Resolve the path anchor from the repository common git dir so running wtc from inside an existing worktree still names sibling worktrees from the main checkout root.
Co-authored-by: Codex <noreply@openai.com>
Add netty-specific worktree helper commands and a zsh wrapper that creates sibling worktrees and cds into them.
Also split script packaging so Darwin keeps the existing wt integration while netty gets git-worktree-based helpers.
Co-authored-by: Codex <noreply@openai.com>
