Refine timeline/work area interactions

I love that I can now move the position of the work area without needing to move the handles. This is very helpful!

The current implementation is in pretty close proximity to the timeline itself. I find myself accidentally dragging the work area more often than expected due to the small height of the timeline.

I don’t know if the improvement is a matter of increasing the size of the timeline, or adding some amount of friction to moving the work area, either with hover or something. Just noticed this a lot this week.