User story

As an event's kirpputorivastaava, I want to be able to send an informative email to all vendors with items in said event.

Current situation

I need to resort to asking someone to manage.py shell to

print(
    "\n".join(
        sorted(
            Item.objects.filter(vendor__event__name="Desucon Frostbite 2024")
            .values_list("vendor__user__email", flat=True)
            .distinct()
        )
    )
)

or similar.

We had an incident at Desucon 2017 where (my understanding of the situation is sort of vague) several items were left unmarked as "brought to event" even if they actually were, and their revenue wasn't correctly reimbursed to their vendor.

This might be caused by Kirppu not always checking for RPC success, but I'm not quite sure.

It'd be nice to have a live status view for vendors so they could see which items have been sold, etc. during an event.