Replace content publishing workflow with direct Unfold editing

apps/content/models.py

@@ -299,3 +299,8 @@ class PublicationAudit(models.Model):
 
     def delete(self, *args, **kwargs):
         raise ValidationError("Publication audit records are append only.")
+
+
+# Imported for Django model discovery. The revision models above remain for
+# forward-only migration of data created under the earlier CMS design.
+from .current import AboutContent, AboutItem, HomeContent, ListingContent, SiteContent  # noqa: E402,F401