The main screen, the loading overlay, the HUD line, the drawer and the three
dialogs are composables now, driven by state the activities own. The session's
SurfaceView and the on-screen pad stay Views underneath a single Compose layer,
which is what they are in any Compose app: a compositor surface and a canvas,
not menus. The XML layouts are gone; the activities extend ComponentActivity
and Back goes through its dispatcher.
Lifts Bannerlator's Linux/gamescope runtime out into an app of its own: the
Wayland compositor, the proot session, the runtime installer, the fake-evdev
controller path and the PulseAudio server, with none of the Wine, container or
store machinery around them.
One activity installs the runtime from the same winlator-contents catalog and a
second one runs the session: compositor on a SurfaceView, gamescope and Valve's
native arm64 client under proot, a physical pad republished into the fake-input
rings, and the session's milestones on screen until the first frame arrives.
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