- Pass extraction_method="llm_typed" in structured JSON fallback path of
extract_relations_llm so fallback-produced relations carry consistent
metadata regardless of which parse path succeeds
- Reduce NodeEmbedder test params (dim=16, walk_length=10, num_walks=2,
epochs=1) to avoid unnecessary Node2Vec/Word2Vec training time in CI
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>