Reshape the convergence quick settings into a compact
promoted grid and add Clipboard, Disks & Devices, and a
drawer-hosted System Tray popup.
Retry applet popups when their full representation becomes
ready so the desktop utilities open reliably.
Long-pressing a mapped quick-settings tile in convergence
mode opens a floating popup with the Plasma applet UI
instead of launching System Settings. Unmapped tiles still
open Settings.
AppletHost creates a standalone Corona to host applets
outside the shell containment tree.
