Frame POS checkout sheet for till operators.

Use operator-facing copy and merchant email so Card/MoMo checkout is for staff handing the screen to a customer, not self-serve buyers.

app/Http/Controllers/Pos/RegisterController.php

@@ -186,7 +186,7 @@ class RegisterController extends Controller
             return redirect()
                 ->route('pos.sales.show', $sale)
                 ->with('checkout_url', $result['checkout_url'])
-                ->with('success', 'Complete the payment to finish this sale.');
+                ->with('success', 'Payment sheet ready — hand the device to the customer for card or MoMo.');
         } catch (RuntimeException $e) {
             return back()->withInput()->with('error', $e->getMessage());
         }

app/Http/Controllers/Pos/TicketController.php

@@ -237,7 +237,7 @@ class TicketController extends Controller
             return redirect()
                 ->route('pos.tickets.show', $sale)
                 ->with('checkout_url', $result['checkout_url'])
-                ->with('success', 'Complete the payment to settle this ticket.');
+                ->with('success', 'Payment sheet ready — hand the device to the customer for card or MoMo.');
         } catch (RuntimeException $e) {
             return back()->with('error', $e->getMessage());
         }