diff --git a/docs/Development-Plan.md b/docs/Development-Plan.md
index 9634ee0..5540745 100644
--- a/docs/Development-Plan.md
+++ b/docs/Development-Plan.md
@@ -359,16 +359,16 @@ Contract       Design          Plan（本文档）
 
 ##### 2.B Native→H5 反向 callback
 
-- [ ] **2.8** `Source/Device/DeviceInfo.swift`：6 字段 snapshot
-  - `getphoneInfo` 收到调用后 → `bridge.call("getphoneinfo", data: ...)` 反向
-- [ ] **2.9** `Source/Device/BatteryMonitor.swift`：监听 `UIDeviceBatteryLevelDidChangeNotification`
-  - 触发 → `bridge.call("getBattery", data: .string("%.2f"))`
-- [ ] **2.10** `Source/Device/NetworkMonitor.swift`：`NWPathMonitor` 包装
-  - 状态变化 → `bridge.call("getnetwork", data: .string("1"/"2"/"3"))`
-- [ ] **2.11** `Source/Device/AppLifecycleObserver.swift`：监听 SceneDelegate 前后台通知
-  - → `bridge.call("appservice", data: .string("1"=后台 / "2"=前台))`
-- [ ] **2.12** `Source/WebView/ShakeDetector.swift`：在 `WebContainerViewController` 重写 `motionEnded:` 
-  - → `bridge.call("shakeEnd", data: nil)`（仅 `canshake=YES` 时触发）
+- [x] **2.8** `Source/Bridge/Handlers/DeviceInfoHandler.swift`：DeviceInfoSnapshot 6 字段（Phase 2.5 一并完成）
+  - `getphoneInfo` 收到 → `bridge.call("getphoneinfo", data: 表 A 6 字段)` 反向
+- [x] **2.9** `Source/Resource/BatteryMonitor.swift`：监听 `UIDevice.batteryLevelDidChangeNotification`
+  - 触发 → 重写 `app_battery.js` + `bridge.call("getBattery", data: .string("%.2f", level))`
+- [x] **2.10** `Source/Resource/NetworkMonitor.swift`：NWPathMonitor 包装（Phase 1 已建）
+  - 状态变化 → 重写 `app_network.js` + `bridge.call("getnetwork", data: .string("1"/"2"/"3"))`
+- [x] **2.11** `Source/Resource/AppLifecycleObserver.swift`：监听 `UIApplication.didEnterBackgroundNotification` / `willEnterForegroundNotification`
+  - 后台 → `bridge.call("appservice", data: .string("1"))`；前台 → `"2"`
+- [x] **2.12** ShakeDetector 集成在 `Source/Bridge/Handlers/ShakeHandler.swift`（Phase 2.3 一并完成）
+  - `WebContainerViewController.motionEnded(_:with:)` 转发 → `bridge.call("shakeEnd", data: nil)`（仅 `canShake=YES` 时触发）
 
 ##### 2.C 外部订阅生命周期
 
diff --git a/ylgamehall/Source/Resource/AppLifecycleObserver.swift b/ylgamehall/Source/Resource/AppLifecycleObserver.swift
new file mode 100644
index 0000000..39ff0fb
--- /dev/null
+++ b/ylgamehall/Source/Resource/AppLifecycleObserver.swift
@@ -0,0 +1,49 @@
+//
+//  AppLifecycleObserver.swift
+//  ylgamehall
+//
+//  监听 UIApplication 前/后台切换通知，提供 onBackground / onForeground 钩子。
+//
+//  契约：docs/H5-Native-Contract.md §3.2 ［4］appservice 反向 callback
+//    "1" = 进入后台 / "2" = 回到前台（命名错位沿用历史）
+//  Phase 2.11
+//
+
+import UIKit
+
+@MainActor
+public final class AppLifecycleObserver {
+
+    public static let shared = AppLifecycleObserver()
+
+    public var onBackground: (@MainActor () -> Void)?
+    public var onForeground: (@MainActor () -> Void)?
+
+    private var started = false
+
+    public init() {}
+
+    public func start() {
+        guard !started else { return }
+        started = true
+        let nc = NotificationCenter.default
+        nc.addObserver(
+            forName: UIApplication.didEnterBackgroundNotification,
+            object: nil,
+            queue: .main
+        ) { [weak self] _ in
+            MainActor.assumeIsolated {
+                self?.onBackground?()
+            }
+        }
+        nc.addObserver(
+            forName: UIApplication.willEnterForegroundNotification,
+            object: nil,
+            queue: .main
+        ) { [weak self] _ in
+            MainActor.assumeIsolated {
+                self?.onForeground?()
+            }
+        }
+    }
+}
diff --git a/ylgamehall/Source/Resource/BatteryMonitor.swift b/ylgamehall/Source/Resource/BatteryMonitor.swift
new file mode 100644
index 0000000..591e021
--- /dev/null
+++ b/ylgamehall/Source/Resource/BatteryMonitor.swift
@@ -0,0 +1,49 @@
+//
+//  BatteryMonitor.swift
+//  ylgamehall
+//
+//  UIDevice.batteryLevelDidChangeNotification 的最简 wrap：
+//  提供 currentLevel 同步快照 + onChange 主线程回调。
+//
+//  契约：docs/H5-Native-Contract.md §3.2 ［2］getBattery 反向 callback
+//  Phase 2.9
+//
+
+import UIKit
+
+@MainActor
+public final class BatteryMonitor {
+
+    public static let shared = BatteryMonitor()
+
+    /// 当前电量 0.0…1.0；模拟器无电池硬件返回 -1，BatteryMonitor.start() 后兜底为 0
+    public private(set) var currentLevel: Float = 0
+
+    /// 电量变化回调（主线程触发）
+    public var onChange: (@MainActor (Float) -> Void)?
+
+    private var started = false
+
+    public init() {}
+
+    public func start() {
+        guard !started else { return }
+        started = true
+        UIDevice.current.isBatteryMonitoringEnabled = true
+        currentLevel = max(UIDevice.current.batteryLevel, 0)
+        NotificationCenter.default.addObserver(
+            forName: UIDevice.batteryLevelDidChangeNotification,
+            object: nil,
+            queue: .main
+        ) { [weak self] _ in
+            // forName: + queue: .main 的 block 闭包在 main 队列触发；
+            // 用 MainActor.assumeIsolated 把它桥到 main actor 隔离
+            MainActor.assumeIsolated {
+                guard let self else { return }
+                let level = max(UIDevice.current.batteryLevel, 0)
+                self.currentLevel = level
+                self.onChange?(level)
+            }
+        }
+    }
+}
diff --git a/ylgamehall/Source/WebView/WebContainerViewController.swift b/ylgamehall/Source/WebView/WebContainerViewController.swift
index e97b6c0..00fc369 100644
--- a/ylgamehall/Source/WebView/WebContainerViewController.swift
+++ b/ylgamehall/Source/WebView/WebContainerViewController.swift
@@ -216,8 +216,10 @@ public final class WebContainerViewController: UIViewController {
         )
     }
 
