feat(cashier+checker): add cashier deposit maker-checker flow and voucher system

- Add cashier deposit service and submit flow via maker-checker
- New CashierDepositService: submit, approve, reject, list endpoints
- Transaction-entry: cashier SD deposit goes to deposit-requests instead of direct credit
- Checker inbox: new Deposit Requests tab with approve/reject review dialog
- Cashier nav: My Deposit Requests tracking page
- Withdrawal requests: show voucher_no from backend instead of JS-padded id
- clerk-withdrawal.service: disburse denominationData accepts null for non-cash
- Role-based checker enforcement: only manager/head-cashier can approve/reject
- Maker cannot approve own request (self-approval blocked at backend)
- Denomination total validation: breakdown must match transaction amount

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

src/app/cashier/transaction-entry/transaction-entry.component.html

@@ -1415,9 +1415,9 @@
         class="te-confirm-header"
         [class.te-confirm-header--deposit]="confirmData.type === 'DEPOSIT'"
         [class.te-confirm-header--withdrawal]="confirmData.type === 'WITHDRAWAL'"
-        [class.te-confirm-header--disbursement]="confirmData.isDisbursement"
+        [class.te-confirm-header--disbursement]="confirmData.isDisbursement || confirmData.isDepositRequest"
       >
-        <span class="te-confirm-icon">{{ confirmData.type === 'DEPOSIT' ? '⬇' : '⬆' }}</span>
+        <span class="te-confirm-icon">{{ confirmData.type === 'WITHDRAWAL' ? '⬆' : '⬇' }}</span>
         <span>Confirm {{ confirmData.isDisbursement ? 'CASH DISBURSEMENT' : confirmData.type }}</span>
       </div>
       <div class="te-confirm-body">
@@ -1465,6 +1465,25 @@
               >Balance already deducted at manager approval — no further deduction</span
             >
           </div>
+        } @else if (confirmData.isDepositRequest) {
+          <!-- Maker-checker deposit: balance credits only after manager approval -->
+          <div class="te-confirm-row">
+            <span class="te-confirm-label">Current Balance</span>
+            <span class="te-confirm-val"
+              >{{ confirmData.symbol }}{{ confirmData.currentBalance | number: '1.2-2' }}</span
+            >
+          </div>
+          <div class="te-confirm-row te-confirm-row--amount">
+            <span class="te-confirm-label">Deposit Amount</span>
+            <span class="te-confirm-val te-cr"
+              >+{{ confirmData.symbol }}{{ confirmData.amount | number: '1.2-2' }}</span
+            >
+          </div>
+          <div class="te-confirm-row te-confirm-disbursed-note">
+            <span class="te-confirm-disbursed-badge"
+              >Sent for manager approval — balance will be credited only after approval</span
+            >
+          </div>
         } @else {
           <div class="te-confirm-row">
             <span class="te-confirm-label">Current Balance</span
@@ -1499,7 +1518,13 @@
         <button class="te-btn" type="button" (click)="showConfirmDialog = false">Cancel</button>
         <button class="te-btn te-btn--primary" type="button" [disabled]="saving" (click)="confirmSubmit()">
           {{
-            saving ? 'Posting…' : confirmData.isDisbursement ? 'Confirm DISBURSEMENT' : 'Confirm ' + confirmData.type
+            saving
+              ? 'Posting…'
+              : confirmData.isDisbursement
+                ? 'Confirm DISBURSEMENT'
+                : confirmData.isDepositRequest
+                  ? 'Submit for Approval'
+                  : 'Confirm ' + confirmData.type
           }}
         </button>
       </div>