The body is dense and purposeful with no padding or explanation of concepts Claude already knows; every section (Philosophy, Procedure, Validation, Constraints, Gotchas, Output Template) earns its place, matching the lean anchor 3 rather than the 'could be tightened' anchor 2.

It provides executable commands (e.g., './bin/ask skills audit ... --json --robot', 'rg -n "phase|gate|..."'), copy-paste-ready delegation templates with real file paths and test commands, and a complete YAML output template, matching the fully-executable anchor 3 rather than the pseudocode anchor 2.

The 7-step procedure has explicit validation checkpoints (step 5 run validation and route failures, step 7 ask before mutation) plus a 'Fail fast: stop at first failed gate' feedback loop and a Failure Mode section, matching the explicit-checkpoint anchor 3 rather than the 'checkpoints missing or implicit' anchor 2.

SKILL.md stays a concise overview with a clearly signaled, one-level-deep References section pointing to real bundle files (references/phase-gate-contract.md, contract.yaml, evals.yaml all verified present), with contracts/evals split out rather than inlined, matching the well-signaled one-level anchor 3 rather than the score-2 'not clearly signaled' anchor.

The description enumerates multiple distinct concrete actions ('check live state, confirm continuation authority, execute only the active he-work slice, verify gates, update Linear only with approval, and stop before unsafe staging or closure'), matching the 'lists multiple specific concrete actions' anchor rather than the partial-action anchor at 2.

It states what the skill does (the full action list) and explicitly when to use it via 'Use when a plan, issue, or PR needs continued phase-by-phase execution', satisfying the explicit-trigger anchor 3 rather than the score-2 case where 'when' is only implied.

Trigger terms like 'continue approved plan', 'run phases', 'recurring implementation', 'phase gate', and 'keep issue moving' give good natural-phrase coverage a user would actually say, though the leading 'he phase work'/'Harness Engineering' jargon keeps it from being unambiguously clean; net coverage lands at the anchor 3 example rather than the 2 'missing common variations' anchor.

The recurring phase-gated execution niche with Linear/staging gates is a distinct trigger context unlikely to fire for unrelated skills, matching the clear-niche anchor 3; it is not the score-2 'could still overlap' case because the approval-gated, phase-by-phase framing is specific.