feat: 添加暂停面板类名并优化字段显示逻辑

修复TipBox销毁时的动画冲突问题
重构游戏重启逻辑以包含库存保存
移除GameOver面板中的重复库存保存代码
优化UIState中的字段显示控制和提示清除功能

scripts/Contents/Panels/GameOver.gd

@@ -9,7 +9,5 @@ func beforeOpen(args: Array = []):
 	audio.play()
 	var reasonTemplate = MathTool.randomChoiceFrom(GameRule.deadReasons)
 	deadreason.text = ("[color=gray]" + reasonTemplate + "凶手是[b]%s[/b]的[b]%s[/b]。[/color]") % args
-	for item in OutGameStorage.inventory:
-		OutGameStorage.inventory[item] += UIState.player.inventory[item]
 func afterOpen(_args: Array = []):
 	gameControl.enable()

scripts/Contents/Panels/Pause.gd

@@ -1,5 +1,6 @@
 @tool
 extends FullscreenPanelBase
+class_name PausePanel
 
 @onready var gameControl: GameControl = $%gameControl