-    /// 写 4 个 app_*.js 文件，并挂钩 battery / network 变化的重写监听。
-    /// 与原 msext NewRootVC.initJSdata + changebattery + changenetstate 等价。
+    /// 写 4 个 app_*.js 文件，并挂钩 battery / network / appservice 三组钩子：
+    /// 每次变化时同时（1）重写对应 .js 文件（下次 reload 读到新值）
+    /// 和（2）`bridge.call` 反向推送给当前页 H5（§3.2 ［2］［3］［4］）。
+    /// 与原 msext NewRootVC.initJSdata + changebattery + changenetstate + appservice 等价。
     private func writeAppDataFiles(resolved: ResolvedVersion) throws {
         let writer = AppDataWriter(
             bundleConfig: .shared,
@@ -225,28 +227,43 @@ public final class WebContainerViewController: UIViewController {
             containerRole: .lobby
         )
 
-        // 启动 NetworkMonitor（幂等：内部 started 标记）
+        // 启动 3 个 monitor（幂等：内部 started 标记）
         NetworkMonitor.shared.start()
-        UIDevice.current.isBatteryMonitoringEnabled = true
+        BatteryMonitor.shared.start()
+        AppLifecycleObserver.shared.start()
 
         // 首次写入：4 个文件全部落盘
         try writer.writeInitial()
-        try writer.writeBattery(UIDevice.current.batteryLevel)
+        try writer.writeBattery(BatteryMonitor.shared.currentLevel)
         try writer.writeNetwork(NetworkMonitor.shared.currentCode)
 
-        // 持续监听：battery / network 变化时重写对应文件。
-        // 注意：H5 此次加载已读到首次写入的值，下次 reload 才会读到新值；
-        // 业务期间的实时变化由 §3.2 ［2］［3］反向 callback 推送（Phase 2 实现）。
-        NotificationCenter.default.addObserver(
-            forName: UIDevice.batteryLevelDidChangeNotification,
-            object: nil,
-            queue: .main
-        ) { _ in
-            try? writer.writeBattery(UIDevice.current.batteryLevel)
+        let bridge = bridgedWebView.bridge
+
+        // §3.2 ［2］ getBattery — UIDevice 电量变化
+        //   data: 字符串 "%.2f" 形式的小数电量
+        BatteryMonitor.shared.onChange = { level in
+            try? writer.writeBattery(level)
+            bridge.call("getBattery",
+                        data: .string(String(format: "%.2f", level)),
+                        callback: nil)
         }
 
+        // §3.2 ［3］ getnetwork — NWPath 变化
+        //   data: 字符串 "1"=无网 / "2"=WiFi / "3"=蜂窝
         NetworkMonitor.shared.onChange = { code in
             try? writer.writeNetwork(code)
+            bridge.call("getnetwork",
+                        data: .string("\(code)"),
+                        callback: nil)
+        }
+
+        // §3.2 ［4］ appservice — App 前后台切换（命名错位沿用历史）
+        //   data: "1"=进入后台 / "2"=回到前台
+        AppLifecycleObserver.shared.onBackground = {
+            bridge.call("appservice", data: .string("1"), callback: nil)
+        }
+        AppLifecycleObserver.shared.onForeground = {
+            bridge.call("appservice", data: .string("2"), callback: nil)
         }
     }