gaia-react-perf

Diagnose React render performance by driving a micro-interaction, capturing real renders, and surfacing memo-defeating reference instability with a recommended structural fix. Measure-only: it emits a diagnosis, it does not auto-fix. Trigger on /gaia-react-perf or natural-language asks like "profile renders", "measure renders", "why is X re-rendering", or "diagnose render performance". Do NOT trigger on vague "feels…