from dataclasses import dataclass, field
from datetime import datetime, timezone
from typing import Any, Dict
import uuid
@dataclass
class BriefcaseEvent:
event_type: str decision_id: str
timestamp: datetime = field(default_factory=lambda: datetime.now(timezone.utc))
payload: Dict[str, Any] = field(default_factory=dict)
idempotency_key: str = field(default_factory=lambda: str(uuid.uuid4()))