{"title": "Jev Router", "endpoint": "POST /v1/systemone", "request": {"model": "required", "fallback": "optional ordered list", "state": "any", "questions": "TypeSafe question map"}, "headers": ["X-Jev-Provider", "X-Jev-Model", "X-Jev-Latency-Ms", "X-Jev-Cost-Usd", "X-Jev-No-Markup"]}