KG traversal only followed outgoing edges, returning empty results for
entities with only incoming relations (e.g. Kuwait had 1 incoming but 0
outgoing). Add 3-tier fallback: (1) outgoing deep traversal, (2) direct
connections via ListRelations (bidirectional, cap 10), (3) search query
fallback. Also cap traversal results at 20 and search relations at 5 per
entity with hints for the model to query further.
viettranx
06ee648392