review-pr-ultra

Heavyweight multi-agent adversarial PR review. Spawns 5 parallel specialist agents (correctness, security, performance, maintainability, completeness) then a verifier agent that challenges every finding. Only verified issues survive. Use for high-risk changes, security-sensitive areas, large diffs, or when the user asks for a deep/thorough/ultra review. For routine reviews, prefer /review-pr — it's cheaper and…