[joesmo]

It's clear that their stack is not PHP from honestfeedback's comment about not being familiar with composer (though really composer does not require sudo if used properly). From briefly glancing at the code, I also think it looks fine and for a one to two hour project, IMO, is way more than any company should expect. I agree that knowing the answers to these questions is crucial regardless of coding tests, but an interviewer who can't judge code that's not in a familiar format (MVC, framework, etc.) is a junior developer and shouldn't be judging any code.

I hope the OP finds a job someplace where his skills will be appreciated, a place that doesn't ask for free work. Sounds to me that they were really too lazy to look at the whole application or didn't have the technical know-how to understand an application written in frameworks they were not familiar with.