Establish the testing safety net for the web dashboard before refactoring.
- Vitest + React Testing Library + jsdom for unit/component tests
- MSW node server mocks the API; unhandled requests throw so tests can
never reach a real backend
- Playwright e2e boots the real Next app but intercepts every /api/v1 call
with shared fixtures, and mints a NextAuth session cookie to run authed
- Shared fixtures in test/fixtures.ts back both layers
- Seed tests: Button unit tests, MSW sanity checks, and a dashboard e2e
happy path plus an auth-guard redirect
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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