iOS touch and button input has no effect on Xcode 27 simulators (with #87 applied) #90

Environment

• macOS 26.6 (Darwin 25.6), Apple Silicon
• Xcode 27.1 (/Applications/Xcode-rc.app, selected with xcode-select) and Xcode 27.0 installed
• iPhone 17 Pro simulator, iOS 27.0
• SimDeck 0.2.0 (simdeck-v0.2.0) with fix: load SimulatorKit from SharedFrameworks on Xcode 27 #87 cherry-picked, built locally with npm run build:cli

What happens

With #87 applied, SimulatorKit loads from Contents/SharedFrameworks and the
browser viewer streams the simulator again.

Input still does nothing:

• simdeck tap --device <udid> 201 303 returns {"action":"tap","ok":true}, but the app doesn't receive the touch.
• simdeck tap --label … behaves the same way.
• simdeck home returns ok, but SpringBoard doesn't appear.

Holding the viewer open in a browser while tapping makes no difference.
describe --source nativescript and native-ax keep working.

No errors appear in the service output or in the unified log for the simdeck
process.

Notes

SimulatorKit in Xcode 27 still exports the IndigoHIDMessageFor* functions
SimDeck resolves, including ForButton, ForMouseNSEvent, ForHIDArbitrary
and ForKeyboardNSEvent. It also exports SimDeviceLegacyHIDClient.send(message:…).

So the symbols resolve, but the messages are either not delivered or not
accepted. That suggests a changed IndigoHIDMessageStruct layout, or a change
in how the HID client has to be created on Xcode 27.

Also seen

simdeck service stop returned without stopping a running 0.2.0 service; the
old process kept serving on :4310 until it was killed.