For those of us who use the Junk tab for our treasures:
Weird, I know. But I've been doing it for more than half the decade playing ESO. I just like keeping specific things I use a lot in their own tab: foods, potions, scrolls, a Crate Lid for flying around houses, etc. And while I never had any accidents, I have wished for fool-proofing.
I happened to find an existing thread with some scripts, and addon author Baertram helped as always:
The Elder Scrolls Online, AddOns and Mods Community.
This removes the "Sell All Junk" and "Destroy All Junk" buttons and disables the associated keystrokes:
Posting for other odd ducks. If you've been googling it for a while as I have, you'd know there's very little info, and just 1 reddit thread where someone got downvoted to hell for playing this way. But they are not alone. We are... well, not legion. But certainly some. We are SOME! 😹
I'm not an addon author and fairly clueless about them beyond copy-pasting some basic structure. I'm definitely not qualified to troubleshoot for anyone else. So,
Use at your own risk! ... Which, if you stow your stuff in Junk to begin with, is only to be expected 😉