feat(cashier): cashier-only cash operations, exchange PAN/denomination checks and Branch Cash Position

- Cash Exchange Entry: customer details with PAN (mandatory above Rs 50,000), cashier card,
  denomination-wise validation against the master and real-time impact preview.
- Inter-Cashier Transfer: sender fixed to the logged-in cashier, both sides' details and
  denomination holdings shown, blocked until both are allocated cash.
- Reconciliation, exchange and inter-cashier operate on the logged-in cashier only.
- New Branch Cash Position screen (vault + cashier drawers, denomination-wise).
- Customer search dialog shows the KYC PAN.
- Cashier menu cleanup: Excess/Closing report and Exchange Detail removed, nav compacted to one row.
- Reverse actions removed from cash transfer, settlement, exchange and inter-cashier.

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

src/app/cashier/reconciliation/reconciliation.component.ts

@@ -12,7 +12,6 @@ import { FormsModule } from '@angular/forms';
 import { MatIconModule } from '@angular/material/icon';
 import { MatSnackBar, MatSnackBarModule } from '@angular/material/snack-bar';
 import { MatFormFieldModule } from '@angular/material/form-field';
-import { MatSelectModule } from '@angular/material/select';
 import { MatInputModule } from '@angular/material/input';
 import { MatTabsModule } from '@angular/material/tabs';
 import { forkJoin, of } from 'rxjs';
@@ -58,7 +57,6 @@ interface ReconRecord {
     MatIconModule,
     MatSnackBarModule,
     MatFormFieldModule,
-    MatSelectModule,
     MatInputModule,
     MatTabsModule
   ]
@@ -67,9 +65,14 @@ export class ReconciliationComponent implements OnInit {
   private service = inject(CashierService);
   private snackBar = inject(MatSnackBar);
 
+  /**
+   * A reconciliation is the cashier's own count of their own drawer, so nobody else makes one and there is
+   * no cashier to pick: the screen is fixed to the logged-in cashier. The server refuses anything else.
+   */
+  ownCashierMissing = false;
+  ownTellerName = '';
+
   // ── Entry form ──
-  tellers: { id: number; name: string }[] = [];
-  cashiers: { id: number; label: string }[] = [];
   selectedTellerId: number | null = null;
   selectedCashierId: number | null = null;
   cashierName = '';
@@ -88,42 +91,28 @@ export class ReconciliationComponent implements OnInit {
   ngOnInit(): void {
     const d = businessToday();
     this.reconDate = `${d.getFullYear()}-${String(d.getMonth() + 1).padStart(2, '0')}-${String(d.getDate()).padStart(2, '0')}`;
-    this.service
-      .getTellers()
-      .pipe(catchError(() => of([] as any[])))
-      .subscribe((list) => {
-        this.tellers = (list || []).map((t: any) => ({ id: t.id, name: t.name }));
-        if (this.tellers.length === 1) {
-          this.onTellerSelect(this.tellers[0].id);
-        }
-      });
+    this.lockToOwnCashier();
     this.loadHistory();
   }
 
-  onTellerSelect(tellerId: number): void {
-    this.selectedTellerId = tellerId;
-    this.selectedCashierId = null;
-    this.cashierName = '';
-    this.cashiers = [];
-    this.rows = [];
-    if (!tellerId) return;
-    this.service
-      .getCashiersForTeller(tellerId)
-      .pipe(catchError(() => of({ cashiers: [] })))
-      .subscribe((r: any) => {
-        this.cashiers = (r?.cashiers || []).map((c: any) => ({ id: c.id, label: c.staffName }));
-        if (this.cashiers.length === 1) {
-          this.onCashierSelect(this.cashiers[0].id);
-        }
-      });
-  }
-
-  onCashierSelect(cashierId: number): void {
-    this.selectedCashierId = cashierId;
-    const c = this.cashiers.find((x) => x.id === cashierId);
-    this.cashierName = c ? c.label : '';
-    this.rows = [];
-    this.fetchExpected();
+  /** Take the logged-in cashier as the one being reconciled, with their counter for the record. */
+  private lockToOwnCashier(): void {
+    this.service.getCurrentCashierInfo().subscribe((info) => {
+      if (!info) {
+        this.ownCashierMissing = true;
+        return;
+      }
+      this.selectedCashierId = info.cashierId;
+      this.cashierName = info.cashierName;
+      this.service
+        .getInterCashierCashierSummary(info.cashierId, this.reconDate)
+        .pipe(catchError(() => of(null)))
+        .subscribe((r: any) => {
+          this.selectedTellerId = r?.tellerId ?? null;
+          this.ownTellerName = r?.tellerName || '';
+        });
+      this.fetchExpected();
+    });
   }
 
   fetchExpected(): void {