Refactor history and settings UI; improve tab rendering

Moved site and search history management from the main process to the renderer for better performance and reliability. Updated settings UI to use a sidebar tab layout with improved accessibility and responsive design. Refactored tab rendering in the browser to use efficient scheduling and added a robust tab label function. Cleaned up context menu code and improved async file operations for bookmarks and history.

main.js

@@ -99,74 +99,13 @@ function createWindow(startUrl) {
     win.loadURL(url);
   });
 
-  // ensure all embedded <webview> tags also use the same window
+  // ensure all embedded <webview> tags behave predictably without heavy injections
   win.webContents.on('did-attach-webview', (event, webContents) => {
-    // Set up webview with preload script to provide electronAPI - fixed injection
-    webContents.on('dom-ready', () => {
-      // Simpler, more reliable API injection that doesn't require cloning
-      webContents.executeJavaScript(`
-        if (!window.electronAPI) {
-          // Create a simple bridge without complex objects
-          window.electronAPI = {
-            invoke: function(channel) {
-              const args = Array.prototype.slice.call(arguments, 1);
-              return new Promise(function(resolve, reject) {
-                try {
-                  const ipcRenderer = require('electron').ipcRenderer;
-                  ipcRenderer.invoke(channel, ...args).then(resolve).catch(reject);
-                } catch (err) {
-                  reject(err);
-                }
-              });
-            }
-          };
-          console.log('electronAPI injected successfully');
-        }
-      `).catch(err => {
-        console.error('Failed to inject electronAPI:', err);
-        // Fallback: inject minimal API
-        webContents.executeJavaScript(`
-          window.electronAPI = { invoke: function() { return Promise.resolve(); } };
-        `).catch(() => {});
-      });
-    });
-
-    // intercept window.open() inside webview
+    // Let the renderer/webview handle navigation; avoid extra JS injection that can stall
     webContents.setWindowOpenHandler(({ url }) => {
       webContents.loadURL(url);
-      // record history for webview navigations
-      recordHistory('site-history.json', url);
-      const m = /[?&](?:q|query)=([^&]+)/.exec(url);
-      if (m && m[1]) {
-        const query = decodeURIComponent(m[1].replace(/\+/g, ' '));
-        recordHistory('search-history.json', query);
-      }
       return { action: 'deny' };
     });
-    // intercept legacy new-window on webview
-    webContents.on('new-window', (e, url) => {
-      e.preventDefault();
-      webContents.loadURL(url);
-      // record history for webview navigations
-      recordHistory('site-history.json', url);
-      const m = /[?&](?:q|query)=([^&]+)/.exec(url);
-      if (m && m[1]) {
-        const query = decodeURIComponent(m[1].replace(/\+/g, ' '));
-        recordHistory('search-history.json', query);
-      }
-    });
-    // intercept navigation on webview (e.g. user clicks link)
-    webContents.on('will-navigate', (e, url) => {
-      e.preventDefault();
-      webContents.loadURL(url);
-      // record history for webview navigations
-      recordHistory('site-history.json', url);
-      const m = /[?&](?:q|query)=([^&]+)/.exec(url);
-      if (m && m[1]) {
-        const query = decodeURIComponent(m[1].replace(/\+/g, ' '));
-        recordHistory('search-history.json', query);
-      }
-    });
   });
 
   win.loadFile('renderer/index.html');
@@ -189,69 +128,7 @@ function createWindow(startUrl) {
     perfMonitor.trackLoadTime(win.webContents.getURL(), loadTime);
   });
 
