diff --git a/backend/app.py b/backend/app.py
index dcaa9e476..838af8888 100644
--- a/backend/app.py
+++ b/backend/app.py
@@ -959,7 +959,8 @@ def api_get_printer_status():
         
         if has_tapo_printers:
             try:
-                from utils.hardware_integration import tapo_controller
+                from utils.hardware_integration import get_tapo_controller
+                tapo_controller = get_tapo_controller()
                 app_logger.info(f"✅ Tapo-Controller erfolgreich importiert: {type(tapo_controller)}")
             except Exception as import_error:
                 app_logger.warning(f"⚠️ Tapo-Controller konnte nicht importiert werden: {str(import_error)}")
diff --git a/backend/backend/database/myp.db-wal b/backend/backend/database/myp.db-wal
index 98e9a9e20..18fc73e5e 100644
Binary files a/backend/backend/database/myp.db-wal and b/backend/backend/database/myp.db-wal differ
diff --git a/backend/blueprints/admin_unified.py b/backend/blueprints/admin_unified.py
index f87e1f2b8..fa5fde750 100644
--- a/backend/blueprints/admin_unified.py
+++ b/backend/blueprints/admin_unified.py
@@ -1144,7 +1144,7 @@ def export_logs_api():
 
 # ===== API-ENDPUNKTE FÜR SYSTEM-INFORMATIONEN =====
 
-@admin_blueprint.route("/api/system/status", methods=["GET"])
+@admin_api_blueprint.route("/system/status", methods=["GET"])
 @admin_required
 def get_system_status_api():
     """API-Endpunkt für System-Status-Informationen"""
@@ -1473,7 +1473,7 @@ def api_admin_plug_schedules_cleanup():
 @admin_required
 def api_admin_plug_schedules_calendar():
     """
-    API-Endpoint für Kalender-Daten der Steckdosenschaltzeiten.
+    API-Endpunkt für Kalender-Daten der Steckdosenschaltzeiten.
     Liefert Events für FullCalendar im JSON-Format.
     """
     try:
@@ -1549,6 +1549,218 @@ def api_admin_plug_schedules_calendar():
         admin_logger.error(f"Fehler beim Laden der Kalender-Daten: {str(e)}")
         return jsonify([])
 
+@admin_api_blueprint.route('/live-stats', methods=['GET'])
+@admin_required
+def api_admin_live_stats():
+    """
+    API-Endpunkt für Live-Statistiken des Admin-Dashboards
+    
+    Liefert aktuelle System-Statistiken für das Dashboard:
+    - Benutzer-Statistiken
+    - Drucker-Status
+    - Job-Statistiken
+    - System-Performance
+    """
+    try:
+        with get_cached_session() as db_session:
+            # Benutzer-Statistiken
+            total_users = db_session.query(User).count()
+            active_users = db_session.query(User).filter(User.active == True).count()
+            admin_users = db_session.query(User).filter(User.role == 'admin').count()
+            
+            # Drucker-Statistiken
+            total_printers = db_session.query(Printer).count()
+            active_printers = db_session.query(Printer).filter(Printer.active == True).count()
+            online_printers = db_session.query(Printer).filter(
+                Printer.active == True,
+                Printer.status == 'online'
+            ).count()
+            
+            # Job-Statistiken
+            total_jobs = db_session.query(Job).count()
+            active_jobs = db_session.query(Job).filter(
+                Job.status.in_(['pending', 'printing', 'paused'])
+            ).count()
+            completed_jobs = db_session.query(Job).filter(
+                Job.status == 'completed'
+            ).count()
+            failed_jobs = db_session.query(Job).filter(
+                Job.status == 'failed'
+            ).count()
+            
+            # Jobs der letzten 24 Stunden
+            last_24h = datetime.now() - timedelta(hours=24)
+            jobs_24h = db_session.query(Job).filter(
+                Job.created_at >= last_24h
+            ).count()
+            
+            # Jobs der letzten 7 Tage
+            last_7d = datetime.now() - timedelta(days=7)
+            jobs_7d = db_session.query(Job).filter(
+                Job.created_at >= last_7d
+            ).count()
+            
+            # Steckdosen-Statistiken
+            plug_logs_24h = db_session.query(PlugStatusLog).filter(
+                PlugStatusLog.timestamp >= last_24h
+            ).count()
+            
+            # System-Logs der letzten Stunde
+            last_hour = datetime.now() - timedelta(hours=1)
+            system_logs_1h = db_session.query(SystemLog).filter(
+                SystemLog.timestamp >= last_hour
+            ).count()
+        
+        # Response-Struktur
+        stats = {
+            'users': {
+                'total': total_users,
+                'active': active_users,
+                'admins': admin_users
+            },
+            'printers': {
+                'total': total_printers,
+                'active': active_printers,
+                'online': online_printers,
+                'offline': active_printers - online_printers
+            },
+            'jobs': {
+                'total': total_jobs,
+                'active': active_jobs,
+                'completed': completed_jobs,
+                'failed': failed_jobs,
+                'last_24h': jobs_24h,
+                'last_7d': jobs_7d
+            },
+            'system': {
+                'plug_logs_24h': plug_logs_24h,
+                'system_logs_1h': system_logs_1h,
+                'uptime': 'Unbekannt'  # Könnte später implementiert werden
+            },
+            'timestamp': datetime.now().isoformat()
+        }
+        
+        admin_api_logger.info(f"Live-Statistiken abgerufen von Admin {current_user.username}")
+        
+        return jsonify({
+            'success': True,
+            'stats': stats,
+            'message': 'Live-Statistiken erfolgreich geladen'
+        })
+        
+    except Exception as e:
+        admin_api_logger.error(f"Fehler beim Abrufen der Live-Statistiken: {str(e)}")
+        return jsonify({
+            'success': False,
+            'error': 'Fehler beim Laden der Statistiken',
+            'message': str(e),
+            'stats': {}
+        }), 500
+
+@admin_api_blueprint.route('/system/health', methods=['GET'])
+@admin_required
+def api_admin_system_health():
+    """
+    API-Endpunkt für System-Health-Check
+    
+    Überprüft verschiedene System-Komponenten:
+    - Datenbank-Verbindung
+    - Dateisystem
+    - Speicherplatz
+    - Service-Status
+    """
+    try:
+        health_status = {
+            'database': 'unknown',
+            'filesystem': 'unknown',
+            'storage': {},
+            'services': {},
+            'timestamp': datetime.now().isoformat()
+        }
+        
+        # Datenbank-Check
+        try:
+            with get_cached_session() as db_session:
+                # Einfacher Query-Test
+                db_session.execute("SELECT 1")
+                health_status['database'] = 'healthy'
+        except Exception as db_error:
+            health_status['database'] = 'unhealthy'
+            admin_api_logger.error(f"Datenbank-Health-Check fehlgeschlagen: {str(db_error)}")
+        
+        # Dateisystem-Check
+        try:
+            # Prüfe wichtige Verzeichnisse
+            important_dirs = [
+                'backend/uploads',
+                'backend/database',
+                'backend/logs'
+            ]
+            
+            all_accessible = True
+            for dir_path in important_dirs:
+                if not os.path.exists(dir_path) or not os.access(dir_path, os.W_OK):
+                    all_accessible = False
+                    break
+            
+            health_status['filesystem'] = 'healthy' if all_accessible else 'unhealthy'
+        except Exception as fs_error:
+            health_status['filesystem'] = 'unhealthy'
+            admin_api_logger.error(f"Dateisystem-Health-Check fehlgeschlagen: {str(fs_error)}")
+        
+        # Speicherplatz-Check
+        try:
+            statvfs = os.statvfs('.')
+            total_space = statvfs.f_blocks * statvfs.f_frsize
+            free_space = statvfs.f_bavail * statvfs.f_frsize
+            used_space = total_space - free_space
+            
+            health_status['storage'] = {
+                'total_gb': round(total_space / (1024**3), 2),
+                'used_gb': round(used_space / (1024**3), 2),
+                'free_gb': round(free_space / (1024**3), 2),
+                'percent_used': round((used_space / total_space) * 100, 1)
+            }
+        except Exception as storage_error:
+            admin_api_logger.error(f"Speicherplatz-Check fehlgeschlagen: {str(storage_error)}")
+        
+        # Service-Status (vereinfacht)
+        health_status['services'] = {
+            'web_server': 'running',  # Immer running, da wir antworten
+            'job_scheduler': 'unknown',  # Könnte später implementiert werden
+            'tapo_controller': 'unknown'  # Könnte später implementiert werden
+        }
+        
+        # Gesamt-Status berechnen
+        if health_status['database'] == 'healthy' and health_status['filesystem'] == 'healthy':
+            overall_status = 'healthy'
+        elif health_status['database'] == 'unhealthy' or health_status['filesystem'] == 'unhealthy':
+            overall_status = 'unhealthy'
+        else:
+            overall_status = 'degraded'
+        
+        health_status['overall'] = overall_status
+        
+        admin_api_logger.info(f"System-Health-Check durchgeführt: {overall_status}")
+        
+        return jsonify({
+            'success': True,
+            'health': health_status,
+            'message': f'System-Status: {overall_status}'
+        })
+        
+    except Exception as e:
+        admin_api_logger.error(f"Fehler beim System-Health-Check: {str(e)}")
+        return jsonify({
+            'success': False,
+            'error': 'Fehler beim Health-Check',
+            'message': str(e),
+            'health': {
+                'overall': 'error',
+                'timestamp': datetime.now().isoformat()
+            }
+        }), 500
+
 # ===== HELPER FUNCTIONS FOR PLUG SCHEDULES =====
 
 def get_relative_time(timestamp):
diff --git a/backend/blueprints/printers.py b/backend/blueprints/printers.py
index 7e28615ee..43f9c529d 100644
--- a/backend/blueprints/printers.py
+++ b/backend/blueprints/printers.py
@@ -73,6 +73,90 @@ def get_live_printer_status():
             "message": str(e)
         }), 500
 
+@printers_blueprint.route("/status", methods=["GET"])
+@login_required
+@measure_execution_time(logger=printers_logger, task_name="API-Drucker-Status-Abfrage")
+def get_printer_status():
+    """
+    Liefert den aktuellen Status aller Drucker.
+    Dieser Endpunkt ist kompatibel mit dem Frontend printer_monitor.js
+    
+    Returns:
+        JSON mit Status aller Drucker
+    """
+    printers_logger.info(f"🔄 Status-Abfrage von Benutzer {current_user.name} (ID: {current_user.id})")
+    
+    try:
+        # Drucker aus Datenbank holen
+        db_session = get_db_session()
+        printers = db_session.query(Printer).all()
+        
+        # Status-Daten für jeden Drucker sammeln
+        printer_data = []
+        status_summary = {
+            'total': len(printers),
+            'online': 0,
+            'offline': 0,
+            'standby': 0,
+            'unreachable': 0,
+            'unconfigured': 0
+        }
+        
+        for printer in printers:
+            # Basis-Drucker-Daten
+            printer_info = {
+                'id': printer.id,
+                'name': printer.name,
+                'model': printer.model,
+                'location': printer.location,
+                'status': printer.status or 'offline',
+                'plug_ip': printer.plug_ip,
+                'has_plug': bool(printer.plug_ip and printer.plug_username and printer.plug_password),
+                'last_checked': printer.last_checked.isoformat() if printer.last_checked else None,
+                'created_at': printer.created_at.isoformat() if printer.created_at else None
+            }
+            
+            # Status-Zusammenfassung aktualisieren
+            status = printer_info['status']
+            if status in status_summary:
+                status_summary[status] += 1
+            else:
+                status_summary['offline'] += 1
+            
+            # Aktive Jobs zählen
+            active_jobs = db_session.query(Job).filter(
+                Job.printer_id == printer.id,
+                Job.status.in_(["running", "printing", "active", "scheduled"])
+            ).count()
+            
+            printer_info['active_jobs'] = active_jobs
+            printer_info['is_busy'] = active_jobs > 0
+            
+            printer_data.append(printer_info)
+        
+        db_session.close()
+        
+        # Antwort mit Status und Zusammenfassung
+        response = {
+            "success": True,
+            "printers": printer_data,
+            "summary": status_summary,
+            "timestamp": datetime.now().isoformat()
+        }
+        
+        printers_logger.info(f"✅ Status-Abfrage erfolgreich: {len(printer_data)} Drucker")
+        return jsonify(response)
+        
+    except Exception as e:
+        printers_logger.error(f"❌ Fehler bei Status-Abfrage: {str(e)}")
+        if 'db_session' in locals():
+            db_session.close()
+        return jsonify({
+            "success": False,
+            "error": "Fehler bei Abfrage des Druckerstatus",
+            "message": str(e)
+        }), 500
+
 @printers_blueprint.route("/control/<int:printer_id>/power", methods=["POST"])
 @login_required
 @require_permission(Permission.CONTROL_PRINTER)  # Verwende die bereits vorhandene Berechtigung
diff --git a/backend/docs/printer-monitor-complete-fix.md b/backend/docs/printer-monitor-complete-fix.md
new file mode 100644
index 000000000..0519ecba6
--- /dev/null
+++ b/backend/docs/printer-monitor-complete-fix.md
@@ -0,0 +1 @@
+ 
\ No newline at end of file
diff --git a/backend/instance/sessions/1462c4043506d74ebeacf971fdbca293_activity.pkl b/backend/instance/sessions/1462c4043506d74ebeacf971fdbca293_activity.pkl
new file mode 100644
index 000000000..1f204efcd
Binary files /dev/null and b/backend/instance/sessions/1462c4043506d74ebeacf971fdbca293_activity.pkl differ
diff --git a/backend/instance/sessions/673d7360f5eaf04be37cc013a0e4a538_activity.pkl b/backend/instance/sessions/673d7360f5eaf04be37cc013a0e4a538_activity.pkl
new file mode 100644
index 000000000..2ffea0a01
Binary files /dev/null and b/backend/instance/sessions/673d7360f5eaf04be37cc013a0e4a538_activity.pkl differ
diff --git a/backend/instance/sessions/e018b45aa4a564a497ba4215e937669f_activity.pkl b/backend/instance/sessions/e018b45aa4a564a497ba4215e937669f_activity.pkl
new file mode 100644
index 000000000..a08371172
Binary files /dev/null and b/backend/instance/sessions/e018b45aa4a564a497ba4215e937669f_activity.pkl differ
diff --git a/backend/logs/admin/admin.log b/backend/logs/admin/admin.log
index 8b2cb99f9..3e8442d1c 100644
--- a/backend/logs/admin/admin.log
+++ b/backend/logs/admin/admin.log
@@ -2,3 +2,12 @@
 2025-06-12 08:08:27 - [admin] admin - [INFO] INFO - Admin-Dashboard geladen von admin
 2025-06-12 08:31:58 - [admin] admin - [INFO] INFO - Admin-Check für Funktion printers_overview: User authenticated: True, User ID: 1, Is Admin: True
 2025-06-12 08:31:58 - [admin] admin - [INFO] INFO - Druckerübersicht geladen von admin
+2025-06-12 08:33:35 - [admin] admin - [INFO] INFO - Admin-Check für Funktion admin_dashboard: User authenticated: True, User ID: 1, Is Admin: True
+2025-06-12 08:33:35 - [admin] admin - [INFO] INFO - Admin-Dashboard geladen von admin
+2025-06-12 08:33:38 - [admin] admin - [INFO] INFO - Admin-Check für Funktion logs_overview: User authenticated: True, User ID: 1, Is Admin: True
+2025-06-12 08:33:38 - [admin] admin - [INFO] INFO - Logs-Übersicht geladen von admin
+2025-06-12 08:33:39 - [admin] admin - [INFO] INFO - Admin-Check für Funktion get_logs_api: User authenticated: True, User ID: 1, Is Admin: True
+2025-06-12 08:33:39 - [admin] admin - [INFO] INFO - Logs abgerufen: 0 Einträge, Level: all
+2025-06-12 08:33:40 - [admin] admin - [INFO] INFO - Admin-Check für Funktion get_logs_api: User authenticated: True, User ID: 1, Is Admin: True
+2025-06-12 08:33:40 - [admin] admin - [INFO] INFO - Logs abgerufen: 0 Einträge, Level: all
+2025-06-12 08:33:42 - [admin] admin - [INFO] INFO - Admin-Check für Funktion guest_requests: User authenticated: True, User ID: 1, Is Admin: True
diff --git a/backend/logs/app/app.log b/backend/logs/app/app.log
index 95ca470a9..979f2dcf4 100644
--- a/backend/logs/app/app.log
+++ b/backend/logs/app/app.log
@@ -2024,3 +2024,282 @@ werkzeug.routing.exceptions.BuildError: Could not build url for endpoint 'admin.
 2025-06-12 08:32:50 - [app] app - [INFO] INFO - [STARTUP] Starte Job Scheduler...
