight: the 12-line "Credits & Inspiration" table contributes nothing to execution, rules are duplicated across sections (placeholder ban in Phase 4 Step B and Anti-Pattern 3; story-size limits in Phase 3 and Proactive Triggers), and asides define concepts Claude already knows ("context rot — the silent quality degradation as the context window fills"). This fits 'mostly efficient but includes some unnecessary explanation or could be tightened' rather than the minor-trim profile of the 4 anchor.

Actionability

Every phase ships a copy-paste-ready output template (CODEBASE MAP, IMPLEMENTATION PLAN, PONYTAIL CHECK, SELF-REVIEW, HANDOFF, VERIFICATION REPORT) with concrete worked examples such as "[KNOWN] UserService.ts → calls → AuthService.authenticate()" and "Add `validateToken(token: string): boolean` to AuthService" vs the too-big "Build the authentication system". Guidance is fully executable for a process skill — exact formats, exact thresholds (>300 lines, >3 files, >2 acceptance criteria), and exact inline comment conventions. Not below 5 because no common case lacks a concrete template.

Workflow Clarity

The five phases are strictly sequenced with explicit validation checkpoints and feedback loops: "Never write code that depends on an [UNKNOWN]", "If any UNKNOWN exists, stop and resolve it before writing code", "Do not proceed to the next story until the user confirms", and the gap-recovery loop "If any story has a gap, write a micro-story to close it and run Phase 4 again". This matches the 5 anchor's 'explicit validation steps; feedback loops for error recovery; checklists'. A minor wrinkle — the short-circuit section drops Map for abbreviated loops while the Modes section keeps it — is not enough to drop a level.

Progressive Disclosure

The single file is well-sectioned with clear headers, templates, and tables, and no references are needed for the core loop, so navigation is easy. But it is a ~270-line monolith where the Credits & Inspiration table and possibly the per-phase templates could live in separate one-level-deep reference files, matching 'good structure; most content is appropriately placed; minor organization gaps' rather than a cleanly split overview.

Specificity

Concrete named actions: "Runs a disciplined Discuss -> Map -> Decompose -> Execute -> Verify loop", "no invented APIs, no assumed imports, no placeholder code", and a "YAGNI ladder that deletes unnecessary code before it is written". Minor gaps remain — phrases like "grounds code in verified structure" are slightly abstract and the concrete artifacts the user receives (codebase map, story list, verification report) are not named — so it fits 'several specific actions; minor gaps' rather than the fully comprehensive anchor.

Completeness

Both what and when are explicit: the 'what' names the five-phase loop, the anti-hallucination guarantees, and the YAGNI ladder; the 'when' gives concrete trigger conditions ("high-stakes, complex, or spans existing code (auth, databases, migrations, multi-file features)", "explicitly asks to plan carefully before coding, avoid hallucinated code") plus an explicit not-for clause. This matches the anchor 'clearly and explicitly answers both what AND when with concrete trigger phrases'.

Trigger Term Quality

Natural user phrasings are present: "plan carefully", "avoid hallucinated code", "work rigorously", plus concrete trigger domains ("auth, databases, migrations, multi-file features") and anti-triggers ("trivial edits, typos, throwaway one-off scripts"). A few common variants are missing (e.g. "don't make up APIs", "be careful with this codebase"), matching 'good keyword coverage; a few natural terms missing' rather than the comprehensive synonym coverage of the 5 anchor.

Distinctiveness Conflict Risk

The zero-hallucination framing ("no invented APIs, no assumed imports, no placeholder code") carves out a distinct niche with a clear selection phrase ("avoid hallucinated code"). Risk of overlap remains with generic planning or rigorous-coding skills since "complex" and "high-stakes" coding tasks are broad territory, keeping it at 'mostly distinct; minor overlap risk' rather than a fully distinct niche.