Feat: Adding Payment Drivers, configuring stripe

src/Payment/Exceptions/PaymentNotConfirmedException.php

@@ -0,0 +1,22 @@
+<?php
+
+namespace Modules\Core\Payment\Exceptions;
+
+use RuntimeException;
+use Throwable;
+
+/**
+ * Thrown by a Modules\Core\Checkout\Contracts\PaymentDriver when the
+ * gateway has not confirmed payment — wrong/expired intent, already
+ * processed, or the gateway itself rejects the confirmation. A driver
+ * throws this instead of silently placing the order: CheckoutService::
+ * placeOrder() must only ever be called once a driver has positively
+ * confirmed payment, never as a fallback.
+ */
+class PaymentNotConfirmedException extends RuntimeException
+{
+    public function __construct(string $message, ?Throwable $previous = null)
+    {
+        parent::__construct($message, previous: $previous);
+    }
+}