Not implemented yet, but I think a relative search would be a good way to indicate this. So you would add a . at the start of your search to indicate that the path should be evaluated relative to the current focus.
Like this:
.//task
I think that would work pretty well. Does it seem like it would give the behavior that you want?
Also, I expect some of this might change in Bike 2, but these are good enough stopgap solutions I think.
The latest preview release supports relative paths (start with a period) to generate the items used in Command-P window. When the path is relative it will be executed relative to the current focus item. I think that should give the behavior that your want.
It does, but I don’t think I will add that right now. Bike 2 is adding outline filtering. I expect there will be some way to store and manager multiple outline path searches. I think that would be the system to leverage for this. So I want to wait on that first.