entity_id,entity_name,type,description,key_attributes
ENT-GRAPH-NODE,图节点,entity,"关系图中的节点","node_id, node_type, label, status, group_id"
ENT-GRAPH-EDGE,图边,entity,"关系图中的边","source_id, target_id, relation_type"
ENT-GRAPH-VIEW,图视图,aggregate,"完整图视图","nodes, edges, groups, filter_level"