I contribute to an open source spec based project management tool. I spend about a day back and forth iterating on a spec, using ai to refine the spec itself. Sometimes feeding it in and out of Claude/gemini telling each other where the feedback has come from. The spec is the value. Using the ai pm tool I break it down into n tasks and sub tasks and dependencies. I then trigger Claude in teams mode to accomplish the project. It can be left alone over night. I wake up in the morning with n prs merged.