Today the Claude auth picker has only three real-auth options. A user
without a Pro/Max subscription, an OAuth token, or an API key has no
graceful escape — Ctrl-C kills setup entirely.
Add a fourth option that confirms the trade-off (no agent runtime + no
Claude debug help during setup) and, on Yes, marks auth skipped and
lets setup continue. On No, loop back to the picker. Existing
NANOCLAW_SKIP=auth env hatch is unchanged.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>