Migration: Remote Control flags — If you use --spawn-worktree-sessions or --spawn-same-dir-sessions, these have been replaced by --spawn=worktree and --spawn=same-dir respectively. The old flags will produce an error directing you to the new syntax.

Migration: Hooks format — The hooks matcher format has changed from an object {"tools": ["BashTool"]} to a string "Bash" or pipe-separated list "Edit|Write". Existing configurations should still work but the error tip now reflects the new format.

Bundle size reduction — The RxJS library (Observable, Subscriber, Subscription, and many related classes) has been removed from the bundle, reducing the overall package size. The tree-sitter WASM files and several other large dependencies (lodash templating, spawn-rx internals) have also been cleaned up.