feat: checkpoint compact ordinary source and lossless default preservation

examples/release1/views/diagram_oa_allocation_view.arcadia

@@ -1,21 +1,9 @@
 diagram oa_allocation_view "1 · OA responsibility and repair traffic" id "103ea62c-ac56-5827-94e7-cf09bca96ccc" {
     description "Teaching view: positions and filters do not change ownership or exchange identities.";
-    layer Oa;
     projection Allocation;
-    routes [];
-    view_options {
-        coverage "All";
-        exchange_labels "Name";
-        hidden_edges [];
-        participant_categories "All";
-        relation_kinds "All";
-        work_categories "All";
-        work_contexts "All";
-    };
 }
 
 node oa_allocation_view_oa_assess id "5ae1c46d-59a3-50fd-8cc3-b292df21f951" {
-    collapsed false;
     diagram @oa_allocation_view;
     element @oa_assess;
     position {
@@ -29,7 +17,6 @@ node oa_allocation_view_oa_assess id "5ae1c46d-59a3-50fd-8cc3-b292df21f951" {
 }
 
 node oa_allocation_view_oa_confirm id "edd74060-ac61-5450-a57c-a6577daa5d50" {
-    collapsed false;
     diagram @oa_allocation_view;
     element @oa_confirm;
     position {
@@ -43,7 +30,6 @@ node oa_allocation_view_oa_confirm id "edd74060-ac61-5450-a57c-a6577daa5d50" {
 }
 
 node oa_allocation_view_oa_control id "3191e05c-1c7f-5f0e-beb0-5f3bded54c48" {
-    collapsed false;
     diagram @oa_allocation_view;
     element @oa_control;
     position {
@@ -57,7 +43,6 @@ node oa_allocation_view_oa_control id "3191e05c-1c7f-5f0e-beb0-5f3bded54c48" {
 }
 
 node oa_allocation_view_oa_repair id "202ebe37-ddb4-5099-8ce9-ec3e895ab9e9" {
-    collapsed false;
     diagram @oa_allocation_view;
     element @oa_repair;
     position {
@@ -71,7 +56,6 @@ node oa_allocation_view_oa_repair id "202ebe37-ddb4-5099-8ce9-ec3e895ab9e9" {
 }
 
 node oa_allocation_view_oa_reset id "7066f78c-9736-5349-b94a-0587331b980e" {
-    collapsed false;
     diagram @oa_allocation_view;
     element @oa_reset;
     position {
@@ -85,7 +69,6 @@ node oa_allocation_view_oa_reset id "7066f78c-9736-5349-b94a-0587331b980e" {
 }
 
 node oa_allocation_view_oa_technician id "d27f28ef-f10a-5355-9a05-6f2fd39b7de6" {
-    collapsed false;
     diagram @oa_allocation_view;
     element @oa_technician;
     position {