Plan Review Skill

Purpose

Execute a structured pre-implementation audit of a technical plan, proposal, or design document. The goal is to surface risks, bad assumptions, missing pieces, and scope problems before any code is written — when course corrections are cheapest.

This skill is read-only. It never modifies code. It produces a severity-tagged review document with a final ship/rethink/reject verdict.

Step 0 — Mode Selection

Ask the user a single question via AskUserQuestion:

Which review lens? (1) Product — scope, user impact, business alignment. (2) Engineering — architecture, failure modes, test strategy, performance. (3) Combined (default) — both lenses integrated.