Conciseness

The body is lean bullet-style guidance with no explanations of concepts Claude already knows. Minor trimming opportunities remain: an 11-item Table of Contents on a 94-line document, an Overview that restates the description, and a Philosophy section that overlaps Constraints and Safety — matching 'efficient; minor instances that could be trimmed' rather than the every-token-earns-its-place level.

Actionability

Guidance is mostly executable: exact commands ('bash scripts/verify-work.sh --fast', 'bash scripts/codex-preflight.sh ...') and exact patterns to scan for ('source .../scripts/codex-preflight.sh', '. .../scripts/codex-preflight.sh'). Minor gaps: the drift scan and the 'machine-readable summary' deliverable are described but not given as runnable commands or a concrete output example, so it stops short of fully copy-paste-ready coverage.

Workflow Clarity

A clear 6-step sequence is paired with an explicit fail-fast validation checkpoint ('stop at the first failed gate and fix it before continuing', 'bash scripts/verify-work.sh --fast') and a Failure mode section that defines the error-recovery loop (treat docs as unverified, fix or revert the contract claim before handoff). This matches the anchor with explicit validation steps and feedback loops.

Progressive Disclosure

SKILL.md is a compact overview and all detail lives in three real one-level-deep bundle files (references/alignment-checklist.md, references/contract.yaml, references/evals.yaml — verified present, none nesting further), each signaled with an explicit 'Read when' condition. The one cross-skill routing link (../ci-check-name-parity/SKILL.md) sits outside this bundle but is clearly labeled as routing for a specific case.

Specificity

The description names the domain ('validation and preflight guidance', 'live command contract') and two concrete actions ('Validate and align'), matching the anchor for domain plus 1-2 actions without comprehensive coverage. It does not list several distinct actions (e.g., detecting drift, reconciling conflicting examples), so the level-4 anchor does not fit.

Completeness

It explicitly answers both parts: what it does ('Validate and align the repo's validation and preflight guidance with the live command contract') and when to use it ('Use this skill when AGENTS, README, Makefile, package scripts, validators, or preflight docs change') with concrete trigger phrases. Voice is third person, so no penalty applies.

Trigger Term Quality

Natural trigger terms are well covered: 'AGENTS, README, Makefile, package scripts, validators, or preflight docs change' matches phrases a user would say when editing those files. A few natural terms are missing (e.g., 'quality gates', 'verify-work', specific script names), so it falls short of comprehensive synonym/extension coverage.

Distinctiveness Conflict Risk

It occupies a clear niche — reconciling repo validation/preflight documentation with the live command contract — with distinct, file-based triggers (AGENTS, README, Makefile, package scripts), giving minimal overlap risk with unrelated skills. It is more narrowly pinned than the level-4 anchor's 'minor overlap risk with closely related skills'.