feat: ora i menu a tendina sono freccettabili. fix: sistemata la modifica massiva nella pagina ricerca spudorata

public/js/app.js

@@ -1080,6 +1080,67 @@ const App = {
       });
     });
   },
+
+  /**
+   * Helper to enable arrow keys (Up/Down), Enter, and Escape navigation on autocomplete inputs.
+   * @param {HTMLInputElement} inputEl 
+   * @param {HTMLElement} suggestionsEl 
+   * @param {Function} onSelect Callback(itemElement) when an item is selected via Enter or Click
+   */
+  setupAutocompleteKeyboardNavigation(inputEl, suggestionsEl, onSelect) {
+    if (!inputEl || !suggestionsEl) return;
+
+    inputEl.addEventListener('keydown', (e) => {
+      if (suggestionsEl.style.display === 'none' || !suggestionsEl.children.length) {
+        return;
+      }
+
+      const items = Array.from(suggestionsEl.querySelectorAll('.autocomplete-suggestion-item[data-id]'));
+      if (items.length === 0) return;
+
+      let currentIndex = items.findIndex(item => item.classList.contains('selected'));
+
+      if (e.key === 'ArrowDown') {
+        e.preventDefault();
+        if (currentIndex < items.length - 1) {
+          currentIndex++;
+        } else {
+          currentIndex = 0;
+        }
+        items.forEach((item, idx) => {
+          if (idx === currentIndex) {
+            item.classList.add('selected');
+            item.scrollIntoView({ block: 'nearest' });
+          } else {
+            item.classList.remove('selected');
+          }
+        });
+      } else if (e.key === 'ArrowUp') {
+        e.preventDefault();
+        if (currentIndex > 0) {
+          currentIndex--;
+        } else {
+          currentIndex = items.length - 1;
+        }
+        items.forEach((item, idx) => {
+          if (idx === currentIndex) {
+            item.classList.add('selected');
+            item.scrollIntoView({ block: 'nearest' });
+          } else {
+            item.classList.remove('selected');
+          }
+        });
+      } else if (e.key === 'Enter') {
+        if (currentIndex >= 0 && items[currentIndex]) {
+          e.preventDefault();
+          e.stopPropagation();
+          onSelect(items[currentIndex]);
+        }
+      } else if (e.key === 'Escape') {
+        suggestionsEl.style.display = 'none';
+      }
+    });
+  },
 };
 
 // Start the app when DOM is ready