feat(admin): D16 (b)(c) — Excel order-item report, document-confirm SMS, %name in bulk SMS

Finished from a parallel session that expired (owner: «بساز»).

- RPT-01: GET admin/report/order-items — legacy report/order_item's
  32-column Excel (order items, one row per unit, plus financial
  documents), RTL, Jalali dates. The «گزارش تجمیعی» screen gets
  «دریافت فایل اکسل». Review fixes:
  - weight: computedWeightGrams is already one unit's weight; legacy
    divided it by qty again, under-reporting «بدهکار» on multi-unit
    lines. Not repeated.
  - «درصد»: the final percent (wage − discount), as legacy.
  - dates: the end date covers its whole day; a bad date is a 400.
- SMS-01: confirming or rejecting a financial document texts the customer,
  as legacy CashController::toggleConfiremCash.
- SMS-02: bulk SMS substitutes %name per recipient and is actually sent
  through the configured gateway (D26 relay), no longer only logged.
- Docs: 01-ADMIN-MATRIX and D16-BC-GAP-SUMMARY.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

apps/api/src/modules/admin-documents/admin-documents.service.ts

@@ -3,6 +3,7 @@ import { LedgerCurrency, LedgerDirection, LedgerSourceType, Prisma } from '@pris
 import { PrismaService } from '../../prisma/prisma.service';
 import { TableService } from '../admin-table/table.service';
 import { LedgerService } from '../accounting/ledger.service';
+import { SmsService } from '../sms/sms.service';
 import type { TableQueryDto } from '../admin-table/table-query.dto';
 
 /**
@@ -62,6 +63,7 @@ export class AdminDocumentsService {
     private readonly prisma: PrismaService,
     private readonly table: TableService,
     private readonly ledger: LedgerService,
+    private readonly sms: SmsService,
   ) {}
 
   private static readonly ALLOWED = [
@@ -313,6 +315,7 @@ export class AdminDocumentsService {
 
     if (!e.confirmed) {
       await this.ledger.confirmEntry(id, adminUserId);
+      this.notifyDocumentConfirm(e.customerId, true);
       return this.findOne(id);
     }
 
@@ -335,9 +338,24 @@ export class AdminDocumentsService {
       });
     });
 
+    this.notifyDocumentConfirm(e.customerId, false);
     return this.findOne(id);
   }
 
+  // Legacy CashController::toggleConfiremCash sent an SMS on both outcomes.
+  private notifyDocumentConfirm(customerId: string, confirmed: boolean) {
+    const text = confirmed
+      ? 'هنزا گلد\nسند مالی شما توسط مدیر سیستم تایید شد.'
+      : 'هنزا گلد\nسند مالی شما توسط مدیر سیستم رد شد.';
+
+    this.prisma.customer
+      .findUnique({ where: { id: customerId }, select: { mobile: true } })
+      .then((c) => {
+        if (c) this.sms.send(c.mobile, text);
+      })
+      .catch(() => {});
+  }
+
   /**
    * Legacy `DELETE cash/{id}`.
    *