.DS_Store file triggers ENOTDIR error during platform installation

[williamthorsen]

This error is triggered when tsx packages/agents/src/cli.ts install --link --force is run:

Installing for platform: rovodev
Error: ENOTDIR: not a directory, open '/Users/william/.rovodev/skills/.DS_Store/SKILL.md'

I resolve it by deleting the .DS_Store file.

Identify the cause of the error and write a fix for it.

Also identify the class of error and solve for those: Could other files in target directories cause a similar error?