Corrige erros de definição de biblioteca e esgotamento de memória no MSC 2020

Remove entrada de biblioteca vazia 'msc_term_select_widget' que causava
IncompleteLibraryDefinitionException. Otimiza buildTermData() para não
instanciar 597 entidades de taxonomia completas: usa loadTree() sem
entidades e busca field_msc_code diretamente na tabela do campo,
eliminando o fatal de memória esgotada (128 MB) ao abrir o modal
de configuração do campo.

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

modules/site_tools_msc_2020/site_tools_msc_2020.libraries.yml

@@ -1,6 +1,3 @@
-msc_term_select_widget:
-  version: VERSION
-
 msc_term_list:
   version: VERSION
   css:

modules/site_tools_msc_2020/src/Plugin/Field/FieldWidget/MscTermSelectWidget.php

@@ -4,6 +4,7 @@ namespace Drupal\site_tools_msc_2020\Plugin\Field\FieldWidget;
 
 use Drupal\Component\Utility\Html;
 use Drupal\Component\Utility\NestedArray;
+use Drupal\Core\Database\Connection;
 use Drupal\Core\Entity\EntityTypeManagerInterface;
 use Drupal\Core\Field\FieldDefinitionInterface;
 use Drupal\Core\Field\FieldItemListInterface;
@@ -42,6 +43,7 @@ class MscTermSelectWidget extends WidgetBase {
     array $settings,
     array $third_party_settings,
     protected EntityTypeManagerInterface $entityTypeManager,
+    protected Connection $database,
   ) {
     parent::__construct($plugin_id, $plugin_definition, $field_definition, $settings, $third_party_settings);
   }
@@ -54,6 +56,7 @@ class MscTermSelectWidget extends WidgetBase {
       $configuration['settings'],
       $configuration['third_party_settings'],
       $container->get('entity_type.manager'),
+      $container->get('database'),
     );
   }
 
@@ -260,6 +263,9 @@ class MscTermSelectWidget extends WidgetBase {
   /**
    * Carrega todos os termos msc_2020 e retorna arrays por nível.
    *
+   * Usa loadTree() sem entidades completas e busca field_msc_code direto na
+   * tabela do campo, evitando instanciar 597 objetos de entidade.
+   *
    * @return array{
    *   l1: array<int,string>,
    *   l2: array<int,array<int,string>>,
@@ -267,48 +273,59 @@ class MscTermSelectWidget extends WidgetBase {
    * }
    */
   protected function buildTermData(int $max_depth): array {
+    // Stubs leves: têm tid e name, sem carregar campos personalizados.
     $tree = $this->entityTypeManager
       ->getStorage('taxonomy_term')
-      ->loadTree('msc_2020', 0, NULL, TRUE);
+      ->loadTree('msc_2020', 0, NULL, FALSE);
+
+    // Busca todos os valores de field_msc_code em uma única query.
+    $codes = $this->database
+      ->select('taxonomy_term__field_msc_code', 'c')
+      ->fields('c', ['entity_id', 'field_msc_code_value'])
+      ->execute()
+      ->fetchAllKeyed();
+
+    // Indexa os stubs por tid.
+    $stubs = [];
+    foreach ($tree as $stub) {
+      $stubs[(int) $stub->tid] = $stub;
+    }
 
     $code_to_tid = [];
     $l1 = [];
     $l2 = [];
     $l3 = [];
 
-    // Primeira passagem: monta mapa código→TID e coleta L1.
+    foreach ($stubs as $tid => $stub) {
-    foreach ($tree as $term) {
+      $code = $codes[$tid] ?? '';
-      $code = $term->get('field_msc_code')->value;
+      if ($code === '') {
-      $tid  = (int) $term->id();
+        continue;
+      }
       $code_to_tid[$code] = $tid;
       if (strlen($code) === 2) {
-        $l1[$tid] = $code . ' — ' . $term->label();
+        $l1[$tid] = $code . ' — ' . $stub->name;
       }
     }
 
     if ($max_depth >= 2) {
-      foreach ($tree as $term) {
+      foreach ($stubs as $tid => $stub) {
-        $code = $term->get('field_msc_code')->value;
+        $code = $codes[$tid] ?? '';
         if (strlen($code) === 3) {
-          $parent_code = substr($code, 0, 2);
+          $parent_tid = $code_to_tid[substr($code, 0, 2)] ?? NULL;
-          $parent_tid  = $code_to_tid[$parent_code] ?? NULL;
           if ($parent_tid !== NULL) {
-            $tid = (int) $term->id();
+            $l2[$parent_tid][$tid] = $code . ' — ' . $stub->name;
-            $l2[$parent_tid][$tid] = $code . ' — ' . $term->label();
           }
         }
       }
     }
 
     if ($max_depth >= 3) {
-      foreach ($tree as $term) {
+      foreach ($stubs as $tid => $stub) {
-        $code = $term->get('field_msc_code')->value;
+        $code = $codes[$tid] ?? '';
         if (strlen($code) === 5) {
-          $parent_code = substr($code, 0, 3);
+          $parent_tid = $code_to_tid[substr($code, 0, 3)] ?? NULL;
-          $parent_tid  = $code_to_tid[$parent_code] ?? NULL;
           if ($parent_tid !== NULL) {
-            $tid = (int) $term->id();
+            $l3[$parent_tid][$tid] = $code . ' — ' . $stub->name;
-            $l3[$parent_tid][$tid] = $code . ' — ' . $term->label();
           }
         }
       }