Shared character defaults, fixed paths and names, one global font

src/ui.h

@@ -52,7 +52,7 @@ struct Command
 
 using Commands = std::vector<Command>;
 
-void style_set(Color color, float rounding = 0);
+void style_set(Color color);
 
 // The taskbar, its windows, the dialogue box, toasts and the select screen.
 class Ui