"Refactor template files for calendar and guest status"

backend/app/app.py

@@ -77,6 +77,12 @@ try:
 except ImportError:
     backup_manager = None
 
+# Import neuer Systeme
+from utils.rate_limiter import limit_requests, rate_limiter, cleanup_rate_limiter
+from utils.security import init_security, require_secure_headers, security_check
+from utils.permissions import init_permission_helpers, require_permission, Permission, check_permission
+from utils.analytics import analytics_engine, track_event, get_dashboard_stats
+
 # Flask-App initialisieren
 app = Flask(__name__)
 app.secret_key = SECRET_KEY
@@ -87,6 +93,15 @@ app.config["WTF_CSRF_ENABLED"] = True
 # CSRF-Schutz initialisieren
 csrf = CSRFProtect(app)
 
+# Security-System initialisieren
+app = init_security(app)
+
+# Permission Template Helpers registrieren
+init_permission_helpers(app)
+
+# Template-Helper registrieren
+register_template_helpers(app)
+
 # CSRF-Error-Handler - Korrigierte Version für Flask-WTF 1.2.1+
 @app.errorhandler(CSRFError)
 def csrf_error(error):