Use case or problem
It can be easy to miss that something linked/embedded in a to-be-Published note is not published. The “Add linked” button is there, but if you forget to press it, you might not notice that your published page(s) are broken.
Detect when a note to-be-Published has linked items that aren’t themselves Published. When this happens, call attention to the “Add linked” button somehow (e.g., make it coloured, or glow, or bounce, or something).
Current workaround (optional)
Don’t forget to hit “Add linked”