fix(WEB): 수주/작업지시 담당자 표시 누락 수정

- transformApiToFrontend: options.manager_name 우선 참조 (폴백: client.manager_name)
- transformFrontendToApi: options에 manager_name 전송 추가
- 작업지시 상세: salesOrderWriter에 options.manager_name 우선 표시

src/components/production/WorkOrders/types.ts

@@ -449,7 +449,7 @@ export function transformApiToFrontend(api: WorkOrderApi): WorkOrder {
     priority: priorityValue,
     priorityLabel: getPriorityLabel(priorityValue),
     salesOrderDate: api.sales_order?.received_at?.split('T')[0] || api.sales_order?.created_at?.split('T')[0] || formatDate(api.created_at),
-    salesOrderWriter: api.sales_order?.writer?.name || '-',
+    salesOrderWriter: api.sales_order?.options?.manager_name || api.sales_order?.writer?.name || '-',
     clientContact: api.sales_order?.client_contact || '-',
     shutterCount: api.sales_order?.root_nodes_count || null,
     department: api.process?.department || api.team?.name || '-',