-  // Debounced history recording to prevent excessive I/O
-  let historyTimeout;
-  const recordHistory = async (fileName, entry) => {
-    // Clear existing timeout
-    if (historyTimeout) {
-      clearTimeout(historyTimeout);
-    }
-    
-    // Debounce history recording by 500ms
-    historyTimeout = setTimeout(async () => {
-      if (fileName === 'site-history.json') {
-        // Save to both file and send to renderer
-        const filePath = path.join(__dirname, fileName);
-        let data = [];
-        try { 
-          const fileContent = fs.readFileSync(filePath, 'utf8');
-          data = JSON.parse(fileContent); 
-        } catch {}
-        
-        if (data[0] !== entry) {
-          data.unshift(entry);
-          if (data.length > 100) data.pop();
-          
-          // Use async file operations to prevent blocking
-          try {
-            await fs.promises.writeFile(filePath, JSON.stringify(data, null, 2));
-          } catch (err) {
-            console.error('Error writing site history:', err);
-          }
-        }
-        // Also send to renderer for localStorage
-        win.webContents.send('record-site-history', entry);
-      } else {
-        // Keep search history in JSON file for now
-        const filePath = path.join(__dirname, fileName);
-        let data = [];
-        try { 
-          const fileContent = fs.readFileSync(filePath, 'utf8');
-          data = JSON.parse(fileContent); 
-        } catch {}
-        
-        if (data[0] !== entry) {
-          data.unshift(entry);
-          if (data.length > 100) data.pop();
-          
-          try {
-            await fs.promises.writeFile(filePath, JSON.stringify(data, null, 2));
-          } catch (err) {
-            console.error('Error writing search history:', err);
-          }
-        }
-      }
-    }, 500);
-  };
-
-  win.webContents.on('did-navigate', (event, url) => {
-    recordHistory('site-history.json', url);
-    const m = /[?&](?:q|query)=([^&]+)/.exec(url);
-    if (m && m[1]) {
-      const query = decodeURIComponent(m[1].replace(/\+/g, ' '));
-      recordHistory('search-history.json', query);
-    }
-  });
+  // Renderer manages history; no main-process recording here
 }
 
 // This method will be called when Electron has finished initialization
@@ -350,10 +227,9 @@ ipcMain.handle('window-close', event => {
 // Site history is now handled via localStorage in the renderer
 // But keep these handlers for compatibility and potential future use
 ipcMain.handle('load-site-history', async () => {
-  // Read from the site history file for settings page
   const filePath = path.join(__dirname, 'site-history.json');
   try {
-    const data = fs.readFileSync(filePath, 'utf-8');
+    const data = await fs.promises.readFile(filePath, 'utf-8');
     return JSON.parse(data);
   } catch (err) {
     return [];
@@ -361,10 +237,9 @@ ipcMain.handle('load-site-history', async () => {
 });
 
