```

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/GoldSystem.cs

@@ -0,0 +1,60 @@
+using UnityEngine;
+using UnityEngine.UI;
+
+public class GoldSystem : MonoBehaviour
+{
+    public static GoldSystem Instance { get; private set; }
+
+    [Header("金币配置")]
+    [Min(0)] public int startingGold = 200;
+    [Min(0)] public int maxGold = 9999;
+
+    [Header("UI（可选）")]
+    public Text goldText;
+
+    public int CurrentGold { get; private set; }
+
+    private void Awake()
+    {
+        if (Instance != null && Instance != this)
+        {
+            Destroy(gameObject);
+            return;
+        }
+
+        Instance = this;
+        CurrentGold = startingGold;
+        UpdateUI();
+    }
+
+    public bool TrySpend(int amount)
+    {
+        if (amount < 0 || CurrentGold < amount)
+        {
+            return false;
+        }
+
+        CurrentGold -= amount;
+        UpdateUI();
+        return true;
+    }
+
+    public void AddGold(int amount)
+    {
+        if (amount <= 0)
+        {
+            return;
+        }
+
+        CurrentGold = Mathf.Min(CurrentGold + amount, maxGold);
+        UpdateUI();
+    }
+
+    private void UpdateUI()
+    {
+        if (goldText != null)
+        {
+            goldText.text = CurrentGold.ToString();
+        }
+    }
+}