[BUG] Desktop app's iOS Simulator breaks under Xcode 27 (Device Hub)

Preflight Checklist

• [x] I have searched existing issues and this hasn't been reported yet
• [x] This is a single bug report (please file separate reports for different bugs)
• [x] I am using the latest version of Claude Code

What's Wrong?

Description

The Claude Code desktop app ships an iOS Simulator. It fails whenever xcode-select points at Xcode 27.

Root cause

Xcode 27 removed Simulator.app in favour of the new Device Hub, and moved SimulatorKit.framework from Contents/Developer/Library/PrivateFrameworks/ to Contents/SharedFrameworks/. The bundled tool still hardcodes the old path.

Workaround and its limits

Pointing xcode-select back at a pre-Xcode-27 Xcode.app fixes attach/screenshot/tap, but then the tool's build action fails on any project requiring the Xcode 27 SDK. This can be worked around by using Xcode MCP instead.

So there is currently no single xcode-select configuration where this tool can both drive the simulator and build an Xcode-27-dependent project.

Environment

Claude Code desktop app (macOS) (Version Claude 1.24012.1 (0adcae))
Xcode 27.0 beta 4 and Xcode 26.

What Should Happen?

Expected

The bundled tool should resolve SimulatorKit.framework (and other toolchain paths) dynamically based on the active xcode-select/Xcode version, including the new Device Hub-era Contents/SharedFrameworks/ location for Xcode 27+.

Error Messages/Logs

Error Domain=com.facebook.FBControlCore Code=0 "Attempting to load a file at path '/Applications/Xcode 27.app/Contents/Developer/Library/PrivateFrameworks/SimulatorKit.framework', but it does not exist"

Steps to Reproduce

Run
xcode-select -s /Applications/Xcode 27.app/Contents/Developer

And try to use the iOS simulator feature on Claude Code

Claude Model

Sonnet (default)

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

Claude 1.24012.1 (0adcae) 2026-07-21T20:59:53.000Z

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Other

Additional Information

_No response_