feat: refactored accommodation booking status model

src/Enum/Groups/AccommodationBookingOrigin.php

@@ -0,0 +1,23 @@
+<?php
+
+namespace App\Enum\Groups;
+
+/**
+ * How a booking record came about — deliberately orthogonal to the status, which
+ * carries the lifecycle. The origin is set once when the record is created and
+ * never changes afterwards, so an accepted offer stays recognisable as one without
+ * the origin ever contradicting the status it has reached.
+ */
+enum AccommodationBookingOrigin: string
+{
+    case Offer = 'offer';
+    case Direct = 'direct';
+
+    public function label(): string
+    {
+        return match ($this) {
+            self::Offer => 'Angebot',
+            self::Direct => 'Direktbuchung',
+        };
+    }
+}