(I couldn't find a list for "Frontend standards group" and I'm not sure if all its engineers are on the design list.)
I congratulated James_F on IRC for VisualEditor/ OOjs UI adopting the mediawiki.ui style, but then it went topsy-turvy:
spagewmf I missed that VisualEditor is now using the mediawiki.ui style formerly known as "Agora"
James_F No, we are not.
Agora and MediaWiki.ui are both previous designs. This one is different, apparently.
Don't ask me how. :-) It's mostly similar, at least.
It's the MediaWiki Theme for OOjs UI.
spagewmf How is WMF keeping the "simple"
mw-ui-button mw-ui-constructive and OOjs UI's more elaborate
oo-ui-widget > oo-ui-buttonElement oo-ui-flaggedElement-constructive CSS in sync? Are we able to share LESS rules?
James_F MW UI isn't being kept in sync with the new design, I believe. I don't think it's credible to try to marry the technologies together with shared files – it'd be a huge amount of work for a short-term hack.
spagewmf The mw-ui- classes are a lot easier for humans to grok/reuse, e.g.
https://en.wikipedia.org/wiki/Template:Clickable_button It could be very cool for pages to have OOjs UI gadgets someday.
James_F Well, tough. :-) MW-UI won't be around for much longer.