Добавил DI, основные классы создаются через вбрасывание зависимостей через конструктор

Program.cs

@@ -1,9 +1,12 @@
-using System;
+using Microsoft.Extensions.DependencyInjection;
+using System;
 using System.Globalization;
 using System.IO;
 using System.Reflection;
 using System.Text.Json;
 using System.Threading;
+using ZaoBot.Config;
+using ZaoBot.OpenHab;
 
 namespace ZaoBot
 {
@@ -12,30 +15,45 @@ namespace ZaoBot
 		static BotService bot;
 		static JsonDocument config;
 
+		static ServiceCollection services;
+
 		static void Main(string[] args)
 		{
 			CultureInfo.CurrentCulture = CultureInfo.InvariantCulture;
 			config = LoadConfig();
-			var receiver = new NotificationReceiver(config);
-			var notificationThread = new Thread(new ThreadStart(receiver.Run));
-			notificationThread.Start();
-			while (true)
+			services = new ServiceCollection();
+			services.AddSingleton<IConfig, Config.Config>(CreateConfig);
+			services.AddSingleton<BotService, BotService>();
+			services.AddSingleton<OpenHabClient, OpenHabClient>();
+			services.AddSingleton<NotificationReceiver, NotificationReceiver>();
+			using (var provider = services.BuildServiceProvider())
 			{
-				try
+				var receiver = provider.GetRequiredService<NotificationReceiver>();
+				var notificationThread = new Thread(new ThreadStart(receiver.Run));
+				notificationThread.Start();
+				while (true)
 				{
-					bot = new BotService(config);
-					bot.Run();
-				}
-				catch (Exception e)
-				{
-					// Тут ловим всё, при ошибках просто заново поднимаем бота
-					Console.WriteLine("Exception: " + e.Message);
-					Console.WriteLine(e.StackTrace);
-					Console.WriteLine("Restarting bot");
+					try
+					{
+						bot = provider.GetRequiredService<BotService>();
+						bot.Run();
+					}
+					catch (Exception e)
+					{
+						// Тут ловим всё, при ошибках просто заново поднимаем бота
+						Console.WriteLine("Exception: " + e.Message);
+						Console.WriteLine(e.StackTrace);
+						Console.WriteLine("Restarting bot");
+					}
 				}
 			}
 		}
 
+		private static Config.Config CreateConfig(IServiceProvider arg)
+		{
+			return new Config.Config(config);
+		}
+
 		private static JsonDocument LoadConfig()
 		{
 			string assemblyFolder = Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location);