noVNC scaled correctly but the emulator's Qt window opened small (~411x914)
and floated inside the 1080x2280 Xvfb, so the user saw a tiny phone in a sea
of black. v8 bakes a background fitter (wmctrl+xdotool) that, after boot,
auto-OKs the one-shot nested-virtualization warning dialog, fills the phone
window to the display, and parks the control strip off the right edge —
re-running to catch window/dialog timing then maintaining every 30s. Applied
live to the running pod already; this makes it survive the next wake.