fix: 状态栏固定在顶部，不随ViewPager2滑动

- 状态栏从两个子页面移到fragment_home.xml顶层
- ViewPager2在状态栏下方滑动
- HomeFragment只维护一个固定statusBar引用

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

app/src/main/java/com/xiaoqu/watch/ui/home/HomeFragment.kt

@@ -39,8 +39,10 @@ class HomeFragment : BaseFragment<FragmentHomeBinding>() {
     @Inject lateinit var eventBus: EventBus
     @Inject lateinit var taskApi: TaskApi
 
+    // ===== 固定状态栏（不随 ViewPager 滑动） =====
+    private lateinit var statusBar: StatusBarView
+
     // ===== 主页 View 引用 =====
-    private lateinit var mainStatusBar: StatusBarView
     private lateinit var tvClock: TextView
     private lateinit var tvDate: TextView
     private lateinit var tvPoolNum: TextView
@@ -48,7 +50,6 @@ class HomeFragment : BaseFragment<FragmentHomeBinding>() {
     private lateinit var tvCompleteNum: TextView
 
     // ===== 设置页 View 引用 =====
-    private lateinit var configStatusBar: StatusBarView
     private lateinit var tvAvatarLetter: TextView
     private lateinit var tvUserName: TextView
     private lateinit var tvUserPhone: TextView
@@ -64,6 +65,9 @@ class HomeFragment : BaseFragment<FragmentHomeBinding>() {
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         super.onViewCreated(view, savedInstanceState)
 
+        // 绑定固定状态栏（不随 ViewPager 滑动）
+        statusBar = binding.statusBar
+
         // 创建两个页面 View
         val inflater = LayoutInflater.from(requireContext())
         val configPage = inflater.inflate(R.layout.page_config, null)
@@ -96,7 +100,6 @@ class HomeFragment : BaseFragment<FragmentHomeBinding>() {
 
     /** 绑定主页 View 引用 */
     private fun bindMainViews(page: View) {
-        mainStatusBar = page.findViewById(R.id.statusBar)
         tvClock = page.findViewById(R.id.tvClock)
         tvDate = page.findViewById(R.id.tvDate)
         tvPoolNum = page.findViewById(R.id.tvPoolNum)
@@ -161,7 +164,6 @@ class HomeFragment : BaseFragment<FragmentHomeBinding>() {
     /** 绑定设置页 View 引用并直接填充数据 */
     private fun bindConfigViews(page: View) {
         configPageView = page
-        configStatusBar = page.findViewById(R.id.statusBar)
         tvAvatarLetter = page.findViewById(R.id.tvAvatarLetter)
         tvUserName = page.findViewById(R.id.tvUserName)
         tvUserPhone = page.findViewById(R.id.tvUserPhone)
@@ -225,15 +227,13 @@ class HomeFragment : BaseFragment<FragmentHomeBinding>() {
         viewLifecycleOwner.lifecycleScope.launch {
             eventBus.events.collect { event ->
                 when (event) {
-                    // 电量变化：更新两个状态栏
+                    // 电量变化：更新固定状态栏
                     is AppEvent.BatteryChanged -> {
-                        mainStatusBar.updateBattery(event.level, event.isCharging)
-                        configStatusBar.updateBattery(event.level, event.isCharging)
+                        statusBar.updateBattery(event.level, event.isCharging)
                     }
                     // 蓝牙状态变化
                     is AppEvent.BluetoothStateChanged -> {
-                        mainStatusBar.updateBluetooth(event.isOn)
-                        configStatusBar.updateBluetooth(event.isOn)
+                        statusBar.updateBluetooth(event.isOn)
                     }
                     // MQTT 消息
                     is AppEvent.MqttMessageReceived -> {

app/src/main/res/layout/fragment_home.xml

@@ -1,13 +1,26 @@
 <?xml version="1.0" encoding="utf-8"?>
-<!-- 首页容器：ViewPager2 左右滑动（设置页 / 主页） -->
-<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+<!-- 首页容器：固定状态栏 + ViewPager2 左右滑动 -->
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
-    android:background="@color/background">
+    android:background="@color/background"
+    android:orientation="vertical"
+    android:paddingStart="21dp"
+    android:paddingTop="27dp"
+    android:paddingEnd="21dp">
 
+    <!-- 固定状态栏（不随 ViewPager2 滑动） -->
+    <com.xiaoqu.watch.ui.widget.StatusBarView
+        android:id="@+id/statusBar"
+        android:layout_width="match_parent"
+        android:layout_height="24dp"
+        android:layout_marginBottom="3dp" />
+
+    <!-- ViewPager2 在状态栏下方滑动 -->
     <androidx.viewpager2.widget.ViewPager2
         android:id="@+id/viewPager"
         android:layout_width="match_parent"
-        android:layout_height="match_parent" />
+        android:layout_height="0dp"
+        android:layout_weight="1" />
 
-</FrameLayout>
+</LinearLayout>

app/src/main/res/layout/page_config.xml

@@ -6,17 +6,8 @@
     android:layout_height="match_parent"
     android:background="@color/background"
     android:orientation="vertical"
-    android:paddingStart="21dp"
-    android:paddingTop="27dp"
-    android:paddingEnd="21dp"
     android:paddingBottom="27dp">
 
-    <!-- 状态栏 18px → 24dp -->
-    <com.xiaoqu.watch.ui.widget.StatusBarView
-        android:id="@+id/statusBar"
-        android:layout_width="match_parent"
-        android:layout_height="24dp" />
-
     <!-- 可滚动内容区 -->
     <ScrollView
         android:layout_width="match_parent"

app/src/main/res/layout/page_main.xml

@@ -7,18 +7,8 @@
     android:layout_height="match_parent"
     android:background="@color/background"
     android:orientation="vertical"
-    android:paddingStart="21dp"
-    android:paddingTop="27dp"
-    android:paddingEnd="21dp"
     android:paddingBottom="27dp">
 
-    <!-- 状态栏 18px → 24dp -->
-    <com.xiaoqu.watch.ui.widget.StatusBarView
-        android:id="@+id/statusBar"
-        android:layout_width="match_parent"
-        android:layout_height="24dp"
-        android:layout_marginBottom="3dp" />
-
     <!-- 时钟区域（flex:1 撑满中间） -->
     <LinearLayout
         android:layout_width="match_parent"