diff --git a/My project/Assets/FlowScope/Samples/MainMenuP0/Scripts/GameBootstrap.cs b/My project/Assets/FlowScope/Samples/MainMenuP0/Scripts/GameBootstrap.cs
index 32526a6..9ab9e7c 100644
--- a/My project/Assets/FlowScope/Samples/MainMenuP0/Scripts/GameBootstrap.cs	
+++ b/My project/Assets/FlowScope/Samples/MainMenuP0/Scripts/GameBootstrap.cs	
@@ -25,8 +25,15 @@ namespace FlowScope.Samples.MainMenuP0
         private ContainerType _root;
         private GameFlow _gameFlow;
         private ISaveService _saveService;
+        private UIPreloadService _preloadService;
+        private SampleResourceBackend _sampleBackend;
         private PlayerData _playerData;
         private CancellationTokenSource _lifetime;
+        private bool _started;
+        private bool _shutdown;
+
+        public int ReleasedResourceCount => _sampleBackend?.ReleaseCount ?? 0;
+        public bool IsShutdown => _shutdown;
 
         private async void Awake()
         {
@@ -36,35 +43,61 @@ namespace FlowScope.Samples.MainMenuP0
 
         public async Task StartupAsync(CancellationToken cancellationToken)
         {
+            if (_started)
+            {
+                return;
+            }
+
+            _started = true;
+            _shutdown = false;
             _root = new ContainerType();
             _gameFlow = new GameFlow();
 
-            var resources = new SampleResourceService();
-            resources.Register(
+            _sampleBackend = new SampleResourceBackend();
+            _sampleBackend.Register(
                 "FlowScope/Samples/MainMenuP0/MainMenuPanel",
                 ResolveMainMenuPanelPrefab().gameObject);
+            var resources = new ResourceService(_sampleBackend);
+            _preloadService = new UIPreloadService(resources);
+            var uiManager = new UIManager(resources, _preloadService);
+            uiManager.RegisterLayer("hud", ResolveHudCanvas(), 0, PanelStrategy.Destroy);
+            var screenNavigator = new UIScreenNavigator(uiManager);
 
+            var migrations = new SaveMigrationRegistry();
+            migrations.Register(new PlayerDataV1ToV2Migration());
             _saveService = new SaveService(
                 new FileSaveStorage(),
-                new JsonSaveSerializer());
+                new JsonSaveSerializer(2, migrations));
             _playerData = await _saveService.LoadAsync(
                 SaveKey,
                 new PlayerData { Gold = new R3.ReactiveProperty<int>(defaultGold) },
                 cancellationToken);
 
-            var uiManager = new UIManager(resources);
-            uiManager.RegisterLayer("hud", ResolveHudCanvas(), 0, PanelStrategy.Cache);
+            await _preloadService.PreloadAsync<MainMenuPanel>(cancellationToken);
 
             var audioService = gameObject.AddComponent<AudioService>().Initialize(resources);
             _root.RegisterInstance(_root);
             _root.RegisterInstance<IConfigProvider>(
-                new JsonConfigProvider(Array.Empty<JsonConfigProvider.ConfigMapping>()));
+                new JsonConfigProvider(new[]
+                {
+                    JsonConfigProvider.Mapping<SampleMenuConfig>(
+                        "main_menu.json",
+                        new InMemoryConfigSource(
+                            new Dictionary<string, string>
+                            {
+                                { "main_menu.json", "[{\"Id\":1,\"Title\":\"Main Menu P1\"}]" }
+                            },
+                            "MainMenuP0"),
+                        new JsonConfigParser())
+                }));
             _root.RegisterInstance<IResourceService>(resources);
             _root.RegisterInstance<ISaveService>(_saveService);
             _root.RegisterInstance<IAudioService>(audioService);
             _root.RegisterInstance(uiManager);
+            _root.RegisterInstance<IUIPreloadService>(_preloadService);
+            _root.RegisterInstance<IUIScreenNavigator>(screenNavigator);
             _root.RegisterInstance(_playerData);
-            _root.RegisterFactory(_ => new MainMenuFeature(uiManager, _playerData));
+            _root.RegisterFactory(_ => new MainMenuFeature(screenNavigator, _playerData));
 
             await _gameFlow.StartupAsync<MainMenuFeature>(_root, cancellationToken);
         }
@@ -80,6 +113,9 @@ namespace FlowScope.Samples.MainMenuP0
             {
                 await _gameFlow.ShutdownAsync(cancellationToken);
             }
+
+            _preloadService?.ReleaseAll();
+            _shutdown = true;
         }
 
         private async void OnApplicationQuit()
@@ -137,16 +173,19 @@ namespace FlowScope.Samples.MainMenuP0
             return mainMenuPanelPrefab;
         }
 
-        private sealed class SampleResourceService : IResourceService
+        private sealed class SampleResourceBackend : IResourceBackend
         {
             private readonly Dictionary<string, GameObject> _prefabs = new();
 
+            public string Name => "MainMenuP0Sample";
+            public int ReleaseCount { get; private set; }
+
             public void Register(string key, GameObject prefab)
             {
                 _prefabs[key] = prefab;
             }
 
-            public Task<IResourceHandle<T>> LoadAsync<T>(
+            public Task<T> LoadAsync<T>(
                 string key,
                 CancellationToken cancellationToken)
                 where T : class
@@ -155,36 +194,32 @@ namespace FlowScope.Samples.MainMenuP0
                 if (typeof(T) == typeof(GameObject) &&
                     _prefabs.TryGetValue(key, out var prefab))
                 {
-                    return Task.FromResult<IResourceHandle<T>>(
-                        new SampleResourceHandle<T>(key, prefab as T));
+                    return Task.FromResult(prefab as T);
                 }
 
                 throw new InvalidOperationException($"Sample resource is not registered: {key}");
             }
 
-            public IResourceGroup CreateGroup()
+            public void Release<T>(string key, T asset)
+                where T : class
             {
-                return new ResourceGroup();
+                ReleaseCount++;
             }
         }
 
-        private sealed class SampleResourceHandle<T> : IResourceHandle<T> where T : class
+        private sealed class SampleMenuConfig : IConfigRow
         {
-            public SampleResourceHandle(string key, T asset)
-            {
-                Key = key;
-                Asset = asset;
-            }
+            public int Id { get; set; }
+            public string Title { get; set; }
+        }
 
-            public string Key { get; }
-            public T Asset { get; private set; }
-            public bool IsDisposed { get; private set; }
+        private sealed class PlayerDataV1ToV2Migration : ISaveMigration
+        {
+            public string Key => typeof(PlayerData).FullName;
+            public int FromVersion => 1;
+            public int ToVersion => 2;
 
-            public void Dispose()
-            {
-                IsDisposed = true;
-                Asset = null;
-            }
+            public string Migrate(string json) => json;
         }
     }
 }
diff --git a/My project/Assets/FlowScope/Samples/MainMenuP0/Scripts/MainMenuFeature.cs b/My project/Assets/FlowScope/Samples/MainMenuP0/Scripts/MainMenuFeature.cs
index 207f714..61248ad 100644
--- a/My project/Assets/FlowScope/Samples/MainMenuP0/Scripts/MainMenuFeature.cs	
+++ b/My project/Assets/FlowScope/Samples/MainMenuP0/Scripts/MainMenuFeature.cs	
@@ -6,13 +6,13 @@ namespace FlowScope.Samples.MainMenuP0
 {
     public sealed class MainMenuFeature : FeatureBase
     {
-        private readonly UIManager _uiManager;
+        private readonly IUIScreenNavigator _screenNavigator;
         private readonly PlayerData _playerData;
         private MainMenuViewModel _viewModel;
 
-        public MainMenuFeature(UIManager uiManager, PlayerData playerData)
+        public MainMenuFeature(IUIScreenNavigator screenNavigator, PlayerData playerData)
         {
-            _uiManager = uiManager;
+            _screenNavigator = screenNavigator;
             _playerData = playerData;
         }
 
@@ -25,14 +25,14 @@ namespace FlowScope.Samples.MainMenuP0
 
         public override async Task EnterAsync(FeatureContext context)
         {
-            await _uiManager.OpenAsync<MainMenuPanel, MainMenuViewModel>(
+            await _screenNavigator.PushAsync<MainMenuPanel, MainMenuViewModel>(
                 _viewModel,
                 context.CancellationToken);
         }
 
         public override Task ExitAsync(FeatureContext context)
         {
-            _uiManager.Close<MainMenuPanel>();
+            _screenNavigator.Clear();
             return base.ExitAsync(context);
         }
 
diff --git a/My project/Assets/FlowScope/Samples/MainMenuP0/Scripts/MainMenuPanel.cs b/My project/Assets/FlowScope/Samples/MainMenuP0/Scripts/MainMenuPanel.cs
index 629d3a5..3cd3a5f 100644
--- a/My project/Assets/FlowScope/Samples/MainMenuP0/Scripts/MainMenuPanel.cs	
+++ b/My project/Assets/FlowScope/Samples/MainMenuP0/Scripts/MainMenuPanel.cs	
@@ -4,7 +4,7 @@ using UnityEngine.UI;
 
 namespace FlowScope.Samples.MainMenuP0
 {
-    [UIPanel("hud", "FlowScope/Samples/MainMenuP0/MainMenuPanel", PanelStrategy.Cache)]
+    [UIPanel("hud", "FlowScope/Samples/MainMenuP0/MainMenuPanel")]
     public sealed class MainMenuPanel : UIPanelBase<MainMenuViewModel>
     {
         [SerializeField] private Text goldText;
diff --git a/My project/Assets/FlowScope/Tests/PlayMode/Samples/MainMenuP0Tests.cs b/My project/Assets/FlowScope/Tests/PlayMode/Samples/MainMenuP0Tests.cs
index cc89af8..1bb9539 100644
--- a/My project/Assets/FlowScope/Tests/PlayMode/Samples/MainMenuP0Tests.cs	
+++ b/My project/Assets/FlowScope/Tests/PlayMode/Samples/MainMenuP0Tests.cs	
@@ -27,13 +27,11 @@ namespace FlowScope.Tests.PlayMode.Samples
         }
 
         [UnityTest]
-        public IEnumerator Bootstrap_StartClickShutdownAndRestart_RestoresSavedGold()
+        public IEnumerator Bootstrap_StartsAndOpensVisibleMainMenuPanel()
         {
             DeleteSampleSave();
-            var root = new GameObject("bootstrap-test");
-            root.SetActive(false);
+            var root = CreateInactiveBootstrap("bootstrap-visible-test", out var bootstrap);
 
-            var bootstrap = root.AddComponent<GameBootstrap>();
             yield return AwaitTask(bootstrap.StartupAsync(CancellationToken.None));
 
             var panel = Object.FindObjectOfType<MainMenuPanel>(true);
@@ -42,17 +40,49 @@ namespace FlowScope.Tests.PlayMode.Samples
             var button = panel.GetComponentInChildren<Button>(true);
             Assert.That(label, Is.Not.Null);
             Assert.That(button, Is.Not.Null);
+            Assert.That(panel.gameObject.activeSelf, Is.True);
             Assert.That(label.text, Is.EqualTo("0"));
 
+            yield return AwaitTask(bootstrap.ShutdownAsync(CancellationToken.None));
+            Object.DestroyImmediate(root);
+            DeleteSampleSave();
+            LogAssert.NoUnexpectedReceived();
+        }
+
+        [UnityTest]
+        public IEnumerator ClickIncrement_UpdatesGoldTextImmediately()
+        {
+            DeleteSampleSave();
+            var root = CreateInactiveBootstrap("bootstrap-click-test", out var bootstrap);
+            yield return AwaitTask(bootstrap.StartupAsync(CancellationToken.None));
+            var panel = Object.FindObjectOfType<MainMenuPanel>(true);
+            var label = panel.GetComponentInChildren<Text>(true);
+            var button = panel.GetComponentInChildren<Button>(true);
+
             button.onClick.Invoke();
+
             Assert.That(label.text, Is.EqualTo("1"));
 
             yield return AwaitTask(bootstrap.ShutdownAsync(CancellationToken.None));
             Object.DestroyImmediate(root);
+            DeleteSampleSave();
+            LogAssert.NoUnexpectedReceived();
+        }
 
-            var restartRoot = new GameObject("bootstrap-restart-test");
-            restartRoot.SetActive(false);
-            var restartedBootstrap = restartRoot.AddComponent<GameBootstrap>();
+        [UnityTest]
+        public IEnumerator ShutdownAndRestart_RestoresSavedGold()
+        {
+            DeleteSampleSave();
+            var root = CreateInactiveBootstrap("bootstrap-save-test", out var bootstrap);
+            yield return AwaitTask(bootstrap.StartupAsync(CancellationToken.None));
+            var panel = Object.FindObjectOfType<MainMenuPanel>(true);
+            var button = panel.GetComponentInChildren<Button>(true);
+
+            button.onClick.Invoke();
+            yield return AwaitTask(bootstrap.ShutdownAsync(CancellationToken.None));
+            Object.DestroyImmediate(root);
+
+            var restartRoot = CreateInactiveBootstrap("bootstrap-restart-test", out var restartedBootstrap);
             yield return AwaitTask(restartedBootstrap.StartupAsync(CancellationToken.None));
 
             var restoredPanel = Object.FindObjectOfType<MainMenuPanel>(true);
@@ -62,6 +92,27 @@ namespace FlowScope.Tests.PlayMode.Samples
             yield return AwaitTask(restartedBootstrap.ShutdownAsync(CancellationToken.None));
             Object.DestroyImmediate(restartRoot);
             DeleteSampleSave();
+            LogAssert.NoUnexpectedReceived();
+        }
+
+        [UnityTest]
+        public IEnumerator Shutdown_ReleasesPreloadedResourcesAndSubscriptions()
+        {
+            DeleteSampleSave();
+            var root = CreateInactiveBootstrap("bootstrap-release-test", out var bootstrap);
+            yield return AwaitTask(bootstrap.StartupAsync(CancellationToken.None));
+            var panel = Object.FindObjectOfType<MainMenuPanel>(true);
+
+            yield return AwaitTask(bootstrap.ShutdownAsync(CancellationToken.None));
+            yield return null;
+
+            Assert.That(bootstrap.IsShutdown, Is.True);
+            Assert.That(bootstrap.ReleasedResourceCount, Is.EqualTo(1));
+            Assert.That(panel == null, Is.True);
+
+            Object.DestroyImmediate(root);
+            DeleteSampleSave();
+            LogAssert.NoUnexpectedReceived();
         }
 
         private static IEnumerator AwaitTask(Task task)
@@ -82,6 +133,14 @@ namespace FlowScope.Tests.PlayMode.Samples
             }
         }
 
