```

feat(gameplay): 添加建筑系统和改进摄像机控制

- 移除人类士兵数据资产文件，重构为建筑放置系统
- 在CharacterData中添加productionInterval和buildingCost字段用于建筑生产
- 实现CameraFollow脚本的完整重写，支持键盘WASD拖动、鼠标拖动、触摸拖动
- 添加摄像机缩放功能，支持上下键和触摸双指缩放
- 更新Projecttile.cs以同时处理单位和建筑目标的伤害检测
- 修改SummonCardButton从法力值召唤改为金币建筑放置模式
- 在UnitBase.cs中更新攻击逻辑以支持对建筑造成伤害
- 升级WorldHealthBar以显示建筑生产进度和更好的缩放补偿
- 修复MainCharacterDebugMovement移除键盘移动输入冲突
- 更新包管理器中的codely.bridge版本从1.0.80到1.0.81
```

Assets/Script/Projectile.cs

@@ -115,13 +115,21 @@ public class Projectile : MonoBehaviour
         }
 
         UnitBase targetUnit = hitObject.GetComponentInParent<UnitBase>();
-        if (targetUnit == null)
+        BuildingHealth targetBuilding = hitObject.GetComponentInParent<BuildingHealth>();
+        if (targetUnit == null && targetBuilding == null)
         {
             return;
         }
 
         hasHit = true;
-        targetUnit.ReceiveDamage(damage, owner);
+        if (targetUnit != null)
+        {
+            targetUnit.ReceiveDamage(damage, owner);
+        }
+        else
+        {
+            targetBuilding.ReceiveDamage(damage, owner);
+        }
         if (registerEnergyOnHit && owner != null)
         {
             UnitBase unit = owner.GetComponent<UnitBase>();