💔 耐久损耗与惩罚机制

玩家死亡时，保留的装备将根据基础惩罚百分比和附魔权重承受耐久度磨损。若磨损值达到或超过物品最大耐久度，该物品将彻底损坏碎裂。

🧮 Wear Penalty Formula

$$\text{Total Wear %} = \text{Base Penalty (10.0%)} + (\sum \text{Enchantment Levels} \times 0.1%)$$

$$\text{Damage Added} = \max\left(1, \text{round}\left(\frac{\text{Total Wear %}}{100} \times \text{Max Durability}\right)\right)$$

⚠️ Lethal Wear: If the calculated damage exceeds the item's remaining durability, the item breaks completely and disappears.

🔮 Echo Shard Insurance

携带回响碎片（Echo Shard）时，死亡将消耗 1 枚回响碎片，完全免除所有装备的耐久度磨损，并播放专属音效提示。

Consumes exactly 1 minecraft:echo_shard from main inventory.
Protects all items across equipment and inventory slots.
Displays custom HUD notification and chime sound cue upon respawn.