I've got plenty of space left and right of the title/controls, so I can easily put more controls there. I want a first/last, and I like the idea of a calendar, although that might need to hide behind a drop-down.

The other fix to do is for the latest/last seen tags. Instead of two (one ::before and one ::after) and some messing about with positioning, I want one ::before, and then latest/last seen can set content (with a .latest.lastseen combined selector for when the entry is tagged with both.

Except that won't work if/when I bring in proper tagging.

I'm going to ignore that for now. Get the current problem fixed, and then think about how to fix it if/as/when I actually do bring in tagging. (I'm not sure, for example, how I'd tag this entry).