Wrong annotation in ConfigModel for controlsystem

[TeresiaOlsson]

There is a bug in the ConfigModel for the controlsystem. It says debug_level: str = None which needs to be debug_level: str | None = None or Pydantic will give a validation error when None is given.

I can fix it myself, but the docstring says it should be an int. So is the docstring also wrong or the model should actually have int and not str? @gupichon which is correct?

class ConfigModel(BaseModel):
    """
    Configuration model for a Tango Control System.

    Attributes
    ----------
    name : str
        Name of the control system.
    tango_host : str
        Tango host URL. Default is the TANGO_HOST variable.
    debug_level : int
        Debug verbosity level.
    scalar_aggregator : str
        Aggregator module for scalar values. If none specified, writings and readings of sclar value are serialized.
    vector_aggregator : str
        Aggregator module for vecrors. If none specified, writings and readings of vector are serialized.
    timeout_ms : int
        Device timeout in milli seconds.
    """

    name: str
    tango_host: str | None = None
    debug_level: str = None
    lazy_devices: bool = True
    scalar_aggregator: str | None = "tango.pyaml.multi_attribute"
    vector_aggregator: str | None = None
    timeout_ms: int = 3000

[gupichon]

Actually, it is used to set the log level for the Python logging library, so it accepts both integers and strings. I have made the correction and updated the documentation accordingly.