chore: stabilize lint and verify builds

backend/app/http/v1/creator.go

@@ -55,14 +55,15 @@ type Creator struct{}
 // @Bind user local key(__ctx_user)
 // @Bind id path
 // @Bind form body
-func (c *Creator) GrantCoupon(ctx fiber.Ctx, user *models.User, id int64, form *dto.CouponGrantForm) (string, error) {
+func (c *Creator) GrantCoupon(ctx fiber.Ctx, _ *models.User, id int64, form *dto.CouponGrantForm) (string, error) {
 	tenantID := getTenantID(ctx)
 	if form == nil {
 		return "", errorx.ErrInvalidParameter.WithMsg("参数无效")
 	}
 	_, err := services.Coupon.Grant(ctx, tenantID, id, form.UserIDs)
 	if err != nil {
-		return "", err
+		return "", errorx.ErrOperationFailed.WithCause(err)
 	}
+
 	return "Granted", nil
 }