💔 耐久磨損與懲罰機制

玩家死亡時，保留的裝備將根據基礎懲罰比例與附魔等級承受耐久磨損。若損耗值超過物品最大耐久度，該裝備將徹底損毀。

🧮 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

當物品欄含有回響碎片（Echo Shard）時，死亡將消耗 1 枚碎片以完全抵消所有裝備耐久磨損，並播放專屬共鳴音效。

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.