Exception handler for Wave invoice reminders. Use this only when Wave's native invoice reminder automation is insufficient: the invoice customer has no primary email and the owner supplies an exception recipient, the reminder needs an additional recipient, or the owner provides a specific exception note. The recipe re-reads the business and invoice live from Wave, confirms the invoice still has an amount due, sends exactly one attended Wave invoice email, links the invoice to the customer, and seeds data.shared exception-watch state so wave-invoice-reminder-exception-watcher can close the loop when Wave shows the invoice paid or resolved. It never creates invoices, edits invoices, records payments, changes customers, deletes records, or calls arbitrary GraphQL.

Scheduled adopter for Wave invoice reminder exception rows in data.shared. It reads the exception-watch ledger, re-reads one watched invoice from Wave, and marks the shared row responded_closed when the source of truth says the invoice is paid or has no amount due. It preserves the origin recipe id and does not send email, notify customers, record payments, edit invoices, change customers, or call arbitrary GraphQL.