Implement complete multi-language support with Romanian/English

- Added next-intl for internationalization with Romanian as default locale
- Restructured app directory with [locale] routing (/ro, /en)
- Created comprehensive translation files for both languages
- Fixed Next.js 15 async params compatibility in layout components
- Updated all components to use proper i18n hooks and translations
- Configured middleware for locale routing and fallbacks
- Fixed FloatingChat component translation array handling
- Restored complete home page with internationalized content
- Fixed Material-UI Slide component prop error (mountOnExit → unmountOnExit)

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

next.config.js

@@ -1,6 +1,9 @@
+const withNextIntl = require('next-intl/plugin')('./i18n.ts');
+
 /** @type {import('next').NextConfig} */
 const nextConfig = {
   output: 'standalone',
+  typedRoutes: false,
 }
 
-module.exports = nextConfig
+module.exports = withNextIntl(nextConfig)