Fix clear message history

chat/ChatClientInterface.cpp

@@ -103,6 +103,14 @@ void ChatClientInterface::sendMessage(const QString &message)
     m_requestHandler->sendLLMRequest(config, request);
 }
 
+void ChatClientInterface::clearMessages()
+{
+    m_chatHistory = {};
+    m_accumulatedResponse.clear();
+    m_pendingMessage.clear();
+    logMessage("Chat history cleared");
+}
+
 void ChatClientInterface::handleLLMResponse(const QString &response, bool isComplete)
 {
     m_accumulatedResponse += response;

chat/ChatClientInterface.hpp

@@ -35,6 +35,7 @@ public:
     ~ChatClientInterface();
 
     void sendMessage(const QString &message);
+    void clearMessages();
 
 signals:
     void messageReceived(const QString &message);

chat/ChatWidget.cpp

@@ -134,6 +134,7 @@ void ChatWidget::clear()
 {
     m_chatDisplay->clear();
     m_currentAIResponse.clear();
+    m_chatClient->clearMessages();
 }
 
 void ChatWidget::scrollToBottom()

chat/ChatWidget.h

@@ -40,6 +40,7 @@ public:
     void setShowTimestamp(bool show);
 
     void receiveMessage(const QString &message);
+
 private slots:
     void sendMessage();
     void receivePartialMessage(const QString &partialMessage);