fix unresolved links on sync

src/basic_memory/services/relation_service.py

@@ -47,6 +47,7 @@ class RelationService(BaseService[RelationRepository]):
                 relation = RelationModel(
                     from_id=from_entity.id,
                     to_id=to_entity.id,
+                    to_name=to_entity.title,
                     relation_type=rs.relation_type,
                     context=rs.context,
                 )

src/basic_memory/services/search_service.py

@@ -177,7 +177,7 @@ class SearchService:
         # Only index outgoing relations (ones defined in this file)
         for rel in entity.outgoing_relations:
             # Create descriptive title showing the relationship
-            relation_title = f"{rel.from_entity.title} → {rel.to_entity.title}"
+            relation_title = f"{rel.from_entity.title} → {rel.to_entity.title}" if rel.to_entity else f"{rel.from_entity.title}"
 
             await self._do_index(
                 SearchIndexRow(