src/app.py : initialisation de l'authentification au démarrage (#73)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

tests/auth/test_app_integration.py

@@ -0,0 +1,8 @@
+def test_app_imports_cleanly(users_db_path):
+    from src.app import app
+
+    assert app is not None
+    # Flask-Login manager attaché
+    assert "login_manager" in app.server.extensions or hasattr(
+        app.server, "login_manager"
+    )