fix: capture and persist target object names for delete, outbound, and borrow operations in audit logs

inventory-backend/app/services/inbound/product_service.py

@@ -252,9 +252,12 @@ class ProductInboundService:
         try:
             stock = StockProduct.query.get(stock_id)
             if stock:
+                # 提前获取物料名称用于审计日志
+                material_name = stock.material_name
                 db.session.delete(stock)
                 db.session.commit()
-            return True
+                return material_name
+            return None
         except Exception as e:
             db.session.rollback()
             raise e