bug[dashboard]: Failed to serve dashboard: Error: ENOENT: no such file or directory, mkdir '/.data'

version: 2.10.1

installed via npm

reproduce:

```shell
ccm init
ccm dashboard
```

and I got this:

<img width="787" height="511" alt="Image" src="https://github.com/user-attachments/assets/869b013a-1d4c-43e2-a1e8-d20fa6135c8b" />

Maybe `./data` instead of `/.data` ?