feat: add internal finance ledger for accounts, claims, and payroll

Keep booked income and expense separate from cash balances, with installments, recurring items, and reports.

Co-authored-by: Cursor <cursoragent@cursor.com>

apps/api/src/app.module.ts

@@ -33,6 +33,7 @@ import { MemoryModule } from './memory/memory.module';
 import { TahesabModule } from './integrations/tahesab/tahesab.module';
 import { InventoryModule } from './inventory/inventory.module';
 import { FinanceModule } from './finance/finance.module';
+import { TreasuryModule } from './treasury/treasury.module';
 import { PlatformModule } from './platform/platform.module';
 import { BillingModule } from './billing/billing.module';
 import { AuditLogsModule } from './audit-logs/audit-logs.module';
@@ -83,6 +84,7 @@ import { OutboundSmsModule } from './outbound-sms/outbound-sms.module';
     InvoicesModule,
     InventoryModule,
     FinanceModule,
+    TreasuryModule,
     SalesModule,
     TicketsModule,
     FaqModule,