Copyright: readable pill with proper "© 2026 ASTERION VR — All rights reserved"

The previous copyright was a faded TextBlock at Opacity 0.7 with the
secondary grey color, sitting directly on top of the variable-
luminance background image. Hard to read on the bright spots of the
ASTERION VR engraving.

Wrap it in a Border with #A0000000 background (~63% opacity black)
and CornerRadius=10 — same pill style as the license badge — so the
text reads cleanly regardless of what's behind. Foreground is now
plain white instead of the secondary grey.

Text changed from the terse "© ASTERION VR" to the proper convention:
- UI: "© 2026 ASTERION VR — Tous droits réservés" (matches the
  French-language UI in MainWindow + Settings)
- Assembly metadata (Properties → Détails on the .exe): English form
  "© 2026 ASTERION VR — All rights reserved"

Same change applied to PSLauncher.Updater.csproj.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/PSLauncher.App/Views/SettingsDialog.xaml

@@ -235,7 +235,7 @@
                             <Run Text="Version : " />
                             <Run Text="{Binding LauncherVersion, Mode=OneWay}" FontWeight="SemiBold" />
                         </TextBlock>
-                        <TextBlock Text="© ASTERION VR — Tous droits réservés"
+                        <TextBlock Text="© 2026 ASTERION VR — Tous droits réservés"
                                    FontSize="12"
                                    Foreground="{StaticResource Brush.Text.Secondary}"
                                    Margin="0,4,0,0" />