feat(inbound): handle batch duplication gracefully, support spec search, and auto-fill historical locations

inventory-backend/app/api/v1/inbound/product.py

@@ -145,7 +145,15 @@ def submit():
             for field in list(data.keys()):
                 perm_code = field_to_perm.get(field)
                 if perm_code and perm_code not in user_permissions: data.pop(field, None)
-        new_stock = ProductInboundService.handle_inbound(data)
+
+        result = ProductInboundService.handle_inbound(data)
+
+        # 检查是否返回了业务校验错误
+        if isinstance(result, dict) and result.get('error'):
+            return jsonify({"code": 400, "msg": result['error']}), 400
+
+        new_stock = result
+
         return jsonify({"code": 200, "msg": "入库成功", "data": new_stock.to_dict()})
     except Exception as e:
         traceback.print_exc()