When the tech is not researched, tech description for all levels says "Construction robots can build up to 1 builds at same time."
I believe, it should either say "Construction robots can one more build at same time.", or "Construction robots can build up to {tech level+1} builds at same time."

I have a problem with infinite, maybe "Construction robots can build 1 more builds at same time."

Ok, that's one way to fix it.
BTW, I haven't tested it yet, but will the researched queue size be listed in the Bonuses view?

I've tried, I can't add a custom text in bonuses view