fix: [stocks] 재고생산 수량을 정수로 표시

- API decimal:4 캐스트 값을 Math.floor(Number())로 정수 변환
- 금액 필드도 Number()로 안전한 형변환 적용

src/components/stocks/actions.ts

@@ -174,7 +174,7 @@ function transformApiToFrontend(apiData: ApiStockOrder): StockOrder {
     statusCode: apiData.status_code,
     status: API_TO_FRONTEND_STATUS[apiData.status_code] || 'draft',
     siteName: apiData.site_name || '재고생산',
-    quantity: apiData.quantity,
+    quantity: Math.floor(Number(apiData.quantity) || 0),
     memo: apiData.memo || '',
     remarks: apiData.remarks || '',
     productionReason: apiData.options?.production_reason || '',
@@ -194,12 +194,12 @@ function transformItemApiToFrontend(apiItem: ApiStockOrderItem): StockOrderItem
     itemCode: apiItem.item_code || '',
     itemName: apiItem.item_name,
     specification: apiItem.specification || '',
-    quantity: apiItem.quantity,
+    quantity: Math.floor(Number(apiItem.quantity) || 0),
     unit: apiItem.unit || 'EA',
-    unitPrice: apiItem.unit_price,
-    supplyAmount: apiItem.supply_amount,
-    taxAmount: apiItem.tax_amount,
-    totalAmount: apiItem.total_amount,
+    unitPrice: Number(apiItem.unit_price) || 0,
+    supplyAmount: Number(apiItem.supply_amount) || 0,
+    taxAmount: Number(apiItem.tax_amount) || 0,
+    totalAmount: Number(apiItem.total_amount) || 0,
     sortOrder: apiItem.sort_order,
   };
 }