Review code changes for bugs, security vulnerabilities, performance issues, and maintainability. Use when asked to review code, a PR, a diff, or recent changes.
Systematically diagnose and fix bugs, unexpected behavior, or failing tests. Use when something is broken and the cause is not immediately obvious.
Explore a codebase and produce a detailed implementation plan before writing any code. Use when asked to plan a feature, think through an approach, or figure out how to implement something.
Safely restructure code to improve clarity, reduce duplication, or simplify design without changing observable behavior. Use when asked to clean up, simplify, or restructure code.
Write a technical specification for a feature, API, or system component. Use when asked to spec out, design, or document a feature before it is built.
Write tests for existing code or new features. Use when asked to add tests, improve test coverage, or write tests for a specific function or module.