feat: View mode por role/usuário com seletor de visibilidade no perfil

- Cria view mode e display 'restricted' (template mostra só username + mensagem)
- Adiciona campo field_user_selected_view_mode (string, default: restricted)
- update_10006: provisiona view mode, display e campo; inicializa role_view_modes
- Seletor de visibilidade no form de edição do perfil (owner e admin)
- hook_entity_view_mode_alter lê o campo e valida existência do display
- Formulário de admin: checkboxes de view modes por role (exceto anonymous e authenticated)
- Schema YAML completo para site_users.settings incluindo role_view_modes
- Tradução pt-BR de todas as novas strings

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/Form/SiteUsersSettingsForm.php

@@ -145,9 +145,62 @@ class SiteUsersSettingsForm extends ConfigFormBase {
       ];
     }
 
+    // Fieldset para view modes por role.
+    $form['role_view_modes'] = [
+      '#type' => 'fieldset',
+      '#title' => $this->t('Profile visibility options by role'),
+      '#description' => $this->t('Select which view modes each role can choose for their public profile. The "restricted" option is always available to all users.'),
+      '#tree' => TRUE,
+    ];
+
+    $available_view_modes = $this->getCustomUserViewModes();
+
+    if (empty($available_view_modes)) {
+      $form['role_view_modes']['_empty'] = [
+        '#markup' => '<p>' . $this->t('No custom view modes found for user entities. Create view modes at <a href=":url">Manage display</a>.', [
+          ':url' => '/admin/config/people/accounts/display',
+        ]) . '</p>',
+      ];
+    }
+    else {
+      $roles = \Drupal\user\Entity\Role::loadMultiple();
+      foreach ($roles as $role_id => $role) {
+        if (in_array($role_id, ['anonymous', 'authenticated'])) {
+          continue;
+        }
+        $form['role_view_modes'][$role_id] = [
+          '#type' => 'checkboxes',
+          '#title' => $role->label(),
+          '#options' => $available_view_modes,
+          '#default_value' => $config->get('role_view_modes.' . $role_id) ?? [],
+        ];
+      }
+    }
+
     return parent::buildForm($form, $form_state);
   }
 
+  /**
+   * Returns custom user view modes (excluding 'default' and 'restricted').
+   *
+   * @return array
+   *   Associative array of machine_name => label.
+   */
+  protected function getCustomUserViewModes(): array {
+    $view_mode_storage = \Drupal::entityTypeManager()->getStorage('entity_view_mode');
+    $view_modes = $view_mode_storage->loadByProperties(['targetEntityType' => 'user']);
+    $options = [];
+    foreach ($view_modes as $view_mode) {
+      $id_parts = explode('.', $view_mode->id());
+      $machine_name = end($id_parts);
+      if ($machine_name === 'default' || $machine_name === 'restricted') {
+        continue;
+      }
+      $options[$machine_name] = $view_mode->label();
+    }
+    return $options;
+  }
+
   /**
    * {@inheritdoc}
    */
@@ -177,6 +230,17 @@ class SiteUsersSettingsForm extends ConfigFormBase {
       }
     }
 
+    // Salvar role_view_modes: apenas os valores marcados (filtrar 0).
+    $role_view_modes_raw = $form_state->getValue('role_view_modes') ?? [];
+    $roles = \Drupal\user\Entity\Role::loadMultiple();
+    foreach ($roles as $role_id => $role) {
+      if ($role_id === 'anonymous' || !isset($role_view_modes_raw[$role_id])) {
+        continue;
+      }
+      $selected = array_values(array_filter($role_view_modes_raw[$role_id]));
+      $config->set('role_view_modes.' . $role_id, $selected);
+    }
+
     $config->save();
 
     parent::submitForm($form, $form_state);