fix: keep session on frontend load

web/index.html

@@ -648,8 +648,12 @@ createApp({
       else stopTimer();
     });
 
+    // keep session token in localStorage; do not force logout on load
     onMounted(() => {
-      logout();
+      if (localStorage.getItem('t')) {
+        loggedIn.value = true;
+        refreshAll();
+      }
     });
 
     return {