What problem does it solve? Solo builders often jump from plan to code without an engineering review, so architecture flaws, missing edge cases, and untested codepaths only surface after implementation. This Skill runs an interactive engineering-manager-style review of a plan or design doc, catching problems while they are still cheap to fix. ## Core Features & Use Cases - Scope Challenge (Step 0): Checks whether existing code already solves sub-problems, flags scope creep, and challenges plans touching 8+ files or 2+ new services. - Section-by-Section Review: Walks through Architecture, Code Quality, Tests, and Performance interactively, raising one issue per AskUserQuestion with an opinionated recommendation. - Test Coverage Tracing: Detects the project's test framework, traces every planned codepath, and produces a coverage diagram so the plan includes full test coverage from the start. - Use Case: You have a design doc for a new billing feature and are about to start coding. Run this Skill to lock the architecture, expose a missing webhook retry edge case, and add tests for every branch before writing a line of code. ## Quick Start Ask the AI to run an engineering review of the current plan or design doc on this branch before starting implementation.
