Ok text search would be great and is a theme for next major upgrade.
You can already jump to the start of any lower with the button left to layer selector in gcode preview. And highligting selecte dcode also works (just make sure your model color is not the same as yellow highlight color).
Automatic following the text selection is also a nice idea. Have to think about this and if there are cases where this could not be wanted. I guess there needs to be switch for it.