feat(角色系统): 重构角色生成和升级系统

- 在EntityBase.gd中修改角色生成逻辑，使用FeedCardBase初始化角色属性
- 调整OutGameStorage.gd中的升级字段初始值和成本配置
- 在ComponentManager.gd中添加抽象组件管理功能
- 更新Rooster.tscn的默认武器为ChainGun
- 在Starter.gd中优化升级界面刷新逻辑，提取rebuildInfo方法
- 在MakeFeed.gd中添加feed卡片重建功能

scripts/Statemachine/EntityBase.gd

@@ -560,8 +560,12 @@ static func generatePlayer(playerName: String) -> EntityBase:
 	var player = generate(ComponentManager.getCharacter("Rooster"), Vector2.ZERO, false)
 	player.displayName = playerName
 	player.name = "Player_%s" % playerName
+	var feed = ComponentManager.getAbstract("FeedCardBase").instantiate() as Feed
 	for field in OutGameStorage.upgradableFieldsValue:
-		player.fields[field] += OutGameStorage.upgradableFieldsValue[field]
+		feed.fields.append(field)
+		feed.fieldValues.append(OutGameStorage.upgradableFieldsValue[field])
+	feed.freeToBuy = true
+	feed.apply(player)
 	return player
 static func generate(
 	entity: PackedScene,