feat: 添加鸡蛋资源并实现字段显示优势功能

- 新增鸡蛋资源文件及导入配置
- 在FieldShow组件中添加showAdvantage属性控制优势显示
- 修正武器类默认名称错误
- 添加entityNegativeFields数组存储负数字段

scripts/Structs/Feed.gd

@@ -86,6 +86,7 @@ func rebuildInfo():
 		var fieldShow: FieldShow = ComponentManager.getUIComponent("FieldShow").instantiate()
 		fieldShow.field = field
 		fieldShow.value = value
+		fieldShow.showAdvantage = true
 		if is_instance_valid(UIState.player):
 			fieldShow.maxed = value + UIState.player.fields[field] > FieldStore.entityMaxValueMap.get(field, INF)
 		fieldsBox.add_child(fieldShow)

scripts/Structs/Weapon.gd

@@ -3,7 +3,7 @@ extends PanelContainer
 class_name Weapon
 
 @export var avatarTexture: Texture2D = null
-@export var displayName: String = "未命名饲料"
+@export var displayName: String = "未命名武器"
 @export var quality: WeaponName.Quality = WeaponName.Quality.COMMON
 @export var typeTopic: WeaponName.TypeTopic = WeaponName.TypeTopic.IMPACT
 @export var soulLevel: int = 1