feat(auth): add opaque bearer sessions

server/tests/test_backend_pagination.py

@@ -4,6 +4,7 @@ from collections.abc import Generator
 from datetime import UTC, datetime
 from decimal import Decimal
 
+from auth_helpers import install_legacy_header_auth_override
 from fastapi.testclient import TestClient
 from sqlalchemy import create_engine
 from sqlalchemy.orm import Session, sessionmaker
@@ -25,6 +26,7 @@ def build_client() -> tuple[TestClient, sessionmaker[Session]]:
     Base.metadata.create_all(bind=engine)
     session_factory = sessionmaker(bind=engine, autoflush=False, autocommit=False)
     app = create_app()
+    install_legacy_header_auth_override(app)
 
     def override_db() -> Generator[Session, None, None]:
         db = session_factory()
@@ -112,7 +114,10 @@ def test_expense_claims_support_page_envelope_and_keep_legacy_list() -> None:
 def test_employee_directory_supports_backend_pagination() -> None:
     client, _ = build_client()
 
-    response = client.get("/api/v1/employees?page=2&page_size=10")
+    response = client.get(
+        "/api/v1/employees?page=2&page_size=10",
+        headers={"x-auth-username": "admin"},
+    )
 
     assert response.status_code == 200
     payload = response.json()