fix(integration): codex reviewer on gpt-5.5 (xhigh) + evidence serialization + R-OUTCOME demote#810

Yiminnn merged 2 commits into

mainbenchflow-ai/benchflow:mainfrom

fix/integration-codex-deepseek-r-outcomebenchflow-ai/benchflow:fix/integration-codex-deepseek-r-outcomeCopy head branch name to clipboard