What
When Claude Code labels who a message or comment on an artifact (a shared document or piece of content) came from, it now looks up the viewer's display name and shows labels like 'Claude (via )' or 'the user ()'. Before this change, it could only show the raw 8-character viewer ID.
Why
This makes attribution on shared artifacts more readable, showing an actual name instead of an opaque identifier when multiple people are viewing or commenting on the same content.