Big update. Replaced Newtonsoft with System.Text.Json where possible, removed Spectre, tried to suppress the pile of compiler warnings I get on the GUI project, and tried to correct an issue where sometimes the session token retrieved is not usable.

KickWsClient/Converters/StringOrObjectConverter.cs

@@ -0,0 +1,37 @@
+using System.Text.Json;
+using System.Text.Json.Serialization;
+
+namespace KickWsClient.Converters;
+
+// Literal mess, but it is AI generated so what do you expect. Couldn't be bothered writing this myself.
+public class StringOrObjectConverter<T> : JsonConverter<T>
+{
+    public override bool CanConvert(Type typeToConvert)
+    {
+        return typeof(T).IsAssignableFrom(typeToConvert) || (typeof(T) == typeof(string) && typeToConvert == typeof(object));
+    }
+
+    public override T Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
+    {
+        if (reader.TokenType == JsonTokenType.String)
+        {
+            return (T)(object)reader.GetString()!;
+        }
+        else
+        {
+            return JsonSerializer.Deserialize<T>(ref reader, options)!;
+        }
+    }
+
+    public override void Write(Utf8JsonWriter writer, T value, JsonSerializerOptions options)
+    {
+        if (value is string)
+        {
+            writer.WriteStringValue((string)(object)value);
+        }
+        else
+        {
+            JsonSerializer.Serialize(writer, value, options);
+        }
+    }
+}