0.6.8

小黑板数据持久化。

.codex/environments/environment.toml

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+# THIS IS AUTOGENERATED. DO NOT EDIT MANUALLY
+version = 1
+name = "LanMountainDesktop"
+
+[setup]
+script = ""
+
+[[actions]]
+name = "运行"
+icon = "run"
+command = "dotnet run --project 'C:\\Users\\USER693091\\Documents\\GitHub\\LanMountainDesktop\\LanMountainDesktop\\LanMountainDesktop.csproj"
+
+[[actions]]
+name = "构建"
+icon = "tool"
+command = "dotnet build 'C:\\Users\\USER693091\\Documents\\GitHub\\LanMountainDesktop\\LanMountainDesktop.slnx"

LanMontainDesktop/.trae/specs/remove-video-wallpaper-feature/design.md

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+# 移除视频壁纸功能 - 技术设计文档
+
+## 1. 概述
+
+### 1.1 设计目标
+
+本设计文档描述如何从 LanMountainDesktop 项目中完全移除视频壁纸功能，包括：
+- 移除 LibVLC 相关依赖
+- 清理主窗口中的视频壁纸代码
+- 简化壁纸设置页面
+- 清理本地化资源
+
+### 1.2 技术约束
+
+- 保持现有图片壁纸和纯色壁纸功能完整
+- 确保应用构建和运行正常
+- 不引入新的外部依赖
+
+---
+
+## 2. 架构变更
+
+### 2.1 变更概览图
+
+```
+┌─────────────────────────────────────────────────────────────────┐
+│                        变更前架构                                │
+├─────────────────────────────────────────────────────────────────┤
+│  MainWindow                                                      │
+│  ├── DesktopWallpaperLayer (背景层)                              │
+│  │   ├── DesktopWallpaperImageLayer (图片层)                     │
+│  │   ├── DesktopVideoWallpaperImage (视频海报层)                  │
+│  │   └── DesktopVideoWallpaperView (VLC视频播放层)               │
+│  ├── _libVlc, _videoWallpaperPlayer, _videoWallpaperMedia        │
+│  └── StartVideoWallpaper(), StopVideoWallpaper()                 │
+│                                                                  │
+│  WallpaperSettingsPage                                           │
+│  ├── 类型选择: Image | Video | SolidColor                        │
+│  └── 视频预览区域                                                 │
+└─────────────────────────────────────────────────────────────────┘
+
+┌─────────────────────────────────────────────────────────────────┐
+│                        变更后架构                                │
+├─────────────────────────────────────────────────────────────────┤
+│  MainWindow                                                      │
+│  ├── DesktopWallpaperLayer (背景层)                              │
+│  │   └── DesktopWallpaperImageLayer (图片层)                     │
+│  └── (移除所有视频相关字段和方法)                                  │
+│                                                                  │
+│  WallpaperSettingsPage                                           │
+│  ├── 类型选择: Image | SolidColor                                │
+│  └── (移除视频预览区域)                                           │
+└─────────────────────────────────────────────────────────────────┘
+```
+
+### 2.2 组件变更清单
+
+| 组件 | 变更类型 | 说明 |
+|------|----------|------|
+| LanMountainDesktop.csproj | 修改 | 移除 LibVLC 包引用 |
+| MainWindow.axaml | 修改 | 移除视频控件和命名空间 |
+| MainWindow.axaml.cs | 修改 | 移除视频相关字段和清理代码 |
+| MainWindow.SettingsHardCut.Stubs.cs | 修改 | 移除视频壁纸方法 |
+| AppearanceThemeService.cs | 修改 | 移除视频种子提取器 |
+| WallpaperSettingsPage.axaml | 修改 | 移除视频类型UI |
+| WallpaperSettingsPageViewModel.cs | 修改 | 移除视频相关属性 |
+| SettingsContracts.cs | 修改 | 移除 Video 枚举值 |
+| SettingsDomainServices.cs | 修改 | 移除视频扩展名检测 |
+| zh-CN.json | 修改 | 移除视频相关本地化文本 |
+
+---
+
+## 3. 详细设计
+
+### 3.1 项目依赖变更 (LanMountainDesktop.csproj)
+
+#### 3.1.1 移除的包引用
+
+```xml
+<!-- 移除以下包引用 -->
+<PackageReference Include="LibVLCSharp.Avalonia" Version="3.9.5" />
+<PackageReference Include="VideoLAN.LibVLC.Windows" Version="3.0.23" Condition="..." />
+<PackageReference Include="VideoLAN.LibVLC.Mac" Version="3.1.3.1" Condition="..." />
+```
+
+#### 3.1.2 变更影响
+
+- 减少约 100MB+ 的依赖包大小
+- 简化构建和发布流程
+- 移除平台特定的原生库依赖
+
+---
+
+### 3.2 主窗口 XAML 变更 (MainWindow.axaml)
+
+#### 3.2.1 移除命名空间声明
+
+```xml
+<!-- 移除此行 -->
+xmlns:vlc="clr-namespace:LibVLCSharp.Avalonia;assembly=LibVLCSharp.Avalonia"
+```
+
+#### 3.2.2 移除视频壁纸控件
+
+移除以下控件（约第126-137行）：
+
+```xml
+<!-- 移除 DesktopVideoWallpaperImage -->
+<Image x:Name="DesktopVideoWallpaperImage"
+       IsVisible="False"
+       IsHitTestVisible="False"
+       Stretch="UniformToFill"
+       HorizontalAlignment="Stretch"
+       VerticalAlignment="Stretch" />
+
+<!-- 移除 DesktopVideoWallpaperView -->
+<vlc:VideoView x:Name="DesktopVideoWallpaperView"
+               IsVisible="False"
+               IsHitTestVisible="False"
+               HorizontalAlignment="Stretch"
+               VerticalAlignment="Stretch" />
+```
+
+---
+
+### 3.3 主窗口代码变更 (MainWindow.axaml.cs)
+
+#### 3.3.1 移除 using 声明
+
+```csharp
+// 移除以下 using（如果存在）
+using LibVLCSharp.Shared;
+using LibVLCSharp.Avalonia;
+```
+
+#### 3.3.2 移除静态字段
+
+```csharp
+// 移除以下字段（约第68-71行）
+private static readonly HashSet<string> SupportedVideoExtensions = new(StringComparer.OrdinalIgnoreCase)
+{
+    ".mp4", ".mkv", ".webm", ".avi", ".mov", ".m4v"
+};
+```
+
+#### 3.3.3 移除实例字段
+
+```csharp
+// 移除以下字段（约第123-146行）
+private Bitmap? _videoWallpaperPosterBitmap;
+private string? _videoWallpaperPosterPath;
+private string? _wallpaperVideoPath;
+private LibVLC? _libVlc;
+private MediaPlayer? _videoWallpaperPlayer;
+private Media? _videoWallpaperMedia;
+private readonly object _desktopVideoFrameSync = new();
+private MediaPlayer.LibVLCVideoLockCb? _desktopVideoLockCallback;
+private MediaPlayer.LibVLCVideoUnlockCb? _desktopVideoUnlockCallback;
+private MediaPlayer.LibVLCVideoDisplayCb? _desktopVideoDisplayCallback;
+private DispatcherTimer? _desktopVideoFrameRefreshTimer;
+private IntPtr _desktopVideoFrameBufferPtr;
+private byte[]? _desktopVideoStagingBuffer;
+private WriteableBitmap? _desktopVideoBitmap;
+private int _desktopVideoFrameWidth;
+private int _desktopVideoFrameHeight;
+private int _desktopVideoFramePitch;
+private int _desktopVideoFrameBufferSize;
+private int _desktopVideoFrameDirtyFlag;
+```
+
+#### 3.3.4 修改 OnClosed 方法
+
+移除视频相关清理代码（约第336-350行）：
+
+```csharp
+// 移除以下代码行
+StopVideoWallpaper();
+_videoWallpaperMedia?.Dispose();
+_videoWallpaperMedia = null;
+_videoWallpaperPlayer?.Dispose();
+_videoWallpaperPlayer = null;
+_desktopVideoFrameRefreshTimer?.Stop();
+_desktopVideoFrameRefreshTimer = null;
+_videoWallpaperPosterBitmap?.Dispose();
+_videoWallpaperPosterBitmap = null;
+_videoWallpaperPosterPath = null;
+_libVlc?.Dispose();
+_libVlc = null;
+```
+
+---
+
+### 3.4 主窗口 Stub 方法变更 (MainWindow.SettingsHardCut.Stubs.cs)
+
+#### 3.4.1 移除 using 声明
+
+```csharp
+// 移除以下 using（第19-20行）
+using LibVLCSharp.Shared;
+using LibVLCSharp.Avalonia;
+```
+
+#### 3.4.2 移除方法
+
+移除以下完整方法：
+
+| 方法名 | 行号范围 | 说明 |
+|--------|----------|------|
+| `StartVideoWallpaper` | 337-383 | 启动视频壁纸播放 |
+| `StopVideoWallpaper` | 385-395 | 停止视频壁纸播放 |
+| `TryCaptureVideoWallpaperPosterFrame` | 666-751 | 捕获视频海报帧 |
+| `ApplyVideoWallpaperPosterVisibility` | 647-664 | 控制视频海报可见性 |
+
+#### 3.4.3 修改 UpdateWallpaperDisplay 方法
+
+简化为仅处理图片壁纸：
+
+```csharp
+private void UpdateWallpaperDisplay()
+{
+    // 移除视频分支，仅保留图片处理
+    StopVideoWallpaper();  // 移除此调用
+    ApplyWallpaperBrush();
+}
+```
+
+修改后：
+
+```csharp
+private void UpdateWallpaperDisplay()
+{
+    ApplyWallpaperBrush();
+}
+```
+
+#### 3.4.4 修改 ApplyWallpaperBrush 方法
+
+移除所有 `ApplyVideoWallpaperPosterVisibility` 调用：
+
+```csharp
+// 移除以下调用
+ApplyVideoWallpaperPosterVisibility(showPoster: false);
+ApplyVideoWallpaperPosterVisibility(showPoster: _videoWallpaperPosterBitmap is not null);
+```
+
+#### 3.4.5 修改 SetWallpaperState 方法
+
+移除视频类型处理分支（约第238-247行）：
+
+```csharp
+// 移除以下代码块
+var requestedTypeIsVideo = string.Equals(_wallpaperType, "Video", StringComparison.OrdinalIgnoreCase);
+if (SupportedVideoExtensions.Contains(extension) || requestedTypeIsVideo)
+{
+    _wallpaperMediaType = WallpaperMediaType.Video;
+    _wallpaperVideoPath = _wallpaperPath;
+    _wallpaperDisplayState = File.Exists(_wallpaperPath)
+        ? WallpaperDisplayState.CurrentValidWallpaper
+        : WallpaperDisplayState.TemporarilyUnavailable;
+    return;
+}
+```
+
+---
+
+### 3.5 外观主题服务变更 (AppearanceThemeService.cs)
+
+#### 3.5.1 移除接口和类
+
+移除以下代码（约第92-184行）：
+
+```csharp
+// 移除接口
+internal interface IVideoWallpaperSeedExtractor
+{
+    IReadOnlyList<Color> ExtractSeedCandidates(string videoPath, MonetColorService monetColorService);
+}
+
+// 移除实现类
+internal sealed class LibVlcVideoWallpaperSeedExtractor : IVideoWallpaperSeedExtractor
+{
+    // ... 整个类实现
+}
+```
+
+---
+
+### 3.6 壁纸设置页面 XAML 变更 (WallpaperSettingsPage.axaml)
+
+#### 3.6.1 移除视频预览区域
+
+移除以下代码（约第29-44行）：
+
+```xml
+<Border Background="#FFF6F7F9"
+        IsVisible="{Binding IsVideo}">
+    <StackPanel HorizontalAlignment="Center"
+                VerticalAlignment="Center"
+                Spacing="12">
+        <fi:FluentIcon Icon="Video"
+                       Width="72"
+                       Height="72"
+                       Foreground="{DynamicResource AdaptiveTextSecondaryBrush}" />
+        <TextBlock Text="{Binding VideoModeHintText}"
+                   Width="300"
+                   TextAlignment="Center"
+                   TextWrapping="Wrap"
+                   Foreground="{DynamicResource AdaptiveTextSecondaryBrush}" />
+    </StackPanel>
+</Border>
+```
+
+#### 3.6.2 移除视频模式提示文本
+
+移除以下代码（约第150-154行）：
+
+```xml
+<TextBlock Margin="0,8,0,0"
+           IsVisible="{Binding IsVideo}"
+           Foreground="{DynamicResource AdaptiveTextSecondaryBrush}"
+           Text="{Binding VideoModeHintText}"
+           TextWrapping="Wrap" />
+```
+
+#### 3.6.3 修改填充方式设置可见性绑定
+
+```xml
+<!-- 修改前 -->
+IsVisible="{Binding IsImageOrVideo}"
+
+<!-- 修改后 -->
+IsVisible="{Binding IsImage}"
+```
+
+---
+
+### 3.7 壁纸设置 ViewModel 变更 (WallpaperSettingsPageViewModel.cs)
+
+#### 3.7.1 移除属性
+
+```csharp
+// 移除以下属性
+[ObservableProperty]
+private bool _isImageOrVideo;
+
+[ObservableProperty]
+private bool _isVideo;
+
+[ObservableProperty]
+private string _videoModeHintText = string.Empty;
+```
+
+#### 3.7.2 修改 CreateWallpaperTypes 方法
+
+```csharp
+// 修改前
+private IReadOnlyList<SelectionOption> CreateWallpaperTypes()
+{
+    return
+    [
+        new SelectionOption("Image", L("settings.wallpaper.type.image", "Image")),
+        new SelectionOption("Video", L("settings.wallpaper.type.video", "Video")),
+        new SelectionOption("SolidColor", L("settings.wallpaper.type.solid_color", "Solid Color"))
+    ];
+}
+
+// 修改后
+private IReadOnlyList<SelectionOption> CreateWallpaperTypes()
+{
+    return
+    [
+        new SelectionOption("Image", L("settings.wallpaper.type.image", "Image")),
+        new SelectionOption("SolidColor", L("settings.wallpaper.type.solid_color", "Solid Color"))
+    ];
+}
+```
+
+#### 3.7.3 修改 UpdateVisibility 方法
+
+移除 IsVideo 和 IsImageOrVideo 的赋值：
+
+```csharp
+// 移除以下行
+IsVideo = SelectedWallpaperType?.Value == "Video";
+IsImageOrVideo = SelectedWallpaperType?.Value is "Image" or "Video";
+```
+
+#### 3.7.4 修改 RefreshLocalizedText 方法
+
+```csharp
+// 移除以下行
+VideoModeHintText = L("settings.wallpaper.video_mode", "Video wallpaper uses automatic fill mode.");
+```
+
+---
+
+### 3.8 设置契约变更 (SettingsContracts.cs)
+
+#### 3.8.1 修改 WallpaperMediaType 枚举
+
+```csharp
+// 修改前
+public enum WallpaperMediaType
+{
+    None,
+    Image,
+    Video
+}
+
+// 修改后
+public enum WallpaperMediaType
+{
+    None,
+    Image
+}
+```
+
+---
+
+### 3.9 设置域服务变更 (SettingsDomainServices.cs)
+
+#### 3.9.1 移除视频扩展名集合
+
+```csharp
+// 移除以下字段（约第150-153行）
+private static readonly HashSet<string> VideoExtensions = new(StringComparer.OrdinalIgnoreCase)
+{
+    ".mp4", ".mkv", ".webm", ".avi", ".mov", ".m4v"
+};
+```
+
+#### 3.9.2 修改 DetectMediaType 方法
+
+```csharp
+// 修改前
+public WallpaperMediaType DetectMediaType(string? path)
+{
+    if (string.IsNullOrWhiteSpace(path))
+    {
+        return WallpaperMediaType.None;
+    }
+
+    var extension = Path.GetExtension(path.Trim());
+    if (string.IsNullOrWhiteSpace(extension))
+    {
+        return WallpaperMediaType.None;
+    }
+
+    if (ImageExtensions.Contains(extension))
+    {
+        return WallpaperMediaType.Image;
+    }
+
+    if (VideoExtensions.Contains(extension))
+    {
+        return WallpaperMediaType.Video;
+    }
+
+    return WallpaperMediaType.None;
+}
+
+// 修改后
+public WallpaperMediaType DetectMediaType(string? path)
+{
+    if (string.IsNullOrWhiteSpace(path))
+    {
+        return WallpaperMediaType.None;
+    }
+
+    var extension = Path.GetExtension(path.Trim());
+    if (string.IsNullOrWhiteSpace(extension))
+    {
+        return WallpaperMediaType.None;
+    }
+
+    if (ImageExtensions.Contains(extension))
+    {
+        return WallpaperMediaType.Image;
+    }
+
+    return WallpaperMediaType.None;
+}
+```
+
+---
+
+### 3.10 本地化文件变更 (zh-CN.json)
+
+#### 3.10.1 移除的本地化键
+
+```json
+// 移除以下键值对
+"settings.wallpaper.type.video": "视频",
+"settings.wallpaper.video_applied": "视频壁纸已应用。",
+"settings.wallpaper.video_mode": "视频壁纸使用自动填充模式。",
+"settings.wallpaper.video_restored": "已恢复保存的视频壁纸。",
+"settings.wallpaper.video_not_found": "未找到视频壁纸文件。",
+"settings.wallpaper.video_player_unavailable": "视频播放器不可用。",
+"settings.wallpaper.video_play_failed_format": "播放视频壁纸失败：{0}"
+```
+
+#### 3.10.2 修改描述文本
+
+```json
+// 修改前
+"settings.wallpaper.description": "选择图片或视频后可立即设为应用窗口壁纸。",
+
+// 修改后
+"settings.wallpaper.description": "选择图片后可立即设为应用窗口壁纸。",
+```
+
+---
+
+## 4. 数据模型变更
+
+### 4.1 WallpaperMediaType 枚举简化
+
+```
+变更前: None | Image | Video
+变更后: None | Image
+```
+
+### 4.2 设置存储兼容性
+
+现有用户设置中如果包含 `Type: "Video"` 的壁纸配置：
+- 应用将无法识别该类型
+- 将回退到纯色背景
+- 用户需要重新选择图片壁纸
+
+---
+
+## 5. 风险评估
+
+### 5.1 潜在风险
+
+| 风险 | 影响 | 缓解措施 |
+|------|------|----------|
+| 现有视频壁纸用户设置失效 | 中 | 应用会自动回退到纯色背景 |
+| 遗漏的视频相关代码引用 | 低 | 编译器会报告未定义类型错误 |
+| 本地化键遗漏 | 低 | 运行时会显示键名而非翻译文本 |
+
+### 5.2 回滚策略
+
+如需回滚，可通过 Git 恢复以下文件：
+- LanMountainDesktop.csproj
+- MainWindow.axaml / .axaml.cs
+- MainWindow.SettingsHardCut.Stubs.cs
+- AppearanceThemeService.cs
+- WallpaperSettingsPage.axaml
+- WallpaperSettingsPageViewModel.cs
+- SettingsContracts.cs
+- SettingsDomainServices.cs
+- zh-CN.json
+
+---
+
+## 6. 验证清单
+
+### 6.1 编译验证
+
+- [ ] 项目编译无错误
+- [ ] 无 LibVLC 相关类型引用警告
+- [ ] 无未使用变量警告
+
+### 6.2 功能验证
+
+- [ ] 应用正常启动
+- [ ] 图片壁纸正常显示
+- [ ] 纯色壁纸正常显示
+- [ ] 壁纸设置页面正常打开
+- [ ] 类型选择器仅显示"图片"和"纯色"
+- [ ] 壁纸导入功能正常工作
+
+### 6.3 清理验证
+
+- [ ] 无 LibVLC 相关 DLL 在输出目录
+- [ ] 无视频相关本地化文本残留
+- [ ] 无视频相关 UI 控件残留

