Please add a "Project not found" message

还没有人认领这个 Issue。

I will frequently forget to change directory into my project directories from the command-line before attempting to run the SWA CLI. As it is currently, the CLI will simply state "node exited with code 0" with no additional information.

It would be helpful if the CLI tool could display a message stating when no project could be found in the current directory before quitting. It would be a nice reminder to check the path that we're executing from instead of being frustrated at the CLI seemingly bugging out.

首先定位 SWA CLI 中检测项目并报告服务器退出状态的入口点。在没有项目的目录中重现该命令，然后跟踪无项目路径。完成的标准是：CLI 在退出前明确报告当前目录中未找到项目。

由索引模型根据 Issue 内容生成。