Conciseness

The body is ~860 lines with several noticeably padded sections: long blockquote design-rationale digressions (e.g. 'Without that exclusion the Production → Polish gate had zero required artifacts...', 'A setting that works only when a rule is disregarded is not wired') and historical justifications ('until now the verdict vocabulary had nowhere to put one'). None of it explains concepts Claude already knows (it is all project-specific policy), so it is above a 1, but the repeated why-annotations are verbosity the runtime context does not need and belong in an authoring-notes reference.

Actionability

Fully executable throughout: exact commands ('bash .claude/scripts/artifact-check.sh --phase [source-phase]', 'mkdir -p production && printf ...'), ready-made AskUserQuestion prompts with option lists, concrete YAML templates for every project.yaml creation case, director gate IDs, and complete output templates. The specific examples cover the common cases (all three yaml-existence branches, per-tier panel tables).

Workflow Clarity

A clearly numbered sequence (Parse Arguments → Gate Definitions → Run Checks → Collaborative Assessment → Director Panel → Verdict → Stage Update → Next Steps) with exceptional validation checkpoints: the dedicated Chain-of-Verification section (5a) with explicit revise rules, the mandatory dual-write verification (6.3) with stop-on-divergence, confirm-before-write on stage changes, and precedence-ordered verdict rules ('FAIL, then CONCERNS, then NOT ASSESSED, then PASS') that remove inference. Feedback loops for error recovery are explicit throughout.

Progressive Disclosure

The six per-gate checklists are correctly split into real reference files (all six verified present in references/) with a clear table mapping each transition to its file and an explicit 'read only the row for the target phase' rule — a textbook one-level-deep split. It is not a 5 because the SKILL.md body itself still inlines large blocks that belong in references (the Section 2b tier-policy rationale and the 25-item Section 8 follow-up list), leaving the overview heavier than it needs to be.

Specificity

The description names the domain ("advance between development phases") and concrete outputs ("PASS/CONCERNS/NOT ASSESSED/FAIL with blockers and required artifacts"), which is 1-2 concrete actions. It stops short of naming the checks performed (artifact checks, quality checks, director review), so it does not reach the 'several specific actions' of a 4 — and it is well above the vague 'names domain only' of a 2.

Completeness

The 'what' is clear (a verdict with blockers and required artifacts) but the 'when' is present only as a single quoted question with no 'Use when...' clause or equivalent explicit trigger guidance, which caps completeness at 3 per the judging guidelines. It is not a 2 because the quoted question does weakly establish the trigger, and not a 4 because the trigger condition is never stated as explicit guidance.

Trigger Term Quality

Good natural-keyword coverage: "advance between development phases", "production", and the directly quoted user question "'Can we move to production?'" is exactly what a user would say. A few natural variants are missing ("phase gate", "stage", "ready for"), keeping it below the comprehensive synonym/extension coverage of a 5, but it is clearly above the 'some relevant keywords, missing common variations' of a 3.

Distinctiveness Conflict Risk

The verdict vocabulary (PASS/CONCERNS/NOT ASSESSED/FAIL) and phase-advance framing form a fairly distinct niche with the quoted trigger. Minor overlap risk remains: "Can we move to production?" could naturally match a software-deployment or release skill, so it is below the 'clear niche, minimal conflict' of a 5 but above the 'could still overlap with similar skills' of a 3.