User Stories for Task Management System

1. As a user, I should be able to create a new task with a title, description, and priority level so that I can add tasks to my list.
2. As a user, I should be able to see a list of all my tasks, sorted by priority or date created so that I can easily find and manage them.
3. As a user, I should be able to update the title, description, or priority of a task.
4. As a user, I should be able to delete a task from my list when I don't need it anymore.
5. As a user, I should be able to save my task list to a file so that I can load them the next time I open the application.
6. As a user, I should be informed gracefully if something goes wrong, such as saving to a file or reading from a file that doesn't exist.
7. As a user, I should be able to filter tasks by their priority or date created.
8. As a user, I should be able to see statistics, like the number of tasks per priority.
9. As a user, I should be able to perform bulk operations, like marking multiple tasks as complete.
10. As a user, if I accidentally delete or update a task, I should be able to undo the last action.