 ipcMain.handle('save-site-history', async (event, history) => {
-  // Save to both file and localStorage
   const filePath = path.join(__dirname, 'site-history.json');
   try {
-    fs.writeFileSync(filePath, JSON.stringify(history, null, 2));
+    await fs.promises.writeFile(filePath, JSON.stringify(history, null, 2));
     return true;
   } catch (err) {
     return false;
@@ -374,7 +249,7 @@ ipcMain.handle('save-site-history', async (event, history) => {
 ipcMain.handle('clear-site-history', async () => {
   const filePath = path.join(__dirname, 'site-history.json');
   try {
-    fs.writeFileSync(filePath, JSON.stringify([], null, 2));
+    await fs.promises.writeFile(filePath, JSON.stringify([], null, 2));
     return true;
   } catch (err) {
     return false;
@@ -384,7 +259,7 @@ ipcMain.handle('clear-site-history', async () => {
 ipcMain.handle('load-search-history', async () => {
   const filePath = path.join(__dirname, 'search-history.json');
   try {
-    const data = fs.readFileSync(filePath, 'utf-8');
+    const data = await fs.promises.readFile(filePath, 'utf-8');
     return JSON.parse(data);
   } catch (err) {
     return [];
@@ -394,7 +269,7 @@ ipcMain.handle('load-search-history', async () => {
 ipcMain.handle('save-search-history', async (event, history) => {
   const filePath = path.join(__dirname, 'search-history.json');
   try {
-    fs.writeFileSync(filePath, JSON.stringify(history, null, 2));
+    await fs.promises.writeFile(filePath, JSON.stringify(history, null, 2));
     return true;
   } catch (err) {
     return false;
@@ -410,24 +285,24 @@ ipcMain.on('homepage-changed', (event, url) => {
 ipcMain.handle('load-bookmarks', async () => {
   try {
     const bookmarksPath = path.join(__dirname, 'bookmarks.json');
-    if (fs.existsSync(bookmarksPath)) {
-      const data = fs.readFileSync(bookmarksPath, 'utf8');
-      const bookmarks = JSON.parse(data);
-      console.log(`Loaded ${bookmarks.length} bookmarks from file`);
-      return bookmarks;
+    try {
+      await fs.promises.access(bookmarksPath);
+    } catch {
+      console.log('No bookmarks file found, starting with empty array');
+      return [];
     }
-    console.log('No bookmarks file found, starting with empty array');
-    return [];
+    const data = await fs.promises.readFile(bookmarksPath, 'utf8');
+    const bookmarks = JSON.parse(data);
+    console.log(`Loaded ${bookmarks.length} bookmarks from file`);
+    return bookmarks;
   } catch (error) {
     console.error('Error loading bookmarks:', error);
     // Try to create a backup if the file is corrupted
     const bookmarksPath = path.join(__dirname, 'bookmarks.json');
     const backupPath = path.join(__dirname, `bookmarks.backup.${Date.now()}.json`);
     try {
-      if (fs.existsSync(bookmarksPath)) {
-        fs.copyFileSync(bookmarksPath, backupPath);
-        console.log(`Corrupted bookmarks file backed up to: ${backupPath}`);
-      }
+      await fs.promises.copyFile(bookmarksPath, backupPath);
+      console.log(`Corrupted bookmarks file backed up to: ${backupPath}`);
     } catch (backupError) {
       console.error('Failed to create backup:', backupError);
     }
@@ -438,14 +313,12 @@ ipcMain.handle('load-bookmarks', async () => {
 ipcMain.handle('save-bookmarks', async (event, bookmarks) => {
   try {
     const bookmarksPath = path.join(__dirname, 'bookmarks.json');
-    
-    // Create a backup before saving
-    if (fs.existsSync(bookmarksPath)) {
+    try {
+      await fs.promises.access(bookmarksPath);
       const backupPath = path.join(__dirname, 'bookmarks.backup.json');
-      fs.copyFileSync(bookmarksPath, backupPath);
-    }
-    
-    fs.writeFileSync(bookmarksPath, JSON.stringify(bookmarks, null, 2));
+      await fs.promises.copyFile(bookmarksPath, backupPath);
+    } catch {}
+    await fs.promises.writeFile(bookmarksPath, JSON.stringify(bookmarks, null, 2));
     console.log(`Saved ${bookmarks.length} bookmarks to file`);
     return true;
   } catch (error) {
@@ -515,20 +388,15 @@ ipcMain.handle('save-site-history-entry', async (event, url) => {
   try {
     let data = [];
     try {
-      data = JSON.parse(fs.readFileSync(filePath, 'utf8')); 
+      const raw = await fs.promises.readFile(filePath, 'utf8');
+      data = JSON.parse(raw);
     } catch {}
-    
     // Remove if already exists to avoid duplicates
     data = data.filter(item => item !== url);
-    // Add to beginning
+    // Add to beginning and clamp size
     data.unshift(url);
-    // Keep only last 100 entries
-    if (data.length > 100) {
-      data = data.slice(0, 100);
-    }
-    
-    fs.writeFileSync(filePath, JSON.stringify(data, null, 2));
-    console.log('[MAIN] Saved site history entry:', url);
+    if (data.length > 100) data = data.slice(0, 100);
+    await fs.promises.writeFile(filePath, JSON.stringify(data, null, 2));
     return true;
   } catch (err) {
     console.error('[MAIN] Error saving site history entry:', err);

renderer/script.js

@@ -53,6 +53,30 @@ let activeTabId = null;
 const allowedInternalPages = ['settings', 'home'];
 let bookmarks = [];
 
+// Efficient render scheduling to avoid redundant DOM work
+let tabsRenderPending = false;
+function scheduleRenderTabs() {
+  if (tabsRenderPending) return;
+  tabsRenderPending = true;
+  requestAnimationFrame(() => {
+    tabsRenderPending = false;
+    renderTabs();
+  });
+}
+
+// Derive a stable, safe label for a tab without throwing on non-URLs
+function getTabLabel(tab) {
+  if (tab.title && tab.title !== 'New Tab') return tab.title;
+  const u = tab.url || '';
+  try {
+    if (u.startsWith('http')) return new URL(u).hostname;
+    if (u.startsWith('browser://')) return u.replace('browser://', '');
+    return u || 'New Tab';
+  } catch {
+    return u || 'New Tab';
+  }
+}
+
 // Load bookmarks on startup
 async function loadBookmarks() {
   try {
@@ -107,9 +131,9 @@ function createTab(inputUrl) {
         isHome: true
     };
     tabs.push(tab);
-    setActiveTab(id);
-    // Render the tab bar so the new home tab appears
-    renderTabs();
+  setActiveTab(id);
+  // Render the tab bar so the new home tab appears
+  scheduleRenderTabs();
     return id;
   }
   
