🐛 Refactor: Cleaned up unnecessary files and documents for improved project organization.

backend/app.py

@@ -4377,7 +4377,7 @@ def export_guest_requests():
                 req.otp_code or ''
             ])
         
-                db_session.close()
+        db_session.close()
         
         # Response erstellen
         output.seek(0)
@@ -4401,7 +4401,6 @@ def export_guest_requests():
 
 # ===== AUTO-OPTIMIERUNG-API-ENDPUNKTE =====
 
-
 @app.route('/api/optimization/auto-optimize', methods=['POST'])
 @login_required
 def auto_optimize_jobs():
@@ -4422,7 +4421,7 @@ def auto_optimize_jobs():
         ).all()
         
         if not pending_jobs:
-                db_session.close()
+            db_session.close()
             return jsonify({
                 'success': True,
                 'message': 'Keine Jobs zur Optimierung verfügbar',