In convergence mode the app drawer appears as a sized popup
anchored above the dock near the Overview button, instead of
taking over the full screen.
- Popup has rounded background, shadow, and clipped content
- Desktop stays visible behind the popup (no scale/fade/blur)
- Click outside the popup dismisses it
- Wallpaper scrim suppressed in convergence mode
- Mobile behavior is unchanged
In convergence mode the app drawer stays open after launching an
application. Connect to WindowUtil.onWindowCreated and close the
drawer automatically so the user lands on the new window.
The home button was a no-op in convergence mode when windows were
visible. Call WindowUtil.minimizeAll() so the home button acts as
show-desktop, preserving the mobile path that also resets homescreen
state before minimizing.