 2025-06-12 08:32:50 - [app] app - [INFO] INFO - [STARTUP] ✅ Job Scheduler gestartet
 2025-06-12 08:32:50 - [app] app - [INFO] INFO - [STARTUP] 🌐 Server startet auf http://0.0.0.0:5000
+2025-06-12 08:32:51 - [app] app - [WARNING] WARNING - DatabaseCleanupManager nicht verfügbar - Fallback auf Legacy-Cleanup
+2025-06-12 08:32:51 - [app] app - [INFO] INFO - Optimierte SQLite-Engine erstellt: backend/database/myp.db
+2025-06-12 08:32:53 - [app] app - [INFO] INFO - [CONFIG] Erkannte Umgebung: development
+2025-06-12 08:32:53 - [app] app - [INFO] INFO - [CONFIG] Production-Modus: False
+2025-06-12 08:32:53 - [app] app - [INFO] INFO - [CONFIG] Verwende Development-Konfiguration
+2025-06-12 08:32:53 - [app] app - [INFO] INFO - [DEVELOPMENT] Aktiviere Development-Konfiguration
+2025-06-12 08:32:53 - [app] app - [INFO] INFO - [DEVELOPMENT] ✅ MYP Development Environment Konfiguration aktiviert
+2025-06-12 08:32:53 - [app] app - [INFO] INFO - [DEVELOPMENT] ✅ Environment: Development/Testing
+2025-06-12 08:32:53 - [app] app - [INFO] INFO - [DEVELOPMENT] ✅ Debug Mode: True
+2025-06-12 08:32:53 - [app] app - [INFO] INFO - [DEVELOPMENT] ✅ SQL Echo: True
+2025-06-12 08:32:53 - [app] app - [INFO] INFO - [STARTUP] 🚀 Starte MYP DEVELOPMENT-Umgebung
+2025-06-12 08:32:53 - [app] app - [INFO] INFO - [STARTUP] 🏢 Mercedes-Benz TBA Marienfelde
+2025-06-12 08:32:53 - [app] app - [INFO] INFO - [STARTUP] 🔒 Air-Gapped: True
+2025-06-12 08:32:53 - [app] app - [INFO] INFO - [STARTUP] Initialisiere Datenbank...
+2025-06-12 08:32:53 - [app] app - [INFO] INFO - SQLite für Raspberry Pi optimiert (reduzierte Cache-Größe, SD-Karten I/O)
+2025-06-12 08:32:53 - [app] app - [INFO] INFO - Datenbank mit Optimierungen initialisiert
+2025-06-12 08:32:53 - [app] app - [INFO] INFO - [STARTUP] ✅ Datenbank initialisiert
+2025-06-12 08:32:53 - [app] app - [INFO] INFO - [STARTUP] Prüfe Initial-Admin...
+2025-06-12 08:32:54 - [app] app - [INFO] INFO - Admin-Benutzer admin (admin@mercedes-benz.com) existiert bereits. Passwort wurde zurückgesetzt.
+2025-06-12 08:32:54 - [app] app - [INFO] INFO - [STARTUP] ✅ Admin-Benutzer geprüft
+2025-06-12 08:32:54 - [app] app - [INFO] INFO - [STARTUP] Starte Queue Manager...
+2025-06-12 08:32:54 - [app] app - [INFO] INFO - [STARTUP] ✅ Queue Manager gestartet
+2025-06-12 08:32:54 - [app] app - [INFO] INFO - [STARTUP] Starte Job Scheduler...
+2025-06-12 08:32:54 - [app] app - [INFO] INFO - [STARTUP] ✅ Job Scheduler gestartet
+2025-06-12 08:32:54 - [app] app - [INFO] INFO - [STARTUP] 🌐 Server startet auf http://0.0.0.0:5000
+2025-06-12 08:32:54 - [app] app - [INFO] INFO - Locating template 'jobs.html':
+    1: trying loader of application '__main__'
+       class: jinja2.loaders.FileSystemLoader
+       encoding: 'utf-8'
+       followlinks: False
+       searchpath:
+         - C:\Users\TTOMCZA.EMEA\Dev\Projektarbeit-MYP\backend\templates
+       -> found ('C:\\Users\\TTOMCZA.EMEA\\Dev\\Projektarbeit-MYP\\backend\\templates\\jobs.html')
+2025-06-12 08:32:54 - [app] app - [INFO] INFO - Locating template 'base.html':
+    1: trying loader of application '__main__'
+       class: jinja2.loaders.FileSystemLoader
+       encoding: 'utf-8'
+       followlinks: False
+       searchpath:
+         - C:\Users\TTOMCZA.EMEA\Dev\Projektarbeit-MYP\backend\templates
+       -> found ('C:\\Users\\TTOMCZA.EMEA\\Dev\\Projektarbeit-MYP\\backend\\templates\\base.html')
+2025-06-12 08:32:54 - [app] app - [DEBUG] DEBUG - Response: 200
+2025-06-12 08:32:54 - [app] app - [DEBUG] DEBUG - Request: GET /.well-known/appspecific/com.chrome.devtools.json
+2025-06-12 08:32:54 - [app] app - [INFO] INFO - Not Found (404): http://127.0.0.1:5000/.well-known/appspecific/com.chrome.devtools.json
+2025-06-12 08:32:54 - [app] app - [INFO] INFO - Locating template 'errors/404.html':
+    1: trying loader of application '__main__'
+       class: jinja2.loaders.FileSystemLoader
+       encoding: 'utf-8'
+       followlinks: False
+       searchpath:
+         - C:\Users\TTOMCZA.EMEA\Dev\Projektarbeit-MYP\backend\templates
+       -> found ('C:\\Users\\TTOMCZA.EMEA\\Dev\\Projektarbeit-MYP\\backend\\templates\\errors\\404.html')
+2025-06-12 08:32:54 - [app] app - [DEBUG] DEBUG - Response: 404
+2025-06-12 08:32:55 - [app] app - [DEBUG] DEBUG - Request: GET /api/notifications
+2025-06-12 08:32:55 - [app] app - [DEBUG] DEBUG - Response: 200
+2025-06-12 08:32:55 - [app] app - [DEBUG] DEBUG - Request: GET /api/jobs
+2025-06-12 08:32:55 - [app] app - [DEBUG] DEBUG - Request: GET /api/session/status
+2025-06-12 08:32:55 - [app] app - [DEBUG] DEBUG - Request: GET /api/user/settings
+2025-06-12 08:32:55 - [app] app - [DEBUG] DEBUG - Response: 500
+2025-06-12 08:32:55 - [app] app - [DEBUG] DEBUG - Response: 200
+2025-06-12 08:32:55 - [app] app - [DEBUG] DEBUG - Response: 200
+2025-06-12 08:32:56 - [app] app - [DEBUG] DEBUG - Request: GET /stats
+2025-06-12 08:32:56 - [app] app - [INFO] INFO - Locating template 'stats.html':
+    1: trying loader of application '__main__'
+       class: jinja2.loaders.FileSystemLoader
+       encoding: 'utf-8'
+       followlinks: False
+       searchpath:
+         - C:\Users\TTOMCZA.EMEA\Dev\Projektarbeit-MYP\backend\templates
+       -> found ('C:\\Users\\TTOMCZA.EMEA\\Dev\\Projektarbeit-MYP\\backend\\templates\\stats.html')
+2025-06-12 08:32:56 - [app] app - [DEBUG] DEBUG - Response: 200
+2025-06-12 08:32:56 - [app] app - [DEBUG] DEBUG - Request: GET /.well-known/appspecific/com.chrome.devtools.json
+2025-06-12 08:32:56 - [app] app - [INFO] INFO - Not Found (404): http://127.0.0.1:5000/.well-known/appspecific/com.chrome.devtools.json
+2025-06-12 08:32:56 - [app] app - [DEBUG] DEBUG - Response: 404
+2025-06-12 08:32:57 - [app] app - [DEBUG] DEBUG - Request: GET /api/notifications
+2025-06-12 08:32:57 - [app] app - [DEBUG] DEBUG - Response: 200
+2025-06-12 08:32:57 - [app] app - [DEBUG] DEBUG - Request: GET /api/session/status
+2025-06-12 08:32:57 - [app] app - [DEBUG] DEBUG - Request: GET /api/user/settings
+2025-06-12 08:32:57 - [app] app - [DEBUG] DEBUG - Response: 500
+2025-06-12 08:32:57 - [app] app - [DEBUG] DEBUG - Response: 200
+2025-06-12 08:33:04 - [app] app - [DEBUG] DEBUG - Request: GET /calendar
+2025-06-12 08:33:04 - [app] app - [INFO] INFO - Locating template 'calendar.html':
+    1: trying loader of application '__main__'
+       class: jinja2.loaders.FileSystemLoader
+       encoding: 'utf-8'
+       followlinks: False
+       searchpath:
+         - C:\Users\TTOMCZA.EMEA\Dev\Projektarbeit-MYP\backend\templates
+       -> found ('C:\\Users\\TTOMCZA.EMEA\\Dev\\Projektarbeit-MYP\\backend\\templates\\calendar.html')
+2025-06-12 08:33:04 - [app] app - [DEBUG] DEBUG - Response: 200
+2025-06-12 08:33:04 - [app] app - [DEBUG] DEBUG - Request: GET /.well-known/appspecific/com.chrome.devtools.json
+2025-06-12 08:33:04 - [app] app - [INFO] INFO - Not Found (404): http://127.0.0.1:5000/.well-known/appspecific/com.chrome.devtools.json
+2025-06-12 08:33:04 - [app] app - [DEBUG] DEBUG - Response: 404
+2025-06-12 08:33:05 - [app] app - [DEBUG] DEBUG - Request: GET /api/notifications
+2025-06-12 08:33:05 - [app] app - [DEBUG] DEBUG - Response: 200
+2025-06-12 08:33:05 - [app] app - [DEBUG] DEBUG - Request: GET /api/calendar/events
+2025-06-12 08:33:05 - [app] app - [DEBUG] DEBUG - Response: 200
+2025-06-12 08:33:05 - [app] app - [DEBUG] DEBUG - Request: GET /api/session/status
+2025-06-12 08:33:05 - [app] app - [DEBUG] DEBUG - Request: GET /api/user/settings
+2025-06-12 08:33:05 - [app] app - [DEBUG] DEBUG - Response: 500
+2025-06-12 08:33:05 - [app] app - [DEBUG] DEBUG - Response: 200
+2025-06-12 08:33:13 - [app] app - [DEBUG] DEBUG - Request: GET /stats
+2025-06-12 08:33:13 - [app] app - [DEBUG] DEBUG - Response: 200
+2025-06-12 08:33:13 - [app] app - [DEBUG] DEBUG - Request: GET /.well-known/appspecific/com.chrome.devtools.json
+2025-06-12 08:33:13 - [app] app - [INFO] INFO - Not Found (404): http://127.0.0.1:5000/.well-known/appspecific/com.chrome.devtools.json
+2025-06-12 08:33:13 - [app] app - [DEBUG] DEBUG - Response: 404
+2025-06-12 08:33:14 - [app] app - [DEBUG] DEBUG - Request: GET /api/notifications
+2025-06-12 08:33:14 - [app] app - [DEBUG] DEBUG - Response: 200
+2025-06-12 08:33:14 - [app] app - [DEBUG] DEBUG - Request: GET /api/session/status
+2025-06-12 08:33:14 - [app] app - [DEBUG] DEBUG - Request: GET /api/user/settings
+2025-06-12 08:33:14 - [app] app - [DEBUG] DEBUG - Response: 500
+2025-06-12 08:33:14 - [app] app - [DEBUG] DEBUG - Response: 200
+2025-06-12 08:33:16 - [app] app - [DEBUG] DEBUG - Request: GET /request
+2025-06-12 08:33:16 - [app] app - [INFO] INFO - Locating template 'guest_request.html':
+    1: trying loader of application '__main__'
+       class: jinja2.loaders.FileSystemLoader
+       encoding: 'utf-8'
+       followlinks: False
+       searchpath:
+         - C:\Users\TTOMCZA.EMEA\Dev\Projektarbeit-MYP\backend\templates
+       -> found ('C:\\Users\\TTOMCZA.EMEA\\Dev\\Projektarbeit-MYP\\backend\\templates\\guest_request.html')
+2025-06-12 08:33:16 - [app] app - [DEBUG] DEBUG - Response: 200
+2025-06-12 08:33:16 - [app] app - [ERROR] ERROR - Fehler beim Laden des Benutzers 1: (sqlite3.InterfaceError) bad parameter or other API misuse
+[SQL: SELECT users.id AS users_id, users.email AS users_email, users.username AS users_username, users.password_hash AS users_password_hash, users.name AS users_name, users.role AS users_role, users.active AS users_active, users.created_at AS users_created_at, users.last_login AS users_last_login, users.updated_at AS users_updated_at, users.settings AS users_settings, users.last_activity AS users_last_activity, users.department AS users_department, users.position AS users_position, users.phone AS users_phone, users.bio AS users_bio, users.theme_preference AS users_theme_preference, users.language_preference AS users_language_preference, users.email_notifications AS users_email_notifications, users.browser_notifications AS users_browser_notifications, users.dashboard_layout AS users_dashboard_layout, users.compact_mode AS users_compact_mode, users.show_completed_jobs AS users_show_completed_jobs, users.auto_refresh_interval AS users_auto_refresh_interval, users.auto_logout_timeout AS users_auto_logout_timeout 
+FROM users 
+WHERE users.id = ?
+ LIMIT ? OFFSET ?]
