message

type BroadcastMessage struct {
	ID              ID
	SenderID        user.ID
	SenderNameEnc   string
	SenderPublicKey string
	Body            string
	Envelopes       map[string]string
	SentAt          time.Time
}

type BroadcastRepository interface {
	Save(ctx context.Context, msg BroadcastMessage) error
	ListRecent(ctx context.Context, limit int) ([]BroadcastMessage, error)
}

type ID string