supabase-studio-multi-head

Write and run Playwright E2E tests for Supabase Studio. Use when asked to run e2e tests, write new E2E tests, or debug flaky tests. Covers running commands, avoiding race conditions, waiting strategies, selectors, helper functions, and CI vs local differences.

Design system UI patterns for Supabase Studio. Use when building or updating pages, forms, tables, charts, empty states, navigation, cards, alerts, or side panels (sheets). Covers layout selection, component choice, and placement conventions.

useStaticEffectEvent hook in Supabase Studio — a userland polyfill for React's useEffectEvent. Use when you need to read latest state/props inside a useEffect without re-triggering it, or when stale closures in Effects are causing bugs.

React composition patterns that scale. Use when refactoring components with boolean prop proliferation, building flexible component libraries, or designing reusable APIs. Triggers on tasks involving compound components, render props, context providers, or component architecture. Includes React 19 API changes.