- Add self-hosted style.css replacing Bootstrap CDN dependency
- Add profile.html with tabbed view (account info, emails/aliases, API token)
- Refactor login handler to pass structured data to template instead of building HTML strings
- Add brand-name and brand-logo flags/env vars for UI customization
- Update CSP to allow brand logo domain and remove CDN references
- Update all templates to pass template vars to header/footer and use new CSS classes
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>