Add debug logging for component lifecycle in registration page

Introduce console log statements to track the loading and setup phases of the registrieren.vue component. This enhancement aims to improve visibility into the component's lifecycle, aiding in debugging and troubleshooting during development.

pages/registrieren.vue

@@ -228,6 +228,10 @@
 import { onMounted, ref } from 'vue'
 import { AlertCircle, Check, Loader2, Info } from 'lucide-vue-next'
 
+// Debug: Test-Ausgabe beim Laden der Komponente
+console.log('[DEBUG] ===== registrieren.vue component loaded =====')
+console.log('[DEBUG] Component setup started')
+
 const formData = ref({
   name: '',
   email: '',
@@ -244,6 +248,8 @@ const isPasskeySupported = ref(false)
 const passkeySupportReason = ref('')
 const setPasswordForPasskey = ref(true)
 
+console.log('[DEBUG] Component refs initialized')
+
 // Debug: Log beim Form-Submit
 const handleFormSubmit = (event) => {
   console.log('[DEBUG] ===== FORM SUBMIT EVENT =====')