@@ -208,7 +232,7 @@ function createTab(inputUrl) {
   });
 
   setActiveTab(id);
-  renderTabs();
+  scheduleRenderTabs();
 }
 
 
@@ -236,7 +260,7 @@ function updateTabMetadata(id, key, value) {
   const tab = tabs.find(t => t.id === id);
   if (tab) {
     tab[key] = value;
-    renderTabs();
+  scheduleRenderTabs();
   }
 }
 
@@ -276,7 +300,7 @@ function navigate() {
   tab.url = input; 
   webview.src = resolved;
 
-  renderTabs();
+  scheduleRenderTabs();
   updateNavButtons();
 }
 
@@ -363,7 +387,7 @@ function convertHomeTabToWebview(tabId, inputUrl, resolvedUrl) {
   updateNavButtons();
   // Activate converted webview tab and update UI
   setActiveTab(tabId);
-  renderTabs();
+  scheduleRenderTabs();
 }
 
 function handleNavigation(tabId, newUrl) {
@@ -406,7 +430,7 @@ function handleNavigation(tabId, newUrl) {
     urlBox.value = displayUrl === 'browser://home' ? '' : displayUrl;
   }
 
-  renderTabs();
+  scheduleRenderTabs();
   updateNavButtons();
 }
 
@@ -439,7 +463,7 @@ function setActiveTab(id) {
   if (tab) {
     // If the tab URL represents the home page, keep the URL bar blank.
     urlBox.value = tab.url === 'browser://home' ? '' : tab.url;
-    renderTabs();
+  scheduleRenderTabs();
     updateNavButtons();
     updateZoomUI();            // ← update zoom display for new active tab
   }
@@ -455,7 +479,7 @@ function closeTab(id) {
     if (tabs.length > 0) setActiveTab(tabs[0].id);
   }
 
-  renderTabs();
+  scheduleRenderTabs();
   updateNavButtons();
 }
 
@@ -475,7 +499,7 @@ function renderTabs() {
       el.appendChild(icon);
     }
 
-    el.appendChild(document.createTextNode(tab.title || new URL(tab.url).hostname));
+  el.appendChild(document.createTextNode(getTabLabel(tab)));
 
     const closeBtn = document.createElement('button');
     closeBtn.textContent = '×';
@@ -572,17 +596,7 @@ menuBtn.addEventListener('click', () => {
 });
 
 window.addEventListener('DOMContentLoaded', () => {
-  // Add some debug info
-  console.log('[DEBUG] Site history initialized, current entries:', getSiteHistory().length);
-  
-  // Add test entries if none exist (for debugging)
-  if (getSiteHistory().length === 0) {
-    console.log('[DEBUG] No existing history, adding test entries for debugging');
-    addToSiteHistory('https://www.google.com');
-    addToSiteHistory('https://github.com');
-    console.log('[DEBUG] Test entries added, history now:', getSiteHistory());
-  }
-  
+  // Initial boot
   createTab();
   // Handle IPC messages from the static home webview (bookmarks navigation)
   const staticHome = document.getElementById('home-webview');
@@ -651,65 +665,7 @@ window.addEventListener('DOMContentLoaded', () => {
     document.getElementById('zoom-percent').textContent = `${Math.round(z * 100)}%`;
   });
 
-  // menu‐related code (moved here so #context-menu exists)
-  const items = contextMenu ? contextMenu.querySelectorAll('li') : [];
-
-  function showContextMenu(x, y) {
-    if (!menu) return;
-    menu.style.top = `${y}px`;
-    menu.style.left = `${x}px`;
-    menu.classList.add('visible');
-  }
-
-  document.addEventListener('contextmenu', e => {
-    if (e.target.tagName === 'WEBVIEW' ||
-        e.composedPath().some(el => el.id === 'webviews')) {
-      e.preventDefault();
-      showContextMenu(e.clientX, e.clientY);
-    }
-  });
-
-  document.addEventListener('click', () => {
-    if (menu) menu.classList.remove('visible');
-  });
-
-  items.forEach(item => {
-    item.addEventListener('click', async () => {
-      const action = item.dataset.action;
-      const win = remote.getCurrentWindow();
-
-      switch (action) {
-        case 'save-page': {
-          const { canceled, filePath } = await remote.dialog.showSaveDialog(win, { defaultPath: 'page.html' });
-          if (!canceled && filePath) win.webContents.savePage(filePath, 'HTMLComplete');
-          break;
-        }
-        case 'select-all':
-          document.execCommand('selectAll');
-          break;
-        case 'screenshot': {
-          const image = await win.webContents.capturePage();
-          const { canceled, filePath } = await remote.dialog.showSaveDialog(win, { defaultPath: 'screenshot.png' });
-          if (!canceled && filePath) fs.writeFileSync(filePath, image.toPNG());
-          break;
-        }
-        case 'view-source': {
-          const html = document.documentElement.outerHTML;
-          const { canceled, filePath } = await remote.dialog.showSaveDialog(win, { defaultPath: 'source.html' });
-          if (!canceled && filePath) fs.writeFileSync(filePath, html);
-          break;
-        }
-        case 'inspect-accessibility':
-          win.webContents.inspectAccessibilityNode(e.clientX, e.clientY);
-          break;
-        case 'inspect-element':
-          win.webContents.inspectElement(e.clientX, e.clientY);
-          break;
-      }
-
-      menu.classList.remove('visible');
-    });
-  });
+  // (Removed broken duplicate context menu wiring)
 