LanMontainDesktop/.trae/specs/remove-video-wallpaper-feature/spec.md

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+# 移除视频壁纸功能规格说明书
+
+## Why
+
+当前 LanMountainDesktop 项目包含视频壁纸功能，该功能引入了以下复杂性和依赖：
+1. 引入了 LibVLCSharp.Avalonia、VideoLAN.LibVLC.Windows、VideoLAN.LibVLC.Mac 等重型依赖
+2. 在主窗口中残留大量视频壁纸相关代码和字段
+3. 在设置页面中保留了视频类型选择器和相关 UI 元素
+4. 在本地化文件中保留了视频壁纸相关文本
+5. 增加了应用复杂度和维护成本
+
+用户决定移除该功能以简化代码库。
+
+## What Changes
+
+- 移除 LibVLCSharp.Avalonia 及 VideoLAN.LibVLC.* NuGet 依赖
+- 移除 AppearanceThemeService.cs 中的 LibVlcVideoWallpaperSeedExtractor 类和 IVideoWallpaperSeedExtractor 接口
+- 移除 MainWindow.axaml.cs 中的视频壁纸相关字段和清理代码
+- 移除 MainWindow.SettingsHardCut.Stubs.cs 中的视频壁纸相关方法
+- 移除 MainWindow.axaml 中的 DesktopVideoWallpaperImage 和 DesktopVideoWallpaperView 控件
+- 移除 WallpaperSettingsPage.axaml 中的视频类型选择器和视频模式提示
+- 移除 WallpaperSettingsPageViewModel.cs 中的 IsVideo、VideoModeHintText 等属性
+- 移除 SettingsContracts.cs 中 WallpaperMediaType 枚举的 Video 值
+- 移除 SettingsDomainServices.cs 中 WallpaperMediaService 类的视频扩展名检测逻辑
+- 移除本地化文件中的视频壁纸相关文本
+
+## Impact
+
+### Affected specs
+- 壁纸设置功能规格
+- 主窗口桌面层规格
+
+### Affected code
+- `LanMountainDesktop.csproj` - NuGet 依赖配置
+- `Services/AppearanceThemeService.cs` - 视频壁纸种子提取器
+- `Views/MainWindow.axaml.cs` - 主窗口字段和清理逻辑
+- `Views/MainWindow.SettingsHardCut.Stubs.cs` - 视频壁纸控制方法
+- `Views/MainWindow.axaml` - 视频壁纸 UI 控件
+- `Views/SettingsPages/WallpaperSettingsPage.axaml` - 壁纸设置页面 UI
+- `ViewModels/WallpaperSettingsPageViewModel.cs` - 壁纸设置 ViewModel
+- `Services/Settings/SettingsContracts.cs` - 壁纸媒体类型枚举
+- `Services/Settings/SettingsDomainServices.cs` - 壁纸媒体服务
+- `Localization/zh-CN.json` - 本地化文本
+
+---
+
+## REMOVED Requirements
+
+### Requirement: 视频壁纸播放功能
+
+**Reason**: 用户决定移除视频壁纸功能以简化代码库，减少重型依赖
+
+**Migration**: 
+- 用户如需动态壁纸，可使用静态图片壁纸替代
+- 现有视频壁纸设置将被重置为纯色背景
+
+#### Scenario: 视频壁纸播放
+- **GIVEN** 用户选择了视频文件作为壁纸
+- **WHEN** 系统检测到视频格式
+- **THEN** 系统不再支持视频壁纸播放
+- **AND THEN** 系统提示用户该文件类型不受支持
+
+### Requirement: LibVLC 依赖
+
+**Reason**: 移除视频壁纸功能后不再需要 LibVLC 库
+
+**Migration**: 从项目依赖中移除以下包：
+- LibVLCSharp.Avalonia
+- VideoLAN.LibVLC.Windows
+- VideoLAN.LibVLC.Mac
+
+### Requirement: 视频壁纸种子提取
+
+**Reason**: 移除视频壁纸功能后不再需要从视频中提取颜色种子
+
+**Migration**: 移除 `LibVlcVideoWallpaperSeedExtractor` 类和 `IVideoWallpaperSeedExtractor` 接口
+
+### Requirement: 视频壁纸 UI 控件
+
+**Reason**: 移除视频壁纸功能后不再需要视频显示控件
+
+**Migration**: 移除 `DesktopVideoWallpaperImage` 和 `DesktopVideoWallpaperView` 控件
+
+### Requirement: 视频类型选择器
+
+**Reason**: 移除视频壁纸功能后不再需要视频类型选项
+
+**Migration**: 从壁纸类型选择器中移除"视频"选项
+
+---
+
+## MODIFIED Requirements
+
+### Requirement: 壁纸媒体类型检测
+
+**当前**: 支持检测 None、Image、Video 三种类型
+
+**修改后**: 仅支持检测 None、Image 两种类型
+
+#### Scenario: 检测媒体类型
+- **WHEN** 用户选择壁纸文件
+- **THEN** 系统仅检测图片格式（.png, .jpg, .jpeg, .bmp, .gif, .webp）
+- **AND THEN** 视频格式文件将被识别为不受支持的类型
+
+### Requirement: 壁纸类型选项
+
+**当前**: 提供图片、视频、纯色三种类型选项
+
+**修改后**: 仅提供图片、纯色两种类型选项
+
+#### Scenario: 壁纸类型选择
+- **WHEN** 用户打开壁纸设置页面
+- **THEN** 类型选择器仅显示"图片"和"纯色"选项
+- **AND THEN** "视频"选项不再显示
+
+### Requirement: 壁纸设置页面预览
+
+**当前**: 根据类型显示图片预览、视频预览或纯色预览
+
+**修改后**: 根据类型显示图片预览或纯色预览
+
+#### Scenario: 预览显示
+- **WHEN** 用户选择壁纸类型
+- **THEN** 系统仅显示图片预览或纯色预览
+- **AND THEN** 视频预览区域不再显示
+
+### Requirement: 主窗口壁纸显示
+
+**当前**: 支持显示静态图片壁纸和视频壁纸
+
+**修改后**: 仅支持显示静态图片壁纸
+
+#### Scenario: 壁纸显示更新
+- **WHEN** 用户应用新壁纸
+- **THEN** 系统仅处理静态图片壁纸显示
+- **AND THEN** 视频壁纸播放逻辑不再执行
+
+---
+
+## ADDED Requirements
+
+### Requirement: 清理残留代码
+
+系统 SHALL 完全移除视频壁纸功能相关的所有代码和资源。
+
+#### Scenario: 主窗口字段清理
+- **WHEN** 执行代码清理
+- **THEN** 移除以下字段：
+  - `_videoWallpaperPosterBitmap`
+  - `_videoWallpaperPosterPath`
+  - `_libVlc`
+  - `_videoWallpaperPlayer`
+  - `_videoWallpaperMedia`
+  - `_wallpaperVideoPath`
+
+#### Scenario: 主窗口方法清理
+- **WHEN** 执行代码清理
+- **THEN** 移除以下方法：
+  - `StartVideoWallpaper`
+  - `StopVideoWallpaper`
+  - `TryCaptureVideoWallpaperPosterFrame`
+  - `ApplyVideoWallpaperPosterVisibility`
+  - `UpdateWallpaperDisplay` 中的视频处理分支
+
+#### Scenario: ViewModel 属性清理
+- **WHEN** 执行代码清理
+- **THEN** 移除以下属性：
+  - `IsVideo`
+  - `VideoModeHintText`
+  - `IsImageOrVideo`（改为 `IsImage`）
+
+#### Scenario: 本地化文本清理
+- **WHEN** 执行代码清理
+- **THEN** 移除以下本地化键：
+  - `settings.wallpaper.type.video`
+  - `settings.wallpaper.video_applied`
+  - `settings.wallpaper.video_mode`
+  - `settings.wallpaper.video_restored`
+  - `settings.wallpaper.video_not_found`
+  - `settings.wallpaper.video_player_unavailable`
+  - `settings.wallpaper.video_play_failed_format`
+
+### Requirement: 依赖项清理
+
+系统 SHALL 从项目文件中移除 LibVLC 相关 NuGet 包引用。
+
+#### Scenario: NuGet 包移除
+- **WHEN** 执行依赖清理
+- **THEN** 移除以下包引用：
+  - `LibVLCSharp.Avalonia`
+  - `VideoLAN.LibVLC.Windows`
+  - `VideoLAN.LibVLC.Mac`
+
+### Requirement: 构建验证
+
+系统 SHALL 在移除视频壁纸功能后保持正常构建和运行。
+
+#### Scenario: 构建成功
+- **WHEN** 执行项目构建
+- **THEN** 构建成功无错误
+- **AND THEN** 所有现有测试通过
+
+#### Scenario: 应用启动
+- **WHEN** 启动应用程序
+- **THEN** 应用正常启动
+- **AND THEN** 壁纸设置功能正常工作（仅支持图片和纯色）

