I'm doing a PhD in sociology of work (I have a background in software development) and want to do such a study on software development with AI, but as you say it's quite hard to find a good setting, because it's hard to operationalise quality.

I have been thinking of measuring it along these lines perhaps... https://www.gitclear.com/the_ai_code_quality_maintainability...

But they have a closed sourced software so I would have to find or create an open one in that case.

Happy to hear if you have any ideas on study design!