"""Public contract for the system_notif plugin.

Exposes only the symbols that other builtins plugins need.
Importers should use::

    from app.plugins.builtins.contracts import get_contract
    sn = get_contract("system_notif")
    if sn:
        # use sn.SystemParticipantHandler

instead of importing from internal modules directly.
"""

from __future__ import annotations

from app.plugins.builtins.contracts import get_contract_registry
from app.plugins.builtins.system_notif.participant_handler import SystemParticipantHandler


class SystemNotifContract:
    """Public API surface for the system_notif plugin."""

    contract_name = "system_notif"

    # ─── participant handler ───
    SystemParticipantHandler = SystemParticipantHandler


# ─── self-registration ───

_contract = SystemNotifContract()
get_contract_registry().register("system_notif", _contract)


__all__ = [
    "SystemNotifContract",
    "SystemParticipantHandler",
]