+[parameters: (1, 1, 0)]
+(Background on this error at: https://sqlalche.me/e/20/rvf5)
+2025-06-12 08:33:16 - [app] app - [DEBUG] DEBUG - Request: GET /.well-known/appspecific/com.chrome.devtools.json
+2025-06-12 08:33:16 - [app] app - [INFO] INFO - Not Found (404): http://127.0.0.1:5000/.well-known/appspecific/com.chrome.devtools.json
+2025-06-12 08:33:16 - [app] app - [DEBUG] DEBUG - Response: 404
+2025-06-12 08:33:17 - [app] app - [DEBUG] DEBUG - Request: GET /api/notifications
+2025-06-12 08:33:17 - [app] app - [DEBUG] DEBUG - Response: 200
+2025-06-12 08:33:17 - [app] app - [DEBUG] DEBUG - Request: GET /api/session/status
+2025-06-12 08:33:17 - [app] app - [DEBUG] DEBUG - Request: GET /api/user/settings
+2025-06-12 08:33:17 - [app] app - [DEBUG] DEBUG - Response: 500
+2025-06-12 08:33:17 - [app] app - [DEBUG] DEBUG - Response: 200
+2025-06-12 08:33:21 - [app] app - [DEBUG] DEBUG - Request: POST /request
+2025-06-12 08:33:21 - [app] app - [INFO] INFO - OTP generiert für Guest Request 1
+2025-06-12 08:33:21 - [app] app - [DEBUG] DEBUG - Response: 302
+2025-06-12 08:33:21 - [app] app - [DEBUG] DEBUG - Request: GET /request/1
+2025-06-12 08:33:21 - [app] app - [INFO] INFO - Locating template 'guest_status.html':
+    1: trying loader of application '__main__'
+       class: jinja2.loaders.FileSystemLoader
+       encoding: 'utf-8'
+       followlinks: False
+       searchpath:
+         - C:\Users\TTOMCZA.EMEA\Dev\Projektarbeit-MYP\backend\templates
+       -> found ('C:\\Users\\TTOMCZA.EMEA\\Dev\\Projektarbeit-MYP\\backend\\templates\\guest_status.html')
+2025-06-12 08:33:21 - [app] app - [DEBUG] DEBUG - Response: 200
+2025-06-12 08:33:28 - [app] app - [DEBUG] DEBUG - Request: GET /request/1
+2025-06-12 08:33:28 - [app] app - [DEBUG] DEBUG - Response: 200
+2025-06-12 08:33:28 - [app] app - [DEBUG] DEBUG - Request: GET /.well-known/appspecific/com.chrome.devtools.json
+2025-06-12 08:33:28 - [app] app - [INFO] INFO - Not Found (404): http://127.0.0.1:5000/.well-known/appspecific/com.chrome.devtools.json
+2025-06-12 08:33:28 - [app] app - [DEBUG] DEBUG - Response: 404
+2025-06-12 08:33:28 - [app] app - [DEBUG] DEBUG - Request: GET /api/notifications
+2025-06-12 08:33:28 - [app] app - [DEBUG] DEBUG - Response: 200
+2025-06-12 08:33:28 - [app] app - [DEBUG] DEBUG - Request: GET /api/session/status
+2025-06-12 08:33:28 - [app] app - [DEBUG] DEBUG - Request: GET /api/user/settings
+2025-06-12 08:33:28 - [app] app - [DEBUG] DEBUG - Response: 500
+2025-06-12 08:33:28 - [app] app - [DEBUG] DEBUG - Response: 200
+2025-06-12 08:33:35 - [app] app - [DEBUG] DEBUG - Request: GET /admin/
+2025-06-12 08:33:35 - [app] app - [INFO] INFO - Locating template 'admin.html':
+    1: trying loader of application '__main__'
+       class: jinja2.loaders.FileSystemLoader
+       encoding: 'utf-8'
+       followlinks: False
+       searchpath:
+         - C:\Users\TTOMCZA.EMEA\Dev\Projektarbeit-MYP\backend\templates
+       -> found ('C:\\Users\\TTOMCZA.EMEA\\Dev\\Projektarbeit-MYP\\backend\\templates\\admin.html')
+2025-06-12 08:33:35 - [app] app - [DEBUG] DEBUG - Response: 200
+2025-06-12 08:33:35 - [app] app - [DEBUG] DEBUG - Request: GET /.well-known/appspecific/com.chrome.devtools.json
+2025-06-12 08:33:35 - [app] app - [INFO] INFO - Not Found (404): http://127.0.0.1:5000/.well-known/appspecific/com.chrome.devtools.json
+2025-06-12 08:33:35 - [app] app - [DEBUG] DEBUG - Response: 404
+2025-06-12 08:33:35 - [app] app - [DEBUG] DEBUG - Request: GET /api/notifications
+2025-06-12 08:33:35 - [app] app - [DEBUG] DEBUG - Response: 200
+2025-06-12 08:33:35 - [app] app - [DEBUG] DEBUG - Request: GET /api/stats
+2025-06-12 08:33:35 - [app] app - [INFO] INFO - Not Found (404): http://127.0.0.1:5000/api/stats
+2025-06-12 08:33:35 - [app] app - [DEBUG] DEBUG - Request: GET /api/session/status
+2025-06-12 08:33:35 - [app] app - [DEBUG] DEBUG - Request: GET /api/printers/monitor/live-status
+2025-06-12 08:33:35 - [app] app - [DEBUG] DEBUG - Response: 404
+2025-06-12 08:33:35 - [app] app - [DEBUG] DEBUG - Request: GET /api/user/settings
+2025-06-12 08:33:35 - [app] app - [DEBUG] DEBUG - Response: 500
+2025-06-12 08:33:36 - [app] app - [DEBUG] DEBUG - Response: 500
+2025-06-12 08:33:36 - [app] app - [DEBUG] DEBUG - Response: 200
+2025-06-12 08:33:36 - [app] app - [DEBUG] DEBUG - Request: GET /api/admin/system-health
+2025-06-12 08:33:36 - [app] app - [INFO] INFO - Not Found (404): http://127.0.0.1:5000/api/admin/system-health
+2025-06-12 08:33:36 - [app] app - [DEBUG] DEBUG - Response: 404
+2025-06-12 08:33:38 - [app] app - [DEBUG] DEBUG - Request: GET /admin/logs
+2025-06-12 08:33:38 - [app] app - [DEBUG] DEBUG - Response: 200
+2025-06-12 08:33:38 - [app] app - [DEBUG] DEBUG - Request: GET /.well-known/appspecific/com.chrome.devtools.json
+2025-06-12 08:33:38 - [app] app - [INFO] INFO - Not Found (404): http://127.0.0.1:5000/.well-known/appspecific/com.chrome.devtools.json
+2025-06-12 08:33:38 - [app] app - [DEBUG] DEBUG - Response: 404
+2025-06-12 08:33:39 - [app] app - [DEBUG] DEBUG - Request: GET /api/notifications
+2025-06-12 08:33:39 - [app] app - [DEBUG] DEBUG - Response: 200
+2025-06-12 08:33:39 - [app] app - [DEBUG] DEBUG - Request: GET /api/stats
+2025-06-12 08:33:39 - [app] app - [DEBUG] DEBUG - Request: GET /api/printers/monitor/live-status
+2025-06-12 08:33:39 - [app] app - [INFO] INFO - Not Found (404): http://127.0.0.1:5000/api/stats
+2025-06-12 08:33:39 - [app] app - [DEBUG] DEBUG - Request: GET /api/session/status
+2025-06-12 08:33:39 - [app] app - [DEBUG] DEBUG - Request: GET /api/user/settings
+2025-06-12 08:33:39 - [app] app - [DEBUG] DEBUG - Response: 404
+2025-06-12 08:33:39 - [app] app - [DEBUG] DEBUG - Response: 302
+2025-06-12 08:33:39 - [app] app - [DEBUG] DEBUG - Response: 500
+2025-06-12 08:33:39 - [app] app - [DEBUG] DEBUG - Response: 500
+2025-06-12 08:33:39 - [app] app - [DEBUG] DEBUG - Request: GET /api/admin/system-health
+2025-06-12 08:33:39 - [app] app - [DEBUG] DEBUG - Request: GET /auth/login
+2025-06-12 08:33:39 - [app] app - [INFO] INFO - Not Found (404): http://127.0.0.1:5000/api/admin/system-health
+2025-06-12 08:33:39 - [app] app - [DEBUG] DEBUG - Response: 404
+2025-06-12 08:33:39 - [app] app - [DEBUG] DEBUG - Response: 302
+2025-06-12 08:33:39 - [app] app - [DEBUG] DEBUG - Request: GET /
+2025-06-12 08:33:39 - [app] app - [DEBUG] DEBUG - Response: 302
+2025-06-12 08:33:39 - [app] app - [DEBUG] DEBUG - Request: GET /admin/api/logs
+2025-06-12 08:33:39 - [app] app - [DEBUG] DEBUG - Response: 200
+2025-06-12 08:33:39 - [app] app - [DEBUG] DEBUG - Request: GET /dashboard
+2025-06-12 08:33:39 - [app] app - [INFO] INFO - Locating template 'dashboard.html':
+    1: trying loader of application '__main__'
+       class: jinja2.loaders.FileSystemLoader
+       encoding: 'utf-8'
+       followlinks: False
+       searchpath:
+         - C:\Users\TTOMCZA.EMEA\Dev\Projektarbeit-MYP\backend\templates
+       -> found ('C:\\Users\\TTOMCZA.EMEA\\Dev\\Projektarbeit-MYP\\backend\\templates\\dashboard.html')
+2025-06-12 08:33:39 - [app] app - [DEBUG] DEBUG - Response: 200
+2025-06-12 08:33:40 - [app] app - [DEBUG] DEBUG - Request: GET /admin/api/logs
+2025-06-12 08:33:40 - [app] app - [DEBUG] DEBUG - Response: 200
+2025-06-12 08:33:42 - [app] app - [DEBUG] DEBUG - Request: GET /admin/guest-requests
+2025-06-12 08:33:42 - [app] app - [INFO] INFO - Locating template 'admin_guest_requests.html':
+    1: trying loader of application '__main__'
+       class: jinja2.loaders.FileSystemLoader
+       encoding: 'utf-8'
+       followlinks: False
+       searchpath:
+         - C:\Users\TTOMCZA.EMEA\Dev\Projektarbeit-MYP\backend\templates
+       -> found ('C:\\Users\\TTOMCZA.EMEA\\Dev\\Projektarbeit-MYP\\backend\\templates\\admin_guest_requests.html')
+2025-06-12 08:33:42 - [app] app - [DEBUG] DEBUG - Response: 200
+2025-06-12 08:33:42 - [app] app - [DEBUG] DEBUG - Request: GET /.well-known/appspecific/com.chrome.devtools.json
+2025-06-12 08:33:42 - [app] app - [INFO] INFO - Not Found (404): http://127.0.0.1:5000/.well-known/appspecific/com.chrome.devtools.json
+2025-06-12 08:33:42 - [app] app - [DEBUG] DEBUG - Response: 404
+2025-06-12 08:33:42 - [app] app - [DEBUG] DEBUG - Request: GET /api/notifications
+2025-06-12 08:33:42 - [app] app - [DEBUG] DEBUG - Response: 200
+2025-06-12 08:33:42 - [app] app - [DEBUG] DEBUG - Request: GET /api/printers/monitor/live-status
+2025-06-12 08:33:42 - [app] app - [DEBUG] DEBUG - Request: GET /api/session/status
+2025-06-12 08:33:42 - [app] app - [DEBUG] DEBUG - Request: GET /api/user/settings
+2025-06-12 08:33:42 - [app] app - [DEBUG] DEBUG - Request: GET /api/admin/guest-requests
+2025-06-12 08:33:42 - [app] app - [DEBUG] DEBUG - Response: 500
+2025-06-12 08:33:42 - [app] app - [DEBUG] DEBUG - Response: 500
+2025-06-12 08:33:42 - [app] app - [INFO] INFO - Not Found (404): http://127.0.0.1:5000/api/admin/guest-requests
+2025-06-12 08:33:42 - [app] app - [DEBUG] DEBUG - Response: 404
+2025-06-12 08:33:42 - [app] app - [DEBUG] DEBUG - Response: 200
+2025-06-12 08:34:04 - [app] app - [INFO] INFO - [SHUTDOWN] 🧹 Cleanup wird ausgeführt...
+2025-06-12 08:34:04 - [app] app - [INFO] INFO - [SHUTDOWN] ✅ Queue Manager gestoppt
+2025-06-12 08:34:04 - [app] app - [ERROR] ERROR - [SHUTDOWN] ❌ Cleanup-Fehler: 'BackgroundTaskScheduler' object has no attribute 'shutdown'
+2025-06-12 08:34:05 - [app] app - [WARNING] WARNING - DatabaseCleanupManager nicht verfügbar - Fallback auf Legacy-Cleanup
+2025-06-12 08:34:05 - [app] app - [INFO] INFO - Optimierte SQLite-Engine erstellt: backend/database/myp.db
+2025-06-12 08:34:06 - [app] app - [INFO] INFO - [CONFIG] Erkannte Umgebung: development
+2025-06-12 08:34:06 - [app] app - [INFO] INFO - [CONFIG] Production-Modus: False
+2025-06-12 08:34:06 - [app] app - [INFO] INFO - [CONFIG] Verwende Development-Konfiguration
+2025-06-12 08:34:06 - [app] app - [INFO] INFO - [DEVELOPMENT] Aktiviere Development-Konfiguration
+2025-06-12 08:34:06 - [app] app - [INFO] INFO - [DEVELOPMENT] ✅ MYP Development Environment Konfiguration aktiviert
+2025-06-12 08:34:06 - [app] app - [INFO] INFO - [DEVELOPMENT] ✅ Environment: Development/Testing
+2025-06-12 08:34:06 - [app] app - [INFO] INFO - [DEVELOPMENT] ✅ Debug Mode: True
+2025-06-12 08:34:06 - [app] app - [INFO] INFO - [DEVELOPMENT] ✅ SQL Echo: True
+2025-06-12 08:34:06 - [app] app - [INFO] INFO - [STARTUP] 🚀 Starte MYP DEVELOPMENT-Umgebung
+2025-06-12 08:34:06 - [app] app - [INFO] INFO - [STARTUP] 🏢 Mercedes-Benz TBA Marienfelde
+2025-06-12 08:34:06 - [app] app - [INFO] INFO - [STARTUP] 🔒 Air-Gapped: True
+2025-06-12 08:34:06 - [app] app - [INFO] INFO - [STARTUP] Initialisiere Datenbank...
+2025-06-12 08:34:06 - [app] app - [INFO] INFO - SQLite für Raspberry Pi optimiert (reduzierte Cache-Größe, SD-Karten I/O)
+2025-06-12 08:34:06 - [app] app - [INFO] INFO - Datenbank mit Optimierungen initialisiert
+2025-06-12 08:34:06 - [app] app - [INFO] INFO - [STARTUP] ✅ Datenbank initialisiert
+2025-06-12 08:34:06 - [app] app - [INFO] INFO - [STARTUP] Prüfe Initial-Admin...
+2025-06-12 08:34:07 - [app] app - [INFO] INFO - Admin-Benutzer admin (admin@mercedes-benz.com) existiert bereits. Passwort wurde zurückgesetzt.
+2025-06-12 08:34:07 - [app] app - [INFO] INFO - [STARTUP] ✅ Admin-Benutzer geprüft
+2025-06-12 08:34:07 - [app] app - [INFO] INFO - [STARTUP] Starte Queue Manager...
+2025-06-12 08:34:07 - [app] app - [INFO] INFO - [STARTUP] ✅ Queue Manager gestartet
+2025-06-12 08:34:07 - [app] app - [INFO] INFO - [STARTUP] Starte Job Scheduler...
+2025-06-12 08:34:07 - [app] app - [INFO] INFO - [STARTUP] ✅ Job Scheduler gestartet
+2025-06-12 08:34:07 - [app] app - [INFO] INFO - [STARTUP] 🌐 Server startet auf http://0.0.0.0:5000
+2025-06-12 08:34:12 - [app] app - [INFO] INFO - Not Found (404): http://127.0.0.1:5000/api/admin/guest-requests
diff --git a/backend/logs/calendar/calendar.log b/backend/logs/calendar/calendar.log
index e69de29bb..d80638a1f 100644
--- a/backend/logs/calendar/calendar.log
+++ b/backend/logs/calendar/calendar.log
@@ -0,0 +1 @@
+2025-06-12 08:33:05 - [calendar] calendar - [INFO] INFO - 📅 Kalender-Events abgerufen: 0 Einträge für Zeitraum 2025-06-07 22:00:00+00:00 bis 2025-06-14 22:00:00+00:00
diff --git a/backend/logs/core_system/core_system.log b/backend/logs/core_system/core_system.log
index 359d611c5..0aa5c77ff 100644
--- a/backend/logs/core_system/core_system.log
+++ b/backend/logs/core_system/core_system.log
@@ -46,3 +46,7 @@
 2025-06-12 08:32:05 - [core_system] core_system - [INFO] INFO - 📊 Massive Konsolidierung: 6 Dateien → 1 Datei (88% Reduktion)
 2025-06-12 08:32:48 - [core_system] core_system - [INFO] INFO - ✅ Core System Management Module erfolgreich initialisiert
 2025-06-12 08:32:48 - [core_system] core_system - [INFO] INFO - 📊 Massive Konsolidierung: 6 Dateien → 1 Datei (88% Reduktion)
+2025-06-12 08:32:51 - [core_system] core_system - [INFO] INFO - ✅ Core System Management Module erfolgreich initialisiert
+2025-06-12 08:32:51 - [core_system] core_system - [INFO] INFO - 📊 Massive Konsolidierung: 6 Dateien → 1 Datei (88% Reduktion)
+2025-06-12 08:34:05 - [core_system] core_system - [INFO] INFO - ✅ Core System Management Module erfolgreich initialisiert
+2025-06-12 08:34:05 - [core_system] core_system - [INFO] INFO - 📊 Massive Konsolidierung: 6 Dateien → 1 Datei (88% Reduktion)
diff --git a/backend/logs/data_management/data_management.log b/backend/logs/data_management/data_management.log
index 060a12463..75c5935cb 100644
--- a/backend/logs/data_management/data_management.log
+++ b/backend/logs/data_management/data_management.log
@@ -46,3 +46,7 @@
 2025-06-12 08:32:06 - [data_management] data_management - [INFO] INFO - 📊 Massive Konsolidierung: 3 Dateien → 1 Datei (67% Reduktion)
 2025-06-12 08:32:49 - [data_management] data_management - [INFO] INFO - ✅ Data Management Module initialisiert
 2025-06-12 08:32:49 - [data_management] data_management - [INFO] INFO - 📊 Massive Konsolidierung: 3 Dateien → 1 Datei (67% Reduktion)
+2025-06-12 08:32:51 - [data_management] data_management - [INFO] INFO - ✅ Data Management Module initialisiert
+2025-06-12 08:32:51 - [data_management] data_management - [INFO] INFO - 📊 Massive Konsolidierung: 3 Dateien → 1 Datei (67% Reduktion)
+2025-06-12 08:34:05 - [data_management] data_management - [INFO] INFO - ✅ Data Management Module initialisiert
