Function note_from_event 

pub(crate) fn note_from_event(
    qt: &CxxQtThread<Sioul>,
    shared: &Arc<Shared>,
    key: &str,
    start: f64,
) -> String

A note for an event: dated, the guests listed, linked both ways (the event’s LINK when its calendar can be written, the note’s front matter always).