deep-review

Two-phase convergence harness for high-assurance review of a changeset (PR or working-tree diff). Phase 1 loops iterative multi-reviewer fix->re-review until a round finds zero actionable issues; Phase 2 runs a Gemini-primary adversarial cross-examination (Gemini finds -> Claude judges -> Gemini counters), fixing every confirmed finding. Soft-depends on pr-review-toolkit and adversarial-review plugins with documented fallbacks.