feat: [shipment] 출하 상태변경 버튼에 can_ship 검증 UI 추가

- canShip=true일 때만 상태 변경 버튼 활성화
- canShip=false일 때 '출하 불가 (품질 검수 필요)' 비활성 버튼 표시

src/components/outbound/ShipmentManagement/ShipmentDetail.tsx

@@ -301,7 +301,7 @@ export function ShipmentDetail({ id }: ShipmentDetailProps) {
             <span className="hidden md:inline">삭제</span>
           </Button>
         )}
-        {STATUS_TRANSITIONS[detail.status] && (
+        {STATUS_TRANSITIONS[detail.status] && detail.canShip && (
           <Button
             variant="default"
             size="sm"
@@ -312,6 +312,17 @@ export function ShipmentDetail({ id }: ShipmentDetailProps) {
             <span className="hidden md:inline">{SHIPMENT_STATUS_LABELS[STATUS_TRANSITIONS[detail.status]!]}으로 변경</span>
           </Button>
         )}
+        {STATUS_TRANSITIONS[detail.status] && !detail.canShip && (
+          <Button
+            variant="outline"
+            size="sm"
+            disabled
+            className="text-muted-foreground"
+          >
+            <ArrowRight className="w-4 h-4 md:mr-2" />
+            <span className="hidden md:inline">출하 불가 (품질 검수 필요)</span>
+          </Button>
+        )}
       </>
     );
   }, [detail, canDelete, handleOpenStatusDialog]);