iOS Simulator panel stuck in crash-restart loop, survives full OS reboot

The iOS Simulator live-view panel (attach/screenshot actions) fails on every call with:

Claude Code iOS Simulator is restarting after a crash. Try again in 1s. The simulator restarts itself; retry this call.

attach itself reports success each time (returns a panel-opened message with correct coordinate space), but every subsequent screenshot call fails with the same crash-loop error.

Reproduction / troubleshooting already ruled out:

• Not caused by multiple booted simulators — reproduces with exactly one cleanly booted device.
• Not caused by Simulator.app (the GUI) not running — reproduces even after explicitly launching it (open -a Simulator) and confirming via ps.
• Not caused by stale process/session state — reproduces identically immediately after a full macOS restart and a full Claude app restart.
• CLI-based simulator tooling (xcodebuild build/test, xcrun simctl) is unaffected throughout — only this panel's live-view component is stuck.

Environment: macOS, Xcode with iOS 27.0 simulator runtime, iPhone 17 Pro simulator device.

Impact: Can't get a live screenshot or interactive view of the app via this tool; falls back to CLI build/test only.