fix: goPay 加载状态、轮询 5min 超时；成功页已有小程序引导

src/handlers/payment.rs

@@ -382,6 +382,8 @@ pub async fn payment_index() -> Result<HttpResponse, AppError> {
   const API_BASE = '';  // 同源
   let currentShortCode = '';
   let pollTimer = null;
+  let pollRetryCount = 0;
+  const POLL_MAX_RETRIES = 150;  // 2s * 150 = 5min 超时
   let jwt = '';
   let isPaidActive = false;
   let paidExpiresAt = null;
@@ -426,6 +428,15 @@ pub async fn payment_index() -> Result<HttpResponse, AppError> {
 
   async function pollLoginStatus() {
     if (!currentShortCode) return;
+
+    pollRetryCount++;
+    if (pollRetryCount > POLL_MAX_RETRIES) {
+      clearInterval(pollTimer);
+      document.getElementById('scanStatus').textContent = '登录码已过期，请重新获取';
+      document.getElementById('scanStatus').className = 'scan-status waiting';
+      return;
+    }
+
     try {
       const resp = await fetch(API_BASE + '/payment/login-status?code=' + encodeURIComponent(currentShortCode));
       const data = await resp.json();
@@ -503,7 +514,12 @@ pub async fn payment_index() -> Result<HttpResponse, AppError> {
       showError('请先登录');
       return;
     }
-    window.location.href = '/payment/page?package=' + selected + '&jwt=' + encodeURIComponent(jwt);
+    var btn = document.getElementById('payBtn');
+    btn.disabled = true;
+    btn.textContent = '正在跳转...';
+    setTimeout(function() {
+      window.location.href = '/payment/page?package=' + selected + '&jwt=' + encodeURIComponent(jwt);
+    }, 300);
   }
 </script>
 </body>