Remove outdated edge gateway object classes, add new agent implementation

Transitioned from obsolete gateway object classes (`edge_gateway_shell_action_jobs_o`, `edge_gateway_shell_events_o`, `edge_gateway_shell_sessions_o`, `edge_gateway_update_jobs_o`) to the new agent implementation (`edge-gateway-agent/agent.php`).

services/nginx/app/classes/email.php

@@ -39,6 +39,8 @@ use Psr\Http\Client\ClientExceptionInterface;
 
 #[AllowDynamicProperties] class email implements email_i
 {
+    public static array $fake_deliveries = [];
+
     /**
      * Configuration for the email service
      * @var email_c
@@ -125,6 +127,17 @@ use Psr\Http\Client\ClientExceptionInterface;
      */
     private function sendEmailMailerSend(string $to, string $recipient_name, string $subject, string $message, string $html = null, string $references = null, array $attachments = []): void
     {
+        if (self::isFakeDeliveryEnabled()) {
+            self::$fake_deliveries[] = [
+                'to' => $to,
+                'recipient_name' => $recipient_name,
+                'subject' => $subject,
+                'message' => $message,
+                'html' => $html,
+            ];
+            return;
+        }
+
         // Check if the email is blacklisted
         $blacklisted_emails = [
             'invoice.dk@freja.com', // TODO: Make this dynamic.
@@ -209,6 +222,16 @@ use Psr\Http\Client\ClientExceptionInterface;
         $this->sendEmailMailerSend($to, $recipient_name, 'Betalingslink for bestilling #' . $order_id, '', $html);
     }
 
+    public static function resetFakeDeliveries(): void
+    {
+        self::$fake_deliveries = [];
+    }
+
+    private static function isFakeDeliveryEnabled(): bool
+    {
+        return getenv('EMAIL_FAKE_MODE') === '1';
+    }
+
     /**
      * Send a booking confirmation email
      * @throws MailerSendException
@@ -488,4 +511,4 @@ use Psr\Http\Client\ClientExceptionInterface;
             $this->attachments
         );
     }
-}
+}