fix: 修复订单 claim 机制状态冲突与 stuck 订单恢复

- 将 OrderStatusClaimed 从 4 改为 6，与 OrderStatusFailed(4) 区分
- releaseClaim 改为返回 error，失败时不再静默吞掉
- claimAndGetOrder 对 status=claimed 返回可重试错误而非静默跳过
- ProcessTask 区分 claimed stuck 错误（触发重试）和其他非 paid 状态（跳过）
- finalizeCouponAndOrder 使用直接 DB 更新 claimed→finished，绕过
  UpdateOrderStatus 的 status<target 守卫（6 > 5 无法通过该条件）
  并显式删除 Redis 缓存避免缓存脏读
- 新增 StuckOrderRecoveryLogic：每 10 分钟扫描超时 claimed 订单，
  重置为 paid 并重新入队激活任务

Co-authored-by: multica-agent <github@multica.ai>

queue/logic/order/stuckOrderRecoveryLogic.go

@@ -0,0 +1,86 @@
+package orderLogic
+
+import (
+	"context"
+	"encoding/json"
+	"time"
+
+	"github.com/hibiken/asynq"
+	"github.com/perfect-panel/server/internal/model/order"
+	"github.com/perfect-panel/server/internal/svc"
+	"github.com/perfect-panel/server/pkg/logger"
+	queueTypes "github.com/perfect-panel/server/queue/types"
+)
+
+const stuckClaimTimeout = 10 * time.Minute
+
+// StuckOrderRecoveryLogic scans orders stuck in claimed(6) status and resets them to paid(2)
+// so that asynq retry can re-claim and process them.
+type StuckOrderRecoveryLogic struct {
+	svc *svc.ServiceContext
+}
+
+func NewStuckOrderRecoveryLogic(svc *svc.ServiceContext) *StuckOrderRecoveryLogic {
+	return &StuckOrderRecoveryLogic{svc: svc}
+}
+
+func (l *StuckOrderRecoveryLogic) ProcessTask(ctx context.Context, _ *asynq.Task) error {
+	cutoff := time.Now().Add(-stuckClaimTimeout)
+
+	var stuckOrders []order.Order
+	if err := l.svc.DB.WithContext(ctx).
+		Model(&order.Order{}).
+		Where("status = ? AND updated_at < ?", OrderStatusClaimed, cutoff).
+		Find(&stuckOrders).Error; err != nil {
+		logger.WithContext(ctx).Error("[StuckOrderRecovery] Failed to query stuck orders",
+			logger.Field("error", err.Error()),
+		)
+		return err
+	}
+
+	if len(stuckOrders) == 0 {
+		return nil
+	}
+
+	orderNos := make([]string, 0, len(stuckOrders))
+	for i := range stuckOrders {
+		orderNos = append(orderNos, stuckOrders[i].OrderNo)
+	}
+
+	logger.WithContext(ctx).Error("[StuckOrderRecovery] Found stuck claimed orders, resetting to paid",
+		logger.Field("count", len(stuckOrders)),
+		logger.Field("order_nos", orderNos),
+	)
+
+	result := l.svc.DB.WithContext(ctx).
+		Model(&order.Order{}).
+		Where("status = ? AND updated_at < ?", OrderStatusClaimed, cutoff).
+		Update("status", OrderStatusPaid)
+	if result.Error != nil {
+		logger.WithContext(ctx).Error("[StuckOrderRecovery] Failed to reset stuck orders",
+			logger.Field("error", result.Error.Error()),
+		)
+		return result.Error
+	}
+
+	for i := range stuckOrders {
+		ord := &stuckOrders[i]
+		payload, err := json.Marshal(queueTypes.ForthwithActivateOrderPayload{OrderNo: ord.OrderNo})
+		if err != nil {
+			logger.WithContext(ctx).Error("[StuckOrderRecovery] Failed to marshal payload",
+				logger.Field("order_no", ord.OrderNo),
+				logger.Field("error", err.Error()),
+			)
+			continue
+		}
+		task := asynq.NewTask(queueTypes.ForthwithActivateOrder, payload, asynq.MaxRetry(5))
+		if _, err := l.svc.Queue.EnqueueContext(ctx, task); err != nil {
+			logger.WithContext(ctx).Error("[StuckOrderRecovery] Failed to re-enqueue order",
+				logger.Field("order_no", ord.OrderNo),
+				logger.Field("error", err.Error()),
+			)
+		}
+	}
+
+	return nil
+}