Function get_commit_files 

pub fn get_commit_files(
    repo_path: &Path,
    commit_ref: &str,
) -> Result<Vec<String>>

Retrieves the list of files changed in a commit.

Returns the file paths relative to the repository root for all files that were added, modified, or deleted in the commit.

Errors

Returns an error if the repository cannot be found or the commit reference cannot be resolved.