Fix build errors in Example test files

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: HavenDV

src/tests/IntegrationTests/Examples/MagicPrompt.cs

@@ -23,8 +23,8 @@ public async Task Example_MagicPrompt()
             ClassifyPromptCategory = true,
         });
 
-        Console.WriteLine($"Enhanced prompt: {response.Prompt}");
+        Console.WriteLine($"Enhanced prompt: {response.MagicPrompt}");
 
-        response.Prompt.Should().NotBeNullOrEmpty();
+        response.MagicPrompt.Should().NotBeNullOrEmpty();
     }
 }