feat: add paired goat care

docs/SIMULATION_DEFINITIONS.md

@@ -37,10 +37,10 @@ both require one stored wood without duplicating that rule.
 farmer profession and declares an exact one-food completion cost. Selection,
 animal target reservation, and completion remain separate; NPC and player
 completion both use `AnimalCareSystem`'s same pantry-to-animal transaction.
-`SimulationIds` also names Dunja's shelter and pasture anchors. These IDs are
-saved routine vocabulary; their loaded positions come from
-`AnimalRoutineSite` rather than entering an action definition or resource
-registry.
+`SimulationIds` names Dunja and Zora, their private shelter anchors, and the
+shared pasture anchor. These IDs are saved routine vocabulary; their loaded
+positions and private/shared ownership come from `AnimalRoutineSite` rather
+than entering an action definition or resource registry.
 
 ## Current profession contract