It isn't much different to how it works with a team. You have an architecture who understands the broader landscape, you have developers who implement certain subsystems, you have a testing strategy, you have communication, teaching, management. The only difference now is that I can do all this with my team being LLMs/agents, while I focus on the leadership stuff: docs, designs, tests, direction, vision.
I do miss coding, but it just isn't worth it anymore.