pub fn touch_for_comment_change(item: &mut Item, by: &str)Expand description
Bump an item’s updated / updated_by for sort recency without
appending to its attribute history. Use this for comment add / edit
/ rm: the item is touched but no attribute changed, so the audit
trail of comment activity lives on the comment itself (its edits
list, plus the item’s comments Vec membership) rather than in the
item’s attribute history.