Bump iOS deployment target 17→26: the OS_dispatch_mach_msg
"_setContext: unrecognized selector" launch crash on the iPhone 17 Pro
was a libdispatch/concurrency-runtime mismatch between the iOS 17 target
and the iOS 26 device. App now launches and stays resident on device.
RoomIdentity: drop the iCloud ubiquityIdentityToken + NSKeyedArchiver
path (a second suspected crash vector) in favor of IOKit hardware UUID
on macOS and a Keychain-stored 8-hex UUID on iOS. SiwA/iCloud identity
returns at v0.6 once dev-program entitlements land.
Also add ios/.gitignore and untrack .build/ artifacts.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Patrick Ecord
b39fcc37e8