   // Migrate existing site history from JSON file to localStorage (one-time migration)
   const migrateSiteHistory = async () => {

renderer/settings.css

@@ -29,11 +29,73 @@ body {
 
 .container {
   background-color: var(--dark-purple);
-  padding: 2rem;
+  padding: 0;
   border-radius: 16px;
   box-shadow: 0 0 10px rgba(0,0,0,0.5);
-  max-width: 500px;
+  max-width: 1100px;
   width: 100%;
+  display: flex;
+  overflow: hidden;
+}
+
+/* Sidebar + content layout */
+.sidebar {
+  width: 260px;
+  background: rgba(0,0,0,0.2);
+  border-right: 1px solid rgba(255,255,255,0.08);
+  padding: 1.25rem 1rem;
+}
+
+.sidebar h1 {
+  font-size: 1.2rem;
+  margin: 0 0 1rem 0;
+  color: var(--primary);
+}
+
+.tabs {
+  display: flex;
+  flex-direction: column;
+  gap: 4px;
+}
+
+.tab-link {
+  text-align: left;
+  background: transparent;
+  color: var(--text);
+  border: none;
+  border-radius: 8px;
+  padding: 10px 12px;
+  cursor: pointer;
+  transition: background 0.15s ease, color 0.15s ease;
+  font-size: 14px;
+  font-family: inherit;
+  width: 100%;
+  position: relative;
+  z-index: 1;
+}
+
+.tab-link:hover {
+  background: rgba(255,255,255,0.06);
+}
+
+.tab-link.active {
+  background: rgba(123, 46, 255, 0.18);
+  color: #fff;
+  border: 1px solid rgba(123,46,255,0.35);
+}
+
+.content {
+  flex: 1;
+  padding: 1.25rem 1.5rem 2rem 1.5rem;
+  overflow: auto;
+}
+
+.tab-panel {
+  display: none;
+}
+
+.tab-panel.active {
+  display: block;
 }
 
 h1 {
@@ -132,10 +194,20 @@ button:hover {
 /* small-screen adjustments */
 @media (max-width: 480px) {
   .container {
-    padding: 1rem;
-    border-radius: 0;
-    box-shadow: none;
+    padding: 0;
+    border-radius: 12px;
+    box-shadow: 0 0 8px rgba(0,0,0,0.35);
+    flex-direction: column;
+    max-width: 100%;
   }
+  .sidebar {
+    width: 100%;
+    border-right: none;
+    border-bottom: 1px solid rgba(255,255,255,0.08);
+    padding-bottom: 0.5rem;
+  }
+  .tabs { flex-direction: row; flex-wrap: wrap; gap: 6px; }
+  .tab-link { flex: 1 1 auto; }
   h1 {
     font-size: 1.25rem;
   }

renderer/settings.html

@@ -240,25 +240,35 @@
   </style>
 </head>
 <body>
-  <div class="container">
-    <h1>⚙️ Browser Settings</h1>
+  <div class="container" role="application">
+    <aside class="sidebar" aria-label="Settings categories">
+      <h1>⚙️ Settings</h1>
+      <nav class="tabs" role="tablist">
+        <button class="tab-link active" role="tab" aria-selected="true" aria-controls="panel-general" id="tab-general" data-tab="general">General</button>
+        <button class="tab-link" role="tab" aria-selected="false" aria-controls="panel-appearance" id="tab-appearance" data-tab="appearance">Appearance</button>
+        <button class="tab-link" role="tab" aria-selected="false" aria-controls="panel-history" id="tab-history" data-tab="history">History</button>
+        <button class="tab-link" role="tab" aria-selected="false" aria-controls="panel-about" id="tab-about" data-tab="about">About</button>
+      </nav>
+    </aside>
 
