react git:20260915.f17c505A

Immutable. This exact content is served forever at /api/v1/blob/284cdd0e2af66fc4.

---
description: React / TSX frontend standards (Frontier)
globs: **/*.tsx,**/*.jsx
alwaysApply: false
---

# React / TSX (Frontier)

Canonical: `.github/instructions/react.instructions.md` and
`.github/skills/languages/react/SKILL.md` -- read for full standards.

- Functional components with typed props; custom hooks prefixed `use`.
- useCallback/useMemo/React.memo where it matters; TanStack Query for server
  state.
- React Testing Library (test behavior); semantic HTML, alt text, keyboard nav.