string query_type  # "id", "name", "recent"
string query_value  # person_id, name, or days_back
---
bool found
int32 person_id
string name
string relationship_tier  # "stranger", "regular", "favorite"
float32 relationship_score  # 0.0–1.0
int32 interaction_count
string[] custom_greetings  # Per-tier personalized greetings
string notes  # Free-form notes about person
builtin_interfaces/Time last_seen
