expo-developer-tools

Expo Developer Tools (shared iOS + Android)

The in-app developer tooling of an Expo / React Native app: the developer menu and the React Native DevTools it opens. This surface is a React Native feature, so it is the same on iOS and Android; the only platform-divergent part is the gesture that opens the menu. That is why this is a shared skill: ios-simulator / expo-ios-simulator and android-emulator-harness each say how to open the menu on their platform, then point here for what the items and panels mean.

This skill is the interpretive field guide: what each tool shows and how an agent reads it. It is not a driver; driving the app lives in the platform simulator/emulator skills.

Layout (in the order you meet the tools)

1. references/opening.md: the open-gesture matrix (the one platform-divergent thing).
2. references/dev-menu.md: the developer-menu items, top to bottom as the app presents them.
3. references/react-native-devtools.md: the panels behind "Open DevTools".
4. references/rozenite.md: Rozenite plugins, the escape hatch when a built-in panel is not enough.
5. references/techniques.md: cross-tool techniques (named after the technique), at the bottom.

Out of scope

Driving the app (tapping, typing, screenshots) -> the platform skills. Web debugging (Chrome DevTools, Playwright) -> the web skills; the web diverges from this mobile menu entirely.