diff --git a/server/corpus-agent/static/index.html b/server/corpus-agent/static/index.html
index 5cc3611..09444f9 100644
--- a/server/corpus-agent/static/index.html
+++ b/server/corpus-agent/static/index.html
@@ -222,7 +222,7 @@ let chatHistory = [];
   document.getElementById('user-badge').textContent = username;
   fetch('/api/auth/quick-login?username=' + encodeURIComponent(u))
     .then(function(r) { return r.json(); })
-    .then(function(d) { if (d.ok) { token = d.token; document.getElementById('app').style.display = 'flex'; updateApiPanel(); loadStats(); loadSamples(); addSystemMsg('✅ 欢迎回来，有什么语料需要整理的？'); } })
+    .then(function(d) { if (d.ok) { token = d.token; localStorage.setItem('corpus_token', token); document.getElementById('app').style.display = 'flex'; updateApiPanel(); loadStats(); loadSamples(); addSystemMsg('✅ 欢迎回来，有什么语料需要整理的？'); } })
     .catch(function() {});
 })();
 
@@ -234,7 +234,7 @@ function doLogout() {
 
 }
 
-// Auto-login
+// 自动恢复：页面刷新后从localStorage恢复session
 if (token) {
   (async () => {
     try {
@@ -242,7 +242,6 @@ if (token) {
       const d = await r.json();
       if (d.ok) {
         username = d.username;
-
         document.getElementById('app').style.display = 'flex';
         document.getElementById('user-badge').textContent = username;
         updateApiPanel();
@@ -250,6 +249,9 @@ if (token) {
         loadSamples();
       } else {
         localStorage.removeItem('corpus_token');
+        // fallback: re-login via homepage
+        var u = localStorage.getItem('current_user');
+        if (u) { window.location.href = '/corpus/'; }
       }
     } catch(e) { localStorage.removeItem('corpus_token'); }
   })();