See Praxis from the role carrying the coordination cost.

You change roles in the same day. Keep the accepted output of one role openable by the next. See the founder path

You need a requirement to arrive in engineering with its business rule and acceptance still attached. See the product path

You need individual AI gains to become one delivery standard the team can follow. See the engineering path

You need a bounded package with decisions before you begin implementation. See the developer path

You need a Quality Harness review of a particular result, plus a separate planned private Platform for history within and across projects. See the quality path.