feat(clerk): add GL disbursement maker-checker flow

- Add ClerkDisbursementService for submit/approve/reject HTTP calls
- Add DisbursementRequestsComponent (manager inbox tab under checker tasks)
- Add DisbursementReviewComponent (manager approve/reject detail page)
- Add MyDisbursementRequestsComponent (clerk's own disbursement history)
- Add 'My Disbursements' nav tab to clerk shell navigation header
- Wire routes in cashier-routing and tasks-routing modules
- Add 'My Disbursements' button to transaction-entry clerk footer
- Include accountName in creditEntries payload for manager review display

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/app/cashier/cashier-routing.module.ts

@@ -54,6 +54,14 @@ const routes: Routes = [
           loadComponent: () => import('../clerk/my-requests/my-requests.component').then((m) => m.MyRequestsComponent),
           data: { title: 'My Withdrawal Requests', breadcrumb: 'My Withdrawal Requests' }
         },
+        {
+          path: 'my-disbursement-requests',
+          loadComponent: () =>
+            import('../clerk/my-disbursement-requests/my-disbursement-requests.component').then(
+              (m) => m.MyDisbursementRequestsComponent
+            ),
+          data: { title: 'My Disbursement Requests', breadcrumb: 'My Disbursement Requests' }
+        },
         {
           path: 'account-facilities',
           loadComponent: () =>