HI @mogul and welcome to the forum!
We have several requests for keyboard control of various UI features. For example, see Issue #11. The biggest reason we have not yet any keyboard support is due to keyboard focus. However, a global space bar to toggle run/pause would be pretty easy and sensible. The Joulescope UI will still have to be the active window on your computer. I created Issue #78 to capture the space bar controlling run/pause.
Hi @JuliaTruchsess and thanks for following up on triggering. Adding triggering support is still on our future features list. We have not yet made any progress. I have made a note to look into this again. Some of the architecture changes over the last 6 months have made this feature easier to add.