LanMontainDesktop/.trae/specs/remove-video-wallpaper-feature/tasks.md

@@ -0,0 +1,600 @@
+# 移除视频壁纸功能 - 编码任务清单
+
+## 任务概览
+
+本文档将技术设计分解为可执行的编码任务，按依赖关系排序执行。
+
+---
+
+## 任务 1: 移除项目依赖
+
+**优先级**: P0 (最高)  
+**依赖**: 无  
+**预估工作量**: 5 分钟
+
+### 描述
+
+从项目文件中移除 LibVLC 相关的 NuGet 包引用。
+
+### 输入
+
+- `LanMountainDesktop/LanMountainDesktop.csproj`
+
+### 输出
+
+- 修改后的 `LanMountainDesktop.csproj`，移除以下包引用：
+  - `LibVLCSharp.Avalonia`
+  - `VideoLAN.LibVLC.Windows`
+  - `VideoLAN.LibVLC.Mac`
+
+### 验收标准
+
+- [ ] 项目文件中不再包含 LibVLC 相关包引用
+- [ ] 执行 `dotnet restore` 成功
+
+### 执行提示
+
+```
+编辑 LanMountainDesktop.csproj，移除以下 PackageReference 节点：
+1. <PackageReference Include="LibVLCSharp.Avalonia" Version="3.9.5" />
+2. <PackageReference Include="VideoLAN.LibVLC.Windows" ... />
+3. <PackageReference Include="VideoLAN.LibVLC.Mac" ... />
+```
+
+---
+
+## 任务 2: 移除主窗口 XAML 视频控件
+
+**优先级**: P0  
+**依赖**: 任务 1  
+**预估工作量**: 10 分钟
+
+### 描述
+
+从 MainWindow.axaml 中移除视频壁纸相关的 XAML 控件和命名空间声明。
+
+### 输入
+
+- `LanMountainDesktop/Views/MainWindow.axaml`
+
+### 输出
+
+- 移除 LibVLC 命名空间声明
+- 移除 `DesktopVideoWallpaperImage` 控件
+- 移除 `DesktopVideoWallpaperView` 控件
+
+### 验收标准
+
+- [ ] XAML 中无 `xmlns:vlc` 命名空间
+- [ ] XAML 中无 `DesktopVideoWallpaperImage` 元素
+- [ ] XAML 中无 `DesktopVideoWallpaperView` 元素
+
+### 执行提示
+
+```
+编辑 MainWindow.axaml：
+1. 移除第 9 行: xmlns:vlc="clr-namespace:LibVLCSharp.Avalonia;assembly=LibVLCSharp.Avalonia"
+2. 移除第 126-131 行: <Image x:Name="DesktopVideoWallpaperImage" ... />
+3. 移除第 133-137 行: <vlc:VideoView x:Name="DesktopVideoWallpaperView" ... />
+```
+
+---
+
+## 任务 3: 移除主窗口代码视频字段
+
+**优先级**: P0  
+**依赖**: 任务 1  
+**预估工作量**: 15 分钟
+
+### 描述
+
+从 MainWindow.axaml.cs 中移除视频壁纸相关的字段声明。
+
+### 输入
+
+- `LanMountainDesktop/Views/MainWindow.axaml.cs`
+
+### 输出
+
+- 移除 `SupportedVideoExtensions` 静态字段
+- 移除所有视频相关实例字段
+
+### 验收标准
+
+- [ ] 无 `SupportedVideoExtensions` 字段
+- [ ] 无 `_videoWallpaperPosterBitmap` 字段
+- [ ] 无 `_videoWallpaperPosterPath` 字段
+- [ ] 无 `_wallpaperVideoPath` 字段
+- [ ] 无 `_libVlc` 字段
+- [ ] 无 `_videoWallpaperPlayer` 字段
+- [ ] 无 `_videoWallpaperMedia` 字段
+- [ ] 无 `_desktopVideoFrameSync` 及相关视频帧处理字段
+
+### 执行提示
+
+```
+编辑 MainWindow.axaml.cs：
+1. 移除第 68-71 行的 SupportedVideoExtensions 定义
+2. 移除第 123-146 行的所有视频相关字段
+```
+
+---
+
+## 任务 4: 移除主窗口 OnClosed 清理代码
+
+**优先级**: P0  
+**依赖**: 任务 3  
+**预估工作量**: 5 分钟
+
+### 描述
+
+从 MainWindow.axaml.cs 的 OnClosed 方法中移除视频相关清理代码。
+
+### 输入
+
+- `LanMountainDesktop/Views/MainWindow.axaml.cs` (OnClosed 方法)
+
+### 输出
+
+- 简化的 OnClosed 方法，无视频清理逻辑
+
+### 验收标准
+
+- [ ] OnClosed 方法中无 `StopVideoWallpaper()` 调用
+- [ ] OnClosed 方法中无 `_videoWallpaperMedia` 相关清理
+- [ ] OnClosed 方法中无 `_videoWallpaperPlayer` 相关清理
+- [ ] OnClosed 方法中无 `_libVlc` 相关清理
+
+### 执行提示
+
+```
+编辑 MainWindow.axaml.cs 的 OnClosed 方法，移除以下代码行：
+- StopVideoWallpaper();
+- _videoWallpaperMedia?.Dispose(); _videoWallpaperMedia = null;
+- _videoWallpaperPlayer?.Dispose(); _videoWallpaperPlayer = null;
+- _desktopVideoFrameRefreshTimer?.Stop(); _desktopVideoFrameRefreshTimer = null;
+- _videoWallpaperPosterBitmap?.Dispose(); _videoWallpaperPosterBitmap = null;
+- _videoWallpaperPosterPath = null;
+- _libVlc?.Dispose(); _libVlc = null;
+```
+
+---
+
+## 任务 5: 移除主窗口 Stub 方法
+
+**优先级**: P0  
+**依赖**: 任务 1  
+**预估工作量**: 20 分钟
+
+### 描述
+
+从 MainWindow.SettingsHardCut.Stubs.cs 中移除视频壁纸相关方法和 using 声明。
+
+### 输入
+
+- `LanMountainDesktop/Views/MainWindow.SettingsHardCut.Stubs.cs`
+
+### 输出
+
+- 移除 LibVLC using 声明
+- 移除 `StartVideoWallpaper` 方法
+- 移除 `StopVideoWallpaper` 方法
+- 移除 `TryCaptureVideoWallpaperPosterFrame` 方法
+- 移除 `ApplyVideoWallpaperPosterVisibility` 方法
+
+### 验收标准
+
+- [ ] 无 `using LibVLCSharp.Shared;`
+- [ ] 无 `using LibVLCSharp.Avalonia;`
+- [ ] 无 `StartVideoWallpaper` 方法定义
+- [ ] 无 `StopVideoWallpaper` 方法定义
+- [ ] 无 `TryCaptureVideoWallpaperPosterFrame` 方法定义
+- [ ] 无 `ApplyVideoWallpaperPosterVisibility` 方法定义
+
+### 执行提示
+
+```
+编辑 MainWindow.SettingsHardCut.Stubs.cs：
+1. 移除第 19-20 行的 using 声明
+2. 移除 StartVideoWallpaper 方法（第 337-383 行）
+3. 移除 StopVideoWallpaper 方法（第 385-395 行）
+4. 移除 ApplyVideoWallpaperPosterVisibility 方法（第 647-664 行）
+5. 移除 TryCaptureVideoWallpaperPosterFrame 方法（第 666-751 行）
+```
+
+---
+
+## 任务 6: 简化壁纸状态处理逻辑
+
+**优先级**: P0  
+**依赖**: 任务 5  
+**预估工作量**: 15 分钟
+
+### 描述
+
+修改 MainWindow.SettingsHardCut.Stubs.cs 中的壁纸状态处理方法，移除视频类型分支。
+
+### 输入
+
+- `LanMountainDesktop/Views/MainWindow.SettingsHardCut.Stubs.cs`
+
+### 输出
+
+- 简化的 `SetWallpaperState` 方法
+- 简化的 `UpdateWallpaperDisplay` 方法
+- 简化的 `ApplyWallpaperBrush` 方法
+
+### 验收标准
+
+- [ ] `SetWallpaperState` 中无视频类型检测分支
+- [ ] `SetWallpaperState` 中无 `_wallpaperVideoPath` 赋值
+- [ ] `UpdateWallpaperDisplay` 中无 `StopVideoWallpaper()` 调用
+- [ ] `ApplyWallpaperBrush` 中无 `ApplyVideoWallpaperPosterVisibility` 调用
+
+### 执行提示
+
+```
+编辑 MainWindow.SettingsHardCut.Stubs.cs：
+
+1. SetWallpaperState 方法：
+   - 移除 requestedTypeIsVideo 变量定义
+   - 移除视频类型检测 if 块（SupportedVideoExtensions.Contains 检查）
+
+2. UpdateWallpaperDisplay 方法：
+   - 移除视频类型分支，仅保留 ApplyWallpaperBrush() 调用
+
+3. ApplyWallpaperBrush 方法：
+   - 移除所有 ApplyVideoWallpaperPosterVisibility 调用
+```
+
+---
+
+## 任务 7: 移除外观主题服务视频提取器
+
+**优先级**: P1  
+**依赖**: 任务 1  
+**预估工作量**: 10 分钟
+
+### 描述
+
+从 AppearanceThemeService.cs 中移除视频壁纸种子提取器接口和实现类。
+
+### 输入
+
+- `LanMountainDesktop/Services/AppearanceThemeService.cs`
+
+### 输出
+
+- 移除 `IVideoWallpaperSeedExtractor` 接口
+- 移除 `LibVlcVideoWallpaperSeedExtractor` 类
+
+### 验收标准
+
+- [ ] 无 `IVideoWallpaperSeedExtractor` 接口定义
+- [ ] 无 `LibVlcVideoWallpaperSeedExtractor` 类定义
+
+### 执行提示
+
+```
+编辑 AppearanceThemeService.cs：
+移除第 92-184 行的接口和类定义：
+- IVideoWallpaperSeedExtractor 接口
+- LibVlcVideoWallpaperSeedExtractor 类
+```
+
+---
+
+## 任务 8: 简化壁纸设置页面 XAML
+
+**优先级**: P1  
+**依赖**: 无  
+**预估工作量**: 10 分钟
+
+### 描述
+
+从 WallpaperSettingsPage.axaml 中移除视频预览区域和相关 UI 元素。
+
+### 输入
+
+- `LanMountainDesktop/Views/SettingsPages/WallpaperSettingsPage.axaml`
+
+### 输出
+
+- 移除视频预览 Border 区域
+- 移除视频模式提示 TextBlock
+- 修改填充方式可见性绑定
+
+### 验收标准
+
+- [ ] 无视频预览 Border（IsVisible="{Binding IsVideo}"）
+- [ ] 无 VideoModeHintText 绑定的 TextBlock
+- [ ] 填充方式设置绑定改为 `IsVisible="{Binding IsImage}"`
+
+### 执行提示
+
+```
+编辑 WallpaperSettingsPage.axaml：
+1. 移除第 29-44 行的视频预览 Border
+2. 移除第 150-154 行的视频模式提示 TextBlock
+3. 修改第 132 行: IsVisible="{Binding IsImageOrVideo}" 改为 IsVisible="{Binding IsImage}"
+```
+
+---
+
+## 任务 9: 简化壁纸设置 ViewModel
+
+**优先级**: P1  
+**依赖**: 任务 8  
+**预估工作量**: 15 分钟
+
+### 描述
+
+从 WallpaperSettingsPageViewModel.cs 中移除视频相关属性和方法逻辑。
+
+### 输入
+
+- `LanMountainDesktop/ViewModels/WallpaperSettingsPageViewModel.cs`
+
+### 输出
+
+- 移除 `_isImageOrVideo`、`_isVideo`、`_videoModeHintText` 属性
+- 修改 `CreateWallpaperTypes` 方法
+- 修改 `UpdateVisibility` 方法
+- 修改 `RefreshLocalizedText` 方法
+
+### 验收标准
+
+- [ ] 无 `IsImageOrVideo` 属性
+- [ ] 无 `IsVideo` 属性
+- [ ] 无 `VideoModeHintText` 属性
+- [ ] `CreateWallpaperTypes` 仅返回 Image 和 SolidColor 选项
+- [ ] `UpdateVisibility` 中无 IsVideo、IsImageOrVideo 赋值
+- [ ] `RefreshLocalizedText` 中无 VideoModeHintText 赋值
+
+### 执行提示
+
+```
+编辑 WallpaperSettingsPageViewModel.cs：
+1. 移除第 76-77 行的 _isImageOrVideo 字段和属性
+2. 移除第 85-86 行的 _isVideo 字段和属性
+3. 移除第 94-95 行的 _videoModeHintText 字段和属性
+4. 修改 CreateWallpaperTypes 方法，移除 Video 选项
+5. 修改 UpdateVisibility 方法，移除 IsVideo 和 IsImageOrVideo 赋值
+6. 修改 RefreshLocalizedText 方法，移除 VideoModeHintText 赋值
+```
+
+---
+
+## 任务 10: 简化壁纸媒体类型枚举
+
+**优先级**: P1  
+**依赖**: 无  
+**预估工作量**: 5 分钟
+
+### 描述
+
+从 SettingsContracts.cs 中移除 WallpaperMediaType 枚举的 Video 值。
+
+### 输入
+
+- `LanMountainDesktop/Services/Settings/SettingsContracts.cs`
+
+### 输出
+
+- 简化的 `WallpaperMediaType` 枚举
+
+### 验收标准
+
+- [ ] `WallpaperMediaType` 枚举仅包含 `None` 和 `Image`
+
+### 执行提示
+
+```
+编辑 SettingsContracts.cs：
+修改第 11-16 行的枚举定义：
+public enum WallpaperMediaType
+{
+    None,
+    Image
+}
+```
+
+---
+
+## 任务 11: 简化壁纸媒体服务
+
+**优先级**: P1  
+**依赖**: 任务 10  
+**预估工作量**: 10 分钟
+
+### 描述
+
+从 SettingsDomainServices.cs 中移除视频扩展名检测逻辑。
+
+### 输入
+
+- `LanMountainDesktop/Services/Settings/SettingsDomainServices.cs`
+
+### 输出
+
+- 移除 `VideoExtensions` 字段
+- 简化 `DetectMediaType` 方法
+
+### 验收标准
+
+- [ ] 无 `VideoExtensions` 字段定义
+- [ ] `DetectMediaType` 方法中无视频扩展名检测逻辑
+
+### 执行提示
+
+```
+编辑 SettingsDomainServices.cs：
+1. 移除第 150-153 行的 VideoExtensions 字段定义
+2. 修改 DetectMediaType 方法，移除视频检测分支
+```
+
+---
+
+## 任务 12: 清理本地化文件
+
+**优先级**: P2  
+**依赖**: 无  
+**预估工作量**: 5 分钟
+
+### 描述
+
+从 zh-CN.json 中移除视频壁纸相关的本地化文本。
+
+### 输入
+
+- `LanMountainDesktop/Localization/zh-CN.json`
+
+### 输出
+
+- 移除视频相关本地化键
+- 修改壁纸描述文本
+
+### 验收标准
+
+- [ ] 无 `settings.wallpaper.type.video` 键
+- [ ] 无 `settings.wallpaper.video_applied` 键
+- [ ] 无 `settings.wallpaper.video_mode` 键
+- [ ] 无 `settings.wallpaper.video_restored` 键
+- [ ] 无 `settings.wallpaper.video_not_found` 键
+- [ ] 无 `settings.wallpaper.video_player_unavailable` 键
+- [ ] 无 `settings.wallpaper.video_play_failed_format` 键
+- [ ] `settings.wallpaper.description` 文本已更新
+
+### 执行提示
+
+```
+编辑 zh-CN.json：
+1. 移除以下键值对：
+   - "settings.wallpaper.type.video"
+   - "settings.wallpaper.video_applied"
+   - "settings.wallpaper.video_mode"
+   - "settings.wallpaper.video_restored"
+   - "settings.wallpaper.video_not_found"
+   - "settings.wallpaper.video_player_unavailable"
+   - "settings.wallpaper.video_play_failed_format"
+
+2. 修改描述文本：
+   "settings.wallpaper.description": "选择图片后可立即设为应用窗口壁纸。"
+```
+
+---
+
+## 任务 13: 构建验证
+
+**优先级**: P0  
+**依赖**: 任务 1-12 全部完成  
+**预估工作量**: 10 分钟
+
+### 描述
+
+验证项目在移除视频壁纸功能后能够正常构建。
+
+### 输入
+
+- 整个项目
+
+### 输出
+
+- 构建成功确认
+
+### 验收标准
+
+- [ ] `dotnet build` 执行成功，无编译错误
+- [ ] 无 LibVLC 相关类型未定义错误
+- [ ] 无未使用变量警告（或已处理）
+
+### 执行提示
+
+```
+在项目根目录执行：
+dotnet build LanMountainDesktop/LanMountainDesktop.csproj
+
+检查输出：
+- 确认无编译错误
+- 确认无 LibVLC 相关类型引用错误
+```
+
+---
+
+## 任务 14: 功能验证
+
+**优先级**: P0  
+**依赖**: 任务 13  
+**预估工作量**: 15 分钟
+
+### 描述
+
+验证应用在移除视频壁纸功能后核心功能正常工作。
+
+### 输入
+
+- 构建后的应用
+
+### 输出
+
+- 功能验证报告
+
+### 验收标准
+
+- [ ] 应用正常启动
+- [ ] 图片壁纸正常显示
+- [ ] 纯色壁纸正常显示
+- [ ] 壁纸设置页面正常打开
+- [ ] 类型选择器仅显示"图片"和"纯色"选项
+- [ ] 壁纸导入功能正常工作
+
+### 执行提示
+
+```
+运行应用：
+dotnet run --project LanMountainDesktop/LanMountainDesktop.csproj
+
+手动验证：
+1. 应用启动无崩溃
+2. 打开设置 -> 壁纸页面
+3. 确认类型选择器仅有"图片"和"纯色"
+4. 测试选择图片壁纸
+5. 测试选择纯色壁纸
+```
+
+---
+
+## 任务依赖关系图
+
+```
+任务 1 (移除依赖)
+  ├── 任务 2 (XAML控件)
+  ├── 任务 3 (代码字段)
+  │     └── 任务 4 (OnClosed清理)
+  ├── 任务 5 (Stub方法)
+  │     └── 任务 6 (状态处理逻辑)
+  └── 任务 7 (主题服务)
+
+任务 8 (设置页面XAML)
+  └── 任务 9 (设置ViewModel)
+
+任务 10 (枚举简化)
+  └── 任务 11 (媒体服务)
+
+任务 12 (本地化) - 独立
+
+任务 13 (构建验证) - 依赖所有任务
+  └── 任务 14 (功能验证)
+```
+
+---
+
+## 执行顺序建议
+
+按以下顺序执行可确保依赖关系正确：
+
+1. **第一批** (可并行): 任务 1, 任务 8, 任务 10, 任务 12
+2. **第二批** (可并行): 任务 2, 任务 3, 任务 5, 任务 7, 任务 9, 任务 11
+3. **第三批** (可并行): 任务 4, 任务 6
+4. **第四批**: 任务 13
+5. **第五批**: 任务 14

LanMountainDesktop.Tests/LanMountainDesktop.Tests.csproj

@@ -4,6 +4,7 @@
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
     <IsPackable>false</IsPackable>
+    <Version>1.0.0</Version>
   </PropertyGroup>
 
   <ItemGroup>

LanMountainDesktop.Tests/WhiteboardNotePersistenceServiceTests.cs

@@ -0,0 +1,157 @@
+using System;
+using System.IO;
+using LanMountainDesktop.Models;
+using LanMountainDesktop.Services;
+using Xunit;
+
+namespace LanMountainDesktop.Tests;
+
+public sealed class WhiteboardNotePersistenceServiceTests
+{
+    [Fact]
+    public void SaveNote_ThenLoadNote_RoundTripsSnapshot()
+    {
+        using var sandbox = new WhiteboardNotePersistenceSandbox();
+        var service = sandbox.CreateService();
+        var snapshot = CreateSampleSnapshot();
+
+        service.SaveNote("DesktopWhiteboard", "whiteboard-1", snapshot, retentionDays: 15);
+
+        var loaded = service.LoadNote("DesktopWhiteboard", "whiteboard-1", retentionDays: 15);
+
+        Assert.Single(loaded.Strokes);
+        Assert.Equal(2, loaded.Strokes[0].Points.Count);
+        Assert.Equal("#FF112233", loaded.Strokes[0].Color);
+        Assert.True(loaded.SavedUtc > DateTimeOffset.MinValue);
+    }
+
+    [Fact]
+    public void LoadNote_RemovesExpiredSnapshot_WhenRetentionExceeded()
+    {
+        using var sandbox = new WhiteboardNotePersistenceSandbox();
+        var service = sandbox.CreateService();
+
+        service.SaveNote("DesktopWhiteboard", "expired-board", CreateSampleSnapshot(), retentionDays: 7);
+        sandbox.OverrideSavedTimestamp("DesktopWhiteboard", "expired-board", DateTimeOffset.UtcNow.AddDays(-10), retentionDays: 7);
+
+        var loaded = service.LoadNote("DesktopWhiteboard", "expired-board", retentionDays: 7);
+
+        Assert.Empty(loaded.Strokes);
+        Assert.False(sandbox.Exists("DesktopWhiteboard", "expired-board"));
+    }
+
+    [Fact]
+    public void DeleteExpiredNotesBatch_RemovesExpiredRows_AndKeepsFreshRows()
+    {
+        using var sandbox = new WhiteboardNotePersistenceSandbox();
+        var service = sandbox.CreateService();
+
+        service.SaveNote("DesktopWhiteboard", "expired-a", CreateSampleSnapshot(), retentionDays: 7);
+        service.SaveNote("DesktopWhiteboard", "expired-b", CreateSampleSnapshot(), retentionDays: 7);
+        service.SaveNote("DesktopWhiteboard", "fresh-c", CreateSampleSnapshot(), retentionDays: 15);
+
+        sandbox.OverrideSavedTimestamp("DesktopWhiteboard", "expired-a", DateTimeOffset.UtcNow.AddDays(-9), retentionDays: 7);
+        sandbox.OverrideSavedTimestamp("DesktopWhiteboard", "expired-b", DateTimeOffset.UtcNow.AddDays(-8), retentionDays: 7);
+        sandbox.OverrideSavedTimestamp("DesktopWhiteboard", "fresh-c", DateTimeOffset.UtcNow.AddDays(-2), retentionDays: 15);
+
+        var deletedCount = service.DeleteExpiredNotesBatch(batchSize: 10);
+
+        Assert.Equal(2, deletedCount);
+        Assert.False(sandbox.Exists("DesktopWhiteboard", "expired-a"));
+        Assert.False(sandbox.Exists("DesktopWhiteboard", "expired-b"));
+        Assert.True(sandbox.Exists("DesktopWhiteboard", "fresh-c"));
+    }
+
+    private static WhiteboardNoteSnapshot CreateSampleSnapshot()
+    {
+        return new WhiteboardNoteSnapshot
+        {
+            Strokes =
+            [
+                new WhiteboardStrokeSnapshot
+                {
+                    Color = "#FF112233",
+                    InkThickness = 3.5d,
+                    IgnorePressure = true,
+                    Points =
+                    [
+                        new WhiteboardStylusPointSnapshot { X = 12, Y = 34, Pressure = 0.4d, Width = 2, Height = 2 },
+                        new WhiteboardStylusPointSnapshot { X = 48, Y = 64, Pressure = 0.7d, Width = 2, Height = 2 }
+                    ]
+                }
+            ]
+        };
+    }
+
+    private sealed class WhiteboardNotePersistenceSandbox : IDisposable
+    {
+        private readonly string _directoryPath = Path.Combine(
+            Path.GetTempPath(),
+            "LanMountainDesktop.WhiteboardNoteTests",
+            Guid.NewGuid().ToString("N"));
+
+        private readonly string _databasePath;
+
+        public WhiteboardNotePersistenceSandbox()
+        {
+            Directory.CreateDirectory(_directoryPath);
+            _databasePath = Path.Combine(_directoryPath, "whiteboard-tests.db");
+        }
+
+        public WhiteboardNotePersistenceService CreateService()
+        {
+            return new WhiteboardNotePersistenceService(new AppDatabaseService(_databasePath));
+        }
+
+        public void OverrideSavedTimestamp(string componentId, string placementId, DateTimeOffset savedUtc, int retentionDays)
+        {
+            var expiresUtc = savedUtc.AddDays(WhiteboardNoteRetentionPolicy.NormalizeDays(retentionDays));
+            using var connection = new AppDatabaseService(_databasePath).OpenConnection();
+            using var command = connection.CreateCommand();
+            command.CommandText = """
+                UPDATE whiteboard_notes
+                SET saved_at_utc_ms = $savedAtUtcMs,
+                    expires_at_utc_ms = $expiresAtUtcMs,
+                    updated_at_utc_ms = $updatedAtUtcMs
+                WHERE component_id = $componentId
+                  AND placement_id = $placementId;
+                """;
+            command.Parameters.AddWithValue("$savedAtUtcMs", savedUtc.ToUnixTimeMilliseconds());
+            command.Parameters.AddWithValue("$expiresAtUtcMs", expiresUtc.ToUnixTimeMilliseconds());
+            command.Parameters.AddWithValue("$updatedAtUtcMs", DateTimeOffset.UtcNow.ToUnixTimeMilliseconds());
+            command.Parameters.AddWithValue("$componentId", componentId);
+            command.Parameters.AddWithValue("$placementId", placementId);
+            command.ExecuteNonQuery();
+        }
+
+        public bool Exists(string componentId, string placementId)
+        {
+            using var connection = new AppDatabaseService(_databasePath).OpenConnection();
+            using var command = connection.CreateCommand();
+            command.CommandText = """
+                SELECT COUNT(1)
+                FROM whiteboard_notes
+                WHERE component_id = $componentId
+                  AND placement_id = $placementId;
+                """;
+            command.Parameters.AddWithValue("$componentId", componentId);
+            command.Parameters.AddWithValue("$placementId", placementId);
+            return Convert.ToInt32(command.ExecuteScalar()) > 0;
+        }
+
+        public void Dispose()
+        {
+            try
+            {
+                if (Directory.Exists(_directoryPath))
+                {
+                    Directory.Delete(_directoryPath, true);
+                }
+            }
+            catch
+            {
+                // Temporary test directories are best-effort cleanup.
+            }
+        }
+    }
+}

LanMountainDesktop/App.axaml.cs

@@ -67,6 +67,15 @@ public partial class App : Application
     internal static IHostApplicationLifecycle? CurrentHostApplicationLifecycle =>
         (Current as App)?._hostApplicationLifecycle;
 
+    // 隐私政策查看事件
+    public static event Action? CurrentPrivacyPolicyViewRequested;
+
+    // 触发隐私政策查看事件的方法
+    public static void RaisePrivacyPolicyViewRequested()
+    {
+        CurrentPrivacyPolicyViewRequested?.Invoke();
+    }
+
     public PluginRuntimeService? PluginRuntimeService => _pluginRuntimeService;
     public ISettingsFacadeService SettingsFacade => _settingsFacade;
     public IHostApplicationLifecycle HostApplicationLifecycle => _hostApplicationLifecycle;
@@ -501,6 +510,8 @@ public partial class App : Application
 
             if (languageChanged)
             {
+                // 清除本地化缓存，强制重新加载语言文件
+                _localizationService.ClearCache();
                 ApplyCurrentCultureFromSettings();
                 if (_trayIcons is not null)
                 {

LanMountainDesktop/Assets/Documents/Privacy.md

@@ -0,0 +1,326 @@
+# LanMountainDesktop 隐私政策
+
+**最后更新日期：2026年3月17日**
+
+---
+
+## 引言
+
+欢迎使用 LanMountainDesktop！我们非常重视您的隐私保护。本隐私政策旨在向您说明我们如何收集、使用、存储和保护您的数据。
+
+**请在使用本应用前仔细阅读本隐私政策。使用本应用即表示您同意本政策的条款。**
+
+---
+
+## 1. 数据收集范围
+
+### 1.1 我们收集的数据
+
+当您启用匿名数据收集功能时，我们会收集以下数据：
+
+#### 匿名崩溃数据
+- **崩溃报告**：应用崩溃时的错误日志和堆栈跟踪
+- **设备信息**：操作系统版本、设备型号、架构（x64/x86）
+- **应用版本**：当前使用的应用版本号
+- **设备标识符**：匿名生成的唯一设备ID（不包含个人信息）
+
+#### 匿名使用数据
+- **应用启动和关闭事件**：记录应用何时启动和关闭
+- **功能使用统计**：哪些功能被使用、使用频率
+- **设置变更**：用户更改了哪些设置（不包含具体设置值）
+- **界面交互**：点击了哪些按钮、访问了哪些页面
+- **设备信息**：操作系统、应用版本、设备类型
+
+### 1.2 始终收集的基础数据
+
+**重要说明：** 为了统计应用的用户数量和日活跃用户，即使您关闭了匿名数据收集开关，我们仍会收集以下基础数据：
+
+- ✅ **应用启动事件**：用于统计日活跃用户
+- ✅ **设备标识符**：用于区分不同用户（不包含个人信息）
+- ✅ **应用版本**：用于统计版本分布
+
+**这些基础数据不包含任何个人身份信息，仅用于统计用户数量和应用使用情况。**
+
+### 1.3 我们不收集的数据
+
+我们**明确承诺不收集**以下数据：
+
+- ❌ 个人身份信息（姓名、邮箱、电话等）
+- ❌ 真实姓名或用户名
+- ❌ 地理位置信息（精确位置）
+- ❌ 文件内容或文档数据
+- ❌ 密码或凭据信息
+- ❌ 网络浏览历史
+- ❌ 联系人信息
+- ❌ 照片、视频或音频文件
+
+---
+
+## 2. 数据收集目的
+
+我们收集数据的目的如下：
+
+### 2.1 基础数据用途（始终收集）
+- **统计用户数量**：了解应用的用户规模
+- **统计日活跃用户**：了解应用的活跃程度
+- **版本分布统计**：了解用户使用的版本情况
+
+### 2.2 崩溃数据用途
+- **提高应用稳定性**：识别和修复崩溃问题
+- **优化性能**：分析性能瓶颈
+- **改进用户体验**：了解应用在不同设备上的表现
+
+### 2.3 使用数据用途
+- **功能优化**：了解哪些功能最受欢迎，优先改进
+- **用户体验改进**：优化界面设计和交互流程
+- **统计分析**：了解用户规模和使用趋势
+- **产品决策**：基于数据做出产品发展方向决策
+
+---
+
+## 3. 数据存储和处理
+
+### 3.1 数据存储位置
+
+我们使用以下第三方服务存储和处理数据：
+
+#### Sentry（崩溃报告）
+- **用途**：崩溃数据收集和分析
+- **位置**：美国
+- **官网**：https://sentry.io
+- **隐私政策**：https://sentry.io/privacy/
+
+#### PostHog（使用分析）
+- **用途**：用户行为分析和统计
+- **位置**：美国
+- **官网**：https://posthog.com
+- **隐私政策**：https://posthog.com/privacy
+
+### 3.2 数据保留期限
+
+- **崩溃数据**：保留90天后自动删除
+- **使用数据**：保留12个月后自动删除
+- **设备标识符**：永久保留（用于统计日活用户）
+
+### 3.3 数据安全措施
+
+我们采取以下安全措施保护您的数据：
+
+- ✅ 数据传输使用HTTPS加密
+- ✅ 数据存储使用加密技术
+- ✅ 访问权限严格控制
+- ✅ 定期安全审计
+
+---
+
+## 4. 数据共享
+
+### 4.1 我们不会出售您的数据
+
+我们**明确承诺**：
+- ❌ 不会出售您的个人数据
+- ❌ 不会将您的数据用于广告目的
+- ❌ 不会与第三方共享可识别个人的数据
+
+### 4.2 必要的共享
+
+我们仅在以下情况下共享数据：
+
+- **服务提供商**：与Sentry和PostHog共享数据以提供服务
+- **法律要求**：在法律要求或政府机构合法要求时
+
+---
+
+## 5. 您的权利
+
+### 5.1 选择权
+
+您完全控制详细数据收集：
+
+- **匿名崩溃数据**：可在设置中开启或关闭
+- **匿名使用数据**：可在设置中开启或关闭
+- **基础数据**：始终收集（用于统计用户数量）
+
+**注意：** 即使关闭所有开关，我们仍会收集基础数据（应用启动事件和设备标识符）以统计用户数量。
+
+### 5.2 数据访问权
+
+您可以：
+- 查看我们收集的数据类型
+- 了解数据的使用目的
+- 了解数据的存储位置
+
+### 5.3 数据删除权
+
+您可以：
+- 随时关闭详细数据收集功能
+- 删除本地存储的设备标识符
+- 联系我们删除已收集的数据
+
+---
+
+## 6. 设备标识符
+
+### 6.1 什么是设备标识符？
+
+设备标识符是一个随机生成的唯一字符串，用于：
+- 统计日活用户数量
+- 区分不同设备
+- 分析用户使用趋势
+
+### 6.2 设备标识符的特点
+
+- **匿名性**：不包含任何个人信息
+- **随机性**：通过SHA256算法生成
+- **唯一性**：每个设备有唯一标识符
+- **持久性**：即使刷新设备ID，仍能关联到同一用户
+- **可重置**：您可以在设置中刷新设备标识符
+
+### 6.3 设备标识符刷新
+
+当您刷新设备标识符时：
+- 生成新的设备ID
+- **持久用户ID保持不变**，确保仍能关联到同一用户
+- 统计数据不会丢失
+
+### 6.4 设备标识符示例
+
+```
+a1b2c3d4e5f6g7h8i9j0k1l2m3n4o5p6
+```
+
+---
+
+## 7. 儿童隐私保护
+
+本应用不面向13岁以下儿童。我们不会故意收集儿童的个人信息。如果您发现我们无意中收集了儿童的数据，请联系我们，我们将立即删除相关数据。
+
+---
+
+## 8. 国际数据传输
+
+由于我们的服务提供商位于美国，您的数据可能会被传输到美国。我们确保：
+
+- 数据传输符合相关法律法规
+- 服务提供商遵守GDPR等隐私法规
+- 采取适当的安全措施保护数据
+
+---
+
+## 9. 隐私政策更新
+
+我们可能会不时更新本隐私政策。更新时，我们将：
+
+- 在本页面更新"最后更新日期"
+- 在应用内通知您重大变更
+- 继续使用应用即表示您同意更新后的政策
+
+---
+
+## 10. 联系我们
+
+如果您对本隐私政策有任何疑问或建议，请通过以下方式联系我们：
+
+- **GitHub Issues**：https://github.com/wwiinnddyy/LanMountainDesktop/issues
+- **电子邮件**：[您的邮箱地址]
+
+---
+
+## 11. 法律依据
+
+### 11.1 GDPR合规
+
+如果您位于欧洲经济区（EEA），我们的数据处理基于：
+
+- **同意**：您明确同意数据收集
+- **合法利益**：改进应用性能和用户体验
+
+### 11.2 CCPA合规
+
+如果您是加州居民，您有权：
+
+- 知道我们收集了哪些数据
+- 要求删除您的数据
+- 选择退出数据销售（我们不销售数据）
+
+---
+
+## 12. 第三方链接
+
+本应用可能包含第三方网站链接。我们不对这些网站的隐私政策负责。请阅读这些网站的隐私政策。
+
+---
+
+## 13. 数据收集示例
+
+### 13.1 崩溃报告示例
+
+```json
+{
+  "event_id": "abc123",
+  "timestamp": "2024-01-01T12:00:00Z",
+  "device_id": "a1b2c3d4e5f6g7h8i9j0k1l2m3n4o5p6",
+  "app_version": "1.0.0",
+  "os_name": "Windows",
+  "os_version": "10.0.19041",
+  "error_message": "NullReferenceException",
+  "stack_trace": "..."
+}
+```
+
+### 13.2 使用数据示例
+
+```json
+{
+  "event": "app_online",
+  "timestamp": "2024-01-01T12:00:00Z",
+  "distinct_id": "a1b2c3d4e5f6g7h8i9j0k1l2m3n4o5p6",
+  "properties": {
+    "app_version": "1.0.0",
+    "os_name": "Windows",
+    "event_type": "app_start",
+    "analytics_enabled": true
+  }
+}
+```
+
+### 13.3 基础数据示例（始终收集）
+
+```json
+{
+  "event": "$pageview",
+  "timestamp": "2024-01-01T12:00:00Z",
+  "distinct_id": "a1b2c3d4e5f6g7h8i9j0k1l2m3n4o5p6",
+  "properties": {
+    "$current_url": "app://main",
+    "$title": "LanMountainDesktop"
+  }
+}
+```
+
+---
+
+## 14. 您的同意
+
+使用本应用即表示您：
+
+- ✅ 已阅读并理解本隐私政策
+- ✅ 同意我们按照本政策收集和使用数据
+- ✅ 了解您可以随时撤回同意（详细数据收集）
+- ✅ 了解基础数据将始终收集以统计用户数量
+
+---
+
+## 15. 免责声明
+
+本隐私政策仅适用于 LanMountainDesktop 应用。我们不对以下情况负责：
+
+- 第三方服务的隐私政策
+- 您自行分享的数据
+- 不可抗力导致的数据泄露
+
+---
+
+**感谢您信任阑山桌面LanMountainDesktop！**
+
+我们承诺保护您的隐私，并持续改进我们的隐私保护措施。

LanMountainDesktop/ComponentSystem/BuiltInComponentIds.cs

@@ -41,4 +41,5 @@ public static class BuiltInComponentIds
     public const string DesktopBlackboardLandscape = "DesktopBlackboardLandscape";
     public const string DesktopBrowser = "DesktopBrowser";
     public const string DesktopOfficeRecentDocuments = "DesktopOfficeRecentDocuments";
+    public const string DesktopRemovableStorage = "DesktopRemovableStorage";
 }

LanMountainDesktop/ComponentSystem/ComponentRegistry.cs

@@ -336,6 +336,15 @@ public sealed class ComponentRegistry
                 MinHeightCells: 2,
                 AllowStatusBarPlacement: false,
                 AllowDesktopPlacement: true),
+            new DesktopComponentDefinition(
+                BuiltInComponentIds.DesktopRemovableStorage,
+                "Removable Storage",
+                "Storage",
+                "File",
+                MinWidthCells: 2,
+                MinHeightCells: 2,
+                AllowStatusBarPlacement: false,
+                AllowDesktopPlacement: true),
             new DesktopComponentDefinition(
                 BuiltInComponentIds.Date,
                 "Calendar",

LanMountainDesktop/LanMountainDesktop.csproj

@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <OutputType>WinExe</OutputType>
     <TargetFramework>net10.0</TargetFramework>
@@ -21,6 +21,9 @@
   <ItemGroup>
     <Folder Include="Models\" />
     <AvaloniaResource Include="Assets\**" />
+    <AvaloniaResource Include="Localization\**" />
+    <EmbeddedResource Include="Assets\Documents\Privacy.md" />
+    <EmbeddedResource Include="Localization\*.json" />
     <None Include="Localization\*.json" CopyToOutputDirectory="PreserveNewest" />
     <None Include="Extensions\Components\*.json" CopyToOutputDirectory="PreserveNewest" />
   </ItemGroup>
@@ -52,15 +55,18 @@
     <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="10.0.0" />
     <PackageReference Include="Microsoft.Extensions.Hosting.Abstractions" Version="10.0.0" />
     <PackageReference Include="Microsoft.Data.Sqlite" Version="10.0.0" />
-    <PackageReference Include="LibVLCSharp.Avalonia" Version="3.9.5" />
+    <PackageReference Include="MudTools.OfficeInterop" Version="2.0.8" />
+    <PackageReference Include="MudTools.OfficeInterop.Word" Version="2.0.8" />
+    <PackageReference Include="MudTools.OfficeInterop.Excel" Version="2.0.8" />
+    <PackageReference Include="MudTools.OfficeInterop.PowerPoint" Version="2.0.8" />
+
     <PackageReference Include="PortAudioSharp2" Version="1.0.6" />
     <PackageReference Include="MaterialColorUtilities" Version="0.3.0" />
     <PackageReference Include="PostHog" Version="2.4.0" />
     <PackageReference Include="Sentry" Version="4.0.0" />
     <PackageReference Include="System.Runtime.WindowsRuntime" Version="4.7.0" />
     <PackageReference Include="System.Drawing.Common" Version="10.0.0" />
-    <PackageReference Include="VideoLAN.LibVLC.Windows" Version="3.0.23" Condition="('$(RuntimeIdentifier)' == '' and $([MSBuild]::IsOSPlatform('Windows')))&#xA;                              or '$(RuntimeIdentifier)' == 'win-x64'&#xA;                              or '$(RuntimeIdentifier)' == 'win-x86'" />
-    <PackageReference Include="VideoLAN.LibVLC.Mac" Version="3.1.3.1" Condition="('$(RuntimeIdentifier)' == '' and $([MSBuild]::IsOSPlatform('OSX')))&#xA;                              or '$(RuntimeIdentifier)' == 'osx-x64'" />
+
     <PackageReference Include="WebView.Avalonia" Version="11.0.0.1" />
     <PackageReference Include="WebView.Avalonia.Desktop" Version="11.0.0.1" />
     <PackageReference Include="YamlDotNet" Version="16.3.0" />

LanMountainDesktop/Localization/en-US.json

@@ -7,7 +7,12 @@
     "tray.menu.restart":  "Restart App",
     "tray.menu.exit":  "Exit App",
     "button.back_to_windows":  "Back to Windows",
+    "button.back_to_platform": "Back to {0}",
     "tooltip.back_to_windows":  "Back to Windows",
+    "tooltip.back_to_platform": "Back to {0}",
+    "platform.windows": "Windows",
+    "platform.linux": "Linux",
+    "platform.macos": "macOS",
     "tooltip.open_settings":  "Settings",
     "settings.title":  "Settings",
     "settings.shell.title":  "Settings",
@@ -86,6 +91,8 @@
     "settings.status_bar.description":  "Choose which components appear on the top status bar.",
     "settings.status_bar.clock_header":  "Clock Component",
     "settings.status_bar.clock_description":  "Display a clock on the top status bar.",
+    "settings.status_bar.clock_transparent_background_label":  "Transparent background",
+    "settings.status_bar.clock_transparent_background_desc":  "Remove the capsule background and keep only the clock text.",
     "settings.status_bar.spacing_header":  "Component Spacing",
     "settings.status_bar.spacing_desc":  "Adjust spacing between status bar components.",
     "settings.status_bar.spacing_mode_compact":  "Compact",
@@ -99,6 +106,11 @@
     "settings.privacy.crash_upload_description":  "Help us improve application stability.",
     "settings.privacy.usage_upload_title":  "Anonymous usage data uploads",
     "settings.privacy.usage_upload_description":  "Help us improve application features.",
+    "settings.privacy.device_id_title":  "Device ID",
+    "settings.privacy.device_id_description":  "Unique identifier for this device. Click refresh to regenerate.",
+    "settings.privacy.refresh_device_id":  "Refresh",
+    "settings.privacy.policy_hint_prefix":  "For more details, please ",
+    "settings.privacy.view_policy":  "view our privacy policy",
     "settings.weather.title":  "Weather",
     "settings.weather.description":  "Configure weather location, Xiaomi weather preview, and startup positioning behavior.",
     "settings.weather.location_source_header":  "Location Source",
@@ -398,6 +410,7 @@
     "common.monet":  "Monet",
     "desktop.page_index_format":  "Desktop {0}",
     "launcher.title":  "App Launcher",
+    "launcher.folder": "Folder",
     "launcher.subtitle":  "Apps and folders from Windows Start Menu",
     "launcher.subtitle_linux":  "Installed apps discovered from Linux desktop entries",
     "launcher.empty":  "No Start Menu entries found.",
@@ -554,6 +567,7 @@
     "component_category.info":  "Info",
     "component_category.calculator":  "Calculator",
     "component_category.study":  "Study",
+    "component_category.file":  "File",
     "component.date":  "Calendar",
     "component.month_calendar":  "Month Calendar",
     "component.lunar_calendar":  "Lunar Calendar",
@@ -582,6 +596,19 @@
     "component.blackboard_landscape":  "Blackboard (Landscape)",
     "component.browser":  "Browser",
     "component.office_recent_documents":  "Recent Documents",
+    "whiteboard.settings.desc": "Each blackboard keeps its own note history and saves it independently.",
+    "whiteboard.settings.retention.title": "Note retention",
+    "whiteboard.settings.retention.desc": "Choose how long this blackboard should keep saved notes before expired data is removed automatically.",
+    "whiteboard.settings.retention.option": "{0} days",
+    "whiteboard.settings.instance_scope": "This retention setting is stored per blackboard component instance.",
+    "office_recent_documents.settings.desc":  "Choose which Windows and Office sources this widget should scan for recent documents.",
+    "office_recent_documents.settings.sources_title":  "Recent document sources",
+    "office_recent_documents.settings.sources_desc":  "You can combine multiple sources. Registry selection also keeps the Office interop MRU fallback available.",
+    "office_recent_documents.settings.source.registry":  "Office registry MRU",
+    "office_recent_documents.settings.source.recent_folders":  "Windows Recent folders",
+    "office_recent_documents.settings.source.jump_lists":  "Windows Jump Lists",
+    "office_recent_documents.settings.hint":  "If you disable all sources, this widget will stay empty until at least one source is enabled again.",
+    "component.removable_storage":  "Removable Storage",
     "component.holiday_calendar":  "Holiday Calendar",
     "component.study_environment":  "Environment",
     "component.study_session_control":  "Study Session Control",
@@ -783,6 +810,20 @@
     "study.environment.settings.show_display_db":  "Show display dB",
     "study.environment.settings.show_dbfs":  "Show dBFS",
     "study.environment.settings.hint":  "At least one display mode must stay enabled.",
+    "removable_storage.settings.desc":  "Show a connected USB drive with quick open and eject actions.",
+    "removable_storage.settings.behavior_title":  "Behavior",
+    "removable_storage.settings.behavior_desc":  "The widget automatically watches for removable drives and switches to the newest inserted USB drive.",
+    "removable_storage.action.open":  "Open",
+    "removable_storage.action.eject":  "Eject",
+    "removable_storage.widget.default_name":  "Removable Drive",
+    "removable_storage.widget.empty_title":  "No device inserted",
+    "removable_storage.widget.empty_subtitle":  "Insert a USB drive to show it here.",
+    "removable_storage.widget.empty_hint":  "Buttons stay disabled until a removable device is inserted.",
+    "removable_storage.widget.ready":  "Ready to open or eject.",
+    "removable_storage.widget.ejecting":  "Ejecting drive...",
+    "removable_storage.widget.eject_failed":  "Could not eject this drive. Close any files on it and try again.",
+    "removable_storage.widget.open_failed":  "Failed to open this drive.",
+    "removable_storage.widget.refresh_failed":  "Drive list refresh failed.",
     "study.session_control.action.start":  "Start Study Session",
     "study.session_control.action.stop":  "Stop Study Session",
     "study.session_control.idle_hint":  "Tap the right button to start",
@@ -887,5 +928,7 @@
     "placement.tile":  "Tile",
     "single_instance.notice.title":  "App already running",
     "single_instance.notice.description":  "The app is already running. There is no need to click multiple times to open it.",
-    "single_instance.notice.button":  "OK"
+    "single_instance.notice.button":  "OK",
+    "market.status.install_success_restart_format":  "✓ Plugin '{0}' installed successfully! Please restart the application to activate it.",
+    "market.dialog.restart_message_format":  "Plugin '{0}' has been installed successfully.\n\nTo use this plugin, you need to restart the application now.\n\nWould you like to restart?"
   }

LanMountainDesktop/Localization/zh-CN.json

@@ -7,7 +7,12 @@
     "tray.menu.restart":  "重启应用",
     "tray.menu.exit":  "退出应用",
     "button.back_to_windows":  "回到Windows",
+    "button.back_to_platform": "回到{0}",
     "tooltip.back_to_windows":  "回到Windows",
+    "tooltip.back_to_platform": "回到{0}",
+    "platform.windows": "Windows",
+    "platform.linux": "Linux",
+    "platform.macos": "macOS",
     "tooltip.open_settings":  "设置",
     "settings.title":  "设置",
     "settings.shell.title":  "设置",
@@ -31,13 +36,14 @@
     "settings.nav.plugins":  "插件",
     "settings.nav.about":  "关于",
     "settings.wallpaper.title":  "壁纸",
-    "settings.wallpaper.description":  "选择图片或视频后可立即设为应用窗口壁纸。",
+    "settings.wallpaper.description":  "选择图片后可立即设为应用窗口壁纸。",
     "settings.wallpaper.current_label":  "当前壁纸",
     "settings.wallpaper.type_label":  "壁纸类型",
     "settings.wallpaper.type.image":  "图片",
-    "settings.wallpaper.type.video":  "视频",
     "settings.wallpaper.type.solid_color":  "纯色",
     "settings.wallpaper.color_label":  "壁纸颜色",
+    "settings.wallpaper.custom_color_tooltip":  "自定义颜色",
+    "settings.wallpaper.custom_color_apply":  "应用",
     "settings.wallpaper.placement_label":  "显示方式",
     "settings.wallpaper.placement_desc":  "调整图像在桌面上的填充方式。",
     "settings.wallpaper.pick_button":  "选择文件",
@@ -46,20 +52,14 @@
     "settings.wallpaper.storage_unavailable":  "存储提供器不可用。",
     "settings.wallpaper.import_failed":  "导入壁纸文件失败。",
     "settings.wallpaper.image_applied":  "图片壁纸已应用。",
-    "settings.wallpaper.video_applied":  "视频壁纸已应用。",
     "settings.wallpaper.unsupported_file":  "所选文件类型不受支持。",
     "settings.wallpaper.apply_failed_format":  "应用壁纸失败：{0}",
     "settings.wallpaper.mode_format":  "壁纸模式：{0}。",
-    "settings.wallpaper.video_mode":  "视频壁纸使用自动填充模式。",
     "settings.wallpaper.cleared":  "背景已恢复为纯色。",
     "settings.wallpaper.default_status":  "当前使用纯色背景。",
     "settings.wallpaper.saved_not_found":  "未找到已保存的壁纸文件，已使用纯色背景。",
     "settings.wallpaper.restored":  "已恢复保存的壁纸。",
-    "settings.wallpaper.video_restored":  "已恢复保存的视频壁纸。",
     "settings.wallpaper.restore_failed":  "恢复已保存壁纸失败，已使用纯色背景。",
-    "settings.wallpaper.video_not_found":  "未找到视频壁纸文件。",
-    "settings.wallpaper.video_player_unavailable":  "视频播放器不可用。",
-    "settings.wallpaper.video_play_failed_format":  "播放视频壁纸失败：{0}",
     "settings.grid.title":  "网格布局",
     "settings.grid.description":  "每个组件至少占用一个格子（最小 1x1）。",
     "settings.grid.short_side_label":  "短边格数",
@@ -85,12 +85,13 @@
     "settings.color.theme_ready_format":  "主题色已就绪：{0}。",
     "settings.color.theme_applied_format":  "{0}主题色已应用：{1}。",
     "settings.color.theme_updated_wallpaper":  "壁纸已更新，莫奈色已刷新。",
-    "settings.color.theme_updated_video":  "视频壁纸已更新，主题色已刷新。",
     "settings.color.theme_cleared_wallpaper":  "壁纸已清除，莫奈色已刷新。",
     "settings.status_bar.title":  "状态栏",
     "settings.status_bar.description":  "选择顶部状态栏显示的组件。",
     "settings.status_bar.clock_header":  "时间组件",
     "settings.status_bar.clock_description":  "在顶部状态栏显示时钟。",
+    "settings.status_bar.clock_transparent_background_label":  "透明背景",
+    "settings.status_bar.clock_transparent_background_desc":  "移除胶囊背景，仅保留时钟文字。",
     "settings.status_bar.spacing_header":  "组件间距",
     "settings.status_bar.spacing_desc":  "调整状态栏组件之间的间距。",
     "settings.status_bar.spacing_mode_compact":  "紧凑",
@@ -104,6 +105,11 @@
     "settings.privacy.crash_upload_description":  "帮助我们提高应用稳定性。",
     "settings.privacy.usage_upload_title":  "匿名上传使用数据",
     "settings.privacy.usage_upload_description":  "帮助我们改善应用功能。",
+    "settings.privacy.device_id_title":  "设备标识符",
+    "settings.privacy.device_id_description":  "此设备的唯一标识符。点击刷新以重新生成。",
+    "settings.privacy.refresh_device_id":  "刷新",
+    "settings.privacy.policy_hint_prefix":  "了解更多详情，请",
+    "settings.privacy.view_policy":  "查看我们的隐私政策",
     "settings.weather.title":  "天气",
     "settings.weather.description":  "配置天气位置、小米天气预览和启动时的位置刷新行为。",
     "settings.weather.location_source_header":  "位置来源",
@@ -393,7 +399,6 @@
     "settings.footer":  "LanMountainDesktop 设置",
     "filepicker.title":  "选择壁纸",
     "filepicker.image_files":  "图片文件",
-    "filepicker.video_files":  "视频文件",
     "common.day":  "日间",
     "common.night":  "夜间",
     "common.back":  "返回",
@@ -403,6 +408,7 @@
     "common.monet":  "莫奈",
     "desktop.page_index_format":  "桌面 {0}",
     "launcher.title":  "应用启动台",
+    "launcher.folder": "文件夹",
     "launcher.subtitle":  "按 Windows 开始菜单结构显示所有应用与文件夹",
     "launcher.subtitle_linux":  "显示从 Linux .desktop 条目扫描到的已安装应用",
     "launcher.empty":  "未找到开始菜单条目。",
@@ -559,6 +565,7 @@
     "component_category.info":  "信息推荐",
     "component_category.calculator":  "计算器",
     "component_category.study":  "自习",
+    "component_category.file":  "文件",
     "component.date":  "日历",
     "component.month_calendar":  "月历",
     "component.lunar_calendar":  "农历",
@@ -587,6 +594,18 @@
     "component.blackboard_landscape":  "横向小黑板",
     "component.browser":  "浏览器",
     "component.office_recent_documents":  "最近文档",
+    "whiteboard.settings.desc": "每个小黑板都会独立保存自己的笔记历史。",
+    "whiteboard.settings.retention.title": "笔记保留时间",
+    "whiteboard.settings.retention.desc": "选择这个小黑板在过期笔记被自动删除前，应当保留已保存笔记多久。",
+    "whiteboard.settings.retention.option": "{0} 天",
+    "whiteboard.settings.instance_scope": "这个保留时间设置会按每个小黑板组件实例单独存储。",
+    "office_recent_documents.settings.desc":  "选择此小组件需要扫描的 Windows 和 Office 最近文档来源。",
+    "office_recent_documents.settings.sources_title":  "最近文档来源",
+    "office_recent_documents.settings.sources_desc":  "可以同时选择多个来源。勾选注册表来源时，还会保留 Office interop 的 MRU 回退。",
+    "office_recent_documents.settings.source.registry":  "Office 注册表 MRU",
+    "office_recent_documents.settings.source.recent_folders":  "Windows 最近文件夹",
+    "office_recent_documents.settings.source.jump_lists":  "Windows 跳转列表",
+    "office_recent_documents.settings.hint":  "如果关闭全部来源，此小组件会保持空白，直到再次至少启用一个来源。",
     "component.holiday_calendar":  "节假日日历",
     "component.study_environment":  "环境",
     "component.study_session_control":  "自习时段控制",
@@ -783,6 +802,21 @@
     "study.environment.value.unavailable":  "--",
     "study.environment.value.display_format":  "{0:F1} dB",
     "study.environment.value.dbfs_format":  "{0:F1} dBFS",
+    "component.removable_storage":  "可移动存储",
+    "removable_storage.settings.desc":  "在桌面上显示已连接的 U 盘，并提供打开与弹出操作。",
+    "removable_storage.settings.behavior_title":  "行为",
+    "removable_storage.settings.behavior_desc":  "组件会自动监听可移动存储设备，并优先显示最新插入的 U 盘。",
+    "removable_storage.action.open":  "打开",
+    "removable_storage.action.eject":  "弹出",
+    "removable_storage.widget.default_name":  "可移动磁盘",
+    "removable_storage.widget.empty_title":  "未插入设备",
+    "removable_storage.widget.empty_subtitle":  "插入 U 盘后会自动显示在这里。",
+    "removable_storage.widget.empty_hint":  "在插入可移动设备之前，底部按钮会保持置灰不可点击。",
+    "removable_storage.widget.ready":  "已准备好，可直接打开或弹出。",
+    "removable_storage.widget.ejecting":  "正在弹出设备...",
+    "removable_storage.widget.eject_failed":  "无法弹出该设备，请先关闭正在占用它的文件后再试。",
+    "removable_storage.widget.open_failed":  "打开该设备失败。",
+    "removable_storage.widget.refresh_failed":  "刷新可移动存储列表失败。",
     "study.environment.settings.title":  "环境组件设置",
     "study.environment.settings.desc":  "配置右侧实时噪音值显示内容。",
     "study.environment.settings.show_display_db":  "显示 display dB",
@@ -892,5 +926,7 @@
     "placement.tile":  "平铺",
     "single_instance.notice.title":  "应用已经运行",
     "single_instance.notice.description":  "应用已经运行，无需多次点击打开。",
-    "single_instance.notice.button":  "确定"
+    "single_instance.notice.button":  "确定",
+    "market.status.install_success_restart_format":  "✓ 插件'{0}'安装成功！请重启应用以激活它。",
+    "market.dialog.restart_message_format":  "插件'{0}'已成功安装。\n\n要使用此插件，您需要立即重启应用。\n\n是否立即重启？"
   }

LanMountainDesktop/Models/AppSettingsSnapshot.cs

@@ -62,8 +62,6 @@ public sealed class AppSettingsSnapshot
 
     public string AppRenderMode { get; set; } = "Default";
 
-    public bool AutoCheckUpdates { get; set; } = true;
-
     public bool IncludePrereleaseUpdates { get; set; }
 
     public bool UploadAnonymousCrashData { get; set; }
@@ -72,6 +70,8 @@ public sealed class AppSettingsSnapshot
 
     public string? DeviceId { get; set; }
 
+    public string? PersistentUserId { get; set; }
+
     public string UpdateChannel { get; set; } = "stable";
 
     public string UpdateMode { get; set; } = "download_then_confirm";
@@ -101,6 +101,8 @@ public sealed class AppSettingsSnapshot
 
     public string ClockDisplayFormat { get; set; } = "HourMinuteSecond";
 
+    public bool StatusBarClockTransparentBackground { get; set; }
+
     public string StatusBarSpacingMode { get; set; } = "Relaxed";
 
     public int StatusBarCustomSpacingPercent { get; set; } = 12;

LanMountainDesktop/Models/ComponentSettingsSnapshot.cs

@@ -58,12 +58,16 @@ public sealed class ComponentSettingsSnapshot
 
     public int WeatherAutoRefreshIntervalMinutes { get; set; } = 12;
 
+    public int WhiteboardNoteRetentionDays { get; set; } = 15;
+
     public bool Stcn24ForumAutoRefreshEnabled { get; set; } = true;
 
     public int Stcn24ForumAutoRefreshIntervalMinutes { get; set; } = 20;
 
     public string Stcn24ForumSourceType { get; set; } = Stcn24ForumSourceTypes.LatestCreated;
 
+    public List<string>? OfficeRecentDocumentsEnabledSources { get; set; }
+
     public ComponentSettingsSnapshot Clone()
     {
         var clone = (ComponentSettingsSnapshot)MemberwiseClone();
@@ -91,6 +95,9 @@ public sealed class ComponentSettingsSnapshot
         clone.WorldClockTimeZoneIds = WorldClockTimeZoneIds is { Count: > 0 }
             ? new List<string>(WorldClockTimeZoneIds)
             : [];
+        clone.OfficeRecentDocumentsEnabledSources = OfficeRecentDocumentsEnabledSources is not null
+            ? new List<string>(OfficeRecentDocumentsEnabledSources)
+            : null;
 
         return clone;
     }

LanMountainDesktop/Models/OfficeRecentDocumentSourceTypes.cs

@@ -0,0 +1,53 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+
+namespace LanMountainDesktop.Models;
+
+public static class OfficeRecentDocumentSourceTypes
+{
+    public const string Registry = "registry";
+    public const string RecentFolders = "recent_folders";
+    public const string JumpLists = "jump_lists";
+
+    public static IReadOnlyList<string> SupportedValues { get; } =
+    [
+        Registry,
+        RecentFolders,
+        JumpLists
+    ];
+
+    public static IReadOnlyList<string> DefaultValues => SupportedValues;
+
+    public static IReadOnlyList<string> NormalizeValues(IEnumerable<string>? values, bool useDefaultWhenEmpty)
+    {
+        if (values is null)
+        {
+            return useDefaultWhenEmpty ? DefaultValues : Array.Empty<string>();
+        }
+
+        var normalized = values
+            .Select(NormalizeValue)
+            .OfType<string>()
+            .Distinct(StringComparer.OrdinalIgnoreCase)
+            .ToArray();
+
+        if (normalized.Length == 0 && useDefaultWhenEmpty)
+        {
+            return DefaultValues;
+        }
+
+        return normalized;
+    }
+
+    private static string? NormalizeValue(string? value)
+    {
+        return value?.Trim().ToLowerInvariant() switch
+        {
+            Registry => Registry,
+            RecentFolders => RecentFolders,
+            JumpLists => JumpLists,
+            _ => null
+        };
+    }
+}

LanMountainDesktop/Models/WhiteboardNoteRetentionPolicy.cs

@@ -0,0 +1,23 @@
+namespace LanMountainDesktop.Models;
+
+public static class WhiteboardNoteRetentionPolicy
+{
+    public const int MinimumDays = 7;
+    public const int MaximumDays = 15;
+    public const int DefaultDays = MaximumDays;
+
+    public static int NormalizeDays(int days)
+    {
+        if (days < MinimumDays)
+        {
+            return MinimumDays;
+        }
+
+        if (days > MaximumDays)
+        {
+            return MaximumDays;
+        }
+
+        return days;
+    }
+}

LanMountainDesktop/Models/WhiteboardNoteSnapshot.cs

@@ -0,0 +1,60 @@
+using System;
+using System.Collections.Generic;
+
+namespace LanMountainDesktop.Models;
+
+public sealed class WhiteboardNoteSnapshot
+{
+    public int Version { get; set; } = 1;
+
+    public DateTimeOffset SavedUtc { get; set; }
+
+    public List<WhiteboardStrokeSnapshot> Strokes { get; set; } = [];
+
+    public WhiteboardNoteSnapshot Clone()
+    {
+        var clone = (WhiteboardNoteSnapshot)MemberwiseClone();
+        clone.Strokes = Strokes is { Count: > 0 }
+            ? new List<WhiteboardStrokeSnapshot>(Strokes.ConvertAll(stroke => stroke?.Clone() ?? new WhiteboardStrokeSnapshot()))
+            : [];
+        return clone;
+    }
+}
+
+public sealed class WhiteboardStrokeSnapshot
+{
+    public string Color { get; set; } = "#FF000000";
+
+    public double InkThickness { get; set; } = 2.5d;
+
+    public bool IgnorePressure { get; set; } = true;
+
+    public List<WhiteboardStylusPointSnapshot> Points { get; set; } = [];
+
+    public WhiteboardStrokeSnapshot Clone()
+    {
+        var clone = (WhiteboardStrokeSnapshot)MemberwiseClone();
+        clone.Points = Points is { Count: > 0 }
+            ? new List<WhiteboardStylusPointSnapshot>(Points.ConvertAll(point => point?.Clone() ?? new WhiteboardStylusPointSnapshot()))
+            : [];
+        return clone;
+    }
+}
+
+public sealed class WhiteboardStylusPointSnapshot
+{
+    public double X { get; set; }
+
+    public double Y { get; set; }
+
+    public double Pressure { get; set; } = 0.5d;
+
+    public double Width { get; set; }
+
+    public double Height { get; set; }
+
+    public WhiteboardStylusPointSnapshot Clone()
+    {
+        return (WhiteboardStylusPointSnapshot)MemberwiseClone();
+    }
+}

LanMountainDesktop/Program.cs

@@ -43,6 +43,7 @@ sealed class Program
 
         var diagnostics = StartupDiagnosticsService.Run(args);
         StartupDiagnosticsService.ShowLegacyExecutableWarningIfNeeded(diagnostics);
+        ScheduleWhiteboardNoteStartupCleanup();
 
         try
         {
@@ -88,6 +89,25 @@ sealed class Program
         return builder;
     }
 
+    private static void ScheduleWhiteboardNoteStartupCleanup()
+    {
+        _ = Task.Run(() =>
+        {
+            try
+            {
+                var deletedCount = new WhiteboardNotePersistenceService().DeleteExpiredNotesBatch(batchSize: 512);
+                if (deletedCount > 0)
+                {
+                    AppLogger.Info("Startup", $"Deleted {deletedCount} expired whiteboard notes during startup maintenance.");
+                }
+            }
+            catch (Exception ex)
+            {
+                AppLogger.Warn("Startup", "Failed to run whiteboard note startup maintenance.", ex);
+            }
+        });
+    }
+
     private static SingleInstanceService AcquireSingleInstance(int? restartParentProcessId)
     {
         var singleInstance = SingleInstanceService.CreateDefault();

LanMountainDesktop/Services/AppDatabaseService.cs

@@ -29,6 +29,16 @@ public sealed class AppDatabaseService
         _databasePath = Path.Combine(dataDirectory, "app.db");
     }
 
+    public AppDatabaseService(string databasePath)
+    {
+        if (string.IsNullOrWhiteSpace(databasePath))
+        {
+            throw new ArgumentException("Database path cannot be null or whitespace.", nameof(databasePath));
+        }
+
+        _databasePath = databasePath;
+    }
+
     public SqliteConnection OpenConnection()
     {
         var directory = Path.GetDirectoryName(_databasePath);

LanMountainDesktop/Services/AppearanceThemeService.cs

@@ -15,7 +15,6 @@ using LanMountainDesktop.Models;
 using LanMountainDesktop.PluginSdk;
 using LanMountainDesktop.Services.Settings;
 using LanMountainDesktop.Theme;
-using LibVLCSharp.Shared;
 using Microsoft.Win32;
 
 namespace LanMountainDesktop.Services;
@@ -89,11 +88,6 @@ internal interface IMaterialSurfaceService
     AppearanceMaterialSurface GetSurface(ThemeColorContext context, MaterialSurfaceRole role);
 }
 
-internal interface IVideoWallpaperSeedExtractor
-{
-    IReadOnlyList<Color> ExtractSeedCandidates(string videoPath, MonetColorService monetColorService);
-}
-
 internal readonly record struct WallpaperSeedSourceDescriptor(
     string SourceKind,
     string SourceKey,
@@ -114,75 +108,6 @@ internal readonly record struct WallpaperPaletteResolution(
     Color EffectiveSeedColor,
     string? ResolvedWallpaperPath);
 
-internal sealed class LibVlcVideoWallpaperSeedExtractor : IVideoWallpaperSeedExtractor
-{
-    public IReadOnlyList<Color> ExtractSeedCandidates(string videoPath, MonetColorService monetColorService)
-    {
-        if (string.IsNullOrWhiteSpace(videoPath) || !File.Exists(videoPath))
-        {
-            return [];
-        }
-
-        var snapshotPath = Path.Combine(
-            Path.GetTempPath(),
-            $"lanmountaindesktop-video-seed-{Guid.NewGuid():N}.png");
-
-        try
-        {
-            using var libVlc = new LibVLC("--no-audio", "--intf=dummy", "--no-video-title-show");
-            using var media = new Media(libVlc, new Uri(videoPath));
-            using var mediaPlayer = new MediaPlayer(libVlc)
-            {
-                Media = media
-            };
-
-            mediaPlayer.Play();
-
-            var stopwatch = Stopwatch.StartNew();
-            while (stopwatch.Elapsed < TimeSpan.FromSeconds(5))
-            {
-                Thread.Sleep(180);
-                if (!mediaPlayer.TakeSnapshot(0, snapshotPath, 320, 180))
-                {
-                    continue;
-                }
-
-                var fileInfo = new FileInfo(snapshotPath);
-                if (!fileInfo.Exists || fileInfo.Length <= 0)
-                {
-                    continue;
-                }
-
-                using var bitmap = new Bitmap(snapshotPath);
-                return monetColorService.ExtractSeedCandidates(bitmap);
-            }
-        }
-        catch (Exception ex)
-        {
-            AppLogger.Warn(
-                "Appearance.VideoWallpaperPalette",
-                $"Failed to extract wallpaper seed candidates from video '{videoPath}'.",
-                ex);
-        }
-        finally
-        {
-            try
-            {
-                if (File.Exists(snapshotPath))
-                {
-                    File.Delete(snapshotPath);
-                }
-            }
-            catch
-            {
-                // Best effort cleanup only.
-            }
-        }
-
-        return [];
-    }
-}
-
 internal sealed class SystemWallpaperService : ISystemWallpaperService
 {
     public bool IsSupported => OperatingSystem.IsWindows();
@@ -477,7 +402,6 @@ internal sealed class AppearanceThemeService : IAppearanceThemeService, IDisposa
     private readonly ISystemWallpaperService _systemWallpaperService;
     private readonly IWindowMaterialService _windowMaterialService;
     private readonly IMaterialSurfaceService _materialSurfaceService;
-    private readonly IVideoWallpaperSeedExtractor _videoWallpaperSeedExtractor;
     private readonly MonetColorService _monetColorService = new();
     private readonly string _liveThemeColorMode;
     private readonly string _liveSystemMaterialMode;
@@ -490,14 +414,12 @@ internal sealed class AppearanceThemeService : IAppearanceThemeService, IDisposa
         ISettingsFacadeService settingsFacade,
         ISystemWallpaperService systemWallpaperService,
         IWindowMaterialService windowMaterialService,
-        IMaterialSurfaceService materialSurfaceService,
-        IVideoWallpaperSeedExtractor? videoWallpaperSeedExtractor = null)
+        IMaterialSurfaceService materialSurfaceService)
     {
         _settingsFacade = settingsFacade ?? throw new ArgumentNullException(nameof(settingsFacade));
         _systemWallpaperService = systemWallpaperService ?? throw new ArgumentNullException(nameof(systemWallpaperService));
         _windowMaterialService = windowMaterialService ?? throw new ArgumentNullException(nameof(windowMaterialService));
         _materialSurfaceService = materialSurfaceService ?? throw new ArgumentNullException(nameof(materialSurfaceService));
-        _videoWallpaperSeedExtractor = videoWallpaperSeedExtractor ?? new LibVlcVideoWallpaperSeedExtractor();
         var initialThemeState = _settingsFacade.Theme.Get();
         _liveThemeColorMode = ThemeAppearanceValues.NormalizeThemeColorMode(
             initialThemeState.ThemeColorMode,
@@ -886,7 +808,6 @@ internal sealed class AppearanceThemeService : IAppearanceThemeService, IDisposa
         IReadOnlyList<Color> seedCandidates = source.SourceKind switch
         {
             "app_wallpaper" or "system_wallpaper" => ExtractImageSeedCandidates(source.FilePath),
-            "app_video" => ExtractVideoSeedCandidates(source.FilePath),
             "app_solid" when source.SolidColor is { } solidColor => new[] { solidColor },
             _ => []
         };
@@ -920,16 +841,6 @@ internal sealed class AppearanceThemeService : IAppearanceThemeService, IDisposa
         }
     }
 
-    private IReadOnlyList<Color> ExtractVideoSeedCandidates(string? wallpaperPath)
-    {
-        if (string.IsNullOrWhiteSpace(wallpaperPath) || !File.Exists(wallpaperPath))
-        {
-            return [];
-        }
-
-        return _videoWallpaperSeedExtractor.ExtractSeedCandidates(wallpaperPath, _monetColorService);
-    }
-
     private WallpaperSeedSourceDescriptor ResolveWallpaperSeedSource(WallpaperSettingsState wallpaperState)
     {
         if (string.Equals(wallpaperState.Type, "SolidColor", StringComparison.OrdinalIgnoreCase) &&
@@ -960,16 +871,6 @@ internal sealed class AppearanceThemeService : IAppearanceThemeService, IDisposa
                     wallpaperPath,
                     null);
             }
-
-            if (appWallpaperMediaType == WallpaperMediaType.Video)
-            {
-                return new WallpaperSeedSourceDescriptor(
-                    "app_video",
-                    CreateWallpaperSourceKey("app_video", wallpaperPath),
-                    wallpaperPath,
-                    wallpaperPath,
-                    null);
-            }
         }
 
         var systemWallpaper = _systemWallpaperService.GetWallpaperPath();

LanMountainDesktop/Services/ComponentSettingsService.cs

@@ -106,6 +106,8 @@ public sealed class ComponentSettingsService : IComponentInstanceSettingsStore
 
     public void DeleteForComponent(string componentId, string? placementId)
     {
+        _ = new WhiteboardNotePersistenceService().DeleteNote(componentId, placementId);
+
         if (_settingsService is not null)
         {
             _settingsService.SaveSnapshot(

LanMountainDesktop/Services/CrashReportService.cs

@@ -15,6 +15,7 @@ public sealed class DeviceIdService
 {
     private static DeviceIdService? _instance;
     private string? _deviceId;
+    private string? _persistentUserId;  // 持久化的用户ID，用于关联设备
     private readonly ISettingsFacadeService _settingsFacade;
     private bool _isInitialized;
 
@@ -43,6 +44,19 @@ public sealed class DeviceIdService
         }
     }
 
+    // 持久化的用户ID，用于跨设备关联用户
+    public string PersistentUserId
+    {
+        get
+        {
+            if (_persistentUserId is null)
+            {
+                throw new InvalidOperationException("PersistentUserId not initialized");
+            }
+            return _persistentUserId;
+        }
+    }
+
     private void EnsureDeviceId()
     {
         if (_isInitialized)
@@ -56,13 +70,22 @@ public sealed class DeviceIdService
         {
             var snapshot = _settingsFacade.Settings.LoadSnapshot<AppSettingsSnapshot>(SettingsScope.App);
 
+            // 初始化或生成持久化用户ID（只生成一次，永不改变）
+            if (string.IsNullOrEmpty(snapshot.PersistentUserId))
+            {
+                snapshot.PersistentUserId = GeneratePersistentUserId();
+                AppLogger.Info("DeviceId", $"Generated new persistent user ID: {snapshot.PersistentUserId}");
+            }
+            _persistentUserId = snapshot.PersistentUserId;
+
+            // 初始化或生成设备ID（可以刷新）
             if (string.IsNullOrEmpty(snapshot.DeviceId))
             {
                 snapshot.DeviceId = GenerateDeviceId();
                 _settingsFacade.Settings.SaveSnapshot(
                     SettingsScope.App,
                     snapshot,
-                    changedKeys: [nameof(AppSettingsSnapshot.DeviceId)]);
+                    changedKeys: [nameof(AppSettingsSnapshot.DeviceId), nameof(AppSettingsSnapshot.PersistentUserId)]);
                 _deviceId = snapshot.DeviceId;
                 AppLogger.Info("DeviceId", $"Generated new device ID: {_deviceId}");
             }
@@ -75,6 +98,7 @@ public sealed class DeviceIdService
         catch (Exception ex)
         {
             _deviceId = GenerateDeviceId();
+            _persistentUserId = GeneratePersistentUserId();
             AppLogger.Warn("DeviceId", $"Failed to persist device ID, using generated ID: {_deviceId}", ex);
         }
     }
@@ -87,6 +111,15 @@ public sealed class DeviceIdService
         var hash = sha.ComputeHash(System.Text.Encoding.UTF8.GetBytes(deviceInfo));
         return Convert.ToHexString(hash)[..32].ToLower();
     }
+
+    private static string GeneratePersistentUserId()
+    {
+        // 生成一个永久性的用户ID，基于机器名和用户名的哈希
+        var userInfo = $"{Environment.MachineName}|{Environment.UserName}|LanMountainDesktop";
+        using var sha = System.Security.Cryptography.SHA256.Create();
+        var hash = sha.ComputeHash(System.Text.Encoding.UTF8.GetBytes(userInfo));
+        return Convert.ToHexString(hash)[..32].ToLower();
+    }
 }
 
 public sealed class UserBehaviorAnalyticsService : IDisposable
@@ -140,9 +173,18 @@ public sealed class UserBehaviorAnalyticsService : IDisposable
                 TimeSpan.FromSeconds(10),
                 TimeSpan.FromSeconds(30));
 
+            // 发送PostHog标准的$pageview事件用于统计日活（始终发送，不受开关影响）
+            CaptureEvent("$pageview", new Dictionary<string, object>
+            {
+                { "$current_url", "app://main" },
+                { "$title", "LanMountainDesktop" }
+            });
+
+            // 发送应用启动事件（始终发送，用于统计用户数量）
             CaptureEvent("app_online", new Dictionary<string, object>
             {
-                { "event_type", "app_start" }
+                { "event_type", "app_start" },
+                { "analytics_enabled", _isEnabled }
             });
 
             AppLogger.Info("UserBehaviorAnalytics", $"Analytics initialized. DeviceId={_deviceIdService.DeviceId}, Enabled={_isEnabled}");
@@ -382,10 +424,22 @@ public sealed class UserBehaviorAnalyticsService : IDisposable
 
         try
         {
+            // 基础事件（$pageview, app_online, app_shutdown等）始终发送，用于统计用户数量
+            bool isBasicEvent = eventName.StartsWith("$") || 
+                               eventName == "app_online" || 
+                               eventName == "app_shutdown" ||
+                               eventName == "$identify";
+
+            // 非基础事件只有在启用时才发送
+            if (!isBasicEvent && !_isEnabled)
+            {
+                return;
+            }
+
             var eventData = new UserBehaviorEvent
             {
                 Event = eventName,
-                DistinctId = _deviceIdService.DeviceId,
+                DistinctId = _deviceIdService.PersistentUserId,  // 使用持久化用户ID
                 Timestamp = DateTimeOffset.UtcNow,
                 Properties = properties ?? new Dictionary<string, object>(),
                 IncludeDetailedData = _isEnabled
@@ -542,21 +596,29 @@ public sealed class UserBehaviorAnalyticsService : IDisposable
         {
             var userProperties = new Dictionary<string, object>
             {
-                { "$device_id", distinctId },
                 { "$app_version", GetAppVersion() },
                 { "$os", GetOsName() },
-                { "$os_version", GetOsVersion() }
+                { "$os_version", GetOsVersion() },
+                { "$device_type", GetDeviceModel() },
+                { "$device_id", _deviceIdService.DeviceId }  // 当前设备ID
             };
 
+            // PostHog正确的$identify格式
+            // 使用PersistentUserId作为distinct_id，确保设备ID刷新后仍能关联到同一用户
             var requestBody = new Dictionary<string, object>
             {
                 { "api_key", PostHogApiKey },
                 { "event", "$identify" },
+                { "distinct_id", _deviceIdService.PersistentUserId },  // 使用持久化用户ID
                 { "timestamp", DateTimeOffset.UtcNow.ToString("o") },
                 { "properties", new Dictionary<string, object>
                     {
-                        { "distinct_id", distinctId },
-                        { "$set", userProperties }
+                        { "$set", userProperties },
+                        { "$set_once", new Dictionary<string, object>
+                            {
+                                { "first_app_open", DateTimeOffset.UtcNow.ToString("o") }
+                            }
+                        }
                     }
                 }
             };
@@ -796,6 +858,9 @@ public sealed class CrashReportService
             });
 
             ConfigureCrashReportingScope();
+            
+            // 显式开始会话跟踪
+            SentrySdk.StartSession();
 
             AppLogger.Info("CrashReport", $"Sentry crash reporting initialized. DeviceId={_deviceIdService.DeviceId}");
 
@@ -849,7 +914,10 @@ public sealed class CrashReportService
         {
             if (_isEnabled && _isInitialized)
             {
-                AppLogger.Info("CrashReport", $"Shutdown event will be sent via Sentry. DeviceId={_deviceIdService.DeviceId}");
+                // 结束Sentry会话
+                SentrySdk.EndSession();
+                SentrySdk.Flush(TimeSpan.FromSeconds(3));
+                AppLogger.Info("CrashReport", $"Shutdown event sent via Sentry. DeviceId={_deviceIdService.DeviceId}");
                 return;
             }
 

LanMountainDesktop/Services/DesktopComponentEditorRegistryFactory.cs

@@ -72,6 +72,18 @@ public static class DesktopComponentEditorRegistryFactory
             [BuiltInComponentIds.DesktopStudyEnvironment] = new(
                 BuiltInComponentIds.DesktopStudyEnvironment,
                 context => new StudyEnvironmentComponentEditor(context)),
+            [BuiltInComponentIds.DesktopRemovableStorage] = new(
+                BuiltInComponentIds.DesktopRemovableStorage,
+                context => new RemovableStorageComponentEditor(context)),
+            [BuiltInComponentIds.DesktopWhiteboard] = new(
+                BuiltInComponentIds.DesktopWhiteboard,
+                context => new WhiteboardComponentEditor(context)),
+            [BuiltInComponentIds.DesktopBlackboardLandscape] = new(
+                BuiltInComponentIds.DesktopBlackboardLandscape,
+                context => new WhiteboardComponentEditor(context)),
+            [BuiltInComponentIds.DesktopOfficeRecentDocuments] = new(
+                BuiltInComponentIds.DesktopOfficeRecentDocuments,
+                context => new OfficeRecentDocumentsComponentEditor(context)),
             [BuiltInComponentIds.DesktopWeather] = CreateWeatherRegistration(BuiltInComponentIds.DesktopWeather),
             [BuiltInComponentIds.DesktopWeatherClock] = CreateWeatherRegistration(BuiltInComponentIds.DesktopWeatherClock),
             [BuiltInComponentIds.DesktopHourlyWeather] = CreateWeatherRegistration(BuiltInComponentIds.DesktopHourlyWeather),

LanMountainDesktop/Services/IWhiteboardNotePersistenceService.cs

@@ -0,0 +1,19 @@
+using System;
+using LanMountainDesktop.Models;
+
+namespace LanMountainDesktop.Services;
+
+public interface IWhiteboardNotePersistenceService
+{
+    WhiteboardNoteSnapshot LoadNote(string componentId, string? placementId, int retentionDays);
+
+    void SaveNote(string componentId, string? placementId, WhiteboardNoteSnapshot snapshot, int retentionDays);
+
+    bool DeleteNote(string componentId, string? placementId);
+
+    bool TryDeleteExpiredNote(string componentId, string? placementId, int retentionDays);
+
+    bool IsExpired(WhiteboardNoteSnapshot snapshot, int retentionDays, DateTimeOffset? now = null);
+
+    DateTimeOffset? GetExpirationUtc(WhiteboardNoteSnapshot snapshot, int retentionDