Cross out and darken completed tasks

[Uranusek]

Describe the solution you'd like
Currently, only items on the task list are darkened. I think it would be nice if, after completing all the elements, the title of the note was crossed out and the note was darkened.

Additional context
This will let you know that all items on your task list have been completed. Currently, you have to open the note to find out.

[PhilKes]

I get the idea, I just dont know if it might be inconvenient if the title is crossed out, since that makes it much less readable.

Another alternative would be to show an indicator how many tasks are completed in the list and only open tasks are shown in the preview:

If the task list is finished its not crossed out or darkened, but you can simply see that there is no open task left in the preview: