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/Services/ILocalNotificationService.cs

@@ -37,14 +37,68 @@ public class LocalNotificationService : ILocalNotificationService
 #endif
     bool isInit = false;
     bool initing = false;
+    DefaultSettingService promptSettings;
+    Task initialization;
+    Task opening;
+    internal bool HasKVPromptOwner => promptSettings != null;
     public LocalNotificationService()
     {
         _notificationList = GContext.container.Resolve<cfg.Tables>().TbNotification.DataList;
     }
 
-    public async System.Threading.Tasks.Task Init()
+    internal LocalNotificationService(cfg.Tables tables)
     {
-        if (isInit) return;
+        _notificationList = (tables ?? throw new ArgumentNullException(nameof(tables))).TbNotification.DataList;
+    }
+
+    internal LocalNotificationService(DefaultSettingService settings, cfg.Tables tables)
+    {
+        if (settings == null || !settings.HasKVPromptOwner)
+            throw new ArgumentException("Fixed KV settings required.", nameof(settings));
+        promptSettings = settings;
+        _notificationList = (tables ?? throw new ArgumentNullException(nameof(tables))).TbNotification.DataList;
+        RequirePromptOwner();
+    }
+
+    internal void RequirePromptOwner(ISettingService expected = null)
+    {
+        if (expected != null && (promptSettings != null || expected is DefaultSettingService setting && setting.HasKVPromptOwner)
+            && !ReferenceEquals(expected, promptSettings))
+            throw DefaultSettingService.PromptFailure("ShowNotice: notification/settings owner mismatch.");
+        promptSettings?.RequirePromptOwner();
+    }
+
+    internal void PreflightFormalPromptSettings(DefaultSettingService settings)
+    {
+        if (settings == null || !isInit || initing ||
+            (initialization != null && !initialization.IsCompleted) ||
+            (opening != null && !opening.IsCompleted) ||
+            (promptSettings != null && !ReferenceEquals(promptSettings, settings)))
+            throw DefaultSettingService.PromptFailure("ShowNotice: notification handoff is not idle.");
+    }
+    internal void BindFormalPromptSettings(DefaultSettingService settings)
+    {
+        PreflightFormalPromptSettings(settings);
+        if (!settings.HasKVPromptOwner)
+            throw DefaultSettingService.PromptFailure("ShowNotice: notification owner not handed off.");
+        settings.RequirePromptOwner();
+        if (promptSettings == null) promptSettings = settings;
+        RequirePromptOwner(settings);
+    }
+    internal bool HasFormalPromptSettings(DefaultSettingService settings) =>
+        ReferenceEquals(promptSettings, settings);
+
+    public Task Init()
+    {
+        RequirePromptOwner();
+        if (isInit) return Task.CompletedTask;
+        if (initialization != null && !initialization.IsCompleted) return initialization;
+        return initialization = InitCoreAsync();
+    }
+
+    async Task InitCoreAsync()
+    {
+        RequirePromptOwner();
 #if UNITY_EDITOR
         await System.Threading.Tasks.Task.Yield();
 #else
@@ -59,9 +113,11 @@ public class LocalNotificationService : ILocalNotificationService
         Debug.Log("[LocalNotificationService::Init] Channel Inited");
         
         await NotificationCenter.RequestPermission();
+        RequirePromptOwner();
         ScheduleDefaultNotification();
         GContext.OnEvent<EventRankData>().Subscribe(ScheduleRankNotification);
 #endif
+        RequirePromptOwner();
         isInit = true;
     }
 
@@ -86,14 +142,36 @@ public class LocalNotificationService : ILocalNotificationService
 
     public async void OpenSettings()
     {
-        if (initing) return;
+        try { await OpenSettingsAsync(); }
+        catch (Exception ex) { game.DefaultSettingService.LogPromptFailure(ex); }
+    }
+
+    internal Task OpenSettingsAsync()
+    {
+        if (promptSettings == null && GContext.container.Resolve<ISettingService>() is DefaultSettingService pending)
+            pending.RequirePromptOwner();
+        RequirePromptOwner();
+        if (initing && opening == null)
+            throw DefaultSettingService.PromptFailure("ShowNotice: reentrant permission request.");
+        if (opening != null && !opening.IsCompleted) return opening;
+        return opening = OpenSettingsCoreAsync();
+    }
+
+    async Task OpenSettingsCoreAsync()
+    {
+        ISettingService settings = promptSettings ?? GContext.container.Resolve<ISettingService>();
+        RequirePromptOwner(settings);
+        (settings as DefaultSettingService)?.RequirePromptOwner();
         initing = true;
-        if (!isInit)
-            await Init();
-        else
-            NotificationCenter.OpenNotificationSettings();
-        GContext.container.Resolve<ISettingService>().ShowNotice = true;
-        initing = false;
+        try
+        {
+            if (!isInit) await Init();
+            else NotificationCenter.OpenNotificationSettings();
+            RequirePromptOwner(settings);
+            (settings as DefaultSettingService)?.RequirePromptOwner();
+            settings.ShowNotice = true;
+        }
+        finally { initing = false; }
     }
 
     public void ScheduleDailyNotification(int notificationID, DateTime fireTime, string title, string text)
@@ -150,6 +228,8 @@ public class LocalNotificationService : ILocalNotificationService
 
     private void ScheduleRankNotification(EventRankData evt)
     {
+        try { RequirePromptOwner(); }
+        catch (InvalidOperationException ex) { Debug.LogError(ex.Message); return; }
         if (rankNotifyScheduled || !IsNoticeOpen || !isInit) return;
 
         Debug.Log("[LocalNotificationService::SendNotification]  RankEvent");
@@ -170,4 +250,4 @@ public class LocalNotificationService : ILocalNotificationService
         rankNotifyScheduled = true;
         Debug.Log("[LocalNotificationService::SendRankEventNotification] ");
     }
-}
+}