Live: Clef answered both probes right in ~0.5 s but at 0.21-0.25 confidence, so
the 0.5 floor sent them to the LLM. Expose every confidence and the weakest
question; a request may set its own floor (only changes cost); bench.py takes
clef@0 for calibration and sends a user agent Cloudflare accepts.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01VDkN7ukK1kXkqov8FaZxva