steamify-app.tar.gz (ui/, steamify.sh, lib/, icon) and its launcher
steamify-app.sh in every release: it installs to ~/.local/share/steamify/app,
installs PySide6 if needed, adds a launcher entry and starts the app.
STEAMIFY_BRANCH=<branch> runs a branch before it's released.
bios_enable split into bios_prepare (download, checksum, fwupd check) and
bios_flash; the terminal flow is unchanged. The app: check, warning 1,
warning 2 (type UPDATE, or hold A/OK for 5 seconds), flash, restart.
ui/steamify-ui (PySide6 + QML): menu, review, password, applying and done
screens from the design, scaled to the window. Controller via evdev,
keyboard, TV remote (cecd). steamify.sh --backend status|apply (lib/backend.sh)
drives the same components; sudo asks through an askpass helper.