"The pre-assembled components from the factory? THAT is on Salsa."
I take it you have read the Dealer Agreement. It is a legal and binding document outlining the relationship between the dealer and the supplier. Within that document Specialized, Giant, Trek, Ritchey, Cannondale, and Raleigh (these companies are the ones I have direct knowledge) specify the dealer is responsible for final assembly of the bike, which includes checking for safe operation. I must assume it is the same with Salsa as it seems to be an industry standard agreement.
Of course one can pursue the company legally, however ultimately it will end up in the lap of the dealer as it is, in the end, their responsibility. As for cable rub this is a defect of what sort? How do we define the category of the defect? Paint defect? Lack of forethought defect?
Mr,Grumpy, chill out and go for a ride on your new bike!