The verbs answered the holder's own shapes (missing and ended, a part named digest, versions as bare strings, held as
the publish's event) while the seat definitions, now generated into mesh-contracts, name lacks and held, part,
versions of artifacts, tags with digests and a hold's own body. A build module using mesh-sdk's parts helper would
have read no lacking part and sent nothing. The bundle now takes and answers the contract's types and says each
event in its body; an image's manifest is the part whose digest is the publish's, as the contract names no media
type, and a hold on the image seat is of a copied base.
Claude-Session: https://claude.ai/code/session_01JG73KJNrH5EgFXMKKYSrig
