Set Application Icon for Windows
On Windows, right now, the Taskbar Icon is set to our C7 icon, but the Application Icon (which shows up in Explorer) is the default Godot icon.
Godot has a helpful guide to explain why this is and how to fix it: https://docs.godotengine.org/en/stable/tutorials/export/changing_application_icon_for_windows.html
(I am not sure whether a similar issue exists on Mac/Linux, but I don't see it listed as a dedicated topic in the Godot help system for those platforms)
There's not a universal app icon in Linux, and unless it's an installable package like deb or flatpack I don't think there would be any icon for the executable by default. We could include a .desktop file that they can put somewhere as a shortcut.