📚 Improved backend structure & documentation, added new features, and refactored scripts. 🚀🔧📝💻🖥️

backend/models.py

@@ -18,6 +18,16 @@ import secrets
 from config.settings import DATABASE_PATH, ensure_database_directory
 from utils.logging_config import get_logger
 
+# ===== DATABASE CLEANUP INTEGRATION =====
+# Importiere den neuen Cleanup-Manager
+try:
+    from utils.database_cleanup import get_cleanup_manager
+    CLEANUP_MANAGER_AVAILABLE = True
+except ImportError:
+    CLEANUP_MANAGER_AVAILABLE = False
+    logger = get_logger("app")
+    logger.warning("DatabaseCleanupManager nicht verfügbar - Fallback auf Legacy-Cleanup")
+
 Base = declarative_base()
 logger = get_logger("app")
 
@@ -121,6 +131,16 @@ def create_optimized_engine():
         # Regelmäßige Wartungsaufgaben
         event.listen(_engine, "connect", lambda conn, rec: schedule_maintenance())
         
+        # ===== CLEANUP MANAGER INTEGRATION =====
+        # Registriere Engine beim Cleanup-Manager für sicheres Shutdown
+        if CLEANUP_MANAGER_AVAILABLE:
+            try:
+                cleanup_manager = get_cleanup_manager()
+                cleanup_manager.register_engine(_engine)
+                logger.debug("Engine beim DatabaseCleanupManager registriert")
+            except Exception as e:
+                logger.warning(f"Fehler bei Cleanup-Manager-Registrierung: {e}")
+        
         logger.info(f"Optimierte SQLite-Engine erstellt: {DATABASE_PATH}")
         
     return _engine