Display invoice history during approval screen (To Do)

Approvers in Klippa can’t currently see the invoice history of a supplier while reviewing a new invoice. This means important context (like whether previous invoices were always €90 and the current one is €100) is missing.

Adding invoice history (e.g. the last 5 invoices from the relationship) to the approval screen (To Do) would make checks faster, more transparent, and reduce manual searching in multiple tabs. This simple UX improvement would directly increase efficiency and decision quality.