CLOSED 2026-09-23 (claude-code, 075ddc4): Field.AssignedTo on ContentType.ProjectTask + EnableAssignToEmail on ProjectTasks (5510e6b).
FINDING while filing this very list. ContentType.ProjectTask has no AssignedTo - it has AssigneeSku, a lookup into BusinessPartners with opaque SKUs - so this backlog cannot name the operator, steward or claude-code as owner (owners are written in the body instead). ContentType.Task already has SharePoint AssignedTo; ProjectTask should inherit it, and then EnableAssignToEmail tells the owner.