a86f20017d
- Relabel UPS 'Bill My Account' -> "Bill recipient's UPS account" with clear help (it bills the customer's own UPS account; $0 shipping line; falls back to Bill Shipper when the customer has no account on file). - Improve the customer 'UPS Account Number' field help (stored per-customer, auto-recalled at ship time for Bill Receiver). - Add ups_rest_documentation_type setting (No / UPS commercial invoice) on the UPS REST carrier, mirroring FedEx. Default 'invoice' preserves the existing auto-generate-on-international behaviour; gate require_invoice on it so it can be turned off. Surfaced on the UPS REST config page. Validated live on entech (UPS production): CA->US shipment generated the label + a 60KB commercial invoice PDF (country of origin auto = CA, HS code applied), then voided. Bill Receiver request confirmed accepted by UPS. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>