diff --git a/hub/filelib-web/src/routes/database/dashboard/+layout.svelte b/hub/filelib-web/src/routes/database/dashboard/+layout.svelte
index 655f099..a6f84e6 100644
--- a/hub/filelib-web/src/routes/database/dashboard/+layout.svelte
+++ b/hub/filelib-web/src/routes/database/dashboard/+layout.svelte
@@ -28,9 +28,18 @@
 
   const BASE = "/database/dashboard";
 
-  onMount(async () => {
-    await loadSession();
-    if ($me === null) void goto("/database/admin", { replaceState: true });
+  onMount(loadSession);
+
+  /**
+   * 未登录一律回登录页 —— 必须是 effect 而非 onMount 里的一次性判断:
+   * `logout()` 只清 store(它被老师端 /app 共用,那边 me=null 是终态而非跳转),
+   * 退出后这层壳会重新渲染成 me===null,若跳转只写在 onMount 就永远停在
+   * "跳转到登录页…"。
+   */
+  $effect(() => {
+    if ($authChecked && $me === null) {
+      void goto("/database/admin", { replaceState: true });
+    }
   });
 
   function href(seg: string): string {