dashboards

Mismatch that diagnoses itself

A list of editable ledger lines and a gap against the bank total that the card actually diagnoses: if the difference divides by nine it hunts for the line whose two swapped digits explain it, if it doubles a line it flags a flipped sign, if it matches a line it flags a duplicate or an omission, and if it is a round multiple it suggests an extra zero. Each hypothesis is verified by substituting the line and checking the sum balances to the cent, so only the ones that really fit are shown, ranked by likelihood, and when none fit it says so.