curl https://api.cloptima.ai/v1/ai/chat/completions \
-H "Authorization: Bearer $CLOPTIMA_PAT" \
-H "X-Cloptima-Team: data-platform" \
-H "X-Cloptima-App: record-enrichment" \
-H "X-Cloptima-Environment: production" \
-H "Content-Type: application/json" \
-d '{"model": "gpt-5.6-luna", "messages": [{"role": "user", "content": "Classify record batch"}]}'
# When daily/monthly budget ceiling is exhausted, gateway rejects pre-flight (0 provider spend):
# HTTP/1.1 403 Forbidden
# {"error": "Daily budget limit exceeded", "reason": "gateway_daily_budget_exceeded", "violations": ["gateway_daily_budget_exceeded"]}