Research Review via External Reviewer Backend (ultra reasoning)

🔒 Do not wrap this skill in /loop, /schedule, or CronCreate. It is verdict-bearing — it produces a cross-model review verdict, multi-round with reviewer thread continuity. An external timer re-fires the verdict on wall-clock time and breaks the reviewer's round-to-round memory: zero new signal, full token cost. Schedule the external wait that precedes it (work ready → then review once), not the verdict. See shared-references/external-cadence.md.

Get a multi-round critical review of research work from the selected external reviewer backend with maximum reasoning depth.

Constants

• REVIEWER_MODEL = gpt-6-astra — Default model for the Codex backend, reasoning effort ultra (deep-audit tier). Must be an OpenAI model (e.g., gpt-6-astra, gpt-6.1-sol). Manual backend uses a model the user chooses — it must be a recognized model from a different family (OpenAI, Anthropic, Google, DeepSeek, Moonshot/Kimi, Qwen).
• REVIEWER_BACKEND = codex — Default: Codex MCP (ultra). Resolve — reviewer:, project .aris/reviewer.json, then this default using reviewer_route.py (--host claude-code --tier deep), per reviewer-backends.md. Gemini/Antigravity, Grok, and Claude Code use that contract at every call below. Legacy Oracle/manual contracts remain in reviewer-routing.md; unavailable selected routes do not silently fall back.

Reviewer Calling Convention