Datapack 51happy

Developer’s note: Break a stone pickaxe during May 1–5 (real dates via TimeLib) to earn “Glorious Labor”. Supports 10 languages. Rewards: XP, new pickaxe, effects & localized messages. 5月1日至5日（通过TimeLib获取真实日期）耗尽石镐耐久，获得“劳动最光荣”成就。支持10种语言。奖励：经验、新石镐、特效及本地化消息。