feat: replace activity markers with typed sites

tests/jajce_runtime_integration_test.gd

@@ -31,6 +31,7 @@ func _run() -> void:
 			not main_scene.has_node("World")
 			and not main_scene.has_node("ResourceNodes")
 			and not main_scene.has_node("ActivityMarkers")
+			and not main_scene.has_node("JajceWorld/LegacyActivityMarkers")
 		),
 		"Runtime should not retain duplicate flat-world objects"
 	)
@@ -57,12 +58,10 @@ func _run() -> void:
 	)
 	var pantry := main_scene.get_node("JajceWorld/WorldObjects/StorageSites/VillagePantry") as StorageNode
 	destinations.append(pantry.get_interaction_position())
-	for marker_path in [
-		"JajceWorld/LegacyActivityMarkers/GuardZone",
-		"JajceWorld/LegacyActivityMarkers/StudyZone",
-		"JajceWorld/LegacyActivityMarkers/RestZone"
-	]:
-		destinations.append(main_scene.get_node(marker_path).global_position)
+	var activity_root := main_scene.get_node("JajceWorld/WorldObjects/ActivitySites")
+	_check(activity_root.get_child_count() == 3, "Runtime should expose three typed activity sites")
+	for site in activity_root.get_children():
+		destinations.append((site as ActivitySite).get_interaction_position())
 
 	for resource in resource_root.get_children():
 		destinations.append((resource as ResourceNode).interaction_point.global_position)
@@ -96,9 +95,14 @@ func _run() -> void:
 		storage_target.get("target_id", "") == String(SimulationIds.STORAGE_VILLAGE_PANTRY),
 		"Runtime adapter should route storage actions to village_pantry"
 	)
+	var study_target := adapter.get_activity_target(SimulationIds.ACTION_STUDY)
+	_check(
+		study_target.get("target_id", "") == "study_desk",
+		"Runtime adapter should route study to the typed study desk"
+	)
 
 	if failures.is_empty():
-		print("[TEST] Jajce runtime passed: 6 NPCs, 4 resources, typed pantry route")
+		print("[TEST] Jajce runtime passed: 6 NPCs, typed storage and activity sites")
 		quit(0)
 		return