ERI: use camel case for JSON (#311)

app/MindWork AI Studio/Assistants/ERI/AssistantERI.razor.cs

@@ -290,6 +290,7 @@ public partial class AssistantERI : AssistantBaseCore
                       - You consider the security of the implementation by applying the Security by Design principle.
                       - Your output is formatted as Markdown. Code is formatted as code blocks. For every file, you
                         create a separate code block with its file path and name as chapter title.
+                      - Important: The JSON objects of the API messages use camel case for the data field names.
                       """);
             
             return sb.ToString();

app/MindWork AI Studio/Tools/ERIClient/ERIClientBase.cs

@@ -9,7 +9,7 @@ public abstract class ERIClientBase(string baseAddress) : IDisposable
     {
         WriteIndented = true,
         AllowTrailingCommas = true,
-        PropertyNamingPolicy = null,
+        PropertyNamingPolicy = JsonNamingPolicy.CamelCase,
         DictionaryKeyPolicy = JsonNamingPolicy.CamelCase,
         PropertyNameCaseInsensitive = true,
         Converters =