Initial commit for first version of project

GasTankAR/Views/TankAR/WorldMapArchiver.swift

@@ -0,0 +1,20 @@
+//
+//  WorldMapArchiver.swift
+//  GasTankAR
+//
+//  Created by Dennis Nemec on 26.08.26.
+//
+
+import ARKit
+
+/// Kapselt das (De-)Serialisieren einer `ARWorldMap` via `NSKeyedArchiver`.
+/// Bewusst thread-neutral gehalten – das Archivieren sollte off-main erfolgen (teuer).
+enum WorldMapArchiver {
+    static func archive(_ worldMap: ARWorldMap) -> Data? {
+        try? NSKeyedArchiver.archivedData(withRootObject: worldMap, requiringSecureCoding: true)
+    }
+
+    static func unarchive(_ data: Data) -> ARWorldMap? {
+        try? NSKeyedUnarchiver.unarchivedObject(ofClass: ARWorldMap.self, from: data)
+    }
+}