fix: Return matched chunk text in search results (#601)

Signed-off-by: phernandez <paul@basicmachines.co>
Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

src/basic_memory/api/v2/utils.py

@@ -177,6 +177,7 @@ async def to_search_results(entity_service: EntityService, results: List[SearchI
                 score=r.score,  # pyright: ignore
                 entity=entities[0].permalink if entities else None,
                 content=r.content,
+                matched_chunk=r.matched_chunk_text,
                 file_path=r.file_path,
                 metadata=r.metadata,
                 entity_id=entity_id,