Updated the Win32 WM_COPYDATA handler to recognize that toggle command and perform minimize/restore behavior:
visible window → iconify
hidden window → show/present
while preserving existing behavior for normal remote commands.
Integrated STS capability handling and connection lifecycle hooks (ignore CAP DEL, trigger upgrades, reschedule on disconnect, new server fields).
Initialized and cleaned up STS state during startup/shutdown to persist policies across sessions.
