Refactored .NET server start

In the dev and production environment gets the .NET server started by Rust. Also, the secret IPC key gets set by using a local env variable.

app/MindWork AI Studio/Program.cs

@@ -11,7 +11,13 @@ using System.Reflection;
 using Microsoft.Extensions.FileProviders;
 #endif
 
-var rustApiPort = args.Length > 0 ? args[0] : "5000";
+if(args.Length == 0)
+{
+    Console.WriteLine("Please provide the port of the runtime API.");
+    return;
+}
+
+var rustApiPort = args[0];
 using var rust = new Rust(rustApiPort);
 var appPort = await rust.GetAppPort();
 if(appPort == 0)
@@ -20,6 +26,14 @@ if(appPort == 0)
     return;
 }
 
+// Read the secret key for the IPC from the AI_STUDIO_SECRET_KEY environment variable:
+var secretKey = Environment.GetEnvironmentVariable("AI_STUDIO_SECRET_KEY");
+if(string.IsNullOrWhiteSpace(secretKey))
+{
+    Console.WriteLine("The AI_STUDIO_SECRET_KEY environment variable is not set.");
+    return;
+}
+
 var builder = WebApplication.CreateBuilder();
 builder.Services.AddMudServices(config =>
 {