Comment by kelnos
Oof, I don't think I could be successful at a place like that. Only 6-ish hardcore-productive hours of coding per week would make me sad. I would want to invert your arrangement: I'm in the office Monday to answer questions and interact with people, and Tues-Fri I'm at home doing deep work.
(I know that's unrealistic. But that would be my ideal.)
By this point the project was out of primary development and moving toward long term maintenance. My main value was in making sure everyone there understood how certificates and code signing worked, and that nobody made any dumb architectural decisions.