As a production planner, I want to schedule a production run directly from a confirmed sales order so I do not re-key part numbers and quantities into the scheduler.
Acceptance: Given a sales order in status “confirmed,” when I click “Schedule run,” then the scheduler creates a draft run pre-populated with order line items, customer, requested ship date, and estimated cycle time pulled from the routing master. The draft run cannot be saved until a work-center assignment exists for every line item.