GHSA-r466-rxw4-3j9j: Evolver: Path Traversal via `--out` flag in `fetch` command allows Arbitrary File Write

A path traversal vulnerability in the skill download (fetch) command allows attackers to write files to arbitrary locations on the filesystem. The --out= flag accepts user-provided paths without validation, enabling directory traversal attacks that can overwrite critical system files or create files in sensitive locations.