src/time_machine/ports/storage.py

from __future__ import annotations
from typing import Protocol

from time_machine.domain.models import EncounterSession, SavedEncounter


class EncounterStore(Protocol):
    def save_encounter(self, encounter: EncounterSession) -> SavedEncounter:
        ...

    def load_encounter(self, encounter_id: str) -> EncounterSession:
        ...

    def list_saved(self, session_id: str) -> list[SavedEncounter]:
        ...