DiscipleManager 与 TimeSystem 随 MainGame 场景挂载，打通弟子增删信号到 UI

生命周期重构：
- TimeSystem 退出 Autoload，改挂 MainGame.tscn 子节点，补 class_name；
  HUD 对时间系统的引用由全局名改为 %TimeSystem（unique_name_in_owner）
- DiscipleManager 挂 MainGame.tscn（原无效 Autoload 注册已删），
  进游戏随场景创建、返回主菜单随树销毁，杜绝弟子数据跨轮回残留

信号闭环：
- 场景连接 disciple_added / disciple_removed 到 MainGame 回调，
  回调转调 Manager.add_disciple_card / remove_disciple_card（卡按 id 同步增删）
- MainGame._ready 按 NEW_GAME 触发 spawn_initial_roster()，
  父节点 _ready 时序最晚，保证卡片连接先于首批信号就绪
- 恢复误删的 sign_return_mainmenu 场景连接（返回主菜单建组存档链路）

注意：MainGame._process 内含临时删除测试（1000 帧后删 id=2 弟子），
演示移除链路用，后续版本应移除

project.godot

@@ -18,7 +18,6 @@ config/icon="res://icon.svg"
 [autoload]
 
 GameState="*res://src/Core/GameState.gd"
-TimeSystem="*res://src/Core/TimeSystem.gd"
 Settings="*res://src/Core/Settings.gd"
 SaveSystem="*res://src/Core/SaveSystem.gd"
 

src/Core/MainGame.gd

@@ -1,5 +1,17 @@
 extends Node
 
+var cnt := 0;
+func _ready() -> void:
+	%DiscipleManager.spawn_initial_roster()
+	pass
+
+func _process(delta: float) -> void:
+	if cnt >= 1000:
+		var d : Disciple= %DiscipleManager.get_disciple(2);
+		%DiscipleManager.remove_disciple(d);
+	else:
+		cnt = cnt + 1;
+	pass
 
 func _on_top_bar_hud_sign_return_mainmenu() -> void:
 	if GameState.mode == GameState.GameMode.NEW_GAME:
@@ -8,3 +20,13 @@ func _on_top_bar_hud_sign_return_mainmenu() -> void:
 		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.
+
+func _on_disciple_manager_disciple_added(disciple: Disciple) -> void:
+	$PanelContainer/Manager.add_disciple_card(disciple)
+	pass # Replace with function body.
+
+
+
+func _on_disciple_manager_disciple_removed(disciple: Disciple) -> void:
+	$PanelContainer/Manager.remove_disciple_card(disciple.id)
+	pass # Replace with function body.

src/Core/MainGame.tscn

@@ -1,12 +1,14 @@
 [gd_scene format=3 uid="uid://c1exffg84ojqx"]
 
-[ext_resource type="Script" uid="uid://cr4by5k8vgkcq" path="res://src/Core/MainGame.gd" id="1_8bu23"]
+[ext_resource type="Script" uid="uid://cr4by5k8vgkcq" path="res://src/Core/MainGame.gd" id="1_2atgf"]
+[ext_resource type="Script" uid="uid://bstiea1nx61b8" path="res://src/Character/DiscipleManager.gd" id="1_dl5bp"]
 [ext_resource type="PackedScene" uid="uid://d3njijtx7ws1m" path="res://src/UI/HUD/MainSceneHud.tscn" id="2_8bu23"]
 [ext_resource type="StyleBox" uid="uid://e86yw57h4v2s" path="res://resources/manager_style_box_flat.tres" id="3_dl5bp"]
 [ext_resource type="PackedScene" uid="uid://d1mbwdtarjqof" path="res://src/UI/Panels/Manager/Manager.tscn" id="4_58g0x"]
+[ext_resource type="Script" uid="uid://b8f8t2phmhq2e" path="res://src/Core/TimeSystem.gd" id="5_58g0x"]
 
 [node name="MainGame" type="Node" unique_id=42551660]
-script = ExtResource("1_8bu23")
+script = ExtResource("1_2atgf")
 
 [node name="MainHud" parent="." unique_id=836125968 instance=ExtResource("2_8bu23")]
 size_flags_horizontal = 3
@@ -23,4 +25,16 @@ theme_override_styles/panel = ExtResource("3_dl5bp")
 [node name="Manager" parent="PanelContainer" unique_id=360636457 instance=ExtResource("4_58g0x")]
 layout_mode = 2
 
+[node name="DiscipleManager" type="Node" parent="." unique_id=1485476702]
+unique_name_in_owner = true
+script = ExtResource("1_dl5bp")
+metadata/_custom_type_script = "uid://bstiea1nx61b8"
+
+[node name="TimeSystem" type="Node" parent="." unique_id=1280036358]
+unique_name_in_owner = true
+script = ExtResource("5_58g0x")
+metadata/_custom_type_script = "uid://b8f8t2phmhq2e"
+
+[connection signal="disciple_added" from="DiscipleManager" to="." method="_on_disciple_manager_disciple_added"]
+[connection signal="disciple_removed" from="DiscipleManager" to="." method="_on_disciple_manager_disciple_removed"]
 [connection signal="sign_return_mainmenu" from="MainHud" to="." method="_on_top_bar_hud_sign_return_mainmenu"]

src/Core/TimeSystem.gd

@@ -1,6 +1,7 @@
 ## 全局时间系统（Autoload 单例）。
 ## 负责游戏时间的推进与播报，仅在世界场景中运行。
 ## 历法：12 月 × 30 日 = 360 日/年。
+class_name TimeSystem
 extends Node
 
 const MONTHS_PER_YEAR := 12

src/UI/HUD/MainSceneHud.gd

@@ -6,8 +6,8 @@ extends Control
 signal sign_return_mainmenu
 
 func _ready() -> void:
-	time_label.text = TimeSystem.get_date_text()
-	TimeSystem.month_passed.connect(_on_TimeMonthPassed)
+	time_label.text = %TimeSystem.get_date_text()
+	%TimeSystem.month_passed.connect(_on_TimeMonthPassed)
 	pass
 
 func _on_ButtonEsc_ButtonUp() -> void:
@@ -20,5 +20,5 @@ func _on_TimeMonthPassed(_year: int, _month: int) -> void:
 
 
 func _on_button_continue_button_up() -> void:
-	TimeSystem.advance_month()
+	%TimeSystem.advance_month()
 	pass # Replace with function body.