feat: checkpoint compact ordinary source and lossless default preservation

examples/release1/oa/behavior/scenario_oa_conversation.arcadia

@@ -1,7 +1,5 @@
 oa_scenario oa_conversation "Repair request and measured reply" id "20472233-5ce6-5ffe-b4ad-0bdbccf3e423" {
     context @oa_restore;
-    description "";
-    parent none;
     postcondition "The controller has received the measured pressure after repair";
     precondition "A pressure alarm has been assessed";
     steps [@oa_call, @oa_reply];
@@ -14,23 +12,17 @@ oa_occurrence oa_call "Request valve repair" id "b97437c6-cd7a-5a05-b537-b30a17d
             exchange @oa_contact;
             message_kind Call;
             receiver @oa_responder;
-            reply_to none;
             sender @oa_caller;
             values [{
                 expression "420.0";
                 field @oa_pressure_parameter;
-                path [];
             }];
         };
     };
-    description "";
     parent @oa_conversation;
-    postcondition "";
-    precondition "";
 }
 
 oa_lifeline oa_caller "Controller" id "41859a65-ded2-547b-ab03-14e2fa740cf9" {
-    description "";
     parent @oa_conversation;
     represented @oa_control;
 }
@@ -46,18 +38,13 @@ oa_occurrence oa_reply "Return pressure after repair" id "cc2d497a-fd15-5455-9ee
             values [{
                 expression "320.0";
                 field @oa_pressure_parameter;
-                path [];
             }];
         };
     };
-    description "";
     parent @oa_conversation;
-    postcondition "";
-    precondition "";
 }
 
 oa_lifeline oa_responder "Technician" id "fc81c5f0-0442-5b88-992b-e5b10f351c59" {
-    description "";
     parent @oa_conversation;
     represented @oa_technician;
 }