Initial commit: SkyOS source code

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

themes/SkyOS/index.theme

@@ -0,0 +1,12 @@
+[Desktop Entry]
+Type=X-GNOME-Metatheme
+Name=SkyOS
+Comment=BeOS/SkyOS-inspired warm tan desktop theme
+Encoding=UTF-8
+
+[X-GNOME-Metatheme]
+GtkTheme=SkyOS
+MetacityTheme=SkyOS
+IconTheme=Adwaita
+CursorTheme=DMZ-White
+ButtonLayout=close:minimize,maximize