When joining a room show already sent chat messages

desktop-client/room_widget.py

@@ -366,8 +366,6 @@ class RoomWidget(QWidget):
         self.chat_messages.setWidget(self.chat_content)
         self.chat_messages.toPlainText = self.toPlainText # For test compatibility
         
-        # Initial welcome message
-        self.add_system_message("Welcome to the room! 👋")
         
         chat_input_layout = QHBoxLayout()
         self.chat_input = QLineEdit()
@@ -443,7 +441,7 @@ class RoomWidget(QWidget):
         for i in reversed(range(self.chat_content_layout.count())):
             self.chat_content_layout.itemAt(i).widget().setParent(None)
         
-        self.add_system_message("Welcome to the room! 👋")
+        
         self.current_users = []
         self._is_first_user_update = True
         
@@ -906,6 +904,12 @@ class RoomWidget(QWidget):
         self.chat_content_layout.addWidget(msg)
         self._scroll_to_bottom()
 
+    def clear_chat(self):
+        for i in reversed(range(self.chat_content_layout.count())):
+            item = self.chat_content_layout.itemAt(i)
+            if item.widget():
+                item.widget().setParent(None)
+
     def send_chat(self):
         text = self.chat_input.text().strip()
         if not text: