Retrieves all line items associated with a specific work order for the authenticated crew user. Each line item represents a distinct task, material, or service included in the work order, containing detailed information such as the item description, quantity, unit price, and total cost. This endpoint allows crew members to view the complete breakdown of work to be performed and materials to be used, helping them understand the scope and components of their assigned work order. Crew users can only access line items for work orders assigned to them.