feat(documents): persist & expose selected_custom_fields in services

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

src/services/issued-orders.service.ts

@@ -9,6 +9,10 @@ import {
   isIssuedOrderNumberTaken,
 } from "./numbering.service";
 import { nasOrdersManager } from "./nas-financials-manager";
+import {
+  encodeSelectedCustomFields,
+  parseSelectedCustomFields,
+} from "../utils/custom-fields";
 
 export interface IssuedOrderItemInput {
   description?: string | null;
@@ -253,6 +257,9 @@ export async function getIssuedOrder(id: number) {
     supplier: order.suppliers,
     supplier_name: order.suppliers?.name || null,
     valid_transitions: VALID_TRANSITIONS[order.status as string] || [],
+    selected_custom_fields: parseSelectedCustomFields(
+      rest.selected_custom_fields,
+    ),
   };
 }
 
@@ -319,6 +326,9 @@ export async function createIssuedOrder(body: IssuedOrderInput) {
           internal_notes: body.internal_notes
             ? String(body.internal_notes)
             : null,
+          selected_custom_fields: encodeSelectedCustomFields(
+            body.selected_custom_fields,
+          ),
         },
       });
 
@@ -424,6 +434,10 @@ export async function updateIssuedOrder(id: number, body: IssuedOrderInput) {
       data.internal_notes = body.internal_notes
         ? String(body.internal_notes)
         : null;
+    if (body.selected_custom_fields !== undefined)
+      data.selected_custom_fields = encodeSelectedCustomFields(
+        body.selected_custom_fields,
+      );
   }
 
   if (body.status !== undefined) data.status = String(body.status);