Fix user name display in history - Ensure metadata.userName is properly saved and displayed

app.py

@@ -587,6 +587,17 @@ async def save_checklist(user_id: str, checklist_data: dict):
         session_id = f"{user_id}-{datetime.utcnow().strftime('%Y%m%d-%H%M%S')}"
         checklist_dict['sessionId'] = session_id
         
+        # Ensure metadata exists and contains user information
+        if 'metadata' not in checklist_dict:
+            checklist_dict['metadata'] = {}
+        
+        # Add user name from metadata if available, or use a default
+        user_name = checklist_dict['metadata'].get('userName', 'Unknown User')
+        checklist_dict['metadata']['userName'] = user_name
+        checklist_dict['metadata']['userId'] = user_id
+        checklist_dict['metadata']['savedAt'] = datetime.utcnow().isoformat()
+        checklist_dict['metadata']['savedAtFormatted'] = datetime.utcnow().strftime('%d/%m/%Y, %H:%M:%S')
+        
         # Remove _id if it exists to let MongoDB generate a new one
         if '_id' in checklist_dict:
             del checklist_dict['_id']