Item action and kind schemas with texts in seven languages

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

locale/schema_zh.properties

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+items/schema/builtin/item_add = 给予物品
+items/schema/builtin/item_add_desc = 宝箱、礼物、地图上的发现
+items/schema/field/item = 物品
+items/schema/field/count = 数量
+items/schema/kind/item = 物品
+items/schema/kind/item_desc = 背包里的一切：食物、药水、装备
+items/schema/field/name = 名称
+items/schema/field/description = 描述
+items/schema/field/cost = 消耗
+items/schema/field/picture = 图片
+items/schema/field/item_type = 物品类型
+items/schema/field/item_type_desc = 逗号分隔：Resource、Food、Used、TargetUsed、Quest、Recipe、CantDrop
+items/schema/field/item_action = 物品动作
+items/schema/field/item_action_desc = action/heal、action/equip、action/stat_up……或 null