Write a Code Review Checklist for Pull Requests

Create a practical code review checklist for this stack and team:

Language / framework: [STACK]
Repo type: [SERVICE, LIBRARY, MONOREPO APP]
Team size: [SIZE]
Risk level of changes: [LOW / MEDIUM / HIGH]
Definition of done: [TEAM DOD]
Common failure modes in this codebase: [BUGS OR INCIDENTS]

Requirements:
1. Split the checklist into correctness, readability, tests, security, performance, and operability.
2. Include reviewer prompts (what to look for) and author prep items (what to include in the PR).
3. Call out must-block issues vs nice-to-have nits.
4. Keep it usable in under 10 minutes for a typical PR.
5. Avoid generic advice. Tie items to the stated stack and failure modes.

Deliverables:
1. A PR author pre-submit checklist.
2. A reviewer checklist with severity tags (block / ask / nit).
3. A short PR description template (summary, risk, test plan, rollback).