Full-screen modals (create-workspace) covered the app titlebar, so the
Back button landed on top of the macOS traffic lights — where native
hit-test always wins and the button couldn't be clicked. The modal
also swallowed the window's drag region.
Introduce a desktop IPC channel window:setImmersive that calls
BrowserWindow.setWindowButtonVisibility, exposed through the existing
desktopAPI preload bridge. A small useImmersiveMode() hook in
@multica/views/platform toggles it for the component's lifetime and
is a no-op on web / non-macOS.
CreateWorkspaceModal now:
- calls useImmersiveMode() so traffic lights disappear while it's open
- adds a transparent top h-10 drag strip to restore window dragging
- moves the Back button from top-6 left-6 to top-12 left-12 with an
explicit no-drag region so clicks always reach it
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
