Altera lógica de Site Section e adiciona redirect em content_page

- Adiciona campo field_redirect_link (link) no bundle content_page;
  EventSubscriber emite redirect 301 quando o campo está preenchido
- field_site_section passa a ser obrigatório
- Formulário de content_page: AJAX no site section, select hierárquico
  de página pai filtrado por seção, validação customizada
- StructuralPagesMenuBlock: MAX_DEPTH 10→50, nova lógica de raiz via
  field_site_section, variável ancestor_url no render array
- Template do menu: novas classes BEM/Gva, suporte a is_redirect,
  usa ancestor_url em vez de chamada Twig direta
- CSS do menu reescrito com estilos flyout/sidebar; Select2 adicionado
  para o campo de página pai no formulário admin
- display_submitted desabilitado no tipo content_page

Co-Authored-By: Bauer <henrique@webcontent.com.br>
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

css/structural-pages-menu.css

@@ -1,63 +1,103 @@
 /**
- * @file
- * Styles for the structural pages menu block.
+ * Structural Pages Menu - Custom Flyout Styles
+ * Ensures the nested menu items fly out to the right exactly like the Gavias theme reference menu.
  */
 
-.structural-pages-menu {
-  font-size: 0.9rem;
+.block-structural-pages-menu {
+  padding: 0 !important;
 }
 
-.structural-pages-menu__title {
-  font-size: 1.1rem;
-  margin-bottom: 0.75rem;
-  padding-bottom: 0.5rem;
-  border-bottom: 1px solid #ddd;
+/* Apply the gray background and padding directly to the nav so it remains styled even if detached by the sticky script */
+.sidebar .structural-pages-menu {
+  padding: 30px;
+  background-color: #f3f3f3;
+  border-radius: 10px;
+  width: 100%;
 }
 
-.structural-pages-menu__title a {
-  text-decoration: none;
-  color: inherit;
+/* Remove the padding and background from the outer Drupal block wrapper to avoid double padding */
+.sidebar [id^="block-structuralpagesmenublock"] {
+  padding: 0 !important;
+  background: transparent !important;
 }
 
-.structural-pages-menu__title a:hover {
-  text-decoration: underline;
+/* Position relative on parent items to anchor the absolute sub-menu */
+.structural-pages-menu .structural-pages-menu__item {
+  position: relative;
 }
 
-.structural-pages-menu__list {
+/* Hide sub-menus by default and position them to the right */
+.structural-pages-menu .sub-menu {
+  position: absolute;
+  top: 0;
+  left: 100%;
+  visibility: hidden;
+  opacity: 0;
+  min-width: 260px;
+  background-color: #ffffff;
+  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
+  z-index: 999;
+  transition: all 0.25s ease-out;
+  transform: translateY(10px);
+  pointer-events: none;
+  border-left: 2px solid var(--notech-theme-color, #db162f);
   list-style: none;
-  margin: 0;
   padding: 0;
+  margin: 0;
 }
 
-.structural-pages-menu__list--level-2,
-.structural-pages-menu__list--level-3,
-.structural-pages-menu__list--level-4 {
-  padding-left: 1rem;
+/* Show submenu on hover or focus */
+.structural-pages-menu .structural-pages-menu__item:hover>.sub-menu,
+.structural-pages-menu .structural-pages-menu__item:focus-within>.sub-menu {
+  visibility: visible;
+  opacity: 1;
+  transform: translateY(0);
+  pointer-events: auto;
+  padding: 5px 30px !important;
 }
 
-.structural-pages-menu__item {
-  margin: 0.25rem 0;
+/* Add an indicator icon (arrow) to items that have children */
+.structural-pages-menu .structural-pages-menu__item--has-children>a::after {
+  content: " \203A";
+  float: right;
+  font-family: monospace;
+  font-size: 1.4em;
+  font-weight: bold;
+  line-height: 0.8;
+  opacity: 0.4;
+  transition: opacity 0.2s;
 }
 
-.structural-pages-menu__link {
+.structural-pages-menu .structural-pages-menu__item--has-children:hover>a::after {
+  opacity: 1;
+}
+
+/* Styles for the links inside the flyout menus */
+.structural-pages-menu .sub-menu>li>a {
   display: block;
-  padding: 0.25rem 0.5rem;
+  padding: 12px 20px;
+  font-size: 14px;
+  color: #333333;
   text-decoration: none;
-  color: #333;
-  border-radius: 3px;
-  transition: background-color 0.15s ease;
+  border-bottom: 1px solid #f2f2f2;
+  transition: all 0.2s ease;
+  background-color: transparent;
+  font-weight: 500;
 }
 
-.structural-pages-menu__link:hover {
-  background-color: #f5f5f5;
-  text-decoration: none;
+.structural-pages-menu .sub-menu>li:last-child>a {
+  border-bottom: none;
 }
 
-.structural-pages-menu__link--active-trail {
-  font-weight: 600;
-  color: #0073bd;
+.structural-pages-menu .sub-menu>li>a:hover {
+  color: var(--notech-theme-color, #db162f);
+  background-color: #fcfcfc;
+  padding-left: 25px;
+  /* Subtle interactively indication */
 }
 
-.structural-pages-menu__item--active-trail > .structural-pages-menu__link {
-  background-color: #e8f4fc;
-}
+/* Ensure active trail items inside submenu remain highlighted */
+.structural-pages-menu .sub-menu .menu-item--active-trail>a,
+.structural-pages-menu .sub-menu .is-active {
+  color: var(--notech-theme-color, #db162f);
+}