Expo SDK Packages

Installing with `npx expo install`, versioning, and module lifecycle.

Permissions, channels, foreground handling, and push token registration.

Foreground/background location, geofencing, and App Store disclosure strings.

Capture flows, permissions, and memory-safe previews.

Sandboxed paths, downloads, and migration from legacy FS API.

Secrets, hashing, and random bytes on device.

Permission rationale copy and graceful denial UX.