fix: 排除已取消的订单在待处理预约查询中

修改SQL查询条件，添加status != '已取消'过滤，确保已取消的订单不会出现在待处理预约列表中

pending_bookings.php

@@ -120,8 +120,8 @@ $booking_schedule = [];
 $bookings_by_date = [];
 
 try {
-    // 获取所有未来的预约
-    $stmt = $pdo->prepare("SELECT * FROM bookings WHERE end_time > NOW() ORDER BY start_time ASC");
+    // 获取所有未来的预约（排除已取消的订单）
+    $stmt = $pdo->prepare("SELECT * FROM bookings WHERE end_time > NOW() AND status != '已取消' ORDER BY start_time ASC");
     $stmt->execute();
     $all_bookings = $stmt->fetchAll();