- RequireAuth: use setTimeout to defer clientReady=true until after hydration completes, preventing SSR/client mismatch
- dashboard.tsx: add SSR guard to return empty div on server
- playwright tests for dashboard role verification
- Add vitest, Playwright, ESLint, Prettier configs
- Add unit tests and e2e accessibility/visual tests
- Add MSW mocks and test setup
- Update scripts and .gitignore
- Install required dev dependencies
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