Add barcode scanner, thermal receipt printing, and printer settings.

Register supports USB keyboard-wedge scanners with SKU lookup (local catalog
and CRM in retail mode). Sales get a thermal receipt print template (58/80mm)
with configurable header/footer, plus optional auto-print after cash sales.

Co-authored-by: Cursor <cursoragent@cursor.com>

app/Http/Controllers/Pos/SaleController.php

@@ -44,6 +44,18 @@ class SaleController extends Controller
         return view('pos.sales.show', compact('sale', 'invoiceUrl'));
     }
 
+    public function receipt(Request $request, PosSale $sale): View
+    {
+        $this->authorizeOwner($request, $sale);
+        $sale->load('lines', 'location');
+
+        return view('pos.receipts.print', [
+            'sale' => $sale,
+            'location' => $sale->location,
+            'autoprint' => $request->boolean('autoprint'),
+        ]);
+    }
+
     public function cancel(Request $request, PosSale $sale): RedirectResponse
     {
         $this->authorizeOwner($request, $sale);