Class AIUsageQuota

backend/src/users/models.py:32–41

class AIUsageQuota(SQLModel, table=True):
    id: uuid.UUID | None = Field(default_factory=uuid.uuid4, primary_key=True)
    user_id: uuid.UUID = Field(
        foreign_key="user.id", index=True, unique=True, ondelete="CASCADE"
    )
    usage_count: int = Field(default=0)
    last_reset_time: datetime = Field(
        default_factory=lambda: datetime.now(timezone.utc)
    )
    user: "User" = Relationship(back_populates="ai_usage_quota")