git:20260707.bb3f39d to git:20260710.7fdf9e2

2 added, 2 removed. Audit A to A.

---

name: frontend-rn-expo

description: |

- OPTIONAL, stack-specific: React Native + Expo (prebuild) details. Used only in mobile RN

- projects; generic principles live in the `frontend` skill. Disabled in web/desktop projects.

+ OPTIONAL, stack-specific: React Native + Expo (prebuild). Mobile RN projects only; the generic principles

+ live in the `frontend` skill.

Trigger phrases: "expo", "react native", "native bridge", "expo router", "rn screen", "prebuild"

---

# React Native + Expo (stack-specific layer)

For generic frontend discipline, applies the `frontend` skill; this file only covers the RN+Expo-specific additions.

Not used in web/desktop projects (delete it if needed).

## RN + Expo specifics

- **Navigation:** expo-router (file-based) or react-navigation — follow whichever the project uses.

- **Lists:** `FlatList`/`FlashList` + `keyExtractor`; virtualization for heavy lists.

- **Native bridge:** only when needed; the JS side is **typed**, error paths are explicit (what the UI does if native rejects).

Via Expo prebuild / config plugin; mind the platform difference (iOS/Android).

- **Render by capability:** do **not** promise in the UI a capability the device lacks; show it conditionally.

- **Assets:** image size/resolution, `expo-image` cache, splash/icon prebuild compatibility.

## DoD (in addition to the generic `frontend` DoD)

- Works across the target iOS/Android version matrix; native bridge error paths are tested.