Refined stories handed over with the why, not just the what
Walking specified work with the delivery team until it is genuinely buildable — stories questioned, split and estimated in refinement, the ambiguities and dependencies that surface either resolved or named as blocking, and a handoff that carries the problem, the metric and the hard parts across. The work runs from a prep sheet of the questions the team will ask, through the session itself and a record of what it decided, to a Handoff Pack with a brief and a walkthrough that ends in questions the team answers back.
Its purpose is to start the work with shared understanding rather than a document thrown over the wall. Readiness is treated as a guideline, not a gate: only an outside dependency or an unanswered question that changes what gets built holds a story back.