fix: resolve lint errors for v4 release

- Fix duplicate editorContainer declaration in renderer.js
- Add missing browser globals to eslint config (prompt, FileReader, etc.)
- Add global object for Jest test setup
- Replace path.basename with portable string split in logo preview

eslint.config.js

@@ -38,10 +38,30 @@ module.exports = [
         document: 'readonly',
         localStorage: 'readonly',
         alert: 'readonly',
+        prompt: 'readonly',
+        confirm: 'readonly',
         Event: 'readonly',
         CustomEvent: 'readonly',
         HTMLElement: 'readonly',
         MutationObserver: 'readonly',
+        TextEncoder: 'readonly',
+        FileReader: 'readonly',
+        requestAnimationFrame: 'readonly',
+        cancelAnimationFrame: 'readonly',
+        navigator: 'readonly',
+        location: 'readonly',
+        fetch: 'readonly',
+        URL: 'readonly',
+        Blob: 'readonly',
+        Image: 'readonly',
+        DragEvent: 'readonly',
+        ClipboardEvent: 'readonly',
+        KeyboardEvent: 'readonly',
+        MouseEvent: 'readonly',
+        NodeList: 'readonly',
+        HTMLInputElement: 'readonly',
+        HTMLTextAreaElement: 'readonly',
+        getComputedStyle: 'readonly',
         // Electron
         electronAPI: 'readonly',
         // Libraries
@@ -49,6 +69,8 @@ module.exports = [
         DOMPurify: 'readonly',
         hljs: 'readonly',
         mermaid: 'readonly',
+        // Node.js global object
+        global: 'writable',
         // Jest
         jest: 'readonly',
         describe: 'readonly',

src/renderer.js

@@ -1355,11 +1355,11 @@ document.addEventListener('DOMContentLoaded', () => {
     });
 
     // Initialize CodeMirror for the initial tab (tab 1)
-    const editorContainer = document.getElementById('editor-cm-1');
-    if (editorContainer) {
+    const initialEditorContainer = document.getElementById('editor-cm-1');
+    if (initialEditorContainer) {
         const tab = tabManager.tabs.get(1);
         const isDark = document.body.className.includes('dark');
-        tab.editorView = createEditor(editorContainer, {
+        tab.editorView = createEditor(initialEditorContainer, {
             content: tab.content,
             onChange: (newContent) => {
                 tab.content = newContent;
@@ -3218,13 +3218,13 @@ ipcRenderer.on('header-footer-settings-data', (event, settings) => {
 
     // Logo previews
     if (settings.header.logo) {
-        document.getElementById('header-logo-preview').textContent = path.basename(settings.header.logo);
+        document.getElementById('header-logo-preview').textContent = settings.header.logo.split(/[\\/]/).pop();
     } else {
         document.getElementById('header-logo-preview').textContent = '';
     }
 
     if (settings.footer.logo) {
-        document.getElementById('footer-logo-preview').textContent = path.basename(settings.footer.logo);
+        document.getElementById('footer-logo-preview').textContent = settings.footer.logo.split(/[\\/]/).pop();
     } else {
         document.getElementById('footer-logo-preview').textContent = '';
     }