feat: complete package 2 delete flows and package 3 port management

app/modules/locations/delete.php

@@ -7,6 +7,16 @@
 
 header('Content-Type: application/json; charset=utf-8');
 
+$method = $_SERVER['REQUEST_METHOD'] ?? 'GET';
+if ($method !== 'POST') {
+    http_response_code(405);
+    echo json_encode([
+        'success' => false,
+        'message' => 'Methode nicht erlaubt'
+    ]);
+    exit;
+}
+
 $locationId = (int)($_POST['id'] ?? $_GET['id'] ?? 0);
 
 if ($locationId <= 0) {