We need to produce a 2-3 sentence plain-text summary, objective, factual, no marketing, no superlatives, no calls to action, natural prose, no bullet points, no headings, no markdown. At most 60 words. Must be only the summary text, no quotes. So we need to write something like: "This skill provides instructions for configuring the GitHub CLI (gh) to authenticate with GitHub, troubleshooting common authentication errors, and verifying the setup.