Agent Skills: background-reviewer

Run bounded parallel code reviews with independent persona reviewers, verify findings adversarially, merge and prioritize by root cause, and optionally repeat a review-fix-verify cycle. Use only when the user explicitly requests a background, parallel, multi-agent, persona, multi-LLM, or iterative review such as "bg review", "멀티 리뷰", "페르소나 리뷰", "리뷰 루프", or "keep reviewing". Do not trigger for an ordinary code review.