Method retry

packages/server/src/services/task.service.ts:768–818

* 重试任务 * * 1. 停止当前 ACTIVE Workspace 的所有 Session * 2. 将 ACTIVE Workspace 标记为 ABANDONED（保留 worktree 供参考） * 3. 重置 Task 状态为 TODO * 4. 通知前端 — 用户可重新派发 Agent（会创建新 Worktree）

(id: string)

    }
    ensureProjectIsMutable(task.project, 'change task status');

    const currentStatus = task.status as TaskStatus;

    // 如果状态没有变化，直接返回
    if (currentStatus === status) {
      return withProjectGitMetadata(task);
    }

    // 校验状态流转是否合法
    const allowedTransitions = VALID_TRANSITIONS[currentStatus];
    if (!allowedTransitions || !allowedTransitions.includes(status)) {
      throw new InvalidStateTransitionError(currentStatus, status);
    }

    // 切换状态时自动计算新列的 position
    const maxPosition = await prisma.task.aggregate({
      where: { projectId: task.projectId, status, deletedAt: null },
      _max: { position: true },
    });

    const updated = await prisma.task.update({
      where: { id },
      data: {
        status,
        position: (maxPosition._max.position ?? 0) + 1,
      },
    });

    // 通知前端
    this.emitTaskUpdated(id, task.projectId, status);

    return {
      ...updated,
      project: {
        ...task.project,
        ...buildProjectGitMetadata(task.project),
      },
    };
  }

  /**
   * 更新任务位置（用于拖拽排序）
   * 如果同时传了 status，会进行状态流转并通知前端
   */
  async updatePosition(id: string, position: number, status?: TaskStatus) {
    const task = await prisma.task.findFirst({
      where: { id, deletedAt: null },
      include: { project: true },
    });
    if (!task) {
      throw new NotFoundError('Task', id);
    }
    ensureProjectIsMutable(task.project, 'reorder tasks');