```

feat(player): 添加玩家阵型保存功能

新增savedFormation字段用于存储玩家的阵型配置，
包括角色ID列表和对应的格子索引位置信息。
```

Assets/Script/FormationManager.cs

@@ -310,17 +310,67 @@ public class FormationManager : MonoBehaviour
         return -1;
     }
 
-    // ===== 进入战斗 =====
+    // ===== 保存阵型 =====
 
     public void StartBattle()
     {
         FillUnplacedWithDefault();
-        SaveFormation();
+        SaveFormationToJson();
+    }
 
-        if (!string.IsNullOrEmpty(battleSceneName))
+    private void SaveFormationToJson()
+    {
+        int count = HeroCount;
+        var characterIds = new string[count];
+        var cells = new int[count];
+
+        // 初始化数组
+        for (int i = 0; i < count; i++)
         {
-            SceneManager.LoadScene(battleSceneName);
+            HeroEntry entry = GetHero(i);
+            characterIds[i] = entry != null ? GetCharacterId(entry.prefab) : "";
+            cells[i] = -1;
         }
+
+        // 填充已放置的格位
+        foreach (var pair in placed)
+        {
+            int heroIndex = pair.Value.heroIndex;
+            if (heroIndex >= 0 && heroIndex < count)
+            {
+                cells[heroIndex] = pair.Key;
+            }
+        }
+
+        // 保存到 PlayerData.json
+        if (PlayerDataManager.Instance != null)
+        {
+            PlayerDataManager.Instance.SaveFormation(characterIds, cells);
+        }
+        else
+        {
+            Debug.LogError("PlayerDataManager.Instance 未找到，无法保存阵型");
+        }
+    }
+
+    /// <summary>
+    /// 根据 Prefab 获取 characterId
+    /// </summary>
+    private string GetCharacterId(GameObject prefab)
+    {
+        if (prefab == null) return "";
+        
+        // 查找对应的 CharacterData
+        var allData = Resources.LoadAll<CharacterData>("Data");
+        foreach (var data in allData)
+        {
+            if (data.unitPrefab == prefab)
+            {
+                return data.characterId;
+            }
+        }
+        
+        return "";
     }
 
     private void SaveFormation()