Break a workflow brief into manager-valid task mirrors while respecting Dopemux PM authority boundaries.
Use this skill after the brief is accepted and before research starts.
Emit:
<workflow-checkpoint phase="breakdown" status="complete" task="task-001" summary="Task mirror created" artifact="/abs/path/tasks/task-001/task.md" />
<workflow-checkpoint> XML, you MUST yield control back to the orchestrator.[STOP_TURN] to explicitly signal phase completion.