Review a change across five axes — correctness, readability, architecture, security, performance — and write a durable `review.md` to `.ai/verify/`: an overall verdict plus findings, each a real `file:line`, a severity (critical / high / medium / low), and a concrete fix. Reads the project's own conventions instead of imposing a generic standard. Read-only. Use when a change is ready for review or about to merge, or when someone says "review this change", "review my PR", "code review".