You'll notice
Useful2 Signal1
A failed artifact publish now tells you a name was already reserved, so you retry against it.
What's wrong with this entry?
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What
If a publish fails after reserving a name for the artifact, the result now tells you to retry against that reserved name rather than publishing fresh, instead of keeping the reserved value silently. Applies when the publish reserved a slug and none was supplied.
Evidence
A slug WAS reserved
Strings lifted out of the shipped bundle, so the claim above can be checked against them.