Remove TraceHttpClientHandler and update DI setup

Removed the custom TraceHttpClientHandler and switched OpenAIClient initialization to use the default HTTP transport. Cleaned up unused using directives. Updated SqlDatabaseVectorSearch_WebApp.png with a new version.

SqlDatabaseVectorSearch/Program.cs

@@ -1,9 +1,6 @@
 using System.ClientModel;
-using System.ClientModel.Primitives;
 using System.Net.Mime;
 using System.Text;
-using System.Text.Encodings.Web;
-using System.Text.Json;
 using System.Text.Json.Serialization;
 using FluentValidation;
 using Microsoft.Agents.AI;
@@ -85,8 +82,7 @@ builder.Services.AddChatClient(_ =>
 {
     var chatClient = new OpenAIClient(new ApiKeyCredential(aiSettings.ChatCompletion.ApiKey), new()
     {
-        Endpoint = new(aiSettings.ChatCompletion.Endpoint),
+        Endpoint = new(aiSettings.ChatCompletion.Endpoint)
-        Transport = new HttpClientPipelineTransport(new HttpClient(new TraceHttpClientHandler()))
     }).GetResponsesClient().AsIChatClientWithStoredOutputDisabled(aiSettings.ChatCompletion.Deployment);
 
     return chatClient;
@@ -332,48 +328,4 @@ static async Task ConfigureDatabaseAsync(IServiceProvider serviceProvider)
     var dbContext = scope.ServiceProvider.GetRequiredService<ApplicationDbContext>();
 
     await dbContext.Database.MigrateAsync();
-}
-
-public class TraceHttpClientHandler : HttpClientHandler
-{
-    private static readonly JsonSerializerOptions jsonSerializerOptions = new()
-    {
-        WriteIndented = true,
-        Encoder = JavaScriptEncoder.UnsafeRelaxedJsonEscaping
-    };
-
-    protected override async Task<HttpResponseMessage> SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)
-    {
-        var requestString = request.Content is null ? "(no request body)" : await request.Content.ReadAsStringAsync(cancellationToken);
-
-        PrintText($"Raw Request ({request.RequestUri})", ConsoleColor.Green);
-        PrintText(FormatJson(requestString), ConsoleColor.DarkGray);
-        PrintSeparator();
-
-        var response = await base.SendAsync(request, cancellationToken);
-
-        return response;
-
-        static void PrintText(string message, ConsoleColor color)
-        {
-            Console.ForegroundColor = color;
-            Console.WriteLine(message);
-            Console.ResetColor();
-        }
-
-        static void PrintSeparator() => Console.WriteLine(new string('-', 50));
-    }
-
-    private static string FormatJson(string input)
-    {
-        try
-        {
-            var jsonElement = JsonSerializer.Deserialize<JsonElement>(input);
-            return JsonSerializer.Serialize(jsonElement, jsonSerializerOptions);
-        }
-        catch
-        {
-            return input;
-        }
-    }
 }