Kdenlive on Mac doesn't show window title icons
This could be a good starter task for someone new to Kdenlive
On Mac, many applications (e.g. TextEdit) show the icon of the currently open file in the title bar. This icon can be interacted with or dragged to another app as if it were a file in the file browser.
Kdenlive should use Qt's setWindowFilePath
when a file is opened to set the window title icon.