* Add last-surface close regression tests
* Keep workspaces open when closing last surface
* Add Cmd+W last-surface close setting
* Share Cmd+W surface-close path
* Set cmux TestAction to Debug for UI tests
* Broaden XCTest detection for debug launch gate
* Fix AutomationSocketUITests launch hang in CI
* Stabilize CI Swift package resolution for test jobs
* Stabilize Xcode Cloud UI test focus and socket handling
* Add Xcode Cloud pre-xcodebuild submodule bootstrap
* Harden Xcode Cloud bonsplit bootstrap fallback