[BUG] newly added processes do not appear in terminal logs

[brandonbloom]

Describe the bug

It used to be that if you ran exo logs it would use nil when fetching events, meaning that it would get all logs from all proceses. But now we do a describe-processes up front, and so any newly added processes will not produce log output unless you restart the logs listener.

To Reproduce

• exo logs in an empty workspace
• exo new process ... with something that produces log output

Expected behavior

It should work like the GUI, where it dynamically handles newly added processes

[brandonbloom]

Might be worth revisiting this after overhauling the event architecture.