`HEARTBEAT.md` is checked every 30 minutes. You can manage periodic tasks by editing this file:
- **Add a task**: Use `edit_file` to append new tasks to `HEARTBEAT.md`
- **Remove a task**: Use `edit_file` to remove completed or obsolete tasks
- **Rewrite tasks**: Use `write_file` to completely rewrite the task list
Task format examples:
```
- [ ] Check calendar and remind of upcoming events
- [ ] Scan inbox for urgent emails
- [ ] Check weather forecast for today
```
When the user asks you to add a recurring/periodic task, update `HEARTBEAT.md` instead of creating a one-time reminder. Keep the file small to minimize token usage.