Multi-Provider Adversarial Review When to Use Per AI Review Routing Policy: - Two-provider (Codex): default for non-trivial plans and code - Three-provider (Codex + Gemini): architecture-heavy, security-affecting, cross-module, high-stakes, ambiguous requirements, or context-saturated Two Review Checkpoints The user expects adversarial review at BOTH stages — not just implementation: 1. Checkpoint 1 — Plan review : before any implementation begins 2. Checkpoint 2 — Implementation review : before closing the issue / merging the PR Do NOT skip the plan review. Do NOT defer all review to impleme…