Merge pull request #13 from pieces-app/bug/fix-system-prompting

Fixing system prompt being ignored in long chats

src/Client/Copilot/CopilotChat.cs

@@ -294,6 +294,7 @@ private async Task<string> CreateQuestionInputJsonAsync(string question, Cancell
             relevant: relevant,
             application: application.Id,
             temporal: temporalRangeGrounding,
+            messages: conversation.Messages,
             model: Model.Id
         );