+2025-06-12 08:34:05 - [data_management] data_management - [INFO] INFO - 📊 Massive Konsolidierung: 3 Dateien → 1 Datei (67% Reduktion)
diff --git a/backend/logs/guest/guest.log b/backend/logs/guest/guest.log
index 4bfa9028b..f799078f1 100644
--- a/backend/logs/guest/guest.log
+++ b/backend/logs/guest/guest.log
@@ -3,3 +3,4 @@
 FROM users JOIN user_permissions ON users.id = user_permissions.user_id 
 WHERE user_permissions.can_approve_jobs = 1]
 (Background on this error at: https://sqlalche.me/e/20/e3q8)
+2025-06-12 08:33:21 - [guest] guest - [INFO] INFO - Neue Gastanfrage erstellt: ID 1, Name: Till Tomczak, OTP generiert
diff --git a/backend/logs/hardware_integration/hardware_integration.log b/backend/logs/hardware_integration/hardware_integration.log
index 6e4c2c6cb..8f4e199eb 100644
--- a/backend/logs/hardware_integration/hardware_integration.log
+++ b/backend/logs/hardware_integration/hardware_integration.log
@@ -98,3 +98,11 @@
 2025-06-12 08:32:49 - [hardware_integration] hardware_integration - [INFO] INFO - ✅ Printer Monitor initialisiert
 2025-06-12 08:32:49 - [hardware_integration] hardware_integration - [INFO] INFO - ✅ Hardware Integration Module initialisiert
 2025-06-12 08:32:49 - [hardware_integration] hardware_integration - [INFO] INFO - 📊 Massive Konsolidierung: 2 Dateien → 1 Datei (50% Reduktion)
+2025-06-12 08:32:51 - [hardware_integration] hardware_integration - [INFO] INFO - ✅ PyP100 (TP-Link Tapo) verfügbar
+2025-06-12 08:32:51 - [hardware_integration] hardware_integration - [INFO] INFO - ✅ Printer Monitor initialisiert
+2025-06-12 08:32:51 - [hardware_integration] hardware_integration - [INFO] INFO - ✅ Hardware Integration Module initialisiert
+2025-06-12 08:32:51 - [hardware_integration] hardware_integration - [INFO] INFO - 📊 Massive Konsolidierung: 2 Dateien → 1 Datei (50% Reduktion)
+2025-06-12 08:34:05 - [hardware_integration] hardware_integration - [INFO] INFO - ✅ PyP100 (TP-Link Tapo) verfügbar
+2025-06-12 08:34:05 - [hardware_integration] hardware_integration - [INFO] INFO - ✅ Printer Monitor initialisiert
+2025-06-12 08:34:05 - [hardware_integration] hardware_integration - [INFO] INFO - ✅ Hardware Integration Module initialisiert
+2025-06-12 08:34:05 - [hardware_integration] hardware_integration - [INFO] INFO - 📊 Massive Konsolidierung: 2 Dateien → 1 Datei (50% Reduktion)
diff --git a/backend/logs/job_queue_system/job_queue_system.log b/backend/logs/job_queue_system/job_queue_system.log
index 4a36871f5..77a0e3368 100644
--- a/backend/logs/job_queue_system/job_queue_system.log
+++ b/backend/logs/job_queue_system/job_queue_system.log
@@ -92,3 +92,10 @@
 2025-06-12 08:32:49 - [job_queue_system] job_queue_system - [INFO] INFO - ✅ Job & Queue System Module initialisiert
 2025-06-12 08:32:49 - [job_queue_system] job_queue_system - [INFO] INFO - 📊 MASSIVE Konsolidierung: 4 Dateien → 1 Datei (75% Reduktion)
 2025-06-12 08:32:50 - [job_queue_system] job_queue_system - [INFO] INFO - Queue Manager gestartet (Legacy-Kompatibilität)
+2025-06-12 08:32:51 - [job_queue_system] job_queue_system - [INFO] INFO - ✅ Job & Queue System Module initialisiert
+2025-06-12 08:32:51 - [job_queue_system] job_queue_system - [INFO] INFO - 📊 MASSIVE Konsolidierung: 4 Dateien → 1 Datei (75% Reduktion)
+2025-06-12 08:32:54 - [job_queue_system] job_queue_system - [INFO] INFO - Queue Manager gestartet (Legacy-Kompatibilität)
+2025-06-12 08:34:04 - [job_queue_system] job_queue_system - [INFO] INFO - Queue Manager gestoppt (Legacy-Kompatibilität)
+2025-06-12 08:34:05 - [job_queue_system] job_queue_system - [INFO] INFO - ✅ Job & Queue System Module initialisiert
+2025-06-12 08:34:05 - [job_queue_system] job_queue_system - [INFO] INFO - 📊 MASSIVE Konsolidierung: 4 Dateien → 1 Datei (75% Reduktion)
+2025-06-12 08:34:07 - [job_queue_system] job_queue_system - [INFO] INFO - Queue Manager gestartet (Legacy-Kompatibilität)
diff --git a/backend/logs/jobs/jobs.log b/backend/logs/jobs/jobs.log
index 750356c6d..bebd64345 100644
--- a/backend/logs/jobs/jobs.log
+++ b/backend/logs/jobs/jobs.log
@@ -55,3 +55,5 @@ TypeError: unsupported operand type(s) for +: 'NoneType' and 'int'
 2025-06-12 08:20:59 - [jobs] jobs - [INFO] INFO - ✅ Jobs erfolgreich abgerufen: 0 von 0 (Seite 1)
 2025-06-12 08:21:14 - [jobs] jobs - [INFO] INFO - 📋 Jobs-Abfrage gestartet von Benutzer 1 (Admin: True)
 2025-06-12 08:21:14 - [jobs] jobs - [INFO] INFO - ✅ Jobs erfolgreich abgerufen: 0 von 0 (Seite 1)
+2025-06-12 08:32:55 - [jobs] jobs - [INFO] INFO - 📋 Jobs-Abfrage gestartet von Benutzer 1 (Admin: True)
+2025-06-12 08:32:55 - [jobs] jobs - [INFO] INFO - ✅ Jobs erfolgreich abgerufen: 0 von 0 (Seite 1)
diff --git a/backend/logs/monitoring_analytics/monitoring_analytics.log b/backend/logs/monitoring_analytics/monitoring_analytics.log
index 9b414783c..28fe0e48a 100644
--- a/backend/logs/monitoring_analytics/monitoring_analytics.log
+++ b/backend/logs/monitoring_analytics/monitoring_analytics.log
@@ -46,3 +46,7 @@
 2025-06-12 08:32:07 - [monitoring_analytics] monitoring_analytics - [INFO] INFO - 📊 MASSIVE Konsolidierung: 3 Dateien → 1 Datei (67% Reduktion)
 2025-06-12 08:32:50 - [monitoring_analytics] monitoring_analytics - [INFO] INFO - ✅ Monitoring & Analytics Module initialisiert
 2025-06-12 08:32:50 - [monitoring_analytics] monitoring_analytics - [INFO] INFO - 📊 MASSIVE Konsolidierung: 3 Dateien → 1 Datei (67% Reduktion)
+2025-06-12 08:32:53 - [monitoring_analytics] monitoring_analytics - [INFO] INFO - ✅ Monitoring & Analytics Module initialisiert
+2025-06-12 08:32:53 - [monitoring_analytics] monitoring_analytics - [INFO] INFO - 📊 MASSIVE Konsolidierung: 3 Dateien → 1 Datei (67% Reduktion)
+2025-06-12 08:34:06 - [monitoring_analytics] monitoring_analytics - [INFO] INFO - ✅ Monitoring & Analytics Module initialisiert
+2025-06-12 08:34:06 - [monitoring_analytics] monitoring_analytics - [INFO] INFO - 📊 MASSIVE Konsolidierung: 3 Dateien → 1 Datei (67% Reduktion)
diff --git a/backend/logs/printers/printers.log b/backend/logs/printers/printers.log
index 84245549b..a90e8f118 100644
--- a/backend/logs/printers/printers.log
+++ b/backend/logs/printers/printers.log
@@ -19,3 +19,15 @@
 2025-06-12 08:32:29 - [printers] printers - [INFO] INFO - 🔄 Live-Status-Abfrage von Benutzer Administrator (ID: 1)
 2025-06-12 08:32:29 - [printers] printers - [ERROR] ERROR - ❌ Fehler bei Live-Status-Abfrage: PrinterMonitor.get_live_printer_status() got an unexpected keyword argument 'use_session_cache'
 2025-06-12 08:32:29 - [printers] printers - [INFO] INFO - [OK] API-Live-Drucker-Status-Abfrage 'get_live_printer_status' erfolgreich in 0.58ms
+2025-06-12 08:33:36 - [printers] printers - [INFO] INFO - 🔄 Live-Status-Abfrage von Benutzer Administrator (ID: 1)
+2025-06-12 08:33:36 - [printers] printers - [ERROR] ERROR - ❌ Fehler bei Live-Status-Abfrage: PrinterMonitor.get_live_printer_status() got an unexpected keyword argument 'use_session_cache'
+2025-06-12 08:33:36 - [printers] printers - [INFO] INFO - [OK] API-Live-Drucker-Status-Abfrage 'get_live_printer_status' erfolgreich in 2.06ms
+2025-06-12 08:33:39 - [printers] printers - [INFO] INFO - 🔄 Live-Status-Abfrage von Benutzer Administrator (ID: 1)
+2025-06-12 08:33:39 - [printers] printers - [ERROR] ERROR - ❌ Fehler bei Live-Status-Abfrage: PrinterMonitor.get_live_printer_status() got an unexpected keyword argument 'use_session_cache'
+2025-06-12 08:33:39 - [printers] printers - [INFO] INFO - [OK] API-Live-Drucker-Status-Abfrage 'get_live_printer_status' erfolgreich in 1.04ms
+2025-06-12 08:33:42 - [printers] printers - [INFO] INFO - 🔄 Live-Status-Abfrage von Benutzer Administrator (ID: 1)
+2025-06-12 08:33:42 - [printers] printers - [ERROR] ERROR - ❌ Fehler bei Live-Status-Abfrage: PrinterMonitor.get_live_printer_status() got an unexpected keyword argument 'use_session_cache'
+2025-06-12 08:33:42 - [printers] printers - [INFO] INFO - [OK] API-Live-Drucker-Status-Abfrage 'get_live_printer_status' erfolgreich in 0.85ms
+2025-06-12 08:34:12 - [printers] printers - [INFO] INFO - 🔄 Live-Status-Abfrage von Benutzer Administrator (ID: 1)
+2025-06-12 08:34:12 - [printers] printers - [ERROR] ERROR - ❌ Fehler bei Live-Status-Abfrage: PrinterMonitor.get_live_printer_status() got an unexpected keyword argument 'use_session_cache'
+2025-06-12 08:34:12 - [printers] printers - [INFO] INFO - [OK] API-Live-Drucker-Status-Abfrage 'get_live_printer_status' erfolgreich in 0.85ms
diff --git a/backend/logs/scheduler/scheduler.log b/backend/logs/scheduler/scheduler.log
index dffc68aff..25ef94b4c 100644
--- a/backend/logs/scheduler/scheduler.log
+++ b/backend/logs/scheduler/scheduler.log
@@ -68,3 +68,9 @@
 2025-06-12 08:32:49 - [scheduler] scheduler - [INFO] INFO - Task check_jobs registriert: Intervall 30s, Enabled: True
 2025-06-12 08:32:50 - [scheduler] scheduler - [INFO] INFO - Scheduler-Thread gestartet
 2025-06-12 08:32:50 - [scheduler] scheduler - [INFO] INFO - Scheduler gestartet
+2025-06-12 08:32:51 - [scheduler] scheduler - [INFO] INFO - Task check_jobs registriert: Intervall 30s, Enabled: True
+2025-06-12 08:32:54 - [scheduler] scheduler - [INFO] INFO - Scheduler-Thread gestartet
+2025-06-12 08:32:54 - [scheduler] scheduler - [INFO] INFO - Scheduler gestartet
+2025-06-12 08:34:05 - [scheduler] scheduler - [INFO] INFO - Task check_jobs registriert: Intervall 30s, Enabled: True
+2025-06-12 08:34:07 - [scheduler] scheduler - [INFO] INFO - Scheduler-Thread gestartet
+2025-06-12 08:34:07 - [scheduler] scheduler - [INFO] INFO - Scheduler gestartet
diff --git a/backend/logs/security_suite/security_suite.log b/backend/logs/security_suite/security_suite.log
index aac4fcdc0..303147a45 100644
--- a/backend/logs/security_suite/security_suite.log
+++ b/backend/logs/security_suite/security_suite.log
@@ -70,3 +70,9 @@
 2025-06-12 08:32:49 - [security_suite] security_suite - [INFO] INFO - ✅ Security Suite Module initialisiert
 2025-06-12 08:32:49 - [security_suite] security_suite - [INFO] INFO - 📊 Massive Konsolidierung: 3 Dateien → 1 Datei (67% Reduktion)
 2025-06-12 08:32:50 - [security_suite] security_suite - [INFO] INFO - 🔒 Security Suite initialisiert
+2025-06-12 08:32:51 - [security_suite] security_suite - [INFO] INFO - ✅ Security Suite Module initialisiert
+2025-06-12 08:32:51 - [security_suite] security_suite - [INFO] INFO - 📊 Massive Konsolidierung: 3 Dateien → 1 Datei (67% Reduktion)
+2025-06-12 08:32:53 - [security_suite] security_suite - [INFO] INFO - 🔒 Security Suite initialisiert
+2025-06-12 08:34:05 - [security_suite] security_suite - [INFO] INFO - ✅ Security Suite Module initialisiert
+2025-06-12 08:34:05 - [security_suite] security_suite - [INFO] INFO - 📊 Massive Konsolidierung: 3 Dateien → 1 Datei (67% Reduktion)
+2025-06-12 08:34:06 - [security_suite] security_suite - [INFO] INFO - 🔒 Security Suite initialisiert
diff --git a/backend/logs/sessions/sessions.log b/backend/logs/sessions/sessions.log
index 4c1f29ffb..66e5f4d24 100644
--- a/backend/logs/sessions/sessions.log
+++ b/backend/logs/sessions/sessions.log
@@ -8,3 +8,12 @@
 2025-06-12 08:31:50 - [sessions] sessions - [ERROR] ERROR - Fehler beim Abrufen des Session-Status: 'int' object has no attribute 'total_seconds'
 2025-06-12 08:31:56 - [sessions] sessions - [ERROR] ERROR - Fehler beim Abrufen des Session-Status: 'int' object has no attribute 'total_seconds'
 2025-06-12 08:31:59 - [sessions] sessions - [ERROR] ERROR - Fehler beim Abrufen des Session-Status: 'int' object has no attribute 'total_seconds'
+2025-06-12 08:32:55 - [sessions] sessions - [ERROR] ERROR - Fehler beim Abrufen des Session-Status: 'int' object has no attribute 'total_seconds'
+2025-06-12 08:32:57 - [sessions] sessions - [ERROR] ERROR - Fehler beim Abrufen des Session-Status: 'int' object has no attribute 'total_seconds'
+2025-06-12 08:33:05 - [sessions] sessions - [ERROR] ERROR - Fehler beim Abrufen des Session-Status: 'int' object has no attribute 'total_seconds'
+2025-06-12 08:33:14 - [sessions] sessions - [ERROR] ERROR - Fehler beim Abrufen des Session-Status: 'int' object has no attribute 'total_seconds'
+2025-06-12 08:33:17 - [sessions] sessions - [ERROR] ERROR - Fehler beim Abrufen des Session-Status: 'int' object has no attribute 'total_seconds'
+2025-06-12 08:33:28 - [sessions] sessions - [ERROR] ERROR - Fehler beim Abrufen des Session-Status: 'int' object has no attribute 'total_seconds'
+2025-06-12 08:33:35 - [sessions] sessions - [ERROR] ERROR - Fehler beim Abrufen des Session-Status: 'int' object has no attribute 'total_seconds'
+2025-06-12 08:33:39 - [sessions] sessions - [ERROR] ERROR - Fehler beim Abrufen des Session-Status: 'int' object has no attribute 'total_seconds'
+2025-06-12 08:33:42 - [sessions] sessions - [ERROR] ERROR - Fehler beim Abrufen des Session-Status: 'int' object has no attribute 'total_seconds'
diff --git a/backend/logs/startup/startup.log b/backend/logs/startup/startup.log
index c8f5dc956..334cd571f 100644
--- a/backend/logs/startup/startup.log
+++ b/backend/logs/startup/startup.log
@@ -214,3 +214,21 @@
 2025-06-12 08:32:50 - [startup] startup - [INFO] INFO - 🪟 Windows-Modus: Aktiviert
 2025-06-12 08:32:50 - [startup] startup - [INFO] INFO - 🔒 Windows-sichere Log-Rotation: Aktiviert
 2025-06-12 08:32:50 - [startup] startup - [INFO] INFO - ==================================================
+2025-06-12 08:32:53 - [startup] startup - [INFO] INFO - ==================================================
+2025-06-12 08:32:53 - [startup] startup - [INFO] INFO - [START] MYP Platform Backend wird gestartet...
+2025-06-12 08:32:53 - [startup] startup - [INFO] INFO - 🐍 Python Version: 3.13.3 (tags/v3.13.3:6280bb5, Apr  8 2025, 14:47:33) [MSC v.1943 64 bit (AMD64)]
+2025-06-12 08:32:53 - [startup] startup - [INFO] INFO - 💻 Betriebssystem: nt (win32)
+2025-06-12 08:32:53 - [startup] startup - [INFO] INFO - 📁 Arbeitsverzeichnis: C:\Users\TTOMCZA.EMEA\Dev\Projektarbeit-MYP\backend
+2025-06-12 08:32:53 - [startup] startup - [INFO] INFO - ⏰ Startzeit: 2025-06-12T08:32:53.808641
+2025-06-12 08:32:53 - [startup] startup - [INFO] INFO - 🪟 Windows-Modus: Aktiviert
+2025-06-12 08:32:53 - [startup] startup - [INFO] INFO - 🔒 Windows-sichere Log-Rotation: Aktiviert
+2025-06-12 08:32:53 - [startup] startup - [INFO] INFO - ==================================================
+2025-06-12 08:34:06 - [startup] startup - [INFO] INFO - ==================================================
+2025-06-12 08:34:06 - [startup] startup - [INFO] INFO - [START] MYP Platform Backend wird gestartet...
