Run a file-audited completion loop that requires two consecutive fresh-context subagents to independently try to disprove the same versioned, digest-checked task result. Use when the user invokes $adversarial-review, asks for two independent adversarial approvals, or requires a result to survive repeated attempts to find correctness, completeness, requirement, or verification gaps before completion. Do not trigger for an ordinary one-pass review, and never self-certify when fresh subagents are unavailable.
