fix(ledger): an order's debt follows its status, as legacy recomputed it (ACC-03)

Legacy never posted order debt; updateRemain recomputed it as
SUM(orders.input) WHERE sts > 4. The port posted it once on entering
DELIVERED_TO_AGENT, guarded on deliveredAt, which:
- posted it twice when an order reached that status again
- posted nothing for an order sent straight to DELIVERED_TO_CUSTOMER
- kept it after a rollback or cancellation

syncOrderDebt compares what the order should owe with the confirmed
ORDER_STOCK entries on it and posts only the difference (append-only,
idempotent). Status removal runs it too, so removing «تحویل به نماینده»
is allowed again, as in legacy. Existing data: 0 orders out of line.

Owner approval: 2026-10-08.

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

apps/api/src/modules/admin-orders/admin-orders.module.ts

@@ -1,11 +1,12 @@
 import { Module } from '@nestjs/common';
 import { PrismaModule } from '../../prisma/prisma.module';
 import { OrdersModule } from '../orders/orders.module';
+import { AccountingModule } from '../accounting/accounting.module';
 import { AdminOrdersController } from './admin-orders.controller';
 import { AdminOrdersService } from './admin-orders.service';
 
 @Module({
-  imports: [PrismaModule, OrdersModule],
+  imports: [PrismaModule, OrdersModule, AccountingModule],
   controllers: [AdminOrdersController],
   providers: [AdminOrdersService],
 })