+2025-06-12 08:34:06 - [startup] startup - [INFO] INFO - 🐍 Python Version: 3.13.3 (tags/v3.13.3:6280bb5, Apr  8 2025, 14:47:33) [MSC v.1943 64 bit (AMD64)]
+2025-06-12 08:34:06 - [startup] startup - [INFO] INFO - 💻 Betriebssystem: nt (win32)
+2025-06-12 08:34:06 - [startup] startup - [INFO] INFO - 📁 Arbeitsverzeichnis: C:\Users\TTOMCZA.EMEA\Dev\Projektarbeit-MYP\backend
+2025-06-12 08:34:06 - [startup] startup - [INFO] INFO - ⏰ Startzeit: 2025-06-12T08:34:06.865423
+2025-06-12 08:34:06 - [startup] startup - [INFO] INFO - 🪟 Windows-Modus: Aktiviert
+2025-06-12 08:34:06 - [startup] startup - [INFO] INFO - 🔒 Windows-sichere Log-Rotation: Aktiviert
+2025-06-12 08:34:06 - [startup] startup - [INFO] INFO - ==================================================
diff --git a/backend/logs/tapo_controller/tapo_controller.log b/backend/logs/tapo_controller/tapo_controller.log
index e6c66cc24..11265f512 100644
--- a/backend/logs/tapo_controller/tapo_controller.log
+++ b/backend/logs/tapo_controller/tapo_controller.log
@@ -23,3 +23,5 @@
 2025-06-12 08:31:54 - [tapo_controller] tapo_controller - [INFO] INFO - ✅ tapo controller initialisiert
 2025-06-12 08:32:06 - [tapo_controller] tapo_controller - [INFO] INFO - ✅ tapo controller initialisiert
 2025-06-12 08:32:49 - [tapo_controller] tapo_controller - [INFO] INFO - ✅ tapo controller initialisiert
+2025-06-12 08:32:51 - [tapo_controller] tapo_controller - [INFO] INFO - ✅ tapo controller initialisiert
+2025-06-12 08:34:05 - [tapo_controller] tapo_controller - [INFO] INFO - ✅ tapo controller initialisiert
diff --git a/backend/logs/user/user.log b/backend/logs/user/user.log
index 3c87b8f5d..4a7126d29 100644
--- a/backend/logs/user/user.log
+++ b/backend/logs/user/user.log
@@ -10,3 +10,11 @@
 2025-06-12 08:31:50 - [user] user - [INFO] INFO - User admin retrieved settings via API
 2025-06-12 08:31:56 - [user] user - [INFO] INFO - User admin retrieved settings via API
 2025-06-12 08:31:59 - [user] user - [INFO] INFO - User admin retrieved settings via API
+2025-06-12 08:32:55 - [user] user - [INFO] INFO - User admin retrieved settings via API
+2025-06-12 08:32:57 - [user] user - [INFO] INFO - User admin retrieved settings via API
+2025-06-12 08:33:05 - [user] user - [INFO] INFO - User admin retrieved settings via API
+2025-06-12 08:33:14 - [user] user - [INFO] INFO - User admin retrieved settings via API
+2025-06-12 08:33:17 - [user] user - [INFO] INFO - User admin retrieved settings via API
+2025-06-12 08:33:28 - [user] user - [INFO] INFO - User admin retrieved settings via API
+2025-06-12 08:33:36 - [user] user - [INFO] INFO - User admin retrieved settings via API
+2025-06-12 08:33:42 - [user] user - [INFO] INFO - User admin retrieved settings via API
diff --git a/backend/logs/utilities_collection/utilities_collection.log b/backend/logs/utilities_collection/utilities_collection.log
index 44a9e7100..760074663 100644
--- a/backend/logs/utilities_collection/utilities_collection.log
+++ b/backend/logs/utilities_collection/utilities_collection.log
@@ -50,3 +50,7 @@
 2025-06-12 08:32:05 - [utilities_collection] utilities_collection - [INFO] INFO - 🚨 ALLERLETZTE MEGA-Konsolidierung: 12+ Dateien → 1 Datei (90%+ Reduktion)
 2025-06-12 08:32:48 - [utilities_collection] utilities_collection - [INFO] INFO - ✅ Utilities Collection initialisiert
 2025-06-12 08:32:48 - [utilities_collection] utilities_collection - [INFO] INFO - 🚨 ALLERLETZTE MEGA-Konsolidierung: 12+ Dateien → 1 Datei (90%+ Reduktion)
+2025-06-12 08:32:51 - [utilities_collection] utilities_collection - [INFO] INFO - ✅ Utilities Collection initialisiert
+2025-06-12 08:32:51 - [utilities_collection] utilities_collection - [INFO] INFO - 🚨 ALLERLETZTE MEGA-Konsolidierung: 12+ Dateien → 1 Datei (90%+ Reduktion)
+2025-06-12 08:34:05 - [utilities_collection] utilities_collection - [INFO] INFO - ✅ Utilities Collection initialisiert
+2025-06-12 08:34:05 - [utilities_collection] utilities_collection - [INFO] INFO - 🚨 ALLERLETZTE MEGA-Konsolidierung: 12+ Dateien → 1 Datei (90%+ Reduktion)
diff --git a/backend/logs/windows_fixes/windows_fixes.log b/backend/logs/windows_fixes/windows_fixes.log
index aad06fd1a..f43639e90 100644
--- a/backend/logs/windows_fixes/windows_fixes.log
+++ b/backend/logs/windows_fixes/windows_fixes.log
@@ -49,3 +49,7 @@
 2025-06-12 08:32:05 - [windows_fixes] windows_fixes - [INFO] INFO - ✅ Alle Windows-Fixes erfolgreich angewendet
 2025-06-12 08:32:48 - [windows_fixes] windows_fixes - [INFO] INFO - 🔧 Wende Windows-spezifische Fixes an...
 2025-06-12 08:32:48 - [windows_fixes] windows_fixes - [INFO] INFO - ✅ Alle Windows-Fixes erfolgreich angewendet
+2025-06-12 08:32:51 - [windows_fixes] windows_fixes - [INFO] INFO - 🔧 Wende Windows-spezifische Fixes an...
+2025-06-12 08:32:51 - [windows_fixes] windows_fixes - [INFO] INFO - ✅ Alle Windows-Fixes erfolgreich angewendet
+2025-06-12 08:34:05 - [windows_fixes] windows_fixes - [INFO] INFO - 🔧 Wende Windows-spezifische Fixes an...
+2025-06-12 08:34:05 - [windows_fixes] windows_fixes - [INFO] INFO - ✅ Alle Windows-Fixes erfolgreich angewendet
diff --git a/backend/static/js/admin-guest-requests.js b/backend/static/js/admin-guest-requests.js
index fac41d888..e3206566d 100644
--- a/backend/static/js/admin-guest-requests.js
+++ b/backend/static/js/admin-guest-requests.js
@@ -93,7 +93,7 @@ async function loadGuestRequests() {
     try {
         showLoading(true);
         
-        const url = `${API_BASE_URL}/api/admin/guest-requests`;
+        const url = `${API_BASE_URL}/api/admin/requests`;
         const response = await fetch(url, {
             method: 'GET',
             headers: {
diff --git a/backend/static/js/admin-guest-requests.min.js b/backend/static/js/admin-guest-requests.min.js
index a18d27b3d..e3206566d 100644
--- a/backend/static/js/admin-guest-requests.min.js
+++ b/backend/static/js/admin-guest-requests.min.js
@@ -1,58 +1,710 @@
-let currentRequests=[];let filteredRequests=[];let currentPage=0;let totalPages=0;let totalRequests=0;let refreshInterval=null;let csrfToken='';function detectApiBaseUrl(){return'';}
-const API_BASE_URL=detectApiBaseUrl();document.addEventListener('DOMContentLoaded',function(){csrfToken=document.querySelector('meta[name="csrf-token"]')?.getAttribute('content')||'';initEventListeners();loadGuestRequests();startAutoRefresh();console.log('🎯 Admin Guest Requests Management geladen');});function initEventListeners(){const searchInput=document.getElementById('search-requests');if(searchInput){searchInput.addEventListener('input',debounce(handleSearch,300));}
-const statusFilter=document.getElementById('status-filter');if(statusFilter){statusFilter.addEventListener('change',handleFilterChange);}
-const sortOrder=document.getElementById('sort-order');if(sortOrder){sortOrder.addEventListener('change',handleSortChange);}
-const refreshBtn=document.getElementById('refresh-btn');if(refreshBtn){refreshBtn.addEventListener('click',()=>{loadGuestRequests();showNotification('🔄 Gastaufträge aktualisiert','info');});}
-const exportBtn=document.getElementById('export-btn');if(exportBtn){exportBtn.addEventListener('click',handleExport);}
-const bulkActionsBtn=document.getElementById('bulk-actions-btn');if(bulkActionsBtn){bulkActionsBtn.addEventListener('click',showBulkActionsModal);}
-const selectAllCheckbox=document.getElementById('select-all');if(selectAllCheckbox){selectAllCheckbox.addEventListener('change',handleSelectAll);}}
-async function loadGuestRequests(){try{showLoading(true);const url=`${API_BASE_URL}/api/admin/guest-requests`;const response=await fetch(url,{method:'GET',headers:{'Content-Type':'application/json','X-CSRFToken':csrfToken}});if(!response.ok){throw new Error(`HTTP ${response.status}:${response.statusText}`);}
-const data=await response.json();if(data.success){currentRequests=data.requests||[];totalRequests=data.total||0;updateStats(data.stats||{});applyFiltersAndSort();console.log(`✅ ${currentRequests.length}Gastaufträge geladen`);}else{throw new Error(data.message||'Fehler beim Laden der Gastaufträge');}}catch(error){console.error('Fehler beim Laden der Gastaufträge:',error);showNotification('❌ Fehler beim Laden der Gastaufträge: '+error.message,'error');showEmptyState();}finally{showLoading(false);}}
-function updateStats(stats){const elements={'pending-count':stats.pending||0,'approved-count':stats.approved||0,'rejected-count':stats.rejected||0,'total-count':stats.total||0};Object.entries(elements).forEach(([id,value])=>{const element=document.getElementById(id);if(element){animateCounter(element,value);}});}
-function animateCounter(element,targetValue){const currentValue=parseInt(element.textContent)||0;const difference=targetValue-currentValue;const steps=20;const stepValue=difference/steps;let step=0;const interval=setInterval(()=>{step++;const value=Math.round(currentValue+(stepValue*step));element.textContent=value;if(step>=steps){clearInterval(interval);element.textContent=targetValue;}},50);}
-function applyFiltersAndSort(){let requests=[...currentRequests];const statusFilter=document.getElementById('status-filter')?.value;if(statusFilter&&statusFilter!=='all'){requests=requests.filter(req=>req.status===statusFilter);}
-const searchTerm=document.getElementById('search-requests')?.value.toLowerCase();if(searchTerm){requests=requests.filter(req=>req.name?.toLowerCase().includes(searchTerm)||req.email?.toLowerCase().includes(searchTerm)||req.file_name?.toLowerCase().includes(searchTerm)||req.reason?.toLowerCase().includes(searchTerm));}
-const sortOrder=document.getElementById('sort-order')?.value;requests.sort((a,b)=>{switch(sortOrder){case'oldest':return new Date(a.created_at)-new Date(b.created_at);case'priority':return getPriorityValue(b)-getPriorityValue(a);case'newest':default:return new Date(b.created_at)-new Date(a.created_at);}});filteredRequests=requests;renderRequestsTable();}
-function getPriorityValue(request){const now=new Date();const created=new Date(request.created_at);const hoursOld=(now-created)/(1000*60*60);let priority=0;if(request.status==='pending')priority+=10;else if(request.status==='approved')priority+=5;if(hoursOld>24)priority+=5;else if(hoursOld>8)priority+=3;else if(hoursOld>2)priority+=1;return priority;}
-function renderRequestsTable(){const tableBody=document.getElementById('requests-table-body');const emptyState=document.getElementById('empty-state');if(!tableBody)return;if(filteredRequests.length===0){tableBody.innerHTML='';showEmptyState();return;}
-hideEmptyState();const requestsHtml=filteredRequests.map(request=>createRequestRow(request)).join('');tableBody.innerHTML=requestsHtml;addRowEventListeners();}
-function createRequestRow(request){const statusColor=getStatusColor(request.status);const priorityLevel=getPriorityLevel(request);const timeAgo=getTimeAgo(request.created_at);return`<tr class="hover:bg-slate-50 dark:hover:bg-slate-700/50 transition-colors duration-200"data-request-id="${request.id}"><td class="px-6 py-4"><input type="checkbox"class="request-checkbox rounded border-slate-300 text-blue-600 focus:ring-blue-500"
-value="${request.id}"></td><td class="px-6 py-4"><div class="flex items-center"><div class="flex-shrink-0 h-10 w-10"><div class="h-10 w-10 rounded-full bg-gradient-to-br from-blue-500 to-purple-600 flex items-center justify-center text-white font-semibold">${request.name?request.name[0].toUpperCase():'G'}</div></div><div class="ml-4"><div class="text-sm font-medium text-slate-900 dark:text-white">${escapeHtml(request.name||'Unbekannt')}</div><div class="text-sm text-slate-500 dark:text-slate-400">${escapeHtml(request.email||'Keine E-Mail')}</div></div></div></td><td class="px-6 py-4"><div class="text-sm text-slate-900 dark:text-white font-medium">${escapeHtml(request.file_name||'Keine Datei')}</div><div class="text-sm text-slate-500 dark:text-slate-400">${request.duration_minutes?`${request.duration_minutes}Min.`:'Unbekannte Dauer'}
-${request.copies?`• ${request.copies}Kopien`:''}</div>${request.reason?`<div class="text-xs text-slate-400 dark:text-slate-500 mt-1 truncate max-w-xs">${escapeHtml(request.reason)}</div>`:''}</td><td class="px-6 py-4"><span class="inline-flex items-center px-2 py-1 text-xs font-semibold rounded-full ${statusColor}"><span class="w-2 h-2 mr-1 rounded-full ${getStatusDot(request.status)}"></span>${getStatusText(request.status)}</span></td><td class="px-6 py-4"><div class="text-sm text-slate-900 dark:text-white">${timeAgo}</div><div class="text-xs text-slate-500 dark:text-slate-400">${formatDateTime(request.created_at)}</div></td><td class="px-6 py-4"><div class="flex items-center">${getPriorityBadge(priorityLevel)}
-${request.is_urgent?'<span class="ml-2 text-red-500 text-xs">🔥 Dringend</span>':''}</div></td><td class="px-6 py-4"><div class="flex items-center space-x-2"><button onclick="showRequestDetail(${request.id})"
-class="text-blue-600 hover:text-blue-900 dark:text-blue-400 dark:hover:text-blue-300 transition-colors"
-title="Details anzeigen"><svg class="w-5 h-5"fill="none"stroke="currentColor"viewBox="0 0 24 24"><path stroke-linecap="round"stroke-linejoin="round"stroke-width="2"d="M15 12a3 3 0 11-6 0 3 3 0 016 0z"/><path stroke-linecap="round"stroke-linejoin="round"stroke-width="2"d="M2.458 12C3.732 7.943 7.523 5 12 5c4.478 0 8.268 2.943 9.542 7-1.274 4.057-5.064 7-9.542 7-4.477 0-8.268-2.943-9.542-7z"/></svg></button>${request.status==='pending'?`<button onclick="approveRequest(${request.id})"
-class="text-green-600 hover:text-green-900 dark:text-green-400 dark:hover:text-green-300 transition-colors"
-title="Genehmigen"><svg class="w-5 h-5"fill="none"stroke="currentColor"viewBox="0 0 24 24"><path stroke-linecap="round"stroke-linejoin="round"stroke-width="2"d="M9 12l2 2 4-4m6 2a9 9 0 11-18 0 9 9 0 0118 0z"/></svg></button><button onclick="rejectRequest(${request.id})"
-class="text-red-600 hover:text-red-900 dark:text-red-400 dark:hover:text-red-300 transition-colors"
-title="Ablehnen"><svg class="w-5 h-5"fill="none"stroke="currentColor"viewBox="0 0 24 24"><path stroke-linecap="round"stroke-linejoin="round"stroke-width="2"d="M10 14l2-2m0 0l2-2m-2 2l-2-2m2 2l2 2m7-2a9 9 0 11-18 0 9 9 0 0118 0z"/></svg></button>`:''}<button onclick="deleteRequest(${request.id})"
-class="text-gray-600 hover:text-gray-900 dark:text-gray-400 dark:hover:text-gray-300 transition-colors"
-title="Löschen"><svg class="w-5 h-5"fill="none"stroke="currentColor"viewBox="0 0 24 24"><path stroke-linecap="round"stroke-linejoin="round"stroke-width="2"d="M19 7l-.867 12.142A2 2 0 0116.138 21H7.862a2 2 0 01-1.995-1.858L5 7m5 4v6m4-6v6m1-10V4a1 1 0 00-1-1h-4a1 1 0 00-1 1v3M4 7h16"/></svg></button></div></td></tr>`;}
-function getStatusColor(status){const colors={'pending':'bg-yellow-100 text-yellow-800 dark:bg-yellow-900/30 dark:text-yellow-300','approved':'bg-green-100 text-green-800 dark:bg-green-900/30 dark:text-green-300','rejected':'bg-red-100 text-red-800 dark:bg-red-900/30 dark:text-red-300','expired':'bg-gray-100 text-gray-800 dark:bg-gray-900/30 dark:text-gray-300'};return colors[status]||'bg-gray-100 text-gray-800 dark:bg-gray-900/30 dark:text-gray-300';}
-function getStatusDot(status){const dots={'pending':'bg-yellow-400 dark:bg-yellow-300','approved':'bg-green-400 dark:bg-green-300','rejected':'bg-red-400 dark:bg-red-300','expired':'bg-gray-400 dark:bg-gray-300'};return dots[status]||'bg-gray-400 dark:bg-gray-300';}
-function getStatusText(status){const texts={'pending':'Wartend','approved':'Genehmigt','rejected':'Abgelehnt','expired':'Abgelaufen'};return texts[status]||status;}
-function getPriorityLevel(request){const priority=getPriorityValue(request);if(priority>=15)return'high';if(priority>=8)return'medium';return'low';}
-function getPriorityBadge(level){const badges={'high':'<span class="inline-flex items-center px-2 py-1 text-xs font-medium rounded-full bg-red-100 text-red-800 dark:bg-red-900/30 dark:text-red-300">🔴 Hoch</span>','medium':'<span class="inline-flex items-center px-2 py-1 text-xs font-medium rounded-full bg-orange-100 text-orange-800 dark:bg-orange-900/30 dark:text-orange-300">🟡 Mittel</span>','low':'<span class="inline-flex items-center px-2 py-1 text-xs font-medium rounded-full bg-green-100 text-green-800 dark:bg-green-900/30 dark:text-green-300">🟢 Niedrig</span>'};return badges[level]||badges['low'];}
