- Replace default Vite favicon and title with project-specific branding
- Add axios response interceptor to handle 401 by clearing token and redirecting to login
- Move health check endpoint from '/' to '/api/health' so SPA index.html is served on root
- Integrate next-themes ThemeProvider with system preference detection and manual toggle
- Update docker-compose and k8s health check paths accordingly
- Replace hardcoded dark-only colors with semantic CSS variable tokens for theme compatibility