feat(w5): ship v2.0.0 platform sync, undo persistence, and updates

Co-authored-by: Cursor <cursoragent@cursor.com>

src/renderer/components/settings/SettingsPage.tsx

@@ -6,6 +6,8 @@ import { ShortcutEditor } from '@renderer/components/settings/ShortcutEditor'
 import { AiSettingsPage } from '@renderer/components/settings/AiSettingsPage'
 import { TemplateSettingsTab } from '@renderer/components/settings/TemplateSettingsTab'
 import { BackupSettingsTab } from '@renderer/components/settings/BackupSettingsTab'
+import { SyncSettingsTab } from '@renderer/components/settings/SyncSettingsTab'
+import { ExtensionsSettingsTab } from '@renderer/components/settings/ExtensionsSettingsTab'
 import { SubmissionPresetTab } from '@renderer/components/settings/SubmissionPresetTab'
 
 const THEMES: { id: ThemeId; key: string }[] = [
@@ -22,7 +24,7 @@ export function SettingsPage(): React.JSX.Element {
   const { t } = useTranslation()
   const settings = useSettingsStore()
   const [section, setSection] = useState<
-    'general' | 'ai' | 'templates' | 'submission' | 'backup' | 'shortcuts' | 'about'
+    'general' | 'ai' | 'templates' | 'submission' | 'backup' | 'extensions' | 'shortcuts' | 'about'
   >('general')
 
   return (
@@ -72,6 +74,15 @@ export function SettingsPage(): React.JSX.Element {
         >
           {t('settings.backup')}
         </div>
+        <div
+          className={`settings-nav-item ${section === 'extensions' ? 'active' : ''}`}
+          onClick={() => setSection('extensions')}
+          role="button"
+          tabIndex={0}
+          data-testid="settings-nav-extensions"
+        >
+          {t('settings.extensions')}
+        </div>
         <div
           className={`settings-nav-item ${section === 'shortcuts' ? 'active' : ''}`}
           onClick={() => setSection('shortcuts')}
@@ -305,11 +316,18 @@ export function SettingsPage(): React.JSX.Element {
         {section === 'ai' && <AiSettingsPage />}
         {section === 'templates' && <TemplateSettingsTab />}
         {section === 'submission' && <SubmissionPresetTab />}
-        {section === 'backup' && <BackupSettingsTab />}
+        {section === 'backup' && (
+          <>
+            <BackupSettingsTab />
+            <hr style={{ margin: '24px 0', borderColor: 'var(--border-color)' }} />
+            <SyncSettingsTab />
+          </>
+        )}
+        {section === 'extensions' && <ExtensionsSettingsTab />}
         {section === 'shortcuts' && <ShortcutEditor />}
         {section === 'about' && (
           <p style={{ color: 'var(--text-secondary)', lineHeight: 1.8 }}>
-            {t('app.name')} v1.5.0
+            {t('app.name')} v2.0.0
             <br />
             {t('app.tagline')}
           </p>