[V1.0] Working application, added notifications.

Ready to upload to store.

backend/core/database.py

@@ -11,9 +11,10 @@ _SessionLocal = None
 
 settings.DB_URL = f"postgresql://{settings.DB_USER}:{settings.DB_PASSWORD}@{settings.DB_HOST}:{settings.DB_PORT}/{settings.DB_NAME}"
 
+
 def get_engine():
     global _engine
-    if (_engine is None):
+    if _engine is None:
         if not settings.DB_URL:
             raise ValueError("DB_URL is not set in Settings.")
         print(f"Connecting to database at {settings.DB_URL}")