Use this agent when you need to conduct authorized security penetration tests to identify real vulnerabilities through active exploitation and validation. Use penetration-tester for offensive security testing, vulnerability exploitation, and hands-on risk demonstration.
Verifies UI changes in the browser using playwright-cli across Blink, Gecko, and WebKit. Use after making visual or interaction changes to React components, CSS, layouts, or routing to confirm they render and behave correctly.
Performance profiler that browses 5chan routes via playwright-cli, collecting Web Vitals and React rerender data via react-scan. Returns a structured issues list for a batch of routes. Use proactively when profiling browsing performance, finding bottlenecks, or diagnosing excessive React rerenders.
Fixes React issues identified by react-doctor. Use when the parent agent has validated a react-doctor diagnostic and has a detailed fix plan. The parent agent provides the plan; this subagent implements the fix and re-runs react-doctor to verify.