feat: add admin auth session expiration handling

Add auth session utilities and event handling in src/lib/auth-session.ts
Integrate auth expiration checks in API request and uploadMediaAsset functions
Update App component to subscribe to auth expired events and update auth state
Add test suite for the auth session utility function
Adjust maintenance grid CSS layout
Remove unused UI components and imports in StructurePage

src/App.tsx

@@ -1,12 +1,17 @@
-import { useState } from "react";
+import { useEffect, useState } from "react";
 
 import { getToken } from "./api";
 import { AdminShell } from "@/components/admin/AdminShell";
+import { subscribeAuthExpired } from "@/lib/auth-session";
 import { LoginPage } from "@/pages/login/LoginPage";
 
 export default function App() {
   const [authed, setAuthed] = useState(!!getToken());
 
+  useEffect(() => {
+    return subscribeAuthExpired(() => setAuthed(false));
+  }, []);
+
   if (!authed) {
     return <LoginPage onDone={() => setAuthed(true)} />;
   }

src/api.ts

@@ -1,3 +1,5 @@
+import { notifyAuthExpired, shouldExpireAdminSession } from "@/lib/auth-session";
+
 export type Dashboard = {
   stats: {
     productCount: number;
@@ -319,6 +321,11 @@ export function clearToken() {
   window.localStorage.removeItem(TOKEN_KEY);
 }
 
+function handleAuthExpired() {
+  clearToken();
+  notifyAuthExpired();
+}
+
 async function request<T>(path: string, options: RequestInit = {}): Promise<T> {
   const headers = new Headers(options.headers);
   headers.set("Content-Type", "application/json");
@@ -331,6 +338,9 @@ async function request<T>(path: string, options: RequestInit = {}): Promise<T> {
   });
 
   if (!response.ok) {
+    if (path !== "/api/admin/auth/login" && shouldExpireAdminSession(response.status, Boolean(token))) {
+      handleAuthExpired();
+    }
     const body = await response.json().catch(() => ({}));
     throw new Error(body.message ?? `请求失败：${response.status}`);
   }
@@ -387,6 +397,9 @@ export async function uploadMediaAsset(file: File, group = "site-config") {
   });
 
   if (!response.ok) {
+    if (shouldExpireAdminSession(response.status, Boolean(token))) {
+      handleAuthExpired();
+    }
     const body = await response.json().catch(() => ({}));
     throw new Error(body.message ?? `请求失败：${response.status}`);
   }

src/lib/auth-session.ts

@@ -0,0 +1,14 @@
+export const AUTH_EXPIRED_EVENT = "wonderq-admin-auth-expired";
+
+export function shouldExpireAdminSession(status: number, hadToken: boolean) {
+  return hadToken && status === 401;
+}
+
+export function notifyAuthExpired() {
+  window.dispatchEvent(new Event(AUTH_EXPIRED_EVENT));
+}
+
+export function subscribeAuthExpired(callback: () => void) {
+  window.addEventListener(AUTH_EXPIRED_EVENT, callback);
+  return () => window.removeEventListener(AUTH_EXPIRED_EVENT, callback);
+}

src/pages/structure/StructurePage.tsx

@@ -3,7 +3,6 @@ import {
   ArrowDown,
   ArrowUp,
   ChevronRight,
-  Eye,
   Plus,
   RefreshCcw,
   Save,
@@ -666,22 +665,8 @@ export function StructurePage({
               </Button>
             ))}
           </aside>
-        ) : (
-          <section className="page-focus-card">
-            <span className="focus-kicker">当前维护页面</span>
-            <h3>{activePage.title}</h3>
-            <p>{activePage.frontPath}</p>
-            <small>{activePage.subtitle}</small>
-          </section>
-        )}
+        ) : null}
         <section className="module-rail">
-          <div className="front-context">
-            <Eye size={18} />
-            <span>
-              <b>{activePage.frontPath}</b>
-              <small>{activePage.subtitle}</small>
-            </span>
-          </div>
           <h3>页面模块</h3>
           {activePage.modules.map((module, index) => (
             <div

src/styles.css

@@ -474,10 +474,7 @@ textarea {
 }
 
 .maintenance-grid.focused-page-grid {
-  grid-template-columns: minmax(190px, 240px) minmax(240px, 300px) minmax(
-      320px,
-      1fr
-    );
+  grid-template-columns: minmax(240px, 300px) minmax(320px, 1fr);
 }
 
 .page-rail,

tests/auth-session.test.ts

@@ -0,0 +1,11 @@
+import assert from "node:assert/strict";
+import test from "node:test";
+
+import { shouldExpireAdminSession } from "../src/lib/auth-session.js";
+
+test("only token-backed 401 responses expire the admin session", () => {
+  assert.equal(shouldExpireAdminSession(401, true), true);
+  assert.equal(shouldExpireAdminSession(401, false), false);
+  assert.equal(shouldExpireAdminSession(403, true), false);
+  assert.equal(shouldExpireAdminSession(500, true), false);
+});