[settings] fuck it, rework the settings again

this time using pydantic-settings as a base
- removed all os.getenv calls
- removed the secret_key default option
- reworked database loading, creating tables
- prob. something else also but its 4:30 and i have to sleep

test/conftest.py

@@ -1,3 +1,4 @@
+import os
 from datetime import time
 
 import pytest
@@ -5,6 +6,9 @@ from fastapi.testclient import TestClient
 from sqlalchemy.pool import StaticPool
 from sqlmodel import Session, SQLModel, create_engine
 
+os.environ["SECRET_KEY"] = "ff" * 16
+
+from app.main import app
 from app.model.models import (
     AccessAuthorizationDB,
     Card,
@@ -24,16 +28,6 @@ engine = create_engine(
 )
 
 
-@pytest.fixture
-def app():
-    import os
-
-    os.environ["SECRET_KEY"] = "ff" * 16
-    from app.main import app
-
-    return app
-
-
 @pytest.fixture(scope="function")
 def db_session():
     """Create a fresh database session for each test."""
@@ -44,7 +38,7 @@ def db_session():
 
 
 @pytest.fixture(scope="function")
-def client(app, db_session):
+def client(db_session):
     """Create a test client with a database session override."""
 
     def override_get_session():

test/test_services/test_database.py

@@ -9,10 +9,10 @@ def test_create_db_and_tables():
     # This is primarily an integration test
     from sqlalchemy import inspect
 
-    from app.services.database import engine
+    from app.services.database import get_engine
 
     create_db_and_tables()
-    inspector = inspect(engine)
+    inspector = inspect(get_engine())
 
     # Check that tables exist
     tables = inspector.get_table_names()