Resolves the conflict in semantica/export/rdf_exporter.py between this
branch's metadata clauses (entity/graph metadata statements) and
main's IRI-normalization and XML-escaping hardening
(_as_turtle_iri / xml_escape, landed after this branch's last sync).
Kept both: entity/relationship/graph subjects and objects now go
through _as_turtle_iri (Turtle) or _as_turtle_iri + xml_escape
(RDF/XML), same as every other identifier in these serializers,
while the metadata-clause list building and graph_uri handling from
this branch are preserved unchanged. graph_uri is now normalized the
same way for consistency with the rest of the file.
Verified: tests/export + tests/ontology (411 tests) and the existing
Turtle-IRI regression suite (test_rdf_exporter_turtle_iris.py, 9
tests) all pass against the merged code.
KaifAhmad1
fb02c868f8