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>

hooks/use-auth.ts

@@ -1,44 +1,2 @@
-import { useEffect } from 'react'
-import { useStore } from '@/lib/store'
-
-export function useAuth() {
-  const { user, setUser } = useStore()
-
-  useEffect(() => {
-    const token = localStorage.getItem('authToken')
-    if (token && !user) {
-      // Validate token and get user info
-      fetch('/api/auth/me', {
-        headers: {
-          'Authorization': `Bearer ${token}`
-        }
-      })
-      .then(res => res.json())
-      .then(data => {
-        if (data.user) {
-          setUser(data.user)
-        } else {
-          localStorage.removeItem('authToken')
-        }
-      })
-      .catch(() => {
-        localStorage.removeItem('authToken')
-      })
-    }
-  }, [user, setUser])
-
-  const logout = () => {
-    setUser(null)
-    localStorage.removeItem('authToken')
-  }
-
-  const isAuthenticated = !!user
-  const token = typeof window !== 'undefined' ? localStorage.getItem('authToken') : null
-
-  return {
-    user,
-    isAuthenticated,
-    token,
-    logout
-  }
-}
+// Re-export the auth context hook
+export { useAuth } from '@/components/auth/auth-provider'