feat: add durable relative task delays and outage recovery regression

sdk/go/examples/task-query/main.go

@@ -52,15 +52,32 @@ func run() error {
 	if err != nil {
 		return err
 	}
-	businessKey := "object /+% é " + op + " "
+	businessKey := "对象 /+% é " + op + " "
 	var tasks []orbit.Task
 	for i, key := range []string{businessKey, businessKey, businessKey[:len(businessKey)-1]} {
-		out, err := client.SubmitTask(ctx, fmt.Sprintf("query-%s-%d", op, i), orbit.SubmitTaskRequest{QueueID: queue, Handler: "query." + op, HandlerVersion: "v1", PayloadVersion: "v1", Payload: json.RawMessage(`{"object_ref":"examples/input"}`), BusinessKey: key, TaskTimeoutMS: 60000})
+		payload := json.RawMessage(`{"object_ref":"examples/input","format":"text"}`)
+		if i == 1 {
+			payload = json.RawMessage(`{"object_ref":"examples/input","format":"json"}`)
+		}
+		out, err := client.SubmitTask(ctx, fmt.Sprintf("query-%s-%d", op, i), orbit.SubmitTaskRequest{QueueID: queue, Handler: "query." + op, HandlerVersion: "v1", PayloadVersion: "v1", Payload: payload, BusinessKey: key, TaskTimeoutMS: 60000})
 		if err != nil {
 			return err
 		}
 		tasks = append(tasks, out.Task)
 	}
+	// 改参数使用新身份与相同关联键，读取旧任务确认原输入仍保留。
+	for _, task := range tasks[:2] {
+		current, err := client.GetTask(ctx, task.ID)
+		if err != nil {
+			return err
+		}
+		if string(current.Payload) != string(task.Payload) {
+			return errors.New("new linked submission changed existing input")
+		}
+	}
+	if tasks[0].ID == tasks[1].ID || string(tasks[0].Payload) == string(tasks[1].Payload) {
+		return errors.New("parameter change did not create an independent task")
+	}
 	from, before := tasks[0].CreatedAt, tasks[2].CreatedAt.Add(time.Microsecond)
 	query := orbit.ListTasksRequest{QueueID: queue, State: orbit.TaskWaiting, BusinessKey: businessKey, CreatedFrom: &from, CreatedBefore: &before, Limit: 1}
 	matched, pages := 0, 0
@@ -99,6 +116,6 @@ func run() error {
 			return err
 		}
 	}
-	fmt.Printf("matched=%d pages=%d before_excluded=true cancelled=%d\n", matched, pages, len(tasks))
+	fmt.Printf("matched=%d pages=%d before_excluded=true original_payload_preserved=true cancelled=%d\n", matched, pages, len(tasks))
 	return nil
 }