test(benchmarks): add C#/ASP.NET and TypeScript tasks

Six tasks with hidden checks: ASP.NET validation and 404 handling, C#
cancellation, and TypeScript overlap, deep merge, and debounce fixes, checked
with dotnet run and node --test.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

scripts/benchmarks/tasks/16-aspnet-unknown-customer/repo/src/Crm/AppHost.cs

@@ -0,0 +1,16 @@
+namespace Crm;
+
+public static class AppHost
+{
+    // Integration tests start the application through Build.
+    public static WebApplication Build(string[] args)
+    {
+        var builder = WebApplication.CreateBuilder(args);
+        var app = builder.Build();
+        var customers = new Dictionary<int, Customer> { [1] = new(1, "Ada") };
+        app.MapGet("/customers/{id:int}", (int id) => customers[id]);
+        return app;
+    }
+}
+
+public record Customer(int Id, string Name);

scripts/benchmarks/tasks/16-aspnet-unknown-customer/repo/src/Crm/Crm.csproj

@@ -0,0 +1,7 @@
+<Project Sdk="Microsoft.NET.Sdk.Web">
+  <PropertyGroup>
+    <TargetFramework>net10.0</TargetFramework>
+    <Nullable>enable</Nullable>
+    <ImplicitUsings>enable</ImplicitUsings>
+  </PropertyGroup>
+</Project>

scripts/benchmarks/tasks/16-aspnet-unknown-customer/repo/src/Crm/Program.cs

@@ -0,0 +1 @@
+Crm.AppHost.Build(args).Run();