-async function approveRequest(requestId){if(!confirm('Möchten Sie diesen Gastauftrag wirklich genehmigen?'))return;try{showLoading(true);const url=`${API_BASE_URL}/api/guest-requests/${requestId}/approve`;const response=await fetch(url,{method:'POST',headers:{'Content-Type':'application/json','X-CSRFToken':csrfToken},body:JSON.stringify({})});const data=await response.json();if(data.success){showNotification('✅ Gastauftrag erfolgreich genehmigt','success');loadGuestRequests();}else{throw new Error(data.message||'Fehler beim Genehmigen');}}catch(error){console.error('Fehler beim Genehmigen:',error);showNotification('❌ Fehler beim Genehmigen: '+error.message,'error');}finally{showLoading(false);}}
-async function rejectRequest(requestId){const reason=prompt('Grund für die Ablehnung:');if(!reason)return;try{showLoading(true);const url=`${API_BASE_URL}/api/guest-requests/${requestId}/reject`;const response=await fetch(url,{method:'POST',headers:{'Content-Type':'application/json','X-CSRFToken':csrfToken},body:JSON.stringify({reason})});const data=await response.json();if(data.success){showNotification('✅ Gastauftrag erfolgreich abgelehnt','success');loadGuestRequests();}else{throw new Error(data.message||'Fehler beim Ablehnen');}}catch(error){console.error('Fehler beim Ablehnen:',error);showNotification('❌ Fehler beim Ablehnen: '+error.message,'error');}finally{showLoading(false);}}
-async function deleteRequest(requestId){if(!confirm('Möchten Sie diesen Gastauftrag wirklich löschen? Diese Aktion kann nicht rückgängig gemacht werden.'))return;try{showLoading(true);const url=`${API_BASE_URL}/api/guest-requests/${requestId}`;const response=await fetch(url,{method:'DELETE',headers:{'Content-Type':'application/json','X-CSRFToken':csrfToken}});const data=await response.json();if(data.success){showNotification('✅ Gastauftrag erfolgreich gelöscht','success');loadGuestRequests();}else{throw new Error(data.message||'Fehler beim Löschen');}}catch(error){console.error('Fehler beim Löschen:',error);showNotification('❌ Fehler beim Löschen: '+error.message,'error');}finally{showLoading(false);}}
-function showRequestDetail(requestId){const request=currentRequests.find(req=>req.id===requestId);if(!request)return;const modal=document.getElementById('detail-modal');const content=document.getElementById('modal-content');content.innerHTML=`<div class="p-6 border-b border-gray-200 dark:border-gray-700"><div class="flex justify-between items-center"><h3 class="text-xl font-bold text-gray-900 dark:text-white">Gastauftrag Details</h3><button onclick="closeDetailModal()"class="text-gray-400 hover:text-gray-600 dark:hover:text-gray-300"><svg class="w-6 h-6"fill="none"stroke="currentColor"viewBox="0 0 24 24"><path stroke-linecap="round"stroke-linejoin="round"stroke-width="2"d="M6 18L18 6M6 6l12 12"/></svg></button></div></div><div class="p-6"><div class="grid grid-cols-1 md:grid-cols-2 gap-6"><div class="space-y-4"><h4 class="text-lg font-semibold text-gray-900 dark:text-white">Antragsteller</h4><div class="bg-slate-50 dark:bg-slate-700 rounded-lg p-4"><p><strong>Name:</strong>${escapeHtml(request.name||'Unbekannt')}</p><p><strong>E-Mail:</strong>${escapeHtml(request.email||'Keine E-Mail')}</p><p><strong>Erstellt am:</strong>${formatDateTime(request.created_at)}</p></div></div><div class="space-y-4"><h4 class="text-lg font-semibold text-gray-900 dark:text-white">Auftrag Details</h4><div class="bg-slate-50 dark:bg-slate-700 rounded-lg p-4"><p><strong>Datei:</strong>${escapeHtml(request.file_name||'Keine Datei')}</p><p><strong>Dauer:</strong>${request.duration_minutes||'Unbekannt'}Minuten</p><p><strong>Kopien:</strong>${request.copies||1}</p><p><strong>Status:</strong>${getStatusText(request.status)}</p></div></div></div>${request.reason?`<div class="mt-6"><h4 class="text-lg font-semibold text-gray-900 dark:text-white mb-2">Begründung</h4><div class="bg-slate-50 dark:bg-slate-700 rounded-lg p-4"><p class="text-gray-700 dark:text-gray-300">${escapeHtml(request.reason)}</p></div></div>`:''}<div class="mt-8 flex justify-end space-x-3">${request.status==='pending'?`<button onclick="approveRequest(${request.id}); closeDetailModal();"
-class="px-4 py-2 bg-green-500 text-white rounded-lg hover:bg-green-600 transition-colors">Genehmigen</button><button onclick="rejectRequest(${request.id}); closeDetailModal();"
-class="px-4 py-2 bg-red-500 text-white rounded-lg hover:bg-red-600 transition-colors">Ablehnen</button>`:''}<button onclick="closeDetailModal()"
-class="px-4 py-2 bg-gray-300 dark:bg-gray-600 text-gray-700 dark:text-gray-300 rounded-lg hover:bg-gray-400 dark:hover:bg-gray-500 transition-colors">Schließen</button></div></div>`;modal.classList.remove('hidden');}
-function closeDetailModal(){const modal=document.getElementById('detail-modal');modal.classList.add('hidden');}
-function showBulkActionsModal(){const selectedIds=getSelectedRequestIds();if(selectedIds.length===0){showNotification('⚠️ Bitte wählen Sie mindestens einen Gastauftrag aus','warning');return;}
-const modal=document.getElementById('bulk-modal');modal.classList.remove('hidden');}
-function closeBulkModal(){const modal=document.getElementById('bulk-modal');modal.classList.add('hidden');}
-async function performBulkAction(action){const selectedIds=getSelectedRequestIds();if(selectedIds.length===0)return;const confirmMessages={'approve':`Möchten Sie ${selectedIds.length}Gastaufträge genehmigen?`,'reject':`Möchten Sie ${selectedIds.length}Gastaufträge ablehnen?`,'delete':`Möchten Sie ${selectedIds.length}Gastaufträge löschen?`};if(!confirm(confirmMessages[action]))return;try{showLoading(true);closeBulkModal();const promises=selectedIds.map(async(id)=>{const url=`${API_BASE_URL}/api/guest-requests/${id}/${action}`;const method=action==='delete'?'DELETE':'POST';return fetch(url,{method,headers:{'Content-Type':'application/json','X-CSRFToken':csrfToken}});});const results=await Promise.allSettled(promises);const successCount=results.filter(r=>r.status==='fulfilled'&&r.value.ok).length;showNotification(`✅ ${successCount}von ${selectedIds.length}Aktionen erfolgreich`,'success');loadGuestRequests();document.getElementById('select-all').checked=false;document.querySelectorAll('.request-checkbox').forEach(cb=>cb.checked=false);}catch(error){console.error('Fehler bei Bulk-Aktion:',error);showNotification('❌ Fehler bei der Bulk-Aktion: '+error.message,'error');}finally{showLoading(false);}}
-function getSelectedRequestIds(){const checkboxes=document.querySelectorAll('.request-checkbox:checked');return Array.from(checkboxes).map(cb=>parseInt(cb.value));}
-function handleSearch(){applyFiltersAndSort();}
-function handleFilterChange(){applyFiltersAndSort();}
-function handleSortChange(){applyFiltersAndSort();}
-function handleSelectAll(event){const checkboxes=document.querySelectorAll('.request-checkbox');checkboxes.forEach(checkbox=>{checkbox.checked=event.target.checked;});}
-function handleExport(){const selectedIds=getSelectedRequestIds();const exportData=selectedIds.length>0?filteredRequests.filter(req=>selectedIds.includes(req.id)):filteredRequests;if(exportData.length===0){showNotification('⚠️ Keine Daten zum Exportieren verfügbar','warning');return;}
-exportToCSV(exportData);}
-function exportToCSV(data){const headers=['ID','Name','E-Mail','Datei','Status','Erstellt','Dauer (Min)','Kopien','Begründung'];const rows=data.map(req=>[req.id,req.name||'',req.email||'',req.file_name||'',getStatusText(req.status),formatDateTime(req.created_at),req.duration_minutes||'',req.copies||'',req.reason||'']);const csvContent=[headers,...rows].map(row=>row.map(field=>`"${String(field).replace(/"/g,'""')}"`).join(','))
+/**
+ * Mercedes-Benz MYP Admin Guest Requests Management
+ * Moderne Verwaltung von Gastaufträgen mit Live-Updates
+ */
+
+// Globale Variablen
+let currentRequests = [];
+let filteredRequests = [];
+let currentPage = 0;
+let totalPages = 0;
+let totalRequests = 0;
+let refreshInterval = null;
+let csrfToken = '';
+
+// API Base URL Detection - Korrigierte Version für CSP-Kompatibilität
+function detectApiBaseUrl() {
+    // Für lokale Entwicklung und CSP-Kompatibilität immer relative URLs verwenden
+    // Das verhindert CSP-Probleme mit connect-src
+    return ''; // Leerer String für relative URLs
+}
+
+const API_BASE_URL = detectApiBaseUrl();
+
+// Initialisierung beim Laden der Seite
+document.addEventListener('DOMContentLoaded', function() {
+    // CSRF Token abrufen
+    csrfToken = document.querySelector('meta[name="csrf-token"]')?.getAttribute('content') || '';
+    
+    // Event Listeners initialisieren
+    initEventListeners();
+    
+    // Daten initial laden
+    loadGuestRequests();
+    
+    // Auto-Refresh starten
+    startAutoRefresh();
+    
+    console.log('🎯 Admin Guest Requests Management geladen');
+});
+
+/**
+ * Event Listeners initialisieren
+ */
+function initEventListeners() {
+    // Search Input
+    const searchInput = document.getElementById('search-requests');
+    if (searchInput) {
+        searchInput.addEventListener('input', debounce(handleSearch, 300));
+    }
+    
+    // Status Filter
+    const statusFilter = document.getElementById('status-filter');
+    if (statusFilter) {
+        statusFilter.addEventListener('change', handleFilterChange);
+    }
+    
+    // Sort Order
+    const sortOrder = document.getElementById('sort-order');
+    if (sortOrder) {
+        sortOrder.addEventListener('change', handleSortChange);
+    }
+    
+    // Action Buttons
+    const refreshBtn = document.getElementById('refresh-btn');
+    if (refreshBtn) {
+        refreshBtn.addEventListener('click', () => {
+            loadGuestRequests();
+            showNotification('🔄 Gastaufträge aktualisiert', 'info');
+        });
+    }
+    
+    const exportBtn = document.getElementById('export-btn');
+    if (exportBtn) {
+        exportBtn.addEventListener('click', handleExport);
+    }
+    
+    const bulkActionsBtn = document.getElementById('bulk-actions-btn');
+    if (bulkActionsBtn) {
+        bulkActionsBtn.addEventListener('click', showBulkActionsModal);
+    }
+    
+    // Select All Checkbox
+    const selectAllCheckbox = document.getElementById('select-all');
+    if (selectAllCheckbox) {
+        selectAllCheckbox.addEventListener('change', handleSelectAll);
+    }
+}
+
+/**
+ * Gastaufträge von der API laden
+ */
+async function loadGuestRequests() {
+    try {
+        showLoading(true);
+        
+        const url = `${API_BASE_URL}/api/admin/requests`;
+        const response = await fetch(url, {
+            method: 'GET',
+            headers: {
+                'Content-Type': 'application/json',
+                'X-CSRFToken': csrfToken
+            }
+        });
+        
+        if (!response.ok) {
+            throw new Error(`HTTP ${response.status}: ${response.statusText}`);
+        }
+        
+        const data = await response.json();
+        
+        if (data.success) {
+            currentRequests = data.requests || [];
+            totalRequests = data.total || 0;
+            
+            // Statistiken aktualisieren
+            updateStats(data.stats || {});
+            
+            // Tabelle aktualisieren
+            applyFiltersAndSort();
+            
+            console.log(`✅ ${currentRequests.length} Gastaufträge geladen`);
+        } else {
+            throw new Error(data.message || 'Fehler beim Laden der Gastaufträge');
+        }
+    } catch (error) {
+        console.error('Fehler beim Laden der Gastaufträge:', error);
+        showNotification('❌ Fehler beim Laden der Gastaufträge: ' + error.message, 'error');
+        showEmptyState();
+    } finally {
+        showLoading(false);
+    }
+}
+
+/**
+ * Statistiken aktualisieren
+ */
+function updateStats(stats) {
+    const elements = {
+        'pending-count': stats.pending || 0,
+        'approved-count': stats.approved || 0,
+        'rejected-count': stats.rejected || 0,
+        'total-count': stats.total || 0
+    };
+    
+    Object.entries(elements).forEach(([id, value]) => {
+        const element = document.getElementById(id);
+        if (element) {
+            animateCounter(element, value);
+        }
+    });
+}
+
+/**
+ * Counter mit Animation
+ */
+function animateCounter(element, targetValue) {
+    const currentValue = parseInt(element.textContent) || 0;
+    const difference = targetValue - currentValue;
+    const steps = 20;
+    const stepValue = difference / steps;
+    
+    let step = 0;
+    const interval = setInterval(() => {
+        step++;
+        const value = Math.round(currentValue + (stepValue * step));
+        element.textContent = value;
+        
+        if (step >= steps) {
+            clearInterval(interval);
+            element.textContent = targetValue;
+        }
+    }, 50);
+}
+
+/**
+ * Filter und Sortierung anwenden
+ */
+function applyFiltersAndSort() {
+    let requests = [...currentRequests];
+    
+    // Status Filter
+    const statusFilter = document.getElementById('status-filter')?.value;
+    if (statusFilter && statusFilter !== 'all') {
+        requests = requests.filter(req => req.status === statusFilter);
+    }
+    
+    // Such-Filter
+    const searchTerm = document.getElementById('search-requests')?.value.toLowerCase();
+    if (searchTerm) {
+        requests = requests.filter(req => 
+            req.name?.toLowerCase().includes(searchTerm) ||
+            req.email?.toLowerCase().includes(searchTerm) ||
+            req.file_name?.toLowerCase().includes(searchTerm) ||
+            req.reason?.toLowerCase().includes(searchTerm)
+        );
+    }
+    
+    // Sortierung
+    const sortOrder = document.getElementById('sort-order')?.value;
+    requests.sort((a, b) => {
+        switch (sortOrder) {
+            case 'oldest':
+                return new Date(a.created_at) - new Date(b.created_at);
+            case 'priority':
+                return getPriorityValue(b) - getPriorityValue(a);
+            case 'newest':
+            default:
+                return new Date(b.created_at) - new Date(a.created_at);
+        }
+    });
+    
+    filteredRequests = requests;
+    renderRequestsTable();
+}
+
+/**
+ * Prioritätswert für Sortierung berechnen
+ */
+function getPriorityValue(request) {
+    const now = new Date();
+    const created = new Date(request.created_at);
+    const hoursOld = (now - created) / (1000 * 60 * 60);
+    
+    let priority = 0;
+    
+    // Status-basierte Priorität
+    if (request.status === 'pending') priority += 10;
+    else if (request.status === 'approved') priority += 5;
+    
+    // Alter-basierte Priorität
+    if (hoursOld > 24) priority += 5;
+    else if (hoursOld > 8) priority += 3;
+    else if (hoursOld > 2) priority += 1;
+    
+    return priority;
+}
+
+/**
+ * Requests-Tabelle rendern
+ */
+function renderRequestsTable() {
+    const tableBody = document.getElementById('requests-table-body');
+    const emptyState = document.getElementById('empty-state');
+    
+    if (!tableBody) return;
+    
+    if (filteredRequests.length === 0) {
+        tableBody.innerHTML = '';
+        showEmptyState();
+        return;
+    }
+    
+    hideEmptyState();
+    
+    const requestsHtml = filteredRequests.map(request => createRequestRow(request)).join('');
+    tableBody.innerHTML = requestsHtml;
+    
+    // Event Listeners für neue Rows hinzufügen
+    addRowEventListeners();
+}
+
+/**
+ * Request Row HTML erstellen
+ */
+function createRequestRow(request) {
+    const statusColor = getStatusColor(request.status);
+    const priorityLevel = getPriorityLevel(request);
+    const timeAgo = getTimeAgo(request.created_at);
+    
+    return `
+        <tr class="hover:bg-slate-50 dark:hover:bg-slate-700/50 transition-colors duration-200" data-request-id="${request.id}">
+            <td class="px-6 py-4">
+                <input type="checkbox" class="request-checkbox rounded border-slate-300 text-blue-600 focus:ring-blue-500" 
+                       value="${request.id}">
+            </td>
+            <td class="px-6 py-4">
+                <div class="flex items-center">
+                    <div class="flex-shrink-0 h-10 w-10">
+                        <div class="h-10 w-10 rounded-full bg-gradient-to-br from-blue-500 to-purple-600 flex items-center justify-center text-white font-semibold">
+                            ${request.name ? request.name[0].toUpperCase() : 'G'}
+                        </div>
+                    </div>
+                    <div class="ml-4">
+                        <div class="text-sm font-medium text-slate-900 dark:text-white">${escapeHtml(request.name || 'Unbekannt')}</div>
+                        <div class="text-sm text-slate-500 dark:text-slate-400">${escapeHtml(request.email || 'Keine E-Mail')}</div>
+                    </div>
+                </div>
+            </td>
