Review and consult use high reasoning — thorough but not slow.
Challenge (adversarial) uses xhigh — maximum depth for breaking code.
All modes enable web_search_cached so Codex can look up docs/APIs.
gpt-5.2-codex is the only model available with ChatGPT login.
All commands now use model_reasoning_effort="high" for maximum
depth — the whole point is a thorough second opinion.
Three modes: code review with pass/fail gate, adversarial challenge mode,
and conversational consult with session continuity. First multi-AI skill
in gstack, wrapping OpenAI's Codex CLI.
Garry Tan