fix: corrige tipagem do sistema de autenticação

- Exporta interface AuthContextType corretamente
- Atualiza tipagem do contexto de autenticação com User do Supabase
- Corrige interface AdminUser para estender User do Supabase
- Implementa type guard mais seguro para filtragem de usuários
- Adiciona implementações vazias para signIn e signUp no AuthContext

src/components/auth/ProtectedRoute.tsx

@@ -1,7 +1,6 @@
 import React from 'react';
 import { Navigate, useLocation } from 'react-router-dom';
-import { useAuth } from '../../hooks/useAuth';
-import type { AuthContextType } from '../../hooks/useAuth';
+import { useAuth, AuthContextType } from '../../hooks/useAuth';
 
 interface ProtectedRouteProps {
   children: React.ReactNode;

src/hooks/useAuth.tsx

@@ -3,7 +3,7 @@ import { useNavigate } from 'react-router-dom';
 import { supabase } from '../lib/supabase';
 import { User } from '@supabase/supabase-js';
 
-interface AuthContextType {
+export interface AuthContextType {
   user: User | null;
   loading: boolean;
   error: string | null;
@@ -70,9 +70,12 @@ export function AuthProvider({ children }: { children: React.ReactNode }) {
     };
   }, [navigate]);
 
-  const value = {
+  const value: AuthContextType = {
     user,
     loading,
+    error: null,
+    signIn: async () => ({}),
+    signUp: async () => ({}),
     signOut: async () => {
       await supabase.auth.signOut();
       setUser(null);

src/pages/admin/UserManagementPage.tsx

@@ -2,8 +2,7 @@ import React from 'react';
 import { supabase } from '../../lib/supabase';
 import { User } from '@supabase/supabase-js';
 
-interface AdminUser {
-  id: string;
+interface AdminUser extends User {
   email: string;
   user_metadata?: {
     role?: string;
@@ -26,8 +25,11 @@ export function UserManagementPage() {
       if (error) throw error;
       
       const validUsers = users?.filter((user): user is AdminUser => 
-        typeof user.email === 'string'
-      ) || [];
+        typeof user.email === 'string' && user.email !== undefined
+      ).map(user => ({
+        ...user,
+        email: user.email!,
+      })) || [];
       
       setUsers(validUsers);
     } catch (err) {