Agent Skills: athena-pr-reviewer-workflow

PROACTIVELY USED when reviewing a PR, branch, or Jira story. Runs a multi-reviewer code review in a background workflow (7 parallel Opus specialists → Sonnet batched verifiers → Sonnet synthesis), keeping reviewer agents out of main-thread context and returning a synthesized themed report. Then adapts to PR ownership — a fix/explain walkthrough for your own PR, or a pass/request-changes verdict plus an offer to post the findings as PR comments for someone else's. Triggers on "review PR X", "review this branch", "review CSD-123", "workflow review", "background review", or "/athena-workflow".