feat(shares): route dividend cash claims through cashier token disbursement

Cash claims now require a token at claim submission; a cashier redeems
it at Transaction Entry to record physical hand-over, mirroring the
existing clerk-withdrawal-request flow -- no double-disbursement, and
the manager never hands over cash directly at approval time.

Also: dividend-claim tokens fall back through the same TOK. NO. lookup
used for withdrawal requests, silenced against the global error
interceptor since the caller already handles every outcome; the account
summary card now shows "Dividend Claim" instead of a misleading "A/c
Savings" label when resolving one; and cash amounts are floored to
whole rupees client-side to match cash's whole-rupee denominations.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

src/app/clerk/dividend-dashboard/dividend-dashboard.component.html

@@ -283,6 +283,12 @@
                     <span>Cash</span>
                     <input type="number" [(ngModel)]="claimCashAmount[l.lockId]" min="0" step="0.01" />
                   </label>
+                  @if (claimCashAmount[l.lockId] > 0) {
+                    <label class="inv-form-field">
+                      <span>Token No. (for cashier hand-over)</span>
+                      <input type="text" [(ngModel)]="claimTokNo[l.lockId]" />
+                    </label>
+                  }
                   <div class="dd-apply-panel-total">
                     Total: {{ claimTotal(l) | number: '1.2-2' }} / {{ l.amount | number: '1.2-2' }}
                   </div>
@@ -353,7 +359,12 @@
               }}
             </td>
             <td class="num">{{ req.savings_apply_amount > 0 ? (req.savings_apply_amount | number: '1.2-2') : '—' }}</td>
-            <td class="num">{{ req.cash_apply_amount > 0 ? (req.cash_apply_amount | number: '1.2-2') : '—' }}</td>
+            <td class="num">
+              {{ req.cash_apply_amount > 0 ? (req.cash_apply_amount | number: '1.2-2') : '—' }}
+              @if (req.cash_apply_amount > 0 && req.tok_no) {
+                <div class="pg-empty-inline">Tok: {{ req.tok_no }}</div>
+              }
+            </td>
             <td class="num">{{ req.locked_amount | number: '1.2-2' }}</td>
             <td>
               @if (req.has_overdue_loan) {