v0.1.1: rename to registry-witness
Rename: evidence-server -> registry-witness. Crate names, binary, media types, audience, Cargo feature, and project-labeled env vars renamed. No backward compatibility. See apps/rename-plan-2026-05-23.md.
Rename: evidence-server -> registry-witness. Crate names, binary, media types, audience, Cargo feature, and project-labeled env vars renamed. No backward compatibility. See apps/rename-plan-2026-05-23.md.