feat(nas): archive issued-order PDFs to NAS_ORDERS; split NAS_FINANCIALS_PATH into NAS_INVOICES + NAS_ORDERS

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

src/admin/pages/IssuedOrderDetail.tsx

@@ -775,6 +775,18 @@ export default function IssuedOrderDetail() {
       alert.success(
         isEdit ? "Objednávka byla uložena" : "Objednávka byla vytvořena",
       );
+
+      // Archive the PDF to NAS for any non-draft order (create-as-sent,
+      // finalize draft→sent, or editing an already-live order). A draft has no
+      // PO number, so it is skipped (the backend also guards on po_number).
+      // Fire-and-forget: never block the success toast or navigation.
+      const recordId = isEdit ? id : data.id;
+      const effectiveStatus = targetStatus ?? form.status;
+      if (recordId && effectiveStatus !== "draft") {
+        apiFetch(`${API_BASE}/issued-orders-pdf/${recordId}?save=1`).catch(
+          () => {},
+        );
+      }
       // Reflect the just-saved status locally. On CREATE the component is reused
       // for the redirect to the new order's detail and the one-shot edit-mode
       // hydration won't re-run (dataReady stays true), so without this the page