The body is lean and assumes Claude's competence — no re-explanation of what a CVE or package manager is; every section (Hard rules, Workflow, Check menu, Report template, Verdict wording) earns its place with concrete content.

Provides copy-paste-ready bash commands in the check menu, a complete fill-in-the-blank report template, and concrete verdict definitions — fully executable guidance rather than abstract direction.

A clear numbered 5-step workflow (identify scope → run checks in parallel → build table → write report → tell user) with the verdict-logic section acting as the determination checkpoint; read-only by design so no destructive validate-fix-retry loop is required.

No bundle files exist and none are needed; the skill is a single cohesive unit well-organized into clearly headed sections with no nested references, so splitting into separate files would only reduce actionability.

Lists multiple concrete actions — 'Read-only exposure audit ... for a CVE, breach, malicious package, or other security advisory, then write a structured report' — rather than vague language, matching the score-3 anchor.

Explicitly answers both 'what' (read-only exposure audit plus writing a structured report) and 'when' via a clear 'Use when...' clause with several example triggers, satisfying the score-3 anchor.

Embeds natural phrasings a user would actually say — 'scan my system for X', 'are we affected by Y', 'check if I'm vulnerable to Z', 'breach/CVE/malware/supply-chain advisory' — giving strong coverage of likely trigger terms.

Occupies a clear niche (security exposure audit scoped to this MacBook, output to a fixed ~/Documents/security-reports/ directory) with distinct triggers unlikely to collide with other skills.