Account Invoice Confirm Popup

This module changes the invoice screens so that validating an invoice is no longer a single click. When a user presses the button that posts/validates an invoice, Odoo first shows a confirmation popup with the question "Do you want to confirm this invoice ?". The user can then confirm or cancel the action.

The change applies to both customer invoices and supplier invoices, because the module updates the two standard invoice form views (account.invoice_form and account.invoice_supplier_form) on the account.invoice model. It targets the standard validation button (action_invoice_open), so the popup appears wherever that button is used on those forms.

No new menus, reports, models, fields, checks or automatic computations are added. The module only adds this safety question, which helps prevent accidental validation of an invoice. It depends on the standard Accounting app and does not change any accounting logic or data.