POST /api/v1/questions runs ask (rank + judge), selects the paragraphs that
carry probability mass, and streams one answer-model call over them. Below
the coverage gate no model is called and the response names the gap. With
save: true (signed-in user or API key) the answer lands in output/ as a
synth-shaped document with sources, confidence and the answering model.
The Answers page streams the same use case and lists saved answers.
Anthropic is the first IAnswerModel adapter; the answer model is chosen per
request or from Wiki:AnswerModels:Active.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>