Under the hood
Artifacts file listings can now be flagged as a narrowed, partial view for outside readers
What
When the Artifacts tool lists files, results can now carry a narrowed flag. When set, Claude is told that the listing shown is only the published subset that an outside reader can see, and that some files may be left out.
Why
This prevents Claude from assuming a file listing is complete when it's actually been filtered down to what an outside viewer is permitted to see.