from __future__ import annotations

from .transport_clients import TransportClientsApiMixin
from .transport_policy import TransportPolicyApiMixin
from .transport_singbox import TransportSingBoxApiMixin


class TransportApiMixin(
    TransportClientsApiMixin,
    TransportPolicyApiMixin,
    TransportSingBoxApiMixin,
):
    """Facade mixin for transport domain API.

    Kept for backward compatibility with existing `from api.transport import TransportApiMixin`
    imports while implementation is split by subdomain.
    """

    pass