Verify over HTTP

confium-verify-server exposes the pipeline as JSON-over-HTTP:

confium-verify-server --listen 127.0.0.1:9420

curl -s localhost:9420/verify/signatif \
  -H 'content-type: application/json' \
  -d @request.json

The response carries the same coverage / label / accept triple as every other surface. Keep the server stateless — all trust inputs arrive with each request, so verifiers pin exactly the anchors and registry they intend.