5232b14cdf
Invoice PDFs (§14 UStG line items, tenant-configurable VAT rate) are now generated at checkout and attached to the confirmation email, plus available on demand from the order-detail page. Payload-side, orders now also email the customer on shipped/cancelled/return_requested/returned, with Stornorechnung/Gutschrift correction PDFs attached for the latter two so the original invoice's immutable number stays honest.