The login page design components use Tailwind utility classes but
tailwindcss, postcss, and autoprefixer were never added to the web
app's dependencies. Without these, @tailwind directives in globals.css
produce no output and all utility classes render as plain strings.
Adds:
- tailwindcss, postcss, autoprefixer as devDependencies
- tailwind.config.ts with dark mode class strategy and UI package
content scanning
- postcss.config.mjs with tailwindcss + autoprefixer plugins
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
