What problem does it solve? Engineering plans often ship with hidden architecture flaws, missing test coverage, and performance risks that only surface during implementation. This Skill locks in an execution plan by walking through every issue interactively before coding starts, catching problems while they are still cheap to fix. ## Core Features & Use Cases - Four-section review: Evaluates architecture, code quality, test coverage, and performance, with confidence-scored findings and a pre-emit verification gate that requires quoting the motivating code line. - Interactive decision briefs: Each non-trivial finding is presented one at a time via AskUserQuestion with recommendations, completeness scores, and explicit STOP points before the plan is edited. - Outside voice challenge: Runs an independent second opinion from Codex CLI (or a Claude subagent fallback) and surfaces cross-model disagreements for the user to decide. - Use Case: Before implementing a new billing service, run this Skill on the plan document to get an ASCII test-coverage diagram, a written test plan artifact for QA, and an outside-model critique of the architecture. ## Quick Start Ask the assistant to run an engineering review of your implementation plan or design doc before you start coding.
