I think the PB screwed up by installing the chlorinator and doesn't want to admit it because the EZ touch panel that he had here was not the one for the saltwater system either. I have caught an error on every single step of the build process so far so it would not surprise me if they thought I was doing a chlorine pool by mistake.Your PB is screwing with you. There was no reason to install an inline chlorinator to use for the first 30 days. A floater could easily be used for pucks when necessary. And he provided no space to install a SWG.
In addition having two valves to turn for the heater bypass makes it error prone and easily to misset one valve and damage your equipment if you mispositioned them. Described in this wiki is how a heater bypass is done with one 3 way valve and a check valve.
I would tell him to redo the plumbing between the filter and the return, remove the chlorinator, use a simplier one valve heater bypass, and give you a straight run after the heater where a SWG can be installed.