The ability to well, access the interstellar community without being total pariahs and our main industrial belt devastated from fighting is definitely more valuable than whatever scraps of technology we get in combat with the CLP.
We've had some good luck, but most of what they are fielding is just outdated military equipment, there is just not much we can get out of it tbh. Capturing one of their ships is a pipe dream as well.
The peace treaty will allow us to reconstruct mostly unbothered, and reach out for the stars. We can send our tens of thousands of PhD holders to foreign universities, hire Sallie technical experts, import machinery, license technology and all that good stuff much sooner and more easily than if we continue the war.
Furthermore, it is worth noting we have access to their corporate communications. We can probably set up listening posts to spy on them, and have a pretty good picture on CLP office politics and make sure we are on top of whatever they try to pull.
Do we have any indication that the guys invading us know the owls exist, and if we think they do, can we carve out a "and leave the owls the hell alone" clause in our peace treaty? Because no way in hell are we signing a peace treaty with them only for them to just cart literally this same expeditionary force over to Owl Planet and try and conquer them.
I know Blackstar has answered this, but expanding on it, remember that Kuriuq is a pretty shitty world. There are no precursor artifacts there to make a profit on, their world was hit by a rock, has no hydrocarbons and is barely industrialized (like 50% of their population is peasant farmers). Worlds like it are a dime a dozen, and don't have much value unless you want to unproductively play God-King, and even then there are much easier targets.