Prosecutors apparently bungled the job of notifying a defendant that they were seeking to forfeit $13,862 of his money as the proceeds of drug trafficking, a federal judge concluded Monday.In a written opinion, U.S. District Judge Matthew F. Kennelly did not rule whether prosecutors violated the due process clause when they obtained an order applying funds seized from Craig Venson to a forfeiture judgment entered against a co-defendant.But prosecutors so far have not shown that Venson had an adequate opportunity to …