Function handleToolCancelled

ui/src/stores/tools.ts:120–125

(id: string, reason?: string)

   * 处理工具取消事件
   */
  const handleToolCancelled = (id: string, reason?: string) => {
    updateTool(id, {
      state: "cancelled",
      error: reason,
    });
  };

  /**
   * 获取指定工具的状态