```

feat(gameplay): 实现护盾系统和强化增益选择机制

- 新增护盾功能，包括护盾数值显示和护盾条UI
- 重构盾卫技能，实现坚固壁垒技能效果
- 添加暴击率、吸血率等战斗属性
- 优化增益选择界面，新增传奇品质和刷新机制
- 调整材质纹理和文字着色器效果
- 修复金币显示格式问题
```

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