Add "Do not translate" functionality to TinyMCE editor

- Add a custom TinyMCE plugin to mark content with `translate="no"`.
- Update WYSIWYG editor to support the "Do not translate" toggle button and menu item.
- Highlight non-translatable content with custom styles in the editor.
- Localize plugin strings for English and Russian.

app/application/lang/en/editor.php

@@ -0,0 +1,6 @@
+<?php declare(strict_types=1);
+
+return [
+    'Do not translate' => 'Do not translate',
+    'Mark as not to translate' => 'Mark as not to translate',
+];

app/application/lang/ru/editor.php

@@ -0,0 +1,6 @@
+<?php declare(strict_types=1);
+
+return [
+    'Do not translate' => 'Не переводить',
+    'Mark as not to translate' => 'Пометить как не переводить',
+];

app/application/resources/views/components/volt/forms/textarea-wysiwyg.blade.php

@@ -95,14 +95,96 @@
                     xhr.send(formData);
                 });
             @endif
+
+            tinymce.PluginManager.add('translateNo', (editor) => {
+                const ATTR = 'translate';
+                const VALUE = 'no';
+
+                const isTranslateNo = (node) =>
+                    node && node.nodeType === 1 && node.getAttribute(ATTR) === VALUE;
+
+                const toggleTranslateNo = () => {
+                    const selectedNode = editor.selection.getNode();
+
+                    if (isTranslateNo(selectedNode)) {
+                        // Remove translate="no", expand span
+                        if (selectedNode.tagName === 'SPAN') {
+                            editor.dom.remove(selectedNode, true); // true = сохранить детей
+                        } else {
+                            editor.dom.setAttrib(selectedNode, ATTR, null);
+                        }
+                        return;
+                    }
+
+                    // If inside translate="no", remove the mark
+                    const wrapper = editor.dom.getParent(selectedNode, `[${ATTR}="${VALUE}"]`);
+                    if (wrapper) {
+                        if (wrapper.tagName === 'SPAN') {
+                            editor.dom.remove(wrapper, true);
+                        } else {
+                            editor.dom.setAttrib(wrapper, ATTR, null);
+                        }
+                        return;
+                    }
+
+                    // Otherwise, wrap the selection
+                    editor.formatter.register('translateNo', {
+                        inline: 'span',
+                        attributes: { [ATTR]: VALUE },
+                        remove: 'all'
+                    });
+                    editor.formatter.apply('translateNo');
+                };
+
+                editor.ui.registry.addToggleButton('translateNo', {
+                    icon: 'translate',
+                    tooltip: '{{ __('editor.Do not translate') }}',
+                    onAction: toggleTranslateNo,
+                    onSetup: (api) => {
+                        const setActive = () => {
+                            const node = editor.selection.getNode();
+                            api.setActive(
+                                isTranslateNo(node) ||
+                                !!editor.dom.getParent(node, `[${ATTR}="${VALUE}"]`)
+                            );
+                        };
+                        editor.on('NodeChange', setActive);
+                        return () => editor.off('NodeChange', setActive);
+                    }
+                });
+
+                editor.ui.registry.addMenuItem('translateNo', {
+                    text: '{{ __('editor.Mark as not to translate') }}',
+                    icon: 'translate',
+                    onAction: toggleTranslateNo
+                });
+            });
+
             tinymce.init({
+                content_style: `
+                    span[translate="no"] {
+                      background: rgba(255, 215, 0, 0.35);
+                      outline: 1px dashed #e0a800;
+                      position: relative;
+                    }
+                    span[translate="no"]:hover::before {
+                        position: absolute;
+                        content: "{{ __('editor.Do not translate') }}";
+                        left: 0;
+                        bottom: 100%;
+                        background: #e0a800;
+                        white-space: nowrap;
+                        padding: 0.25rem;
+                        border: 1px solid #ddd;
+                    }
+              `,
                 selector: '#{{ $tinyId }}',
                 @if(in_array(app()->getLocale(), ['ru'], true))
                     language: '{{ app()->getLocale() }}',
                 @endif
                 license_key: '{{ $tinymceLicenseKey }}',
-                plugins: 'advlist code emoticons link lists table codesample media my-image',
-                toolbar: 'bold italic | bullist numlist | link image emoticons media codesample',
+                plugins: 'advlist code emoticons link lists table codesample media my-image translateNo',
+                toolbar: 'bold italic | bullist numlist | link image emoticons media codesample translateNo',
                 referrer_policy: 'origin',
                 @if($storageUpload !== null)
                     images_upload_handler: imageUpload,