I'm unable to use the Claude Agent in Xcode 26 (stable release) running on macOS 27 beta 5. Steps to reproduce: Open Xcode 26 Settings > Intelligence Select Claude Agent Expected: The Account section loads and allows me to sign in / manage my Claude account. Actual: The Account row shows a loading spinner indefinitely and never resolves, so I can't sign in or use the Claude Agent at all. Environment: Xcode 26 (stable), macOS 27 beta 5. Is this a known incompatibility with macOS 27 beta 5? Is there a workaround (e.g. clearing a cache or re-adding the account) to get the Claude Agent account section to load?