What's wrong with this entry?
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When publishing a design artifact (DesignSync), if another session has published a newer version of the same artifact since you last read it, you now receive a clear conflict error instructing you to re-read the current content, reconcile, and publish again.
Evidence
Conflict error string (search for "conflict: another session published a newer version of this artifact")
Strings lifted out of the shipped bundle, so the claim above can be checked against them.