scenario: boss dies, everyone can choose what to do with the dropped items. how do I know that everybody has chosen an action?

It would be cool if there was a notification telling you that everyone has now decided on whether they need the item or not. Otherwise there's always somebody who is late and the items are already in the process of being handed out.

Keep up the good work <3

Everything's technically possible :)
I'll look into it when time allows.

They show up in the voting frame as "selecting response". The thing about notifications is it becomes spammy really quick. Imagine looting 10 items - all a notification could do is something like "All responses received for session 1/[item]" which quickly becomes useless as you have to mentally map session number with the UI (especially if there's multiples of the same items). The alternative is to add a counter to each session (similar to the loot status), but there's not much room left to work with, and imo it becomes clutter.

I'd recommend you look at the responses (maybe filter out passes and autopasses) to see if everyone has responded, and maybe set a timeout so you don't have to wait forever.

I see... Would it be possible to add a single notification for when everyone has responded for all items a boss dropped?
of course, a notification for each individual item would make it extremely spammy, absolutely agree with that.