Here’s the share as well. Not sure if we want two separate buttons or one ? This looks great tho. 
Discussion
I think we need just one, a bunch of people will just bookmark, not folder, but in some cases like you, you need the folder structure and we have to cover that case providing you de option without having two buttons. Have an idea. 💡
#[4] in the past a couple users have specifically requested folders. I wonder how trello type labels could look like, and if labels can be used without search