The shape-tool double-click, Cmd+W handling and their tests move to the split header, menus/invoke
and engine test modules (#2491); the docking check in the Cmd+W test uses the craft_ui dock API.
Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01RDvxCS8xcR28VArjzn1x7U