+        private static GameObject CreateInactiveBootstrap(string name, out GameBootstrap bootstrap)
+        {
+            var root = new GameObject(name);
+            root.SetActive(false);
+            bootstrap = root.AddComponent<GameBootstrap>();
+            return root;
+        }
+
         private static void DeleteSampleSave()
         {
             var path = Path.Combine(
diff --git a/docs/guides/flowscope-runtime-usage.md b/docs/guides/flowscope-runtime-usage.md
new file mode 100644
index 0000000..ceb29e5
--- /dev/null
+++ b/docs/guides/flowscope-runtime-usage.md
@@ -0,0 +1,55 @@
+# FlowScope Runtime 使用规范
+
+## Bootstrap
+
+Bootstrap 负责组合运行时依赖，而不是把业务流程写进场景脚本。推荐顺序是创建根 `Container`、注册 Config/Resource/Save/UI/Audio 等服务、注册首个 Feature 的工厂，最后调用 `GameFlow.StartupAsync<TInitialFeature>`。
+
+Bootstrap 必须持有生命周期 `CancellationToken`，退出时先保存必要状态，再调用 `GameFlow.ShutdownAsync`，最后释放预加载资源、音频句柄或其他根级缓存。
+
+## Container 注册规则
+
+容器注册应显式、可读、可追踪。稳定服务使用 `RegisterInstance`，带运行时参数或 Feature 私有依赖使用 `RegisterFactory`。不要依赖类型扫描或名称约定来猜测注册关系。
+
+Feature 只从自己的 scope 解析依赖。跨 Feature 的共享服务放在 root container，Feature 内部临时对象放在 Feature scope，并随 `FeatureContext` 一起释放。
+
+## Feature 生命周期
+
+`LoadAsync` 只准备数据、ViewModel 和轻量状态；`EnterAsync` 打开 UI、订阅输入或启动表现；`ExitAsync` 必须关闭本 Feature 打开的 UI 并释放订阅；`Dispose` 只做最后的托底清理。
+
+不要在 `Dispose` 中启动新的异步工作。需要异步关闭的行为放在 `ExitAsync`。
+
+## 资源所有权
+
+P1 的资源入口是 `ResourceService`，后端由 `IResourceBackend` 适配。业务层只持有 `IResourceHandle<T>` 或 `IResourceGroup`，不直接调用 Addressables 或样例 backend。
+
+谁创建 handle，谁负责释放。预加载资源由 `UIPreloadService` 持有，UI 实例关闭时不释放预加载 handle，Bootstrap 或上层流程退出时调用 `Release<TPanel>` 或 `ReleaseAll`。
+
+## UI 路径和层级
+
+Panel 类型必须声明 `UIPanelAttribute`。优先显式填写资源路径，例如 `FlowScope/Samples/MainMenuP0/MainMenuPanel`；未填写时才使用 `UI/{PanelNameWithoutSuffix}/Prefab` 约定。
+
+`UIManager` 维护层内 LIFO。`UIScreenNavigator` 只管理它自己 push 的页面，`GoBack` 保留最后一个页面，`Clear` 清空导航器打开的页面。
+
+## 配置 DTO 约束
+
+配置行实现 `IConfigRow`，`Id` 在同一表内必须唯一。DTO 应保持简单字段或属性，不把运行时对象、Unity 组件、服务实例放进配置。
+
+配置加载通过 `IConfigSource` 读取文本，通过 `IConfigParser` 解析。生产环境可接文件或远端来源，测试和样例可使用 `InMemoryConfigSource`。
+
+## 存档版本迁移
+
+`JsonSaveSerializer` 的 `currentVersion` 大于 1 时会写入版本 envelope。旧版裸 JSON 被视为版本 1，并通过 `SaveMigrationRegistry` 迁移到当前版本。
+
+每个迁移实现 `ISaveMigration`，`Key` 默认使用存档 DTO 类型全名，迁移链必须逐版本连续，例如 1 -> 2 -> 3。
+
+## Addressables 后端接入
+
+生产资源后端使用 `FlowScope.Addressables.AddressablesResourceBackend`。项目需要在 `Packages/manifest.json` 中包含 `com.unity.addressables`，并让 Unity 完成包解析后再运行 PlayMode 全量测试。
+
+业务代码不直接依赖 Addressables API。需要替换后端时，只调整 Bootstrap 或平台装配层的 `IResourceBackend` 注册。
+
+## 测试建议
+
+窄单元测试优先覆盖接口契约：重复加载共享、取消不释放他人 handle、配置重复 ID、存档迁移缺链、UI LIFO 和预加载释放。
+
+样例验收至少覆盖启动可见、按钮即时更新、关闭保存、重启恢复、资源释放。Unity Test Runner 全绿前，不要宣布生产化验收完成。
diff --git a/docs/guides/main-menu-p1-sample.md b/docs/guides/main-menu-p1-sample.md
new file mode 100644
index 0000000..917a094
--- /dev/null
+++ b/docs/guides/main-menu-p1-sample.md
@@ -0,0 +1,33 @@
+# MainMenuP0 P1 样例验收
+
+## 打开场景
+
+在 Unity 中打开：
+
+```text
+My project/Assets/FlowScope/Samples/MainMenuP0/Scenes/MainMenuP0.unity
+```
+
+进入 Play Mode 后，`GameBootstrap` 会注册 P1 运行时服务，预加载 `MainMenuPanel`，并启动 `MainMenuFeature`。
+
+## 预期画面
+
+画面中应出现主菜单面板、Gold 数字文本和一个递增按钮。若场景或 prefab 引用缺失，样例仍会创建运行时 fallback UI，但人工验收应优先检查场景和 prefab 引用是否正确。
+
+## Gold 递增
+
+按钮点击调用 `MainMenuViewModel.IncrementGold`，立即修改 `PlayerData.Gold`，并通过面板订阅同步刷新 Gold 文本。点击一次后，文本应从 `0` 变为 `1`。
+
+## 保存与恢复
+
+`ShutdownAsync` 会把 `PlayerData` 写入 `main-menu-player` 存档。再次启动样例时，`SaveService` 会读取同一 key 并恢复 Gold。
+
+P1 样例使用 `JsonSaveSerializer` 版本 envelope；旧版裸 JSON 会通过 no-op 的 1 -> 2 迁移链继续读取。
+
+## 资源释放
+
+样例资源通过 `ResourceService` 和样例 `IResourceBackend` 加载。`UIPreloadService` 持有预加载 handle；Feature 退出时关闭面板实例，Bootstrap 关闭时调用 `ReleaseAll` 释放预加载资源。
+
+## Console 输出
+
+验收期间不应出现未预期的 Error 或 Exception。Unity 引用版本冲突警告如果只出现在外部 `dotnet build` 中，属于当前 Unity 生成项目的已知警告，不作为样例失败条件。