expire download links

app/controllers/api/submission_events_controller.rb

@@ -14,16 +14,19 @@ module Api
                                :created_by_user, :submission_events,
                                template: :folder,
                                submitters: { documents_attachments: :blob, attachments_attachments: :blob },
-                               audit_trail_attachment: :blob
+                               audit_trail_attachment: :blob,
+                               combined_document_attachment: :blob
                              ),
                              field: :completed_at)
 
+      expires_at = Accounts.link_expires_at(current_account)
+
       render json: {
         data: submissions.map do |s|
                 {
                   event_type: 'submission.completed',
                   timestamp: s.completed_at,
-                  data: Submissions::SerializeForApi.call(s, s.submitters)
+                  data: Submissions::SerializeForApi.call(s, s.submitters, expires_at:)
                 }
               end,
         pagination: {