feat(角色): 添加小鸡角色濒死音效并调整属性

添加新的音效资源并修改小鸡角色的属性配置：
1. 新增濒死音效"Dun Dun Dunnn.wav"和受伤音效"foxhurt.mp3"
2. 将小鸡最大生命值从1500调整为15
3. 添加濒死状态检测，当生命值低于10%时播放特殊音效
4. 调整粒子效果和状态栏位置

scripts/Contents/Characters/Chick.gd

@@ -3,8 +3,10 @@ class_name Chick
 
 @onready var firepot = $"%firepot"
 
+var played: bool = false
+
 func register():
-	fields[FieldStore.Entity.MAX_HEALTH] = 1500
+	fields[FieldStore.Entity.MAX_HEALTH] = 15
 	fields[FieldStore.Entity.MOVEMENT_SPEED] = 0.4
 	attackCooldownMap[0] = 400
 	attackCooldownMap[1] = 12000
@@ -12,6 +14,12 @@ func register():
 	attackCooldownMap[3] = 3000
 	attackCooldownMap[4] = 4000
 	sprintMultiplier = 50
+	healthChanged.connect(
+		func(h):
+			if !played and h <= fields.get(FieldStore.Entity.MAX_HEALTH) * 0.1:
+				played = true
+				playSound("readyToDie")
+	)
 func spawn():
 	texture.play("walk")