feat(cashier): morning opening balance panel across settlement, reconciliation, position & history

- Cash Settlement form: morning panel (denomination pills) + Morning column in denomination table
- Reconciliation form: morning panel (denomination pills) + Morning column in denomination table
- Cashier Position Report: Morning vs Current comparison bar + Morning column (single-cashier mode)
- Cash History – Settlement detail panel: Morning Received vs Settled comparison bar + Morning column
- Cash History – denomination Notes/Coins separation in detail panel for all transaction types
- CashierService: added getCashierMorningBalance() calling GET /cashreports/cashier-morning
- All morning data loaded via forkJoin alongside existing API calls (no extra loading states)

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

src/app/cashier/cash-transfer/cash-transfer.component.ts

@@ -171,8 +171,15 @@ export class CashTransferComponent implements OnInit {
         .map((d) => ({ denominationId: d.id, denominationValue: d.value, count: this.countFor(d) }))
     };
     this.service.createCashTransfer(payload).subscribe({
-      next: () => {
-        this.snackBar.open('Cash transfer recorded', 'Close', { duration: 3000 });
+      next: (res: any) => {
+        if (res?.glWarning) {
+          this.snackBar.open(`Transfer saved (GL warning: ${res.glWarning})`, 'Close', {
+            duration: 8000,
+            panelClass: ['snack-warn']
+          });
+        } else {
+          this.snackBar.open('Cash transfer recorded', 'Close', { duration: 3000 });
+        }
         this.clear();
         this.note = '';
         this.fromParty = '';