Function create_worktree 

pub fn create_worktree(
    repo_root: impl AsRef<Path>,
    loop_id: &str,
    config: &WorktreeConfig,
) -> Result<Worktree, WorktreeError>

Create a new worktree for a parallel Ralph loop.

Creates a new branch and worktree at {config.worktree_dir}/{loop_id}. The branch is created from HEAD of the current branch.

Arguments

• repo_root - Root of the git repository
• loop_id - Unique identifier for the loop (e.g., “ralph-20250124-a3f2”)
• config - Worktree configuration

Returns

Information about the created worktree.