退出修复

frontend/assets/js/common.js

@@ -145,8 +145,27 @@ function getStatusBadge(status, type = 'homework') {
 }
 
 async function logout() {
-    await apiPost('/api/auth/logout');
+    // 清除 PHP Session
+    try {
+        await fetch('/api/clear_session.php', {
+            method: 'POST',
+            headers: { 'Content-Type': 'application/json' }
+        });
+    } catch (e) {
+        console.warn('清除Session失败', e);
+    }
+    
+    // 清除后端 Token
+    try {
+        await apiPost('/api/auth/logout');
+    } catch (e) {
+        console.warn('后端登出失败', e);
+    }
+    
+    // 清除 localStorage
     clearAuth();
+    
+    // 跳转回登录页
     window.location.href = '/index.php';
 }