fix: 屏幕方向和屏幕超时设置切换后不立即生效

MoreConfigSheet 中屏幕方向和屏幕超时的变更只写入 DataStore，需经过
6 步异步传播（DataStore → Flow → ViewModel → Effect → Controller）
才能生效，导致：
- 切换横屏后文字显示不全，仍保持竖屏布局
- 目录不跟随横屏显示
- 屏幕超时设置延迟生效

修复：
- 新增 ReadBookIntent.SetOrientation 意图，直接写入 ReadConfig 并发射 Effect
- 将 ReadBookIntent.KeepLightChanged 改为带值的 data class，同理直接生效
- MoreConfigSheet 在写 DataStore 的同时同步调用 onIntent，立即应用变更
- 新增反向横屏（REVERSE_LANDSCAPE）选项

app/src/main/java/io/legado/app/ui/book/read/ReadBookContract.kt

@@ -425,7 +425,8 @@ sealed interface ReadBookIntent {
     data class TextActionDict(val text: String) : ReadBookIntent
 
     // Screen / selection config
-    data object KeepLightChanged : ReadBookIntent
+    data class KeepLightChanged(val value: String) : ReadBookIntent
+    data class SetOrientation(val value: String) : ReadBookIntent
     data class TextSelectAbleChanged(val enabled: Boolean) : ReadBookIntent
 
     // Media / TTS

app/src/main/java/io/legado/app/ui/book/read/ReadBookViewModel.kt

@@ -35,6 +35,7 @@ import io.legado.app.domain.usecase.GetReadingProgressUseCase
 import io.legado.app.domain.usecase.UploadReadingProgressUseCase
 import io.legado.app.exception.NoStackTraceException
 import io.legado.app.help.DefaultData
+import io.legado.app.ui.config.readConfig.ReadConfig
 import io.legado.app.help.book.BookHelp
 import io.legado.app.help.book.ContentProcessor
 import io.legado.app.help.book.isEpub
@@ -581,7 +582,15 @@ class ReadBookViewModel(
             is ReadBookIntent.SaveMenuButtonConfig -> saveMenuButtonConfig(intent.items)
             is ReadBookIntent.SaveTitleBarButtonConfig -> saveTitleBarButtonConfig(intent.items)
 
-            is ReadBookIntent.KeepLightChanged -> _effects.tryEmit(ReadBookEffect.UpScreenTimeOut)
+            is ReadBookIntent.KeepLightChanged -> {
+                ReadConfig.keepLight = intent.value
+                _readPreferences.update { it.copy(keepLight = intent.value) }
+                _effects.tryEmit(ReadBookEffect.UpScreenTimeOut)
+            }
+            is ReadBookIntent.SetOrientation -> {
+                ReadConfig.screenOrientation = intent.value
+                _effects.tryEmit(ReadBookEffect.SetOrientation)
+            }
             is ReadBookIntent.TextSelectAbleChanged -> _effects.tryEmit(
                 ReadBookEffect.UpTextSelectAble(
                     intent.enabled

app/src/main/java/io/legado/app/ui/book/read/sheet/MoreConfigSheet.kt

@@ -56,9 +56,11 @@ fun MoreConfigSheet(
             ScreenSettings(
                 preferences = preferences,
                 onScreenOrientationChange = {
+                    onIntent(ReadBookIntent.SetOrientation(it))
                     scope.launch { readSettingsRepository.setScreenOrientation(it) }
                 },
                 onKeepLightChange = {
+                    onIntent(ReadBookIntent.KeepLightChanged(it))
                     scope.launch { readSettingsRepository.setKeepLight(it) }
                 },
                 onHideStatusBarChange = {

app/src/main/res/values-zh-rCN/strings.xml

@@ -1324,6 +1324,7 @@
     <string name="keep_enable">保留启用状态</string>
     <string name="preview_image_by_click">点击预览图片</string>
     <string name="screen_portrait_reversed">反向竖屏</string>
+    <string name="screen_landscape_reversed">反向横屏</string>
     <string name="del_ruby_tag">删除ruby标签</string>
     <string name="del_h_tag">删除h标签</string>
     <string name="adjust_chapter_page">调整本章页数</string>

app/src/main/res/values-zh-rTW/strings.xml

@@ -1193,6 +1193,7 @@
     <string name="keep_enable">保留启用状态</string>
     <string name="preview_image_by_click">点击预览图片</string>
     <string name="screen_portrait_reversed">反向竖屏</string>
+    <string name="screen_landscape_reversed">反向橫屏</string>
     <string name="del_ruby_tag">删除ruby标签</string>
     <string name="del_h_tag">删除h标签</string>
     <string name="adjust_chapter_page">调整本章页数</string>

app/src/main/res/values/array_values.xml

@@ -50,6 +50,7 @@
         <item>2</item>
         <item>3</item>
         <item>4</item>
+        <item>5</item>
     </string-array>
 
     <string-array name="click_image_way_value">

app/src/main/res/values/arrays.xml

@@ -124,6 +124,7 @@
 		<item>@string/screen_landscape</item>
 		<item>@string/screen_sensor</item>
 		<item>@string/screen_portrait_reversed</item>
+		<item>@string/screen_landscape_reversed</item>
 	</string-array>
 
     <string-array name="click_image_way_title">

app/src/main/res/values/strings.xml

@@ -1356,6 +1356,7 @@
     <string name="preview_image_by_click">Click to preview image</string>
     <string name="default_home_page">Default Homepage</string>
     <string name="screen_portrait_reversed">Portrait Reversed</string>
+    <string name="screen_landscape_reversed">Landscape Reversed</string>
     <string name="del_ruby_tag">Delete ruby tag</string>
     <string name="del_h_tag">Delete h tag</string>
     <string name="adjust_chapter_page">Adjust of chapter page</string>