feat: structured narrative event feed with per-NPC inspector timeline

Add narrative event types (task_started, npc_slept, npc_died, resource_depleted) alongside economic transfers. EconomicEventRecord gains create_narrative factory and human-readable description method. SimulationManager records task-start and sleep/death events, exposes get_npc_events() for per-NPC history queries. Inspector now shows a Recent timeline of the last 5 events for the selected NPC, plus displays carried wood count. Relax EconomicEventRecord validation to accept non-economic events. Update roadmap with completed milestones.

simulation/SimulationManager.gd

@@ -126,6 +126,13 @@ func simulate_tick() -> void:
 				latest_decisions[npc.id] = selection
 				npc_decision_recorded.emit(npc, selection)
 				npc.set_task(selection.action_id, selection.duration_override)
+				var action_def := SimulationDefinitions.get_action(selection.action_id)
+				var action_display := String(selection.action_id)
+				if action_def != null:
+					action_display = action_def.display_name
+				record_narrative_event(
+					SimulationIds.EVENT_TASK_STARTED, npc.id, &"", action_display
+				)
 
 		if old_task != npc.current_task and old_target != &"":
 			release_npc_reservation(npc.id)
@@ -135,6 +142,7 @@ func simulate_tick() -> void:
 				release_npc_reservation(npc.id)
 			npc_died.emit(npc)
 			npc_task_changed.emit(npc, old_task, npc.current_task)
+			record_narrative_event(SimulationIds.EVENT_NPC_DIED, npc.id)
 
 			if debug_logs:
 				print("[SimulationManager] NPC died: ", npc.npc_name)
@@ -218,6 +226,7 @@ func simulate_tick() -> void:
 			elif completed_task == SimulationIds.ACTION_SLEEP:
 				npc.energy = minf(npc.energy + 40.0, 100.0)
 				npc.position = npc.home_position
+				record_narrative_event(SimulationIds.EVENT_NPC_SLEPT, npc.id)
 				if debug_logs:
 					print("[SimulationManager] ", npc.npc_name, " completed sleep at home")
 			elif (
@@ -460,6 +469,32 @@ func _record_economic_event(
 	economic_event_recorded.emit(event)
 
 
+func record_narrative_event(
+	event_type: StringName,
+	actor_id: int,
+	source_id: StringName = &"",
+	action_display: String = ""
+) -> void:
+	var event := EconomicEventRecord.create_narrative(
+		next_event_id, event_type, tick_count, actor_id, source_id, action_display
+	)
+	next_event_id += 1
+	economic_events.append(event)
+	economic_event_recorded.emit(event)
+
+
+func get_npc_events(npc_id: int, max_count: int = 8) -> Array[EconomicEventRecord]:
+	var results: Array[EconomicEventRecord] = []
+	for i in range(economic_events.size() - 1, -1, -1):
+		var event: EconomicEventRecord = economic_events[i]
+		if event.data["actor_id"] == npc_id:
+			results.append(event)
+			if results.size() >= max_count:
+				break
+	results.reverse()
+	return results
+
+
 func _initialize_storage() -> void:
 	if not storage_states.has(SimulationIds.STORAGE_VILLAGE_PANTRY):
 		storage_states[SimulationIds.STORAGE_VILLAGE_PANTRY] = (StorageStateRecord.create(