What problem does it solve? Coordinating multiple independent code reviewers (local Codex, Claude Code, and GitHub Codex) over a frozen commit range is error-prone: scopes drift, evidence gets mixed between lanes, and merge decisions get made on stale heads. This Skill defines a strict orchestration contract so every named review shape runs with frozen Git ranges, isolated workspaces, and auditable evidence before a PR is declared merge-ready. ## Core Features & Use Cases - Named Review Shapes: Runs single (one fresh local Codex lane), double (adds an actual Claude Code lane), or triple (adds current-head GitHub Codex evidence) reviews over a frozen base_sha..head_sha range. - Isolated Lane Execution: Each local lane gets its own clean, detached, read-only Git workspace with pinned toolchain and validated Claude runtime provenance, stream-schema validation, and sandboxed launch profiles. - PR Readiness and Merge Gating: Drives the fix-and-rerun loop across CI, review conversations, and merge policy, binding direct merges and merge-queue enrollment to the exact reviewed head SHA. - Use Case: Before merging a critical pull request, request a triple review to get independent findings from a fresh Codex reviewer, a sandboxed Claude Code reviewer, and GitHub Codex, then loop on fixes until every lane and readiness gate passes on the final head. ## Quick Start Ask the assistant to run a triple review of the current pull request and report whether it is merge-ready.