Add self-serve module loading, enum test, and update email styles/text

- Add `SelfserveLaneServicesEnumTest` to validate `selfserve_lane_services` cases.
- Update `index.php` to load self-serve module interfaces, traits, classes, helpers, and configs.
- Center Truck Wash logo in email header and adjust styling.
- Localize password reset error message in `authRoute.php` with Danish text.

services/nginx/app/index.php

@@ -131,6 +131,25 @@ foreach (glob(WD . '/modules/subusers/permissions/*.php') as $permissionFile) {
     require_once $permissionFile;
 }
 
+// Selfserve module
+// Load interfaces, traits, classes, helpers and config so routes can use enums like
+// modules\selfserve\helpers\selfserve_lane_services without composer autoloading
+foreach (glob(WD . '/modules/selfserve/interfaces/*.php') as $interface) {
+    require_once $interface;
+}
+foreach (glob(WD . '/modules/selfserve/traits/*.php') as $trait) {
+    require_once $trait;
+}
+foreach (glob(WD . '/modules/selfserve/classes/*.php') as $classFile) {
+    require_once $classFile;
+}
+foreach (glob(WD . '/modules/selfserve/helpers/*.php') as $helper) {
+    require_once $helper;
+}
+foreach (glob(WD . '/modules/selfserve/config/*.php') as $configFile) {
+    require_once $configFile;
+}
+
 // Dynamic Images module
 foreach (glob(WD . '/modules/dynamicimages/interfaces/*.php') as $interface) {
     require_once $interface;

services/nginx/app/modules/email/templates/email_template_header.php

@@ -19,11 +19,11 @@ class email_template_header
         # Start of the html
         ?>
 
-        <!-- Logo -->
-        <div style="max-width: 600px;">
+        <!-- Logo centered -->
+        <div style="text-align: center; margin-bottom: 20px;">
             <img src="https://usercontent.one/wp/www.truckwash.dk/wp-content/uploads/2021/04/truckwash-banner-png.png"
                  alt="Truck Wash logo"
-                 style="width: 100%; max-width: 600px; height: auto; display: block; margin: 0 auto;">
+                 style="width: 100%; max-width: 600px; height: auto;">
         </div>
 
         <?php

services/nginx/app/routes/authRoute.php

@@ -298,7 +298,7 @@ class authRoute
             $email_address = $user->email->value();
             if (empty($email_address)) {
                 // If no email is set, we can't send the reset email
-                $response->error('No email address associated with this account. Please contact support.', 400);
+                $response->error('Der er ingen email-addresse tilknyttet denne konto, ring venligst på +45 43 71 78 86 for konto gendannelse.', 400);
             }
 
             // Generate token

services/nginx/app/tests/selfserve/SelfserveLaneServicesEnumTest.php

@@ -0,0 +1,19 @@
+<?php
+
+// Define WD to the application root if not already defined
+if (!defined('WD')) { define('WD', dirname(__DIR__, 2)); }
+
+require_once WD . '/modules/selfserve/helpers/selfserve_lane_services.php';
+
+use modules\selfserve\helpers\selfserve_lane_services;
+
+// Simple assertions without a framework
+$cases = selfserve_lane_services::cases();
+$names = array_map(fn($c) => $c->name, $cases);
+
+if (!in_array('MACHINE', $names, true)) {
+    fwrite(STDERR, "✘ Expected enum case MACHINE to be defined\n");
+    exit(1);
+}
+echo "✔ selfserve_lane_services enum is loadable and contains MACHINE\n";
+echo "SelfserveLaneServicesEnumTest completed.\n";