guest booking self-management feature + layout fixes

- add manage_token column to bookings (DB migration done)
- generate unique token per booking, include manage link in confirmation emails (no/en/hu)
- new routes: manage-booking, manage-booking-process, manage-booking-cancel
- new views: manage-booking.php, manage-booking-cancelled.php
- 24h cutoff enforcement for cancel/modify; emails sent to guest + studio CC
- fix manage-booking step 3 float layout (overflow:auto BFC clearfix)
- fix booking page time slot overflow: bookingResultsWrapper 378px -> 360px

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

application/views/pages/manage-booking-cancelled.php

@@ -0,0 +1,44 @@
+<?php
+    // Determine subpage from the booking's service type to pick correct skeleton
+    $serviceIds = unserialize($booking->service_ids);
+    $subpage = 'barber';
+    if(is_array($serviceIds) && !empty($serviceIds)){
+        $firstService = $this->Service_model->getServiceById($serviceIds[0]);
+        if($firstService) $subpage = $firstService->service_type;
+    }
+
+    if($subpage == 'beauty'){
+        include(getcwd().'/application/views/includes/beauty-skeleton-top.php');
+    } else {
+        include(getcwd().'/application/views/includes/barber-skeleton-top.php');
+    }
+
+    $messages = array(
+        'no' => 'Din bestilling den <strong>'.$booking->booking_date.'</strong> kl. <strong>'.date('H:i', strtotime($booking->booking_start_time)).'</strong> med <strong>'.$worker->worker_name.'</strong> er avbestilt.',
+        'en' => 'Your booking on <strong>'.$booking->booking_date.'</strong> at <strong>'.date('H:i', strtotime($booking->booking_start_time)).'</strong> with <strong>'.$worker->worker_name.'</strong> has been cancelled.',
+        'hu' => 'A <strong>'.$booking->booking_date.'</strong> <strong>'.date('H:i', strtotime($booking->booking_start_time)).'</strong>-os foglalásod <strong>'.$worker->worker_name.'</strong>-nál törölve lett.',
+    );
+
+    $titles = array(
+        'no' => 'Bestilling avbestilt',
+        'en' => 'Booking cancelled',
+        'hu' => 'Foglalás törölve',
+    );
+
+    $lang = $selectedLang;
+    $msg   = isset($messages[$lang]) ? $messages[$lang] : $messages['en'];
+    $title = isset($titles[$lang])   ? $titles[$lang]   : $titles['en'];
+?>
+
+<div class="bookingContainer" style="min-height:400px; padding:20px;">
+    <div class="bookingThankYouTitle"><?php echo $title; ?></div>
+    <div class="bookingThankYouMessageTitle" style="margin-top:15px;"><?php echo $msg; ?></div>
+</div>
+
+<?php
+    if($subpage == 'beauty'){
+        include(getcwd().'/application/views/includes/beauty-skeleton-bottom.php');
+    } else {
+        include(getcwd().'/application/views/includes/barber-skeleton-bottom.php');
+    }
+?>