You'll notice
Claude Code can now restore a missing Artifact file from its last published version
What
If the file backing a previously published Artifact goes missing, for example because a session resumed on a different machine or its temporary files were cleared, Claude Code can now detect this and restore the last-published version of the file to disk so it can be re-edited and re-published. Distinct messages are shown depending on whether the file can be read, is blocked, or is gone entirely.
Why
Previously a missing backing file would likely have blocked further edits to a published Artifact. This recovery path lets work continue without losing the published content.