Open POs are already visible on the dashboard. The /my-orders page now
fetches and displays only completed/closed statuses (MGR_APPROVED through
REJECTED) and is labelled 'Closed Purchase Orders' throughout.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Allow accounts to record partial/advance payments against a PO before
full delivery. A new PARTIALLY_PAID status tracks in-progress payment;
paidAmount accumulates across multiple markPaid calls. PO only closes
when both paidAmount >= totalAmount AND all line items are delivered.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
