Bulk Actions on Invoices (Status, Delete, Download)

Select multiple invoices from the invoices list and apply an action to all of them at once, rather than opening each one individually. Priority actions: update status (e.g. mark as sent, paid, cancelled), download and delete. Useful for cleaning up old drafts, closing out a batch of overdue invoices, or general list housekeeping when there are a lot of invoices to get through.