feat: derive capable opportunity helpers

tests/jajce_runtime_integration_test.gd

@@ -239,6 +239,8 @@ func _run() -> void:
 	)
 	await process_frame
 	contributor = simulation_manager.npcs[contributor.id]
+	witness = simulation_manager.npcs[witness.id]
+	listener = simulation_manager.npcs[listener.id]
 	contributor_visual = world_view.active_npc_visuals[contributor.id]
 	player_opportunity = simulation_manager.get_active_opportunity()
 	_check(
@@ -277,15 +279,39 @@ func _run() -> void:
 		SimulationIds.RESOURCE_WOOD, woodpile_state.get_amount(SimulationIds.RESOURCE_WOOD)
 	)
 	simulation_manager.economy.sync_resource(SimulationIds.RESOURCE_WOOD)
+	var woodpile_node := (
+		main_scene.get_node("JajceWorld/WorldObjects/StorageSites/VillageWoodpile") as StorageNode
+	)
+	contributor.position = woodpile_node.get_interaction_position()
+	witness.position = contributor.position
+	witness.profession = SimulationIds.PROFESSION_WOODCUTTER
 	contributor.set_task(SimulationIds.ACTION_STUDY, 1.0)
+	contributor.target_id = SimulationIds.STORAGE_VILLAGE_WOODPILE
+	contributor.travel_target_position = contributor.position
 	contributor.start_working()
 	simulation_manager.simulate_tick()
 	village_ui.selected_npc_index = contributor.id
 	village_ui.call("_refresh_npc_inspector")
+	var runtime_helper: OpportunityHelperResult = simulation_manager.get_active_opportunity_helper()
+	_check(
+		(
+			runtime_helper != null
+			and runtime_helper.helper_npc_id == witness.id
+			and runtime_helper.action_id == SimulationIds.ACTION_GATHER_WOOD
+		),
+		"Runtime helper query should derive the informed trusted woodcutter"
+	)
+	var runtime_helper_reason := (
+		"Knows the need; trust %.2f toward %s" % [runtime_helper.trust, contributor.npc_name]
+		if runtime_helper != null
+		else "missing helper"
+	)
 	_check(
 		(
 			"◆ Supply wood for blocked work" in village_stats_label.text
 			and "could not finish Study" in village_stats_label.text
+			and "Possible helper: %s — Gather Wood" % witness.npc_name in village_stats_label.text
+			and runtime_helper_reason in village_stats_label.text
 			and "◆ Find wood for Study" in inspector_label.text
 			and not contributor_visual.get_node("OpportunityConcernRoot").visible
 		),