fix(orders): 환불 라인 UPDATE — WHERE kind IN 에 REFUND 추가 (단가 저장 실패 fix)

src/app/api/m/orders/lines/save/route.ts

@@ -106,7 +106,7 @@ export async function POST(req: NextRequest) {
              total_amount   = $7,
              kind           = $8,
              extra_label    = $2
-           WHERE objid = $1 AND kind IN ('DELIVERY','CHARTER')`,
+           WHERE objid = $1 AND kind IN ('DELIVERY','CHARTER','REFUND')`,
           [ln.objid, label, unitPrice, qty,
            calc.supplyAmount, calc.vatAmount, calc.totalAmount, ln.kind]
         );