What probably matters to youSection of the release
What
Set CLAUDE_CODE_MESSAGING_SOCKET to a socket path and Claude Code records it with the session and, when the output format is stream-json, turns on replay of user messages without you asking for it. The variable is also carried through the set of CLAUDE_CODE_* variables Claude Code forwards to what it launches.
Details
The path is stored on the session registration record as messaging_socket_path.
Replay is only auto-enabled when it was not already on and the output format is stream-json; other output formats ignore the socket path for this purpose.
Neither the variable nor the session field existed in the previous build.
