The implicit Window style in Theme.xaml WAS being applied, but defensive
coding wins: when MainWindow.Background was unset, WPF's intermediate
composition surface for elements with Opacity<1 (the Image) blended
against whatever the parent presented. In some Windows render paths
that's effectively the system white. Setting Window.Background="Black"
AND Grid.Background="Black" pins the surface under the image to pure
black explicitly, no system theme involvement.
Also drop the previous "darken overlay" Rectangle — once the surface
under the image is genuinely black, the image at 0.25 opacity is
already where we want it, no second dimming layer needed.
Launcher subtitle: FontWeight Light → Bold so it competes equally with
PROSERVE in the Pirulen wordmark.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
j.foucher
dd4ee9bbaa