model pointer improvements

When generating a default anchor name, make sure that name isn't already in use.
When generating a default anchor name, put it in `misc.temp.`. Don't save anchors in from namespace to the toml file. This should make cut/paste operations less prone to adding noise to the toml.

src/HexManiac.Core/Models/PokemonModel.cs

@@ -1918,14 +1918,21 @@ public class PokemonModel : BaseModel {
          var textSample = GetSampleText(run);
          var initialAddress = run.Start.ToString("X6");
 
-         return $"misc.{gameCodeText}_{initialAddress}{textSample}";
+         var defaultName = $"misc.temp.{gameCodeText}_{initialAddress}{textSample}";
+         if (!addressForAnchor.ContainsKey(defaultName)) return defaultName;
+
+         int counter = 0;
+         while (true) {
+            counter++;
+            if (!addressForAnchor.ContainsKey(defaultName + "_" + counter)) return defaultName + "_" + counter;
+         }
       }
 
       /// <summary>
       /// If this model recognizes a GameCode AsciiRun, return that code formatted as a name.
       /// </summary>
       public static string ReadGameCode(IDataModel model) {
-         var address = model.GetAddressFromAnchor(new NoDataChangeDeltaModel(), -1, "GameCode");
+         var address = model.GetAddressFromAnchor(new NoDataChangeDeltaModel(), -1, "data.header.gamecode");
          if (address == Pointer.NULL) return string.Empty;
          if (!(model.GetNextRun(address) is AsciiRun gameCode) || gameCode.Start != address) return string.Empty;
          return new string(gameCode.Length.Range().Select(i => (char)model[gameCode.Start + i]).ToArray());
@@ -2066,6 +2073,7 @@ public class PokemonModel : BaseModel {
          var anchors = new List<StoredAnchor>();
          foreach (var kvp in anchorForAddress) {
             var (address, name) = (kvp.Key, kvp.Value);
+            if (name.StartsWith("misc.temp.")) continue; // don't persist miscilaneous temp anchors
             var index = BinarySearch(address);
             if (index < 0) continue;
             var format = runs[index].FormatString;

src/HexManiac.Tests/Before_Baseclass/PointerModelTests.cs

@@ -915,6 +915,40 @@ public class PointerModelTests : BaseViewModelTestClass {
          Assert.True(ViewPort.IsMetadataOnlyChange);
       }
 
+      [Fact]
+      public void DefaultAnchorNameInPuse_CreateDefaultAnchor_UsesDifferentName() {
+         SetFullModel(0xFF);
+         ViewPort.Edit("@20 ^misc.temp._000100 @00!00(8) ^table[ptr<>]2 <100> ");
+
+         ViewPort.Goto.Execute("100");
+         ViewPort.SelectionEnd = new(3, 0);
+         ViewPort.Cut(FileSystem);
+
+         Assert.Equal(0x20, Model.GetAddressFromAnchor(new(), -1, "misc.temp._000100")); // old anchor is still there
+         Assert.Equal("^misc.temp._000100_1 FF FF FF FF", FileSystem.CopyText.value);    // copy includes new anchor
+         Assert.Equal(new[] { 0x00 }, Model.GetUnmappedSourcesToAnchor("misc.temp._000100_1")); // address 0 should point to the new anchor
+      }
+
+      [Fact]
+      public void TempAnchor_ExportMetadata_DoNotIncludeTempAnchor() {
+         ViewPort.Edit("^misc.temp.stuff ");
+
+         var metadata = Model.ExportMetadata(Singletons.MetadataInfo);
+
+         var anchors = metadata.NamedAnchors.Select(anchor => anchor.Name).ToList();
+         Assert.DoesNotContain("misc.temp.stuff", anchors);
+      }
+
+      [Fact]
+      public void PointerToTempAnchor_ExportMetadata_DoIncludeUnmappedPointer() {
+         ViewPort.Edit("<misc.temp.stuff>");
+
+         var metadata = Model.ExportMetadata(Singletons.MetadataInfo);
+
+         var unmappedPointers = metadata.UnmappedPointers.Select(up => up.Name).ToList();
+         Assert.Contains("misc.temp.stuff", unmappedPointers);
+      }
+
       private void StandardSetup(out byte[] data, out PokemonModel model, out ViewPort viewPort) {
          data = new byte[0x200];
          model = new PokemonModel(data);