Under the hoodTier: how much it should matter to you
1Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
SessionsArea: what it touches
Internal ChangesKind: in v2.1.323,
Internal ChangesSection of the release
What
A background session is one that keeps working while you do something else. Claude Code uses a classifier to summarize these sessions. The classifier is a separate model request that reads a session and describes it. It changed in two ways:
Extra instructions about "other threads" can now be added to its request, including one for project recaps.
A reply that repeats the tools line is now rejected, and the request is tried again.
Why
This changes how Claude Code summarizes background sessions.
