Multi-Model Review

Two independent review lanes run in parallel, then every merged finding is adversarially verified against the actual code. Replaces the retired multi-model-review workflow: per MODELS.md there is no Claude shim - the main loop (Root) runs the codex lane itself via direct background Bash.

Inputs: repo (absolute path, required), base (default main), focus (default: correctness, security, edge cases, API contracts, maintainability).

Shared review contract (put in BOTH lane prompts):

Repo: <repo>. Review the diff git diff <base>...HEAD; if that diff is empty, review staged+unstaged changes instead. Focus: <focus>. You are READ-ONLY: do not edit any file. Read the changed files fully - not just the diff hunks. Report findings with file:line, why each matters, and the precise fix. If the change is clean, use verdict "ship" with zero findings - do not invent issues.