Template rule lowers the formation barrier for a link type near existing links of the same type-pair. No rule references copying/patterns. Self-promotion is measured, not assumed.
Archetype population (top)
Lineage families (variant ≈ ±1 node/link)
Heuristic: parent = known archetype that is one node smaller / one link different with matching WL signature. Not exact graph-edit-distance (cost) — labeled honestly.