See it the moment a mailbox connection needs attention

A mailbox connected over IMAP can start failing for reasons that have nothing to do with Talyro: an expired app password, a provider revoking access, a changed setting on the mailbox itself. That failure used to be logged internally and nowhere else, so from your side the only symptom was replies that quietly stopped showing up, with no clue as to why.

Settings now surfaces that failure directly: a mailbox with a failing IMAP connection shows a warning right there in the list, as soon as it happens, instead of only in a log you'd never think to check.

It's a small change, but a connection that's silently broken is worse than one that visibly is, since only one of those tells you to go fix it.