Extract Leftbar and Add Tag controllers

assets/controllers/add_tag_controller.js

@@ -0,0 +1,13 @@
+import { Controller } from '@hotwired/stimulus';
+
+export default class extends Controller {
+  static targets = ['input'];
+
+  toggle() {
+    this.element.classList.toggle('hidden');
+
+    if (!this.element.classList.contains('hidden')) {
+      this.inputTarget.focus();
+    }
+  }
+}

assets/controllers/leftbar_controller.js

@@ -0,0 +1,7 @@
+import { Controller } from '@hotwired/stimulus';
+
+export default class extends Controller {
+  toggleAddTagForm() {
+    this.dispatch('toggleAddTagForm');
+  }
+}

assets/index.js

@@ -128,12 +128,3 @@ import './scss/index.scss';
   preferedColorScheme.init();
   addDarkThemeListeners();
 }());
-
-$(document).ready(() => {
-  $('#nav-btn-add-tag').on('click', () => {
-    $('.nav-panel-add-tag').toggle();
-    $('.nav-panel-menu').addClass('hidden');
-    $('#tag_label').focus();
-    return false;
-  });
-});