feat(upserver): 保存M2客户端KV迁移至本人统计写检查点

保存独立KV用户服务、固定会话存档与原业务接线，以及C3d资料缓存和C3e本人统计写。
保留原PF/AGG路线、业务公式和时序；榜单读取、好友资料、公告、匹配及首场景闸仍待完成。

验证：ServiceHost两条件各33组646断言；Unity CLI Loop编译0错误269警告。
包含相关方案、评审裁决、测试及状态文档。未操作服务器、正式账号或打包。

Client/Assets/Scripts/UI/PinballUncountable/PinballUncountableManager.cs

@@ -1,4 +1,4 @@
-using asap.core;
+using asap.core;
 using game;
 using GameCore;
 using System.Text;
@@ -7,6 +7,8 @@ namespace PinballUncountable
 {
     public class Manager : IHasMultiplier
     {
+    readonly game.PlayerDataStorage.IPlayerSaveStore saveStore = GContext.container.Resolve<game.PlayerDataStorage.IPlayerSaveStore>();
+
         private int _score, _ticketCount, _hitCountLeft, _hitCountRight;
         private float _inflationRate = 0f;
         private IEventAggregator _eventAggregator = new EventAggregator();
@@ -52,7 +54,7 @@ namespace PinballUncountable
 
         public bool Load()
         {
-            return Deserialize(PlayFabMgr.Instance.GetLocalData(_playfabKey));
+            return Deserialize(saveStore.Read(_playfabKey).ValueOrThrow());
         }
 
         public void InitTest()
@@ -258,7 +260,7 @@ namespace PinballUncountable
         public void SavePlayfab()
         {
             // UnityEngine.Debug.Log("[PinballUncountable]Save Data.");
-            PlayFabMgr.Instance.UpdateUserDataValue(_playfabKey, Serialize());
+            saveStore.Write(_playfabKey, Serialize()).RequireAccepted();
         }
 
         public void SavePlayerPreferences(int multiplier)