"Feat: Integrate job scheduler in backend"

backend/app/app.py

@@ -3,16 +3,24 @@ import sys
 import logging
 import atexit
 from datetime import datetime, timedelta
-from flask import Flask, render_template, request, jsonify, redirect, url_for, flash, send_file, abort, session
+from flask import Flask, render_template, request, jsonify, redirect, url_for, flash, send_file, abort, session, make_response
 from flask_login import LoginManager, login_user, logout_user, login_required, current_user
+from flask_wtf import CSRFProtect
+from flask_wtf.csrf import CSRFError
 from werkzeug.utils import secure_filename
+from werkzeug.security import generate_password_hash, check_password_hash
 from sqlalchemy.orm import sessionmaker, joinedload
 from sqlalchemy import func
+from functools import wraps
+from concurrent.futures import ThreadPoolExecutor, as_completed
+from typing import List, Dict, Tuple
+import time
+import subprocess
+import json
 
 # Lokale Imports
 from models import init_database, create_initial_admin, User, Printer, Job, Stats, SystemLog, get_db_session, GuestRequest, UserPermission, Notification
 from utils.logging_config import setup_logging, get_logger, measure_execution_time, log_startup_info, debug_request, debug_response
-from utils.file_manager import FileManager
 from utils.job_scheduler import JobScheduler, get_job_scheduler
 from utils.queue_manager import start_queue_manager, stop_queue_manager, get_queue_manager
 from config.settings import SECRET_KEY, UPLOAD_FOLDER, ALLOWED_EXTENSIONS, ENVIRONMENT, SESSION_LIFETIME