Enhance deployment script with build validation checks

Add checks to verify the success of the build process in deploy-production.sh. Implement error messages for missing critical files and directories, improving error handling and providing clear feedback during deployment. This update aims to ensure a successful build before proceeding with production data restoration.

deploy-production.sh

@@ -145,6 +145,21 @@ echo ""
 echo "5. Building application..."
 npm run build
 
+# Prüfe, ob der Build erfolgreich war
+if [ ! -d ".output/public/_nuxt" ]; then
+  echo "ERROR: Build fehlgeschlagen - .output/public/_nuxt Verzeichnis fehlt!"
+  echo "Bitte prüfen Sie die Build-Ausgabe auf Fehler."
+  exit 1
+fi
+
+# Prüfe, ob wichtige Dateien vorhanden sind
+if [ ! -f ".output/server/index.mjs" ]; then
+  echo "ERROR: Build fehlgeschlagen - .output/server/index.mjs fehlt!"
+  exit 1
+fi
+
+echo "   Build erfolgreich - .output/public/_nuxt vorhanden"
+
 # 6. Restore Production Data (überschreibe Repo-Defaults mit Backup)
 echo ""
 echo "6. Restoring production data..."

pages/registrieren.vue

@@ -12,8 +12,11 @@
 
       <div class="bg-white rounded-xl shadow-lg p-8">
         <!-- Debug: Sichtbarer Test -->
-        <div class="mb-4 p-2 bg-yellow-100 border border-yellow-300 rounded text-xs">
-          <strong>DEBUG:</strong> Komponente geladen. handleFormSubmit definiert: {{ typeof handleFormSubmit !== 'undefined' ? 'JA' : 'NEIN' }}
+        <div class="mb-4 p-3 bg-yellow-200 border-2 border-yellow-500 rounded-lg text-sm font-mono">
+          <div class="font-bold text-yellow-900">🔍 DEBUG MODE AKTIV</div>
+          <div class="mt-1 text-yellow-800">Komponente: registrieren.vue geladen</div>
+          <div class="mt-1 text-yellow-800">Passkey-Support: {{ isPasskeySupported ? 'JA' : 'NEIN' }}</div>
+          <div class="mt-1 text-yellow-800">Use Passkey: {{ usePasskey ? 'JA' : 'NEIN' }}</div>
         </div>
         
         <form