You'll noticeTier: how much it should matter to you
2Useful: my rating, 1 to 5
3Signal: worth watching, 1 to 5
ProjectsArea: what it touches
ImprovementsKind: in v2.1.321,
ImprovementsSection of the release
What
A session is one continuous run of Claude Code. Sometimes the server, rather than you, sets which Project a session uses. In that case /project now answers: "/project can't change a Project the server set. It applies until this session ends." Where Claude Code shows where the Project came from, it now reads "set by the server for this session".
Why
You can tell why /project will not switch Projects, and know that starting a new session is how the server's choice ends.