feat(游戏结束): 添加子弹显示名称并改进死亡信息显示

- 为所有子弹类型添加displayName属性用于显示
- 修改GameOver面板显示死亡原因，包含子弹名称和发射者
- 更新死亡原因文本格式为富文本样式
- 移除GameOver面板中多余的LabelSettings资源

scripts/Contents/Panels/GameOver.gd

@@ -1,10 +1,10 @@
 @tool
 extends FullscreenPanelBase
 
-@onready var audio = $"%audio"
-@onready var deadreason = $"%deadreason"
+@onready var audio: AudioStreamPlayer2D = $"%audio"
+@onready var deadreason: RichTextLabel = $"%deadreason"
 
 func beforeOpen(args: Array = []):
 	audio.play()
 	var reasonTemplate = MathTool.randc_from(GameRule.deadReasons)
-	deadreason.text = (reasonTemplate + "凶手是%s。") % args
+	deadreason.text = ("[color=gray]" + reasonTemplate + "凶手是[b]%s[/b]的[b]%s[/b]。[/color]") % args

scripts/Statemachine/BulletBase.gd

@@ -1,6 +1,7 @@
 extends Area2D
 class_name BulletBase
 
+@export var displayName: String = "未知子弹"
 @export var speed: float = 10.0
 @export var damage: float = 10.0
 @export var penerate: float = 0.0

scripts/Statemachine/EntityBase.gd

@@ -290,7 +290,7 @@ func tryDie(by: BulletBase):
 	)
 	if isPlayer():
 		if UIState.player == self:
-			UIState.setPanel("GameOver", [displayName, by.launcher.displayName])
+			UIState.setPanel("GameOver", [displayName, by.launcher.displayName, by.displayName])
 	EffectController.create(preload("res://components/Effects/DeadBlood.tscn"), texture.global_position).shot()
 	await die()
 func tryHeal(count: float):
@@ -299,7 +299,6 @@ func tryHeal(count: float):
 		playSound("heal")
 		healed.emit(heal(count * fields.get(FieldStore.Entity.HEAL_ABILITY)))
 		healthChanged.emit(health)
-
 func findWeaponAnchor(weaponName: String):
 	var anchor = $"%weapons".get_node_or_null(weaponName)
 	if anchor is Node2D: