feat(auth): add opaque bearer sessions

server/tests/test_steward_action_executor.py

@@ -3,6 +3,7 @@ from __future__ import annotations
 from collections.abc import Generator
 from datetime import UTC, datetime
 
+from auth_helpers import install_legacy_header_auth_override
 from fastapi.testclient import TestClient
 from sqlalchemy import create_engine, select
 from sqlalchemy.orm import Session, sessionmaker
@@ -30,6 +31,7 @@ def build_session_factory() -> sessionmaker[Session]:
 def build_client() -> tuple[TestClient, sessionmaker[Session]]:
     session_factory = build_session_factory()
     app = create_app()
+    install_legacy_header_auth_override(app)
 
     def override_db() -> Generator[Session, None, None]:
         db = session_factory()