Fable 5.1 and bug fixes

✨ New

Claude subscription: Better model discovery for Claude Subscription. Also this update unblocks Fable 5.1
App windows: Reduced the work done to track draggable window areas, so apps stay more responsive while you drag and resize them.

Agent: Fixed agent runs that could hang indefinitely after the first message. A stalled run now ends with an error you can retry instead of spinning forever.
Projects: Fixed Glaze losing track of a project after it had been renamed.
New projects: Closing the agent while your first project is still being created now cancels the work cleanly instead of leaving background requests and half-created files behind.
Agent tasks: Fixed a turn that could stay unfinished when the agent was still running a task in the foreground.