Under the hood
Artifact database reads now also flag documents as foreign when an outside writer has touched them
What
When Claude Code reads an artifact's shared database, it checks whether the artifact is a "foreign" document, meaning someone other than your account wrote it. That check now also treats a document as foreign if your account is the owner but a new signal shows an "outside writer" has been involved, alongside the existing checks for documents co-written by others.
Why
This closes a gap where a document could look like it belongs entirely to you even though someone outside had written to it, so Claude Code can flag it appropriately.