What key user interface differences need to be genuinely considered when adapting a Flutter app originally designed for mobile touch input to instead properly work well with a desktop's mouse and keyboard input?

Adapting a mobile focused interface for desktop use typically requires genuinely considering several meaningful differences, including generally larger available screen space that often benefits from a more efficient multi column layout, hover states that only genuinely make sense with an actual mouse cursor and simply do not exist at all on a touch based device, keyboard shortcuts that desktop users have generally come to expect for common actions, and interactive touch targets that were originally sized specifically for a fingertip potentially being made unnecessarily large and visually awkward when used together with a considerably more precise mouse pointer instead.

MouseRegion(
  onEnter: (_) => setState(() => isHovering = true),
  onExit: (_) => setState(() => isHovering = false),
  child: Container(color: isHovering ? Colors.blue.shade100 : Colors.white),
)