Transactions from a CSV file - a bank's export, or one this application wrote on the Transactions page.
The first row names them: day, amount and category, and
account and note when there are any. Money going out is below zero;
a category not known yet is made.
day,amount,category,account,note 2026-10-02,-23.40,Groceries,Current account,Market 2026-10-25,3200,Salary,Current account,Salary