You'll noticeTier: how much it should matter to you
3Useful: my rating, 1 to 5
3Signal: worth watching, 1 to 5
SessionsArea: what it touches
ImprovementsKind: in v2.1.224,
ImprovementsSection of the release
What
After forking, Claude is now told that the fork runs as its own session, that its work is invisible to the current conversation, and that it can be reached by name through the session roster. This branch previously attached nothing.
Details
The message is produced only when cross-session messaging applies; otherwise nothing is attached.
Evidence
The fork runs as its own separate session
Strings lifted out of the shipped bundle, so the claim above can be checked against them.