A background daemon holds the session state between different CLI calls. This daemon is started automatically on the first webctl call and auto-closes after a timeout period of inactivity to save resources.
Yes, you can create isolated environments using the "--session NAME" flag.
It isolates cookies and local storage for that specific run. Since it's a V1 release, there might be some edge cases in the session isolation - if you hit any, please open an issue!
