- Set up Vitest with jsdom for client tests, node for server tests
- Add tests for auth service, proxy handler, API client, and profiles store
- Strip Authorization header in proxy to prevent web-ui token leaking to gateway
- Distinguish local BFF vs proxied gateway 401s to avoid false logouts
- Remove unused hero.png asset
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>