You'll notice
The 'file changed since you read it' error now names which host to re-read the file on, in multi-host sessions
What
When Claude Code detects that a file was modified after it was last read, and the session spans multiple hosts (machines), the error message now tells the model exactly which host to re-read the file on, using an explicit _host parameter in the Read tool call. Previously the message was generic and didn't specify a host.
Why
In multi-host sessions, a file with the same path can exist independently on different machines. Naming the host removes ambiguity about where the file actually changed, so the model re-reads the correct copy before retrying the write.