Derives the author from the most recent EDITS_REQUESTED / REJECTED /
APPROVED action that carries a note. PO detail banner now shows 'Note from
[name]', edit-page banner shows 'Edits requested by [name]', and the
closed-orders list prefixes the truncated note with the author's name.
No schema changes required - uses the already-fetched actions with actor.
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>
