Identify handheld iOS device families

[toaster0123]

Summary

• Expose native mobile-device classification through the existing device bridge.
• Recognize phone and iPad idioms, excluding other families and iOS apps running on Mac.
• Marshal UIKit access to the main thread and document the matching Java/native artifact requirement.

Validation

• core-ios check passed.
• Rebuilt device and simulator XCFramework slices and verified the new JNI symbol in both.
• Native iPhone simulator probe passed: live phone classification, 14 injected idiom/Mac cases, and background-to-main-thread dispatch.

Direct master push was rejected by the repository pull-request rule.