how do i undo...

Hello stratis​! 👋

Thank you for reaching out. I’m really sorry you’re dealing with this, I can imagine how stressful it must be to realize those items were deleted. We'll do everything that we can to help you from here. When you choose to permanently delete a vault, all archived items in that vault will also be permanently deleted as warned in the prompt that appears in the 1Password app: 

I recommend that you immediately set any devices where you're using 1Password offline (disconnect them completely from the internet) to try to prevent them from syncing the vault deletion. Then, please send an email to support@1Password.com so that our support team can take a closer look and include a link to this thread. After emailing in, you'll receive a reply from BitBot, our friendly robot assistant with a Support ID that looks something like [#ABC-12345-678]. Post that here, and I'll be able to locate your message and make sure it's gotten to the right place.

-Dave