fix: OTC 라벨 약품 검색 API 오류 수정

- StockQty 컬럼 제거 (CD_GOODS 테이블에 없음)

backend/app.py

@@ -5600,7 +5600,7 @@ def api_search_mssql_drug():
         # 바코드 또는 이름으로 검색
         sql = text("""
             SELECT TOP 20 
-                DrugCode, Barcode, GoodsName, Saleprice, StockQty
+                DrugCode, Barcode, GoodsName, Saleprice
             FROM CD_GOODS
             WHERE (Barcode LIKE :query OR GoodsName LIKE :query)
               AND Barcode IS NOT NULL
@@ -5621,8 +5621,7 @@ def api_search_mssql_drug():
                 'drug_code': row.DrugCode,
                 'barcode': row.Barcode,
                 'goods_name': row.GoodsName,
-                'sale_price': float(row.Saleprice or 0),
-                'stock_qty': int(row.StockQty or 0)
+                'sale_price': float(row.Saleprice or 0)
             })
         
         return jsonify({