todo::heavy_check_mark:待办事项列表管理器，灵感来自todo.txt，使用jsonl格式

去做 受启发的待办事项列表管理器，使用格式 Usage: todo <command> <arguments> Commands: * add <text> add new task * start <tasknumber> [text] mark task as started, with optional note * done <tasknumber> [text] mark task as completed, with optional note * block <tasknumber> [text] mark task as blocked, with optional note * reset <tasknumber> [text] reset task to new state, with