Funds and reconciling
On money and accounts, a pretty UI comes last. Who made each movement, on what basis, and whether you can replay by time, account, and operator—if those three fail, extra features stay unlaunched. We fix account or ledger definitions, debit/credit, day-cut, reconciling rules, and rights grades first. Bank statements, payment channels, and the business ledger match daily; unmatched items enter a difference queue with a handler and a checker—not three Excel files overnight at month-end. Amount and account actions dual-control by threshold; sensitive fields mask; logs sit apart and cannot be edited.