diff --git a/frontend/js/sync.js b/frontend/js/sync.js
index 9f743f1..33ac33d 100644
--- a/frontend/js/sync.js
+++ b/frontend/js/sync.js
@@ -426,7 +426,7 @@ function initDashboardTabs() {
 // ---------------------------------------------------------------------------
 // Init — called by app.js orchestrator
 // ---------------------------------------------------------------------------
-export { initSyncStatus };
+export { initSyncStatus, initDashboardTabs };
 export function init() {
   registerServiceWorker();
   initDashboardTabs();
diff --git a/frontend/js/viewer.js b/frontend/js/viewer.js
index 15a6ca0..38d9a5f 100644
--- a/frontend/js/viewer.js
+++ b/frontend/js/viewer.js
@@ -5,6 +5,7 @@ import { escapeHtml, safeCreateIcons, safeHighlight, getFileIcon } from './utils
 import { TabManager, closeMobileSidebar, ContextMenuManager, RightSidebarManager, showToast } from './ui.js';
 import { syncActiveFileTreeItem } from './sidebar.js';
 import { AutocompleteDropdown } from './search.js';
+import { initDashboardTabs } from './sync.js';
 // ---------------------------------------------------------------------------
 // Outline/TOC Manager
 // ---------------------------------------------------------------------------