Replace manual titlebar/drag handler with ModalShell, move action buttons to footer, convert StaticResource token attrs to DynamicResource, replace OrangeRed with BloodBrush, and use MonoFont DynamicResource.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Opens a modal when PlanningMergeConflict fires, listing conflicted files
with options to open in VS Code, continue, or abort the merge.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>