What problem does it solve? Engineering plans often contain hidden architecture flaws, missing test coverage, and performance risks that only surface during implementation. This Skill locks in an execution plan by walking through issues interactively before coding begins, catching design problems early. ## Core Features & Use Cases - Four-Section Review: Evaluates architecture, code quality, test coverage, and performance, raising each finding as an individual decision with recommendations and confidence scores. - Test Coverage Audit: Traces every planned codepath and user flow, produces an ASCII coverage diagram, and adds missing unit, E2E, and regression tests to the plan. - Outside Voice Challenge: Runs an independent second opinion from another AI model (Codex CLI or a Claude subagent) and presents cross-model disagreements for user decision. - Use Case: Before implementing a new billing service, run an engineering review on the design doc to catch a missing idempotency plan, untested error paths, and an N+1 query risk, then lock in the corrected plan. ## Quick Start Ask the assistant to run an engineering review of the current plan or design document before starting implementation.
