A record kept day by day, in the voice of the one who kept it. A journal holds what happened and how it was met.
Latin diurnalis (daily), from dies (day), via Old French jurnal (a day, a day's travel); a record kept day by day, in the voice of the one who kept it.
Every repo in this house keeps one of its own, tracked and never ignored, split by what it holds — what an agent learned, what the work did, what a proof found — so a day's account is never gathered somewhere else.