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| """Persistence contract. | |
| The surface is deliberately minimal at M0 (learners + attempts) and grows with | |
| real needs: review items and error profiles arrive with M3/M4, when the | |
| SQLite/Supabase implementations replace the in-memory one behind this same | |
| Protocol. | |
| """ | |
| from typing import Protocol, runtime_checkable | |
| from tutor.domain.models import Attempt, Learner | |
| class Repository(Protocol): | |
| async def save_learner(self, learner: Learner) -> None: ... | |
| async def get_learner(self, learner_id: str) -> Learner | None: ... | |
| async def save_attempt(self, attempt: Attempt) -> None: ... | |
| async def list_attempts(self, learner_id: str) -> list[Attempt]: ... | |