Currency & exchange rates — Exchange rates, and why you supply them

Once a workspace records several currencies, Settings gains an Exchange rates table. You enter the rates: a pair, a number, and the date it took effect — “1 GBP = 1.27 USD from 3 Aug 2026”. RowFold does not fetch rates from a market feed, on purpose. A live rate moves every second, carries a spread the product cannot see, and would make a figure on your screen change with nobody editing anything. The rate you booked at is a fact; a rate scraped this morning is not. Add a newer rate for the same pair whenever it moves. Rates are kept by date, so the old ones stay true for the records they applied to. A rate entered for the same pair on the same day replaces the earlier one — that is a correction, not a second fact.