What problem does it solve? Engineering plans often hide architecture flaws, missing edge cases, and weak test coverage that only surface after coding begins. This Skill performs an engineering-manager-style review of your plan before implementation, walking through issues interactively with opinionated recommendations so problems are caught while they are still cheap to fix. ## Core Features & Use Cases - Architecture and Data Flow Review: Examines the plan's architecture, data flow, and diagrams, flagging structural weaknesses with concrete recommendations. - Edge Case and Test Coverage Audit: Checks performance implications, edge cases, and test coverage gaps before any code is written. - Interactive Decision Walkthrough: Uses structured AskUserQuestion decision briefs with recommendations, pros/cons, and completeness scores to lock in the plan. - Use Case: You have a design doc for a new feature and are about to start coding. Invoke this Skill to get an engineering review that catches a missing index, an unhandled race condition, and untested error paths before implementation begins. ## Quick Start Ask the assistant to run an engineering review of your implementation plan to validate the architecture, edge cases, and test coverage before you start coding.