Use version 1.1.101 for output blueprint string

src/FactorioTools.Serialization/OilField/Steps/GridToBlueprintString.cs

@@ -152,7 +152,7 @@ int GetEntityNumber(GridEntity entity)
 
         var blueprint = new Blueprint
         {
-            Icons = context.InputBlueprint.Icons ?? new[]
+            Icons = new[]
             {
                 new Icon
                 {
@@ -164,14 +164,32 @@ int GetEntityNumber(GridEntity entity)
                     }
                 }
             },
-            Version = context.InputBlueprint.Version,
-            Item = context.InputBlueprint.Item ?? ItemNames.Vanilla.Blueprint,
+            Version = FormatVersion(1, 1, 101, 1),
+            Item = ItemNames.Vanilla.Blueprint,
             Entities = entities.ToArray(),
         };
 
         return SerializeBlueprint(blueprint, addFbeOffset);
     }
 
+    /// <summary>
+    /// Source: https://wiki.factorio.com/Version_string_format
+    /// </summary>
+    public static (ushort major, ushort minor, ushort patch, ushort developer) ParseVersion(ulong version)
+    {
+        return (
+            (ushort)((version >> 48) & 0xFFFF),
+            (ushort)((version >> 32) & 0xFFFF),
+            (ushort)((version >> 16) & 0xFFFF),
+            (ushort)(version & 0xFFFF)
+        );
+    }
+
+    public static ulong FormatVersion(ushort major, ushort minor, ushort patch, ushort developer)
+    {
+        return ((ulong)major << 48) | ((ulong)minor << 32) | ((ulong)patch << 16) | developer;
+    }
+
     public static string SerializeBlueprint(Blueprint blueprint, bool addFbeOffset)
     {
         // FBE applies some offset to the blueprint coordinates. This makes it hard to compare the grid used in memory

src/FactorioTools/Data/Blueprint.cs

@@ -14,5 +14,5 @@ public class Blueprint
     public string Item { get; set; } = null!;
 
     [JsonPropertyName("version")]
-    public long Version { get; set; }
+    public ulong Version { get; set; }
 }

src/FactorioTools/OilField/Planner.cs

@@ -77,7 +77,6 @@ public static PlannerResult ExecuteSample()
                 }
             },
             Item = ItemNames.Vanilla.Blueprint,
-            Version = 0,
         };
 
         return Execute(options, inputBlueprint);

src/FactorioTools/OilField/Steps/CleanBlueprint.cs

@@ -47,7 +47,6 @@ public static Blueprint Execute(Blueprint blueprint)
                 }
             },
             Item = ItemNames.Vanilla.Blueprint,
-            Version = 0,
         };
     }
 }

src/FactorioTools/OilField/Steps/InitializeContext.cs

@@ -30,7 +30,6 @@ public static Context GetEmpty(OilFieldOptions options, int width, int height)
                 },
             },
             Item = ItemNames.Vanilla.Blueprint,
-            Version = 1,
         };
 
         return Execute(options, blueprint, Array.Empty<AvoidLocation>(), width, height);