fix: 修复迁移后的基础UI显示问题

app/android/app/src/main/res/values-night-v28/styles.xml

@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- API 28+ + 深色模式：让游戏画面延伸到刘海/挖孔区（shortEdges），
+         真正铺满屏幕。沿用深色父主题。 -->
+    <style name="LaunchTheme" parent="@android:style/Theme.Black.NoTitleBar">
+        <item name="android:windowBackground">@drawable/launch_background</item>
+        <item name="android:windowFullscreen">true</item>
+        <item name="android:windowLayoutInDisplayCutoutMode">shortEdges</item>
+    </style>
+    <style name="NormalTheme" parent="@android:style/Theme.Black.NoTitleBar">
+        <item name="android:windowBackground">?android:colorBackground</item>
+        <item name="android:windowFullscreen">true</item>
+        <item name="android:windowLayoutInDisplayCutoutMode">shortEdges</item>
+    </style>
+</resources>

app/android/app/src/main/res/values-night/styles.xml

@@ -5,6 +5,8 @@
         <!-- Show a splash screen on the activity. Automatically removed when
              the Flutter engine draws its first frame -->
         <item name="android:windowBackground">@drawable/launch_background</item>
+        <!-- 沉浸式全屏：冷启动阶段即隐藏状态栏/导航栏，避免首帧闪现系统 UI -->
+        <item name="android:windowFullscreen">true</item>
     </style>
     <!-- Theme applied to the Android Window as soon as the process has started.
          This theme determines the color of the Android Window while your
@@ -14,5 +16,6 @@
          This Theme is only used starting with V2 of Flutter's Android embedding. -->
     <style name="NormalTheme" parent="@android:style/Theme.Black.NoTitleBar">
         <item name="android:windowBackground">?android:colorBackground</item>
+        <item name="android:windowFullscreen">true</item>
     </style>
 </resources>

app/android/app/src/main/res/values-v28/styles.xml

@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- API 28+：让游戏画面延伸到刘海/挖孔区（shortEdges），真正铺满屏幕。
+         该属性在 API<28 不存在，必须放在 values-v28 限定目录，否则低版本
+         aapt 编译会报找不到资源。day 模式沿用浅色父主题。 -->
+    <style name="LaunchTheme" parent="@android:style/Theme.Light.NoTitleBar">
+        <item name="android:windowBackground">@drawable/launch_background</item>
+        <item name="android:windowFullscreen">true</item>
+        <item name="android:windowLayoutInDisplayCutoutMode">shortEdges</item>
+    </style>
+    <style name="NormalTheme" parent="@android:style/Theme.Light.NoTitleBar">
+        <item name="android:windowBackground">?android:colorBackground</item>
+        <item name="android:windowFullscreen">true</item>
+        <item name="android:windowLayoutInDisplayCutoutMode">shortEdges</item>
+    </style>
+</resources>

app/android/app/src/main/res/values/styles.xml

@@ -5,6 +5,8 @@
         <!-- Show a splash screen on the activity. Automatically removed when
              the Flutter engine draws its first frame -->
         <item name="android:windowBackground">@drawable/launch_background</item>
+        <!-- 沉浸式全屏：冷启动阶段即隐藏状态栏/导航栏，避免首帧闪现系统 UI -->
+        <item name="android:windowFullscreen">true</item>
     </style>
     <!-- Theme applied to the Android Window as soon as the process has started.
          This theme determines the color of the Android Window while your
@@ -14,5 +16,6 @@
          This Theme is only used starting with V2 of Flutter's Android embedding. -->
     <style name="NormalTheme" parent="@android:style/Theme.Light.NoTitleBar">
         <item name="android:windowBackground">?android:colorBackground</item>
+        <item name="android:windowFullscreen">true</item>
     </style>
 </resources>