Fix stage completion save

nksrv/LobbyServer/Msgs/User/GetContentsData.cs

@@ -8,9 +8,17 @@ namespace nksrv.LobbyServer.Msgs.User
         protected override async Task HandleAsync()
         {
             var req = await ReadData<ReqGetContentsOpenData>();
-
+            var user = GetUser();
 
             var response = new ResGetContentsOpenData();
+            foreach (var field in user.FieldInfo.Values)
+            {
+                foreach (var stage in field.CompletedStages)
+                {
+                    response.ClearStageList.Add(stage.StageId);
+                }
+            }
+
             WriteData(response);
         }
     }