[Feature vermeer-python-client] TaskInfo does not parse error_message field from task response

[raled573343]

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Feature Description (功能描述)

The Vermeer REST API already returns an error_message field in the task response when a task fails (e.g., for load or compute tasks). However, the Python client (vermeer-python-client) does not parse this field. The TaskInfo class ignores error_message, making it difficult for users to understand why a task failed without manually inspecting the raw HTTP response.
vermeer-python-client/src/pyvermeer/structure/task_data.py

class TaskInfo:
    """task info"""

    def __init__(self, dic):
        """init"""
        self.__id = dic.get("id", 0)
        self.__status = dic.get("status", "")
        self.__state = dic.get("state", "")
        self.__create_user = dic.get("create_user", "")
        self.__create_type = dic.get("create_type", "")
        self.__create_time = parse_vermeer_time(dic.get("create_time", ""))
        self.__start_time = parse_vermeer_time(dic.get("start_time", ""))
        self.__update_time = parse_vermeer_time(dic.get("update_time", ""))
        self.__graph_name = dic.get("graph_name", "")
        self.__space_name = dic.get("space_name", "")
        self.__type = dic.get("type", "")
        self.__params = dic.get("params", {})
        self.__workers = [TaskWorker(w) for w in dic.get("workers", [])]
        self.__error_message = dic.get("error_message", ""),

    def to_dict(self) -> dict:
        """to dict"""
        return {
            "id": self.__id,
            "status": self.__status,
            "state": self.__state,
            "create_user": self.__create_user,
            "create_type": self.__create_type,
            "create_time": self.__create_time.strftime("%Y-%m-%d %H:%M:%S") if self.__start_time else "",
            "start_time": self.__start_time.strftime("%Y-%m-%d %H:%M:%S") if self.__start_time else "",
            "update_time": self.__update_time.strftime("%Y-%m-%d %H:%M:%S") if self.__update_time else "",
            "graph_name": self.__graph_name,
            "space_name": self.__space_name,
            "type": self.__type,
            "params": self.__params,
            "workers": [w.to_dict() for w in self.__workers],
            "error_message": self.__error_message,
        }

Are you willing to submit a PR?

• Yes I am willing to submit a PR!

Code of Conduct

• I agree to follow this project's Code of Conduct