Present Paystack checkout in a responsive mobile sheet and desktop modal.

Standardize customer-facing Ladill Pay checkout shells across products, open them on all viewports, and escape iframe callbacks back to the product flow.

tests/Feature/MiniPaymentCheckoutTest.php

@@ -14,7 +14,7 @@ class MiniPaymentCheckoutTest extends TestCase
 {
     use RefreshDatabase;
 
-    public function test_payment_landing_shows_paystack_branding_not_momo(): void
+    public function test_payment_landing_shows_secure_checkout_not_momo(): void
     {
         $user = User::create([
             'public_id' => (string) Str::uuid(),
@@ -40,9 +40,12 @@ class MiniPaymentCheckoutTest extends TestCase
         $this->withHeader(\App\Support\LadillLink::INTERNAL_HEADER, '1')
             ->get('/q/'.$qr->short_code)
             ->assertOk()
-            ->assertSee('Secured by Paystack. Powered by Ladill Pay', false)
+            ->assertSee('Your payment is processed securely', false)
+            ->assertSee('md:items-center', false)
+            ->assertSee('Complete your payment', false)
             ->assertDontSee('MTN MoMo number', false)
-            ->assertDontSee('Pay with MTN MoMo', false);
+            ->assertDontSee('Pay with MTN MoMo', false)
+            ->assertDontSee('Paystack checkout', false);
     }
 
     public function test_pay_initiation_does_not_require_phone_and_returns_paystack_checkout(): void
@@ -101,4 +104,34 @@ class MiniPaymentCheckoutTest extends TestCase
             'payer_phone' => null,
         ]);
     }
+
+    public function test_payment_callback_returns_top_frame_escape(): void
+    {
+        $user = User::create([
+            'public_id' => (string) Str::uuid(),
+            'name' => 'Vendor',
+            'email' => 'vendor3@example.com',
+        ]);
+
+        $qr = QrCode::query()->create([
+            'user_id' => $user->id,
+            'short_code' => 'paycb001',
+            'type' => QrCode::TYPE_PAYMENT,
+            'label' => 'Till',
+            'payload' => [
+                'content' => [
+                    'business_name' => 'Accra Kiosk',
+                    'currency' => 'GHS',
+                ],
+                'style' => [],
+            ],
+            'is_active' => true,
+        ]);
+
+        $this->withHeader(\App\Support\LadillLink::INTERNAL_HEADER, '1')
+            ->get('/q/'.$qr->short_code.'/pay/callback')
+            ->assertOk()
+            ->assertSee('Confirming your payment', false)
+            ->assertSee('window.top.location.replace', false);
+    }
 }