fixed linting issues

backend/core/config.py

@@ -1,6 +1,5 @@
 # core/config.py
 from pydantic_settings import BaseSettings
-from pydantic import Field # Import Field for potential default values if needed
 import os
 
 DOTENV_PATH = os.path.join(os.path.dirname(__file__), "../.env")

backend/core/database.py

@@ -19,7 +19,7 @@ def get_engine():
         _engine = create_engine(settings.DB_URL)
         try:
             _engine.connect()
-        except Exception as e:
+        except Exception:
             raise Exception("Database connection failed. Is the database server running?")
         Base.metadata.create_all(_engine)  # Create tables here
     return _engine