-    <div class="setting-group">
-      <label for="clear-data-btn">Clear All Cookies &amp; Data</label>
-      <button id="clear-data-btn">Clear Data</button>
-    </div>
+    <main class="content">
+      <!-- General Panel -->
+      <section class="tab-panel active" id="panel-general" role="tabpanel" aria-labelledby="tab-general">
+        <h2>General</h2>
+        <div class="setting-group">
+          <label for="clear-data-btn">Clear All Cookies &amp; Data</label>
+          <button id="clear-data-btn">Clear Data</button>
+        </div>
+        <p class="note">Settings are stored locally on this device.</p>
+        <div class="debug-info" id="debug-info">Loading debug info...</div>
+      </section>
 
-    <p class="note">Settings are stored locally on this device.</p>
-
-    <div class="debug-info" id="debug-info">Loading debug info...</div>
-
-    <!-- Customization Section -->
-    <section>
-      <h2>🎨 Browser Customization</h2>
-      
-      <!-- Theme Selection -->
-      <div class="customization-group">
-        <h3>Theme Presets</h3>
+      <!-- Appearance Panel -->
+      <section class="tab-panel" id="panel-appearance" role="tabpanel" aria-labelledby="tab-appearance">
+        <h2>🎨 Appearance</h2>
+        <!-- Theme Selection -->
+        <div class="customization-group">
+          <h3>Theme Presets</h3>
         <div class="theme-selector">
           <button id="theme-default" class="theme-btn" data-theme="default">
             <div class="theme-preview" style="background: linear-gradient(145deg, #121418, #1B1035);"></div>
@@ -313,11 +323,11 @@
             <span>Custom</span>
           </button>
         </div>
-      </div>
+        </div>
 
-      <!-- Color Customization -->
-      <div class="customization-group">
-        <h3>Custom Colors</h3>
+        <!-- Color Customization -->
+        <div class="customization-group">
+          <h3>Custom Colors</h3>
         <div class="color-controls">
           <div class="color-group">
             <label for="bg-color">Background:</label>
@@ -340,11 +350,11 @@
             <input type="color" id="text-color" value="#E0E0E0">
           </div>
         </div>
-      </div>
+        </div>
 
-      <!-- Home Page Layout -->
-      <div class="customization-group">
-        <h3>Home Page Layout</h3>
+        <!-- Home Page Layout -->
+        <div class="customization-group">
+          <h3>Home Page Layout</h3>
         <div class="layout-options">
           <label>
             <input type="radio" name="layout" value="centered" checked>
@@ -359,11 +369,11 @@
             <span>Compact View</span>
           </label>
         </div>
-      </div>
+        </div>
 
-      <!-- Logo Customization -->
-      <div class="customization-group">
-        <h3>Logo & Branding</h3>
+        <!-- Logo Customization -->
+        <div class="customization-group">
+          <h3>Logo & Branding</h3>
         <div class="logo-options">
           <label for="show-logo">
             <input type="checkbox" id="show-logo" checked>
@@ -374,11 +384,11 @@
             <input type="text" id="custom-title" placeholder="Nebula Browser" maxlength="50">
           </label>
         </div>
-      </div>
+        </div>
 
-      <!-- Theme Management -->
-      <div class="customization-group">
-        <h3>Theme Management</h3>
+        <!-- Theme Management -->
+        <div class="customization-group">
+          <h3>Theme Management</h3>
         <div class="theme-management">
           <button id="save-custom-theme">Save Current as Custom Theme</button>
           <button id="export-theme">Export Theme</button>
@@ -386,11 +396,11 @@
           <input type="file" id="theme-file-input" accept=".json" style="display: none;">
           <button id="reset-to-default">Reset to Default</button>
         </div>
-      </div>
+        </div>
 
