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。

CodexOutput/upserver/B3BatchMigration/M2/C2d修改前快照/074-QuitAct.cs.txt

@@ -0,0 +1,103 @@
+using System.Threading.Tasks;
+using asap.core;
+using Game;
+using GameCore;
+using UnityEngine;
+
+namespace game
+{
+    public class QuitAct : AGameAct
+    {
+        [Inject]
+        public IConfig config { get; set; }
+
+        [Inject]
+        public IRTService rtService { get; set; }
+
+        [Inject]
+        public IUserService userService { get; set; }
+
+        [Inject]
+        public SoundMgr soundMgr { get; set; }
+
+        [Inject]
+        public IAdsService adsService { get; set; }
+
+#if AGG
+        [Inject]
+        public HeartBeat heartBeat {get; set;}
+#endif
+
+        protected override void OnDestroy() { }
+
+        public string[] DestoryRoot;
+
+        public override async Task<bool> StartAsync()
+        {
+#if UNITY_EDITOR && !SERVICE_HOST
+            if(game.PlayerDataStorage.PlayerKVGameplayLoop.Enabled) _=game.PlayerDataStorage.PlayerKVGameplayLoop.CloseAsync();
+#endif
+            if(userService is PlayerDataStorage.IKVUserLifecycle closingKVUser) _=closingKVUser.CloseKVForValidationAsync();
+            // Invalidate identity before any await can allow old login/HTTP callbacks to resume.
+            if (QuitStage.Logout)
+            {
+                QuitStage.Logout = false;
+                try { userService.Logout(); }
+                catch (System.Exception ex) { Debug.LogException(ex); }
+            }
+            LoadingScreen.Hide();
+            GameObject.Destroy(UIManager.Instance.gameObject);
+
+            config.Rest();
+
+            try { await rtService.ReleaseAsync(); }
+            catch (System.Exception ex) { Debug.LogException(ex); }
+
+            // Observation is bounded; the process registry still owns any unfinished close.
+#if UNITY_EDITOR && !SERVICE_HOST
+            if(game.PlayerDataStorage.PlayerKVGameplayLoop.Enabled) await PlayerDataStorage.PlayerKVShutdownRegistry.Process.ObserveAsync(5000);
+            else
+#endif
+            if(userService is PlayerDataStorage.IKVUserLifecycle kvUser) await kvUser.ObserveKVQuitAsync();
+
+            adsService.Release();
+
+            GameEventMgr.Instance.Clear();
+
+#if AGG
+            heartBeat?.Dispose();
+#endif
+            GameCore.Timer.CancelAllRegisteredTimers();
+            GameCore.Timer.Destroy();
+
+            soundMgr.Release();
+            RedPointManager.Instance.Init();
+            return await base.StartAsync();
+        }
+
+        protected override void OnStarted()
+        {
+            RootCtx.DestoryRootCtx();
+            for (int i = 0; i < DestoryRoot.Length; i++)
+            {
+                GameObject go = GameObject.Find(DestoryRoot[i]);
+                if (go != null)
+                {
+                    GameObject.DestroyImmediate(go);
+                }
+            }
+            base.OnStarted();
+#if UNITY_EDITOR && !SERVICE_HOST
+            if (game.PlayerDataStorage.PlayerKVGameplayLoop.Enabled)
+            {
+                var status = PlayerDataStorage.PlayerKVShutdownRegistry.Process.Status;
+                Debug.Log("KV loop ended; restart Unity before another run. Shutdown: " + status);
+                if (status == PlayerDataStorage.PlayerKVShutdownStatus.Ready)
+                    UnityEditor.EditorApplication.isPlaying = false;
+                return; // Keep the process barrier; never return this run to PreBoot.
+            }
+#endif
+            Invoke("Unload", 2f);
+        }
+    }
+}