magpie-newcomer-issue-explainer

Given an open good-first-issue on the configured <upstream> repo, explain it in beginner terms and sketch a concrete approach: which files to read first, what "done" looks like, and where to ask follow-up questions — without writing any code or fix. First runs an issue assessment to confirm the issue is open, non-security, and scope-clear. Then drafts the explanation for maintainer review. Read-only; nothing is…