-      <!-- Live Preview -->
-      <div class="customization-group">
-        <h3>Preview</h3>
+        <!-- Live Preview -->
+        <div class="customization-group">
+          <h3>Preview</h3>
         <div class="preview-container" id="preview-container">
           <div class="preview-home">
             <div class="preview-logo" id="preview-logo">../assets/images/Logos/Nebula-Logo.svg</div>
@@ -403,21 +413,34 @@
             </div>
           </div>
         </div>
-      </div>
-    </section>
+        </div>
+      </section>
 
-    <!-- add history views -->
-    <section>
-      <h2>Search History</h2>
-      <ul id="search-history-list"></ul>
-      <button id="clear-search-history-btn" style="margin-top: 10px;">Clear Search History</button>
-    </section>
-    <section>
-      <h2>Site History</h2>
-      <ul id="site-history-list"></ul>
-      <button id="clear-site-history-btn" style="margin-top: 10px;">Clear Site History</button>
-      <button id="add-test-history-btn" style="margin-top: 10px; margin-left: 10px;">Add Test History</button>
-    </section>
+      <!-- History Panel -->
+      <section class="tab-panel" id="panel-history" role="tabpanel" aria-labelledby="tab-history">
+        <h2>History</h2>
+        <div class="customization-group">
+          <h3>Search History</h3>
+          <ul id="search-history-list"></ul>
+          <button id="clear-search-history-btn" style="margin-top: 10px;">Clear Search History</button>
+        </div>
+        <div class="customization-group">
+          <h3>Site History</h3>
+          <ul id="site-history-list"></ul>
+          <div style="display:flex; gap:10px; margin-top:10px; flex-wrap:wrap;">
+            <button id="clear-site-history-btn">Clear Site History</button>
+            <button id="add-test-history-btn">Add Test History</button>
+          </div>
+        </div>
+      </section>
+
+      <!-- About Panel -->
+      <section class="tab-panel" id="panel-about" role="tabpanel" aria-labelledby="tab-about">
+        <h2>About</h2>
+        <p class="note">Nebula Browser Experimental Settings</p>
+        <p class="note">Version info and links can go here.</p>
+      </section>
+    </main>
   </div>
 
   <!-- status overlay moved outside of .container -->

renderer/settings.js

@@ -1,10 +1,30 @@
-// Use require('electron') since webviews have nodeIntegrationInSubFrames: true
-// In settings webview we use the same preload API as main windows
-const { ipcRenderer } = require('electron');
+// Try to get ipcRenderer, but don't fail if it's not available
+let ipcRenderer = null;
+try {
+  if (typeof require !== 'undefined') {
+    const electron = require('electron');
+    ipcRenderer = electron.ipcRenderer;
+  }
+} catch (e) {
+  console.log('[SETTINGS] Electron IPC not available, some features may be limited');
+}
 
-const clearBtn = document.getElementById('clear-data-btn');
+let clearBtn = document.getElementById('clear-data-btn');
 const statusDiv = document.getElementById('status');
 const statusText = document.getElementById('status-text');
+const TAB_STORAGE_KEY = 'nebula-settings-active-tab';
+
+function showStatus(message) {
+  if (statusText && statusDiv) {
+    statusText.textContent = message;
+    statusDiv.classList.remove('hidden');
+    setTimeout(() => {
+      statusDiv.classList.add('hidden');
+    }, 2000);
+  } else {
+    console.log('[STATUS]', message);
+  }
+}
 
 function showStatus(message) {
   statusText.textContent = message;
@@ -14,23 +34,118 @@ function showStatus(message) {
   }, 2000);
 }
 
