Retracted: Phantom path (tilde). The natural retraction tag v4~/v1.18.2
is an invalid git ref name, so this retraction is published as the root tag
v1.18.2 instead — which is how this path is already keyed (its versions are
the repo's v1.x root tags).
Codec is used for encoding where the transport doesn't natively support
headers in the message type. In this case the entire message is
encoded as the payload