You'll notice
Useful1 Signal1
The publish hint about missing file_path or favicon is simpler now.
What's wrong with this entry?
Anonymous. No account, no email.
What
The explanation shown when file_path or favicon is missing dropped its type-specific wording and now just notes that this would create a new artifact, and that passing a url updates an existing one and keeps its icon.
Evidence
a new Artifact — to update an existing one instead, pass its url (its icon is kept)
Strings lifted out of the shipped bundle, so the claim above can be checked against them.