Perform a complete monthly financial reconciliation - review all transactions, match invoices, check outstanding payments, and prepare for tax filing. Use when the user wants to close the month, do monthly bookkeeping, or perform a Monatsabschluss.

执行完整的月度财务对账，审核所有交易、核对发票、检查未付款项，并为报税做好准备。适用于用户希望结账月度、进行月度记账或完成月度结算时。