Fix authentication state persistence and admin role display

- Implement complete authentication system with JWT token validation
- Add auth provider with persistent login state across page refreshes
- Create multilingual login/register forms with Material-UI components
- Fix token validation using raw SQL queries to bypass Prisma sync issues
- Add comprehensive error handling for expired/invalid tokens
- Create profile and settings pages with full i18n support
- Add proper user role management (admin/user) with database sync
- Implement secure middleware with CSRF protection and auth checks
- Add debug endpoints for troubleshooting authentication issues
- Fix Zustand store persistence for authentication state

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

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

app/api/auth/me/route.ts

@@ -3,23 +3,46 @@ import { getUserFromToken } from '@/lib/auth'
 
 export const runtime = 'nodejs'
 
+function getErrorMessages(locale: string = 'ro') {
+  const messages = {
+    ro: {
+      tokenRequired: 'Token de autentificare necesar',
+      invalidToken: 'Token invalid',
+      serverError: 'Eroare de server'
+    },
+    en: {
+      tokenRequired: 'Authentication token required',
+      invalidToken: 'Invalid token',
+      serverError: 'Server error'
+    }
+  }
+  return messages[locale as keyof typeof messages] || messages.ro
+}
+
 export async function GET(request: Request) {
   try {
+    const url = new URL(request.url)
+    const locale = url.searchParams.get('locale') || 'ro'
+    const messages = getErrorMessages(locale)
+
     const authHeader = request.headers.get('authorization')
     const token = authHeader?.replace('Bearer ', '')
 
     if (!token) {
-      return NextResponse.json({ error: 'Token de autentificare necesar' }, { status: 401 })
+      return NextResponse.json({ error: messages.tokenRequired }, { status: 401 })
     }
 
     const user = await getUserFromToken(token)
     if (!user) {
-      return NextResponse.json({ error: 'Token invalid' }, { status: 401 })
+      return NextResponse.json({ error: messages.invalidToken }, { status: 401 })
     }
 
     return NextResponse.json({ user })
   } catch (error) {
     console.error('User validation error:', error)
-    return NextResponse.json({ error: 'Eroare de server' }, { status: 500 })
+    const url = new URL(request.url)
+    const locale = url.searchParams.get('locale') || 'ro'
+    const messages = getErrorMessages(locale)
+    return NextResponse.json({ error: messages.serverError }, { status: 500 })
   }
 }