remember tab added

public/js/main.js

@@ -21,6 +21,7 @@ import {
 let user = null;
 let authToken = null;
 let lastAdminTab = 'overview';
+export { lastAdminTab };
 
 // --- EVENT HANDLERS (The "Logic") ---
 async function handleAuthSubmit(e) {

public/js/ui.js

@@ -7,6 +7,7 @@ import {
     attachAuthFormListener,
     attachAdminDashboardListeners,
     attachEmployeeDashboardListeners,
+    lastAdminTab
 } from './main.js';
 
 // --- DOM ELEMENT SELECTORS ---