Add a preview hero to the App name picker header: the app's launcher mark over
the current name on a tonal surface card, the explanatory hint below it, then
generous space before the choices. Gives the picker the visual "display" the
inline hint lacked and separates the text from the options.
Follows the material-3 guidance — tonal surfaceContainerHigh card (no shadow),
28dp corner, 8dp-grid spacing, onSurface/onSurfaceVariant role pairing — and
reuses the onboarding BrandHero's squircle reconstruction of the adaptive icon
so it renders identically everywhere.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Jean-Luc Makiola
3ffe76412e