优化后台界面与无操作退出体验

frontend/src/views/Login.test.ts

@@ -74,4 +74,17 @@ describe("Login protocol agreement", () => {
     expect(restoreIndex).toBeLessThan(projectOverviewRouteIndex);
     expect(source).toContain("preferActive: !!auth.user?.is_admin");
   });
+
+  it("shows persistent logout reason notices on the login card", () => {
+    const source = readLoginView();
+
+    expect(source).toContain('v-if="logoutNotice"');
+    expect(source).toContain("LOGOUT_REASON_TIMEOUT");
+    expect(source).toContain("LOGOUT_REASON_AUTH_EXPIRED");
+    expect(source).toContain("LOGOUT_REASON_MANUAL");
+    expect(source).toContain("30 分钟未检测到任何操作。为保护项目数据，请重新登录后继续。");
+    expect(source).toContain("登录状态已失效");
+    expect(source).toContain("已安全退出");
+    expect(source).toContain(".logout-notice");
+  });
 });