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/PartnerFishBowl/EventPartnerEntryButton.cs

@@ -1,4 +1,4 @@
-using asap.core;
+using asap.core;
 using TMPro;
 using UnityEngine;
 using UnityEngine.UI;
@@ -10,6 +10,8 @@ using System.Collections.Generic;
 
 public class EventPartnerEntryButton : EventButtonResource
 {
+    game.PlayerDataStorage.IPlayerSaveStore saveStore;
+
     [SerializeField] private TMP_Text _textTimer;
     [SerializeField] private Button _btn;
     [SerializeField] CanvasGroup _homeCanvasGroup;
@@ -18,6 +20,7 @@ public class EventPartnerEntryButton : EventButtonResource
 
     private void Awake()
     {
+        saveStore = GContext.container.Resolve<game.PlayerDataStorage.IPlayerSaveStore>();
         // Debug.Log($"<color=#e23f31>[EventPartner] Icon Awake</color>");
         GContext.OnEvent<EventPartnerDataLoaded>().Subscribe(_ => OnDataLoaded()).AddTo(this);
     }
@@ -107,12 +110,13 @@ public class EventPartnerEntryButton : EventButtonResource
         var _data = GContext.container.Resolve<EventPartnerData>();
         var _playerPreferenceKey = "EventPartnerRecommendCache" + _userService.UserId;
         //Load Player Preferences
-        var pfString = PlayFabMgr.Instance.GetLocalData(EventPartnerPlayfabData.Key);
+        var pfString = saveStore.Read(EventPartnerPlayfabData.Key).ValueOrThrow();
         EventPartnerPlayfabData pfData = EventPartnerPlayfabData.FromString(pfString);
         Debug.Log($"<color=#2d7cee>[EventPartner] Try get response in load data from entrance:</color>");
         var detailRequest = new EventBuildDetailRequest() { eventId = _data.EventId };
         var response = await GContext.container.Resolve<ICustomServerMgr>()
             .EventPartnerRequest<EventBuildDetailResp>(DetailUrl, detailRequest);
+        if (this == null || !saveStore.IsCurrent) return false;
         if (response == null)
         {
             Debug.Log($"<color=red>[EventPartner] No response. </color>");