Draft: Distinguish business names from technical artefacts (closes #691)
Apply #647 (closed) naming on Core Vocabulary and Architecture: business prose uses Product Passport, Facility Record, Traceability Event, Identity Anchor, Identity Resolver, Conformity Vocabulary, and Conformity Credential; technical artefacts are linked via UNTP web addresses. Schema class names (DigitalProductPassport etc.) unchanged. Ontology comments updated and docs regenerated. Other credential pages remain a follow-up. Closes #691.