Add XML documentation across gateway, worker, and .NET client

src/MxGateway.Server/Workers/WorkerServiceCollectionExtensions.cs

@@ -1,7 +1,10 @@
 namespace MxGateway.Server.Workers;
 
+/// <summary>Service collection extensions for worker process management.</summary>
 public static class WorkerServiceCollectionExtensions
 {
+    /// <summary>Registers worker process launcher and factory services.</summary>
+    /// <param name="services">Service collection to register services.</param>
     public static IServiceCollection AddWorkerProcessLauncher(this IServiceCollection services)
     {
         services.AddSingleton<IWorkerProcessFactory, SystemWorkerProcessFactory>();