torchcell.datamodels.ontology_checks.media_derivation_issues

media_derivation_issues() → list[MediaDerivationIssue]

Derived media that silently lost a base component.

For a medium naming a base that exists, every (compound name, role) of the base must reappear in the derivative or be declared in dropouts. That is what makes “SC-Ura” a typed edit of SC rather than a separate recipe that happens to look similar.