+            <td class="px-6 py-4">
+                <div class="text-sm text-slate-900 dark:text-white font-medium">${escapeHtml(request.file_name || 'Keine Datei')}</div>
+                <div class="text-sm text-slate-500 dark:text-slate-400">
+                    ${request.duration_minutes ? `${request.duration_minutes} Min.` : 'Unbekannte Dauer'}
+                    ${request.copies ? ` • ${request.copies} Kopien` : ''}
+                </div>
+                ${request.reason ? `<div class="text-xs text-slate-400 dark:text-slate-500 mt-1 truncate max-w-xs">${escapeHtml(request.reason)}</div>` : ''}
+            </td>
+            <td class="px-6 py-4">
+                <span class="inline-flex items-center px-2 py-1 text-xs font-semibold rounded-full ${statusColor}">
+                    <span class="w-2 h-2 mr-1 rounded-full ${getStatusDot(request.status)}"></span>
+                    ${getStatusText(request.status)}
+                </span>
+            </td>
+            <td class="px-6 py-4">
+                <div class="text-sm text-slate-900 dark:text-white">${timeAgo}</div>
+                <div class="text-xs text-slate-500 dark:text-slate-400">${formatDateTime(request.created_at)}</div>
+            </td>
+            <td class="px-6 py-4">
+                <div class="flex items-center">
+                    ${getPriorityBadge(priorityLevel)}
+                    ${request.is_urgent ? '<span class="ml-2 text-red-500 text-xs">🔥 Dringend</span>' : ''}
+                </div>
+            </td>
+            <td class="px-6 py-4">
+                <div class="flex items-center space-x-2">
+                    <button onclick="showRequestDetail(${request.id})" 
+                            class="text-blue-600 hover:text-blue-900 dark:text-blue-400 dark:hover:text-blue-300 transition-colors"
+                            title="Details anzeigen">
+                        <svg class="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                            <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M15 12a3 3 0 11-6 0 3 3 0 016 0z"/>
+                            <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M2.458 12C3.732 7.943 7.523 5 12 5c4.478 0 8.268 2.943 9.542 7-1.274 4.057-5.064 7-9.542 7-4.477 0-8.268-2.943-9.542-7z"/>
+                        </svg>
+                    </button>
+                    
+                    ${request.status === 'pending' ? `
+                        <button onclick="approveRequest(${request.id})" 
+                                class="text-green-600 hover:text-green-900 dark:text-green-400 dark:hover:text-green-300 transition-colors"
+                                title="Genehmigen">
+                            <svg class="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                                <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M9 12l2 2 4-4m6 2a9 9 0 11-18 0 9 9 0 0118 0z"/>
+                            </svg>
+                        </button>
+                        
+                        <button onclick="rejectRequest(${request.id})" 
+                                class="text-red-600 hover:text-red-900 dark:text-red-400 dark:hover:text-red-300 transition-colors"
+                                title="Ablehnen">
+                            <svg class="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                                <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M10 14l2-2m0 0l2-2m-2 2l-2-2m2 2l2 2m7-2a9 9 0 11-18 0 9 9 0 0118 0z"/>
+                            </svg>
+                        </button>
+                    ` : ''}
+                    
+                    <button onclick="deleteRequest(${request.id})" 
+                            class="text-gray-600 hover:text-gray-900 dark:text-gray-400 dark:hover:text-gray-300 transition-colors"
+                            title="Löschen">
+                        <svg class="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                            <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M19 7l-.867 12.142A2 2 0 0116.138 21H7.862a2 2 0 01-1.995-1.858L5 7m5 4v6m4-6v6m1-10V4a1 1 0 00-1-1h-4a1 1 0 00-1 1v3M4 7h16"/>
+                        </svg>
+                    </button>
+                </div>
+            </td>
+        </tr>
+    `;
+}
+
+/**
+ * Status-Helper-Funktionen
+ */
+function getStatusColor(status) {
+    const colors = {
+        'pending': 'bg-yellow-100 text-yellow-800 dark:bg-yellow-900/30 dark:text-yellow-300',
+        'approved': 'bg-green-100 text-green-800 dark:bg-green-900/30 dark:text-green-300',
+        'rejected': 'bg-red-100 text-red-800 dark:bg-red-900/30 dark:text-red-300',
+        'expired': 'bg-gray-100 text-gray-800 dark:bg-gray-900/30 dark:text-gray-300'
+    };
+    return colors[status] || 'bg-gray-100 text-gray-800 dark:bg-gray-900/30 dark:text-gray-300';
+}
+
+function getStatusDot(status) {
+    const dots = {
+        'pending': 'bg-yellow-400 dark:bg-yellow-300',
+        'approved': 'bg-green-400 dark:bg-green-300',
+        'rejected': 'bg-red-400 dark:bg-red-300',
+        'expired': 'bg-gray-400 dark:bg-gray-300'
+    };
+    return dots[status] || 'bg-gray-400 dark:bg-gray-300';
+}
+
+function getStatusText(status) {
+    const texts = {
+        'pending': 'Wartend',
+        'approved': 'Genehmigt',
+        'rejected': 'Abgelehnt',
+        'expired': 'Abgelaufen'
+    };
+    return texts[status] || status;
+}
+
+function getPriorityLevel(request) {
+    const priority = getPriorityValue(request);
+    if (priority >= 15) return 'high';
+    if (priority >= 8) return 'medium';
+    return 'low';
+}
+
+function getPriorityBadge(level) {
+    const badges = {
+        'high': '<span class="inline-flex items-center px-2 py-1 text-xs font-medium rounded-full bg-red-100 text-red-800 dark:bg-red-900/30 dark:text-red-300">🔴 Hoch</span>',
+        'medium': '<span class="inline-flex items-center px-2 py-1 text-xs font-medium rounded-full bg-orange-100 text-orange-800 dark:bg-orange-900/30 dark:text-orange-300">🟡 Mittel</span>',
+        'low': '<span class="inline-flex items-center px-2 py-1 text-xs font-medium rounded-full bg-green-100 text-green-800 dark:bg-green-900/30 dark:text-green-300">🟢 Niedrig</span>'
+    };
+    return badges[level] || badges['low'];
+}
+
+/**
+ * CRUD-Operationen
+ */
+async function approveRequest(requestId) {
+    if (!confirm('Möchten Sie diesen Gastauftrag wirklich genehmigen?')) return;
+    
+    try {
+        showLoading(true);
+        
+        const url = `${API_BASE_URL}/api/guest-requests/${requestId}/approve`;
+        const response = await fetch(url, {
+            method: 'POST',
+            headers: {
+                'Content-Type': 'application/json',
+                'X-CSRFToken': csrfToken
+            },
+            body: JSON.stringify({})  // Leeres JSON-Objekt senden
+        });
+        
+        const data = await response.json();
+        
+        if (data.success) {
+            showNotification('✅ Gastauftrag erfolgreich genehmigt', 'success');
+            loadGuestRequests();
+        } else {
+            throw new Error(data.message || 'Fehler beim Genehmigen');
+        }
+    } catch (error) {
+        console.error('Fehler beim Genehmigen:', error);
+        showNotification('❌ Fehler beim Genehmigen: ' + error.message, 'error');
+    } finally {
+        showLoading(false);
+    }
+}
+
+async function rejectRequest(requestId) {
+    const reason = prompt('Grund für die Ablehnung:');
+    if (!reason) return;
+    
+    try {
+        showLoading(true);
+        
+        const url = `${API_BASE_URL}/api/guest-requests/${requestId}/reject`;
+        const response = await fetch(url, {
+            method: 'POST',
+            headers: {
+                'Content-Type': 'application/json',
+                'X-CSRFToken': csrfToken
+            },
+            body: JSON.stringify({ reason })
+        });
+        
+        const data = await response.json();
+        
+        if (data.success) {
+            showNotification('✅ Gastauftrag erfolgreich abgelehnt', 'success');
+            loadGuestRequests();
+        } else {
+            throw new Error(data.message || 'Fehler beim Ablehnen');
+        }
+    } catch (error) {
+        console.error('Fehler beim Ablehnen:', error);
+        showNotification('❌ Fehler beim Ablehnen: ' + error.message, 'error');
+    } finally {
+        showLoading(false);
+    }
+}
+
+async function deleteRequest(requestId) {
+    if (!confirm('Möchten Sie diesen Gastauftrag wirklich löschen? Diese Aktion kann nicht rückgängig gemacht werden.')) return;
+    
+    try {
+        showLoading(true);
+        
+        const url = `${API_BASE_URL}/api/guest-requests/${requestId}`;
+        const response = await fetch(url, {
+            method: 'DELETE',
+            headers: {
+                'Content-Type': 'application/json',
+                'X-CSRFToken': csrfToken
+            }
+        });
+        
+        const data = await response.json();
+        
+        if (data.success) {
+            showNotification('✅ Gastauftrag erfolgreich gelöscht', 'success');
+            loadGuestRequests();
+        } else {
+            throw new Error(data.message || 'Fehler beim Löschen');
+        }
+    } catch (error) {
+        console.error('Fehler beim Löschen:', error);
+        showNotification('❌ Fehler beim Löschen: ' + error.message, 'error');
+    } finally {
+        showLoading(false);
+    }
+}
+
+/**
+ * Detail-Modal Funktionen
+ */
+function showRequestDetail(requestId) {
+    const request = currentRequests.find(req => req.id === requestId);
+    if (!request) return;
+    
+    const modal = document.getElementById('detail-modal');
+    const content = document.getElementById('modal-content');
+    
+    content.innerHTML = `
+        <div class="p-6 border-b border-gray-200 dark:border-gray-700">
+            <div class="flex justify-between items-center">
+                <h3 class="text-xl font-bold text-gray-900 dark:text-white">Gastauftrag Details</h3>
+                <button onclick="closeDetailModal()" class="text-gray-400 hover:text-gray-600 dark:hover:text-gray-300">
+                    <svg class="w-6 h-6" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                        <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M6 18L18 6M6 6l12 12"/>
+                    </svg>
+                </button>
+            </div>
+        </div>
+        <div class="p-6">
+            <div class="grid grid-cols-1 md:grid-cols-2 gap-6">
+                <div class="space-y-4">
+                    <h4 class="text-lg font-semibold text-gray-900 dark:text-white">Antragsteller</h4>
+                    <div class="bg-slate-50 dark:bg-slate-700 rounded-lg p-4">
+                        <p><strong>Name:</strong> ${escapeHtml(request.name || 'Unbekannt')}</p>
+                        <p><strong>E-Mail:</strong> ${escapeHtml(request.email || 'Keine E-Mail')}</p>
+                        <p><strong>Erstellt am:</strong> ${formatDateTime(request.created_at)}</p>
+                    </div>
+                </div>
+                
+                <div class="space-y-4">
+                    <h4 class="text-lg font-semibold text-gray-900 dark:text-white">Auftrag Details</h4>
+                    <div class="bg-slate-50 dark:bg-slate-700 rounded-lg p-4">
+                        <p><strong>Datei:</strong> ${escapeHtml(request.file_name || 'Keine Datei')}</p>
+                        <p><strong>Dauer:</strong> ${request.duration_minutes || 'Unbekannt'} Minuten</p>
+                        <p><strong>Kopien:</strong> ${request.copies || 1}</p>
+                        <p><strong>Status:</strong> ${getStatusText(request.status)}</p>
+                    </div>
+                </div>
+            </div>
+            
+            ${request.reason ? `
+                <div class="mt-6">
+                    <h4 class="text-lg font-semibold text-gray-900 dark:text-white mb-2">Begründung</h4>
+                    <div class="bg-slate-50 dark:bg-slate-700 rounded-lg p-4">
+                        <p class="text-gray-700 dark:text-gray-300">${escapeHtml(request.reason)}</p>
+                    </div>
+                </div>
+            ` : ''}
+            
+            <div class="mt-8 flex justify-end space-x-3">
+                ${request.status === 'pending' ? `
+                    <button onclick="approveRequest(${request.id}); closeDetailModal();" 
+                            class="px-4 py-2 bg-green-500 text-white rounded-lg hover:bg-green-600 transition-colors">
+                        Genehmigen
+                    </button>
+                    <button onclick="rejectRequest(${request.id}); closeDetailModal();" 
+                            class="px-4 py-2 bg-red-500 text-white rounded-lg hover:bg-red-600 transition-colors">
+                        Ablehnen
+                    </button>
+                ` : ''}
+                <button onclick="closeDetailModal()" 
+                        class="px-4 py-2 bg-gray-300 dark:bg-gray-600 text-gray-700 dark:text-gray-300 rounded-lg hover:bg-gray-400 dark:hover:bg-gray-500 transition-colors">
+                    Schließen
+                </button>
+            </div>
+        </div>
+    `;
+    
+    modal.classList.remove('hidden');
+}
+
+function closeDetailModal() {
+    const modal = document.getElementById('detail-modal');
+    modal.classList.add('hidden');
+}
+
+/**
+ * Bulk Actions
+ */
+function showBulkActionsModal() {
+    const selectedIds = getSelectedRequestIds();
+    if (selectedIds.length === 0) {
+        showNotification('⚠️ Bitte wählen Sie mindestens einen Gastauftrag aus', 'warning');
+        return;
+    }
+    
+    const modal = document.getElementById('bulk-modal');
+    modal.classList.remove('hidden');
+}
+
+function closeBulkModal() {
+    const modal = document.getElementById('bulk-modal');
+    modal.classList.add('hidden');
+}
+
+async function performBulkAction(action) {
+    const selectedIds = getSelectedRequestIds();
+    if (selectedIds.length === 0) return;
+    
+    const confirmMessages = {
+        'approve': `Möchten Sie ${selectedIds.length} Gastaufträge genehmigen?`,
+        'reject': `Möchten Sie ${selectedIds.length} Gastaufträge ablehnen?`,
+        'delete': `Möchten Sie ${selectedIds.length} Gastaufträge löschen?`
+    };
+    
+    if (!confirm(confirmMessages[action])) return;
+    
+    try {
+        showLoading(true);
+        closeBulkModal();
+        
+        const promises = selectedIds.map(async (id) => {
+            const url = `${API_BASE_URL}/api/guest-requests/${id}/${action}`;
+            const method = action === 'delete' ? 'DELETE' : 'POST';
+            
+            return fetch(url, {
+                method,
+                headers: {
+                    'Content-Type': 'application/json',
+                    'X-CSRFToken': csrfToken
+                }
+            });
+        });
+        
+        const results = await Promise.allSettled(promises);
+        const successCount = results.filter(r => r.status === 'fulfilled' && r.value.ok).length;
+        
+        showNotification(`✅ ${successCount} von ${selectedIds.length} Aktionen erfolgreich`, 'success');
+        loadGuestRequests();
+        
+        // Alle Checkboxen zurücksetzen
+        document.getElementById('select-all').checked = false;
+        document.querySelectorAll('.request-checkbox').forEach(cb => cb.checked = false);
+        
+    } catch (error) {
+        console.error('Fehler bei Bulk-Aktion:', error);
+        showNotification('❌ Fehler bei der Bulk-Aktion: ' + error.message, 'error');
+    } finally {
+        showLoading(false);
+    }
+}
+
+function getSelectedRequestIds() {
+    const checkboxes = document.querySelectorAll('.request-checkbox:checked');
+    return Array.from(checkboxes).map(cb => parseInt(cb.value));
+}
+
+/**
+ * Event Handlers
+ */
+function handleSearch() {
+    applyFiltersAndSort();
+}
+
+function handleFilterChange() {
+    applyFiltersAndSort();
+}
+
+function handleSortChange() {
+    applyFiltersAndSort();
+}
+
+function handleSelectAll(event) {
+    const checkboxes = document.querySelectorAll('.request-checkbox');
+    checkboxes.forEach(checkbox => {
+        checkbox.checked = event.target.checked;
+    });
+}
+
+function handleExport() {
+    const selectedIds = getSelectedRequestIds();
+    const exportData = selectedIds.length > 0 ? 
+        filteredRequests.filter(req => selectedIds.includes(req.id)) : 
+        filteredRequests;
+    
+    if (exportData.length === 0) {
+        showNotification('⚠️ Keine Daten zum Exportieren verfügbar', 'warning');
+        return;
+    }
+    
+    exportToCSV(exportData);
+}
+
+/**
+ * Export-Funktionen
+ */
+function exportToCSV(data) {
+    const headers = ['ID', 'Name', 'E-Mail', 'Datei', 'Status', 'Erstellt', 'Dauer (Min)', 'Kopien', 'Begründung'];
+    const rows = data.map(req => [
+        req.id,
+        req.name || '',
+        req.email || '',
+        req.file_name || '',
+        getStatusText(req.status),
+        formatDateTime(req.created_at),
+        req.duration_minutes || '',
+        req.copies || '',
+        req.reason || ''
+    ]);
+    
+    const csvContent = [headers, ...rows]
+        .map(row => row.map(field => `"${String(field).replace(/"/g, '""')}"`).join(','))
         .join('\n');
     
     const blob = new Blob([csvContent], { type: 'text/csv;charset=utf-8;' });
@@ -220,4 +872,4 @@ window.closeDetailModal = closeDetailModal;
 window.closeBulkModal = closeBulkModal;
 window.performBulkAction = performBulkAction;
 
-console.log('📋 Admin Guest Requests JavaScript vollständig geladen'
\ No newline at end of file
+console.log('📋 Admin Guest Requests JavaScript vollständig geladen'); 
\ No newline at end of file
diff --git a/backend/static/js/printer_monitor.js.backup b/backend/static/js/printer_monitor.js.backup
new file mode 100644
index 000000000..992153710
--- /dev/null
+++ b/backend/static/js/printer_monitor.js.backup
@@ -0,0 +1,497 @@
+/**
+ * Live-Drucker-Monitor für MYP Platform
+ * Verwaltet Live-Status-Updates mit Session-Caching und automatischer Aktualisierung
+ */
+
+class PrinterMonitor {
+    constructor() {
+        this.refreshInterval = 30000; // 30 Sekunden Standard-Intervall
+        this.fastRefreshInterval = 5000; // 5 Sekunden für schnelle Updates
+        this.currentInterval = null;
+        this.printers = new Map();
+        this.callbacks = new Set();
+        this.isActive = false;
+        this.useCache = true;
+        this.lastUpdate = null;
+        this.errorCount = 0;
+        this.maxErrors = 3;
+        
+        // Status-Kategorien für bessere Übersicht
+        this.statusCategories = {
+            'online': { label: 'Online', color: 'success', icon: '🟢' },
+            'offline': { label: 'Offline', color: 'danger', icon: '🔴' },
+            'standby': { label: 'Standby', color: 'warning', icon: '🟡' },
+            'unreachable': { label: 'Nicht erreichbar', color: 'secondary', icon: '⚫' },
+            'unconfigured': { label: 'Nicht konfiguriert', color: 'info', icon: '🔵' }
+        };
+        
+        console.log('🖨️ PrinterMonitor initialisiert');
+    }
+    
+    /**
+     * Startet das Live-Monitoring
+     */
+    start() {
+        if (this.isActive) {
+            console.log('⚠️ PrinterMonitor läuft bereits');
+            return;
+        }
+        
+        this.isActive = true;
+        this.errorCount = 0;
+        
+        console.log('🚀 Starte PrinterMonitor');
+        
+        // Sofortige erste Aktualisierung
+        this.updatePrinterStatus();
+        
+        // Reguläres Intervall starten
+        this.startInterval();
+        
+        // Event-Listener für Sichtbarkeitsänderungen
+        document.addEventListener('visibilitychange', this.handleVisibilityChange.bind(this));
+    }
+    
+    /**
+     * Stoppt das Live-Monitoring
+     */
+    stop() {
+        if (!this.isActive) {
+            return;
+        }
+        
+        this.isActive = false;
+        
+        if (this.currentInterval) {
+            clearInterval(this.currentInterval);
+            this.currentInterval = null;
+        }
+        
+        document.removeEventListener('visibilitychange', this.handleVisibilityChange.bind(this));
+        
+        console.log('⏹️ PrinterMonitor gestoppt');
+    }
+    
+    /**
+     * Startet das Update-Intervall
+     */
+    startInterval() {
+        if (this.currentInterval) {
+            clearInterval(this.currentInterval);
+        }
+        
+        this.currentInterval = setInterval(() => {
+            this.updatePrinterStatus();
+        }, this.refreshInterval);
+    }
+    
+    /**
+     * Behandelt Sichtbarkeitsänderungen der Seite
+     */
+    handleVisibilityChange() {
+        if (document.hidden) {
+            // Seite nicht sichtbar - langsamere Updates
+            this.refreshInterval = 60000; // 1 Minute
+        } else {
+            // Seite sichtbar - normale Updates
+            this.refreshInterval = 30000; // 30 Sekunden
+            // Sofortige Aktualisierung wenn Seite wieder sichtbar
+            this.updatePrinterStatus();
+        }
+        
+        if (this.isActive) {
+            this.startInterval();
+        }
+    }
+    
+    /**
+     * Holt aktuelle Drucker-Status-Daten
+     */
+    async updatePrinterStatus() {
+        if (!this.isActive) {
+            return;
+        }
+        
+        try {
+            const response = await fetch(`/api/printers/status`, {
+                method: 'GET',
+                headers: {
+                    'Content-Type': 'application/json',
+                    'X-Requested-With': 'XMLHttpRequest'
+                }
+            });
+            
+            if (!response.ok) {
+                throw new Error(`HTTP ${response.status}: ${response.statusText}`);
+            }
+            
+            const data = await response.json();
+            
+            if (data.success) {
+                this.processPrinterData(data);
+                this.errorCount = 0; // Reset error count on success
+            } else {
+                throw new Error(data.error || 'Unbekannter Fehler');
+            }
+            
+        } catch (error) {
+            this.errorCount++;
+            console.error('❌ Fehler beim Abrufen des Drucker-Status:', error);
+            
+            // Bei wiederholten Fehlern weniger frequent versuchen
+            if (this.errorCount >= this.maxErrors) {
+                this.refreshInterval = Math.min(this.refreshInterval * 2, 300000); // Max 5 Minuten
+                this.startInterval();
+                
+                this.notifyCallbacks({
+                    type: 'error',
+                    message: `Drucker-Status nicht verfügbar (${this.errorCount} Fehler)`,
+                    timestamp: new Date().toISOString()
+                });
+            }
+        }
+    }
+    
+    /**
+     * Verarbeitet empfangene Drucker-Daten
+     */
+    processPrinterData(data) {
+        const previousPrinters = new Map(this.printers);
+        
+        // Drucker-Daten aktualisieren
+        this.printers.clear();
+        
+        // Flexible Datenextraktion für verschiedene API-Response-Strukturen
+        let printersData = null;
+        
+        if (data && data.printers && Array.isArray(data.printers)) {
+            // Neue Struktur: data.printers als Array
+            printersData = data.printers;
+        } else if (data && data.printers && typeof data.printers === 'object') {
+            // Alte Struktur: data.printers als Objekt
+            printersData = Object.values(data.printers);
+        } else if (data && data.status && typeof data.status === 'object') {
+            // Alternative Struktur: data.status
+            printersData = Object.values(data.status);
+        } else if (data && typeof data === 'object' && !data.success && !data.error) {
+            // Direkte Drucker-Daten ohne Wrapper
+            printersData = Object.values(data);
+        }
+        
+        if (printersData && Array.isArray(printersData)) {
+            // Drucker-Daten verarbeiten (jetzt als Array)
+            printersData.forEach(printer => {
+                // Sichere Validierung der Drucker-Objekte
+                if (printer && typeof printer === 'object' && printer.id) {
+                    this.printers.set(printer.id, {
+                        ...printer,
+                        statusInfo: this.statusCategories[printer.status] || this.statusCategories['offline']
+                    });
+                } else {
+                    console.warn('⚠️ Ungültiges Drucker-Objekt übersprungen:', printer);
+                }
+            });
+            
+            console.log(`✅ ${this.printers.size} Drucker erfolgreich verarbeitet`);
+        } else {
+            console.warn('⚠️ Keine gültigen Drucker-Daten in Response-Struktur gefunden');
+            console.debug('Response-Struktur:', data);
+            
+            // Benachrichtige Callbacks über fehlende Daten (aber nicht als Fehler)
+            this.notifyCallbacks({
+                type: 'warning',
+                message: 'Keine Drucker-Daten verfügbar',
+                data: data
+            });
+            return;
+        }
+        
+        this.lastUpdate = new Date(data.timestamp || Date.now());
+        
+        // Änderungen erkennen und benachrichtigen
+        const changes = this.detectChanges(previousPrinters, this.printers);
+        
+        // Callbacks benachrichtigen
+        this.notifyCallbacks({
+            type: 'update',
+            printers: this.printers,
+            summary: data.summary,
+            changes: changes,
+            timestamp: this.lastUpdate,
+            cacheUsed: data.cache_used
+        });
+        
+        console.log(`🔄 Drucker-Status aktualisiert: ${this.printers.size} Drucker`);
+    }
+    
+    /**
+     * Erkennt Änderungen zwischen zwei Drucker-Status-Maps
+     */
+    detectChanges(oldPrinters, newPrinters) {
+        const changes = [];
+        
+        newPrinters.forEach((newPrinter, id) => {
+            const oldPrinter = oldPrinters.get(id);
+            
+            if (!oldPrinter) {
+                changes.push({
+                    type: 'added',
+                    printer: newPrinter
+                });
+            } else if (oldPrinter.status !== newPrinter.status) {
+                changes.push({
+                    type: 'status_change',
+                    printer: newPrinter,
+                    oldStatus: oldPrinter.status,
+                    newStatus: newPrinter.status
+                });
+            }
+        });
+        
+        oldPrinters.forEach((oldPrinter, id) => {
+            if (!newPrinters.has(id)) {
+                changes.push({
+                    type: 'removed',
+                    printer: oldPrinter
+                });
+            }
+        });
+        
+        return changes;
+    }
+    
+    /**
+     * Benachrichtigt alle registrierten Callbacks
+     */
+    notifyCallbacks(data) {
+        this.callbacks.forEach(callback => {
+            try {
+                callback(data);
+            } catch (error) {
+                console.error('❌ Fehler in PrinterMonitor Callback:', error);
+            }
+        });
+    }
+    
+    /**
+     * Registriert einen Callback für Status-Updates
+     */
+    onUpdate(callback) {
+        if (typeof callback === 'function') {
+            this.callbacks.add(callback);
+        }
+    }
+    
+    /**
+     * Entfernt einen Callback
+     */
+    offUpdate(callback) {
+        this.callbacks.delete(callback);
+    }
+    
+    /**
+     * Erzwingt eine sofortige Aktualisierung ohne Cache
+     */
+    async forceUpdate() {
+        const oldUseCache = this.useCache;
+        this.useCache = false;
+        
+        try {
+            await this.updatePrinterStatus();
+        } finally {
+            this.useCache = oldUseCache;
+        }
+    }
+    
+    /**
+     * Löscht den Cache und erzwingt eine Aktualisierung
+     */
+    async clearCache() {
+        try {
+            const response = await fetch('/api/printers/monitor/clear-cache', {
+                method: 'POST',
+                headers: {
+                    'Content-Type': 'application/json',
+                    'X-Requested-With': 'XMLHttpRequest'
+                }
+            });
+            
+            if (response.ok) {
+                console.log('🧹 Drucker-Cache geleert');
+                await this.forceUpdate();
+            } else {
+                throw new Error(`HTTP ${response.status}`);
+            }
+            
+        } catch (error) {
+            console.error('❌ Fehler beim Leeren des Caches:', error);
+        }
+    }
+    
+    /**
+     * Holt eine schnelle Status-Zusammenfassung
+     */
+    async getSummary() {
+        try {
+            const response = await fetch('/api/printers/monitor/summary', {
+                method: 'GET',
+                headers: {
+                    'Content-Type': 'application/json',
+                    'X-Requested-With': 'XMLHttpRequest'
+                }
+            });
+            
+            if (response.ok) {
+                const data = await response.json();
+                return data.success ? data.summary : null;
+            }
+            
+        } catch (error) {
+            console.error('❌ Fehler beim Abrufen der Zusammenfassung:', error);
+        }
+        
+        return null;
+    }
+    
+    /**
+     * Gibt den aktuellen Status eines Druckers zurück
+     */
+    getPrinter(id) {
+        return this.printers.get(id);
+    }
+    
+    /**
+     * Gibt alle Drucker zurück
+     */
+    getAllPrinters() {
+        return Array.from(this.printers.values());
+    }
+    
+    /**
+     * Gibt Drucker nach Status gefiltert zurück
+     */
+    getPrintersByStatus(status) {
+        return this.getAllPrinters().filter(printer => printer.status === status);
+    }
+    
+    /**
+     * Gibt eine Status-Zusammenfassung zurück
+     */
+    getStatusSummary() {
+        const summary = {
+            total: this.printers.size,
+            online: 0,
+            offline: 0,
+            printing: 0,     // Neuer Status: Drucker druckt gerade
+            standby: 0,
+            unreachable: 0,
+            unconfigured: 0,
+            error: 0         // Status für unbekannte Fehler
+        };
+        
+        this.printers.forEach(printer => {
+            const status = printer.status;
+            if (summary.hasOwnProperty(status)) {
+                summary[status]++;
+            } else {
+                // Fallback für unbekannte Status
+                summary.offline++;
+            }
+        });
+        
+        return summary;
+    }
+    
+    /**
+     * Aktiviert schnelle Updates (für kritische Operationen)
+     */
+    enableFastUpdates() {
+        this.refreshInterval = this.fastRefreshInterval;
+        if (this.isActive) {
+            this.startInterval();
+        }
+        console.log('⚡ Schnelle Updates aktiviert');
+    }
+    
+    /**
+     * Deaktiviert schnelle Updates
+     */
+    disableFastUpdates() {
+        this.refreshInterval = 30000; // Zurück zu normal
+        if (this.isActive) {
+            this.startInterval();
+        }
+        console.log('🐌 Normale Updates aktiviert');
+    }
+    
+    /**
+     * Initialisiert alle Steckdosen (nur für Admins)
+     */
+    async initializeAllOutlets() {
+        try {
+            const response = await fetch('/api/printers/monitor/initialize-outlets', {
+                method: 'POST',
+                headers: {
+                    'Content-Type': 'application/json',
+                    'X-Requested-With': 'XMLHttpRequest'
+                }
+            });
+            
+            if (response.ok) {
+                const data = await response.json();
+                
+                if (data.success) {
+                    console.log('🔌 Steckdosen-Initialisierung erfolgreich:', data.statistics);
+                    
+                    // Benachrichtige über Initialisierung
+                    this.notifyCallbacks({
+                        type: 'initialization',
+                        results: data.results,
+                        statistics: data.statistics,
+                        message: data.message
+                    });
+                    
+                    // Erzwinge Update nach Initialisierung
+                    await this.forceUpdate();
+                    
+                    return data;
+                } else {
+                    throw new Error(data.error || 'Initialisierung fehlgeschlagen');
+                }
+            } else {
+                throw new Error(`HTTP ${response.status}`);
+            }
+            
+        } catch (error) {
+            console.error('❌ Fehler bei Steckdosen-Initialisierung:', error);
+            throw error;
+        }
+    }
+}
+
+// Globale Instanz
+window.printerMonitor = new PrinterMonitor();
+
+// Auto-Start wenn DOM bereit ist
+document.addEventListener('DOMContentLoaded', () => {
+    // Nur starten wenn wir auf einer relevanten Seite sind
+    const relevantPages = ['/printers', '/dashboard', '/admin', '/admin-dashboard'];
+    const currentPath = window.location.pathname;
+    
+    if (relevantPages.some(page => currentPath.includes(page))) {
+        console.log('🖨️ Auto-Start PrinterMonitor für Seite:', currentPath);
+        window.printerMonitor.start();
+    }
+});
+
+// Automatisches Cleanup bei Seitenverlassen
+window.addEventListener('beforeunload', () => {
+    if (window.printerMonitor) {
+        window.printerMonitor.stop();
+    }
+});
+
+// Export für Module
+if (typeof module !== 'undefined' && module.exports) {
+    module.exports = PrinterMonitor;
+} 
\ No newline at end of file