Use case or problem
I did a typo in a frontmatter section but didn’t realize my mistake NOR did the interface even tell me there was a problem
Proposed solution
Some kind of system that visually lets the user know ‘just fyi, the frontmatter section has a formatting problem in it’… doesn’t necessarily have to say exactly what’s wrong like a proper linter… but just… inform the user that something is broken. Because there is no way to tell unless you find out that "oh huh, this note is not getting it’s tag applied from the frontmatter.
(I did a typo where I forgot to add a : for one of the frontmatter values. But didn’t notice)