File SecretsManager.test.tsx

frontend/src/pages/__tests__/SecretsManager.test.tsx:None–None

import { describe, it, beforeEach, afterEach, expect, mock } from 'bun:test';
import { fireEvent, render, screen, within, cleanup } from '@testing-library/react';
import { MemoryRouter } from 'react-router-dom';
import type { SecretSummary } from '@/schemas/secret';