rename IsCancelled to IsCanceled - American English

Author: dogukandemir

src/ModelContextProtocol.Core/Protocol/ElicitResult.cs

@@ -67,5 +67,5 @@ public sealed class ElicitResult : Result
     /// </summary>
     /// <returns><see langword="true"/> if the action is "cancel"; otherwise, <see langword="false"/>.</returns>
     [JsonIgnore]
-    public bool IsCancelled => string.Equals(Action, "cancel", StringComparison.OrdinalIgnoreCase);
+    public bool IsCanceled => string.Equals(Action, "cancel", StringComparison.OrdinalIgnoreCase);
 }

tests/ModelContextProtocol.Tests/Protocol/ElicitResultTests.cs

@@ -50,7 +50,7 @@ public void IsCancelled_Returns_True_For_VariousCancelledActions(string action)
         var result = new ElicitResult { Action = action };
 
         // Act
-        var isCancelled = result.IsCancelled;
+        var isCancelled = result.IsCanceled;
 
         // Assert
         Assert.True(isCancelled);
@@ -83,7 +83,7 @@ public void IsCancelled_Returns_True_For_DefaultAction()
         var result = new ElicitResult();
 
         // Act & Assert
-        Assert.True(result.IsCancelled);
+        Assert.True(result.IsCanceled);
     }
 
     [Fact]
@@ -113,7 +113,7 @@ public void IsCancelled_Returns_False_For_Null_Action()
         var result = new ElicitResult { Action = null! };
 
         // Act & Assert
-        Assert.False(result.IsCancelled);
+        Assert.False(result.IsCanceled);
     }
 
     [Theory]
@@ -132,7 +132,7 @@ public void JsonSerialization_ExcludesJsonIgnoredProperties(string action)
         // Assert
         Assert.DoesNotContain("IsAccepted", json);
         Assert.DoesNotContain("IsDeclined", json);
-        Assert.DoesNotContain("IsCancelled", json);
+        Assert.DoesNotContain("IsCanceled", json);
         Assert.Contains($"\"action\":\"{action}\"", json);
     }
 
@@ -155,6 +155,6 @@ public void JsonRoundTrip_PreservesActionAndComputedProperties(string action, bo
         Assert.Equal(action, deserialized.Action);
         Assert.Equal(isAccepted, deserialized.IsAccepted);
         Assert.Equal(isDeclined, deserialized.IsDeclined);
-        Assert.Equal(isCancelled, deserialized.IsCancelled);
+        Assert.Equal(isCancelled, deserialized.IsCanceled);
     }
 }