Resolves the setup-hook harness conflict (keep _setup_ready_line, take main's gstack_canonical_claude_root slice) and treats main's new _gstack_bun_below status 2 (unparseable) as not satisfying a >= pin in the installer's jq fallback.
Co-authored-by: capy-ai[bot] <230910855+capy-ai[bot]@users.noreply.github.com>