-clearBtn.onclick = async () => {
-  statusDiv.classList.remove('hidden');
-  statusText.textContent = 'Clearing all browser data...';
-
-  try {
-    const ok = await ipcRenderer.invoke('clear-browser-data');
-    showStatus(ok
-      ? 'All browser data and bookmarks cleared!'
-      : 'Failed to clear browser data.');
-  } catch (error) {
-    console.error('Error clearing browser data:', error);
-    showStatus('An error occurred while clearing data.');
-  } finally {
-    // Send theme update to host after clearing
-    const currentTheme = window.browserCustomizer ? window.browserCustomizer.currentTheme : null;
-    if (currentTheme && window.electronAPI && typeof window.electronAPI.sendToHost === 'function') {
-      window.electronAPI.sendToHost('theme-update', currentTheme);
+function attachClearHandler(btn) {
+  if (!btn) return;
+  btn.onclick = async () => {
+    if (statusDiv && statusText) {
+      statusDiv.classList.remove('hidden');
+      statusText.textContent = 'Clearing all browser data...';
     }
+
+    try {
+      if (ipcRenderer) {
+        const ok = await ipcRenderer.invoke('clear-browser-data');
+        showStatus(ok
+          ? 'All browser data and bookmarks cleared!'
+          : 'Failed to clear browser data.');
+      } else {
+        showStatus('Clear data feature not available in this context.');
+      }
+    } catch (error) {
+      console.error('Error clearing browser data:', error);
+      showStatus('An error occurred while clearing data.');
+    } finally {
+      const currentTheme = window.browserCustomizer ? window.browserCustomizer.currentTheme : null;
+      if (currentTheme && window.electronAPI && typeof window.electronAPI.sendToHost === 'function') {
+        window.electronAPI.sendToHost('theme-update', currentTheme);
+      }
+    }
+  };
+}
+
+// Try attaching immediately, and again on DOMContentLoaded
+attachClearHandler(clearBtn);
+window.addEventListener('DOMContentLoaded', () => {
+  if (!clearBtn) {
+    clearBtn = document.getElementById('clear-data-btn');
+    attachClearHandler(clearBtn);
   }
-};
+});
+
+// Tabs: simple controller
+function activateTab(tabName) {
+  console.log('[TABS] Activating tab:', tabName);
+  const links = document.querySelectorAll('.tab-link');
+  const panels = document.querySelectorAll('.tab-panel');
+  console.log('[TABS] Found', links.length, 'tab links and', panels.length, 'panels');
+  
+  links.forEach(l => {
+    const isActive = l.dataset.tab === tabName;
+    l.classList.toggle('active', isActive);
+    l.setAttribute('aria-selected', isActive ? 'true' : 'false');
+    if (isActive) l.focus({ preventScroll: true });
+  });
+  panels.forEach(p => {
+    const isActive = p.id === `panel-${tabName}`;
+    p.classList.toggle('active', isActive);
+    p.hidden = !isActive;
+    console.log('[TABS] Panel', p.id, 'active:', isActive);
+  });
+  try { localStorage.setItem(TAB_STORAGE_KEY, tabName); } catch {}
+}
+
+function initTabs() {
+  console.log('[TABS] Initializing tabs...');
+  const links = document.querySelectorAll('.tab-link');
+  console.log('[TABS] Found tab links:', links.length);
+  
+  // Direct listeners (for accessibility focus handling)
+  links.forEach((link, index) => {
+    console.log('[TABS] Setting up listener for tab', index, 'with data-tab:', link.dataset.tab);
+    link.addEventListener('click', (e) => {
+      console.log('[TABS] Tab clicked:', link.dataset.tab);
+      e.preventDefault();
+      e.stopPropagation();
+      const name = link.dataset.tab;
+      if (!name) return;
+      if (location.hash !== `#${name}`) {
+        history.replaceState(null, '', `#${name}`);
+      }
+      activateTab(name);
+    });
+  });
+  
+  // Delegation as a fallback if elements are re-rendered
+  const tabContainer = document.querySelector('.tabs');
+  if (tabContainer) {
+    console.log('[TABS] Setting up delegation on tabs container');
+    tabContainer.addEventListener('click', (e) => {
+      console.log('[TABS] Container click detected');
+      const btn = e.target && e.target.closest ? e.target.closest('.tab-link') : null;
+      if (!btn || !tabContainer.contains(btn)) return;
+      console.log('[TABS] Delegated click for tab:', btn.dataset.tab);
+      const name = btn.dataset.tab;
+      if (!name) return;
+      if (location.hash !== `#${name}`) {
+        history.replaceState(null, '', `#${name}`);
+      }
+      activateTab(name);
+    });
+  }
+
+  // Resolve initial tab: hash > storage > default 'general'
+  let initial = (location.hash || '').replace('#', '') || null;
+  if (!initial) {
+    try { initial = localStorage.getItem(TAB_STORAGE_KEY) || null; } catch {}
+  }
+  if (!initial) initial = 'general';
+  console.log('[TABS] Initial tab:', initial);
+  activateTab(initial);
+}
+
+// Initialize tabs after DOM is ready but before customization init uses the DOM
+window.addEventListener('DOMContentLoaded', () => {
+  console.log('[TABS] DOM loaded, initializing tabs...');
+  initTabs();
+  console.log('[TABS] Tabs initialized');
+});

site-history.json

@@ -1,2 +1,3 @@
 [
+  "https://www.youtube.com/"
 ]