Checkpoint React frontend migration

backend/test_fetch.py

@@ -0,0 +1,9 @@
+import asyncio
+from fastapi.testclient import TestClient
+from app.main import app
+
+client = TestClient(app)
+client.post("/admin/login", data={"username": "admin", "password": "password"})
+response = client.get("/admin/hierarchy")
+print(response.status_code)
+print(response.text)