What
The step that publishes a file as an artifact can now be cancelled. An artifact is a file Claude Code shares as output. Cancelling it also takes back what was published.
Why
A file publish stopped partway no longer leaves the file published.
Something disagreesSomething we can check disagrees with this entry, or the writer said they could not settle it.
The writer flagged doubt
The finding does not say how a reader cancels a publish.