How does the add-on handle models/objects that are subject to a workflow? Are the versions of a model counted separately or accumulated across versions?

Each model/object version is counted separately, since they are technically two different entities. More important here, however, is the search query that the evaluations are based on.

If, for example, the query runs based on the model name, the counter will continue to be incremented across versions, provided that the model name did not change. In this way, analyses of cumulative results can also be taken into account, in addition to the special assessment of a specific version.