回合结算自动存档，新游戏自动创建存档组

src/Core/MainGame.gd

@@ -2,6 +2,9 @@ extends Node
 
 
 func _on_top_bar_hud_sign_return_mainmenu() -> void:
-	# SaveSystem.save_auto(GameState.profile_id)
+	if GameState.mode == GameState.GameMode.NEW_GAME:
+		if GameState.profile_id == 0:
+			GameState.profile_id = SaveSystem.create_profile()
+		SaveSystem.save(GameState.profile_id)   # 进游戏立即存首档，防开局就丢
 	get_tree().change_scene_to_file("res://src/UI/Panels/MainMenu/MainMenu.tscn")
 	pass # Replace with function body.

src/Core/MainGame.tscn

@@ -2,7 +2,6 @@
 
 [ext_resource type="Script" uid="uid://cr4by5k8vgkcq" path="res://src/Core/MainGame.gd" id="1_8bu23"]
 [ext_resource type="PackedScene" uid="uid://d3njijtx7ws1m" path="res://src/UI/HUD/MainSceneHud.tscn" id="2_8bu23"]
-[ext_resource type="PackedScene" uid="uid://xecv3j1wfxmv" path="res://src/UI/HUD/MainGameButtomHud.tscn" id="3_oyqkd"]
 
 [node name="MainGame" type="Node" unique_id=42551660]
 script = ExtResource("1_8bu23")
@@ -11,7 +10,4 @@ script = ExtResource("1_8bu23")
 size_flags_horizontal = 3
 size_flags_vertical = 3
 
-[node name="MainGameButtomHud" parent="." unique_id=12078477 instance=ExtResource("3_oyqkd")]
-visible = false
-
 [connection signal="sign_return_mainmenu" from="MainHud" to="." method="_on_top_bar_hud_sign_return_mainmenu"]

src/Core/TimeSystem.gd

@@ -65,6 +65,10 @@ func advance_month() -> void:
 	if curr_season != prev_season:
 		season_changed.emit(new_year, curr_season)
 
+	# 6. 回合结算自动存档
+	if GameState.profile_id != 0:
+		SaveSystem.save(GameState.profile_id)
+
 	_in_turn = false
 	
 ## 日期显示文本，如 "第3年 5月"。