Why a work item is not yet something an implementer could be dispatched
against, or null when it is (#221). Deliberately narrow: the scaffold's
own placeholder, an empty contact surface, or empty acceptance tests —
the three things the stub ships blank. Key presence is the contract's
business (validateArtifact); this is about whether the human filled in
what the scaffold left for them.
Why a work item is not yet something an implementer could be dispatched against, or null when it is (#221). Deliberately narrow: the scaffold's own placeholder, an empty contact surface, or empty acceptance tests — the three things the stub ships blank. Key presence is the contract's business (
validateArtifact); this is about whether the human filled in what the scaffold left for them.