What problem does it solve? Engineering plans often hide architecture flaws, missing edge cases, and weak test coverage that only surface after code is written. This Skill performs an engineering-manager-style review of a plan or design doc before implementation begins, walking through issues interactively with opinionated recommendations. ## Core Features & Use Cases - Scope Challenge (Step 0): Identifies existing code that already solves sub-problems, flags scope creep, and challenges plans touching 8+ files or 2+ new services. - Architecture & Data Flow Review: Evaluates diagrams, state machines, failure modes, and complexity using engineering leadership heuristics (boring-by-default, blast radius, reversibility). - Test Coverage Analysis: Requires a test diagram and checks whether the plan covers edge cases rather than only the happy path. - Use Case: Before starting a multi-file feature, run this review on your plan to catch an N+1 query risk or a missing rollback path while changes are still cheap. ## Quick Start Ask the assistant to run an engineering review on the current plan or design doc before writing any code.
