feat: Complete checkout overhaul with Stripe PaymentIntent integration and abandoned cart recovery

resources/lang/en/emails.php

@@ -0,0 +1,52 @@
+<?php
+
+return [
+    'welcome' => [
+        'subject' => 'Welcome to Fotospiel, :name!',
+        'greeting' => 'Welcome to Fotospiel, :name!',
+        'body' => 'Thank you for your registration. Your account is now active.',
+        'username' => 'Username: :username',
+        'email' => 'Email: :email',
+        'verification' => 'Please verify your email address to access the admin panel.',
+        'footer' => 'Best regards,<br>The Fotospiel Team',
+    ],
+
+    'purchase' => [
+        'subject' => 'Purchase Confirmation - :package',
+        'greeting' => 'Thank you for your purchase, :name!',
+        'package' => 'Package: :package',
+        'price' => 'Price: :price €',
+        'activation' => 'The package is now activated in your tenant account.',
+        'footer' => 'Best regards,<br>The Fotospiel Team',
+    ],
+
+    'abandoned_checkout' => [
+        'subject_1h' => 'Your :package Package is Waiting for You',
+        'subject_24h' => 'Reminder: Complete Your Purchase',
+        'subject_1w' => 'Last Chance: Your Saved Package',
+
+        'greeting' => 'Hello :name,',
+
+        'body_1h' => 'You recently started purchasing our :package package but haven\'t completed it yet. Your cart is reserved for you.',
+
+        'body_24h' => 'Reminder: Your :package package has been waiting for 24 hours. Complete your purchase now and secure all the benefits.',
+
+        'body_1w' => 'Final reminder: Your :package package has been waiting for a week. This is your last chance to complete the purchase.',
+
+        'cta_button' => 'Continue Now',
+        'cta_link' => 'Or copy this link: :url',
+
+        'benefits_title' => 'Why buy now?',
+        'benefit1' => 'Quick checkout in 2 minutes',
+        'benefit2' => 'Secure payment with Stripe',
+        'benefit3' => 'Instant access after payment',
+        'benefit4' => 'Secure 10% discount',
+
+        'footer' => 'Best regards,<br>The Fotospiel Team',
+    ],
+
+    'contact' => [
+        'subject' => 'New Contact Request',
+        'body' => 'Contact request from :name (:email): :message',
+    ],
+];