fix: payment/success 同步确认订单（防止异步回调未到）

src/handlers/payment.rs

@@ -852,10 +852,20 @@ fn format_error_html(msg: &str, order_no: &str) -> String {
 }
 
 #[get("/payment/success")]
-pub async fn payment_success(query: web::Query<AlipaySuccessQuery>) -> HttpResponse {
+pub async fn payment_success(
+    pool: web::Data<PgPool>,
+    query: web::Query<AlipaySuccessQuery>,
+) -> HttpResponse {
     let order_no = query.order_no.as_deref().unwrap_or("");
-    let html = build_success_html(order_no);
 
+    // 同步确认订单（幂等：已确认的订单会跳过）
+    if !order_no.is_empty() {
+        if let Err(e) = db::confirm_payment_order_by_orderno(pool.get_ref(), order_no).await {
+            tracing::warn!("支付成功页同步确认失败（可能是异步回调已处理）: {}", e);
+        }
+    }
+
+    let html = build_success_html(order_no);
     HttpResponse::Ok()
         .content_type("text/html; charset=utf-8")
         .body(html)