[Lower priority] Orientation and rotation control (landscape layouts)

[thymikee]

Priority: Lower / backlog.

No way to set or rotate device orientation (portrait/landscape). Testing landscape layouts or rotation-dependent UI requires this. iOS: simctl orientation; Android: adb shell settings put user_rotation or content API. Add a command (e.g. orientation portrait|landscape or rotate) that sets the current orientation.

Acceptance criteria (high level):

• Command to set orientation to portrait or landscape (and optionally specific rotation angles)
• Supported on iOS simulator and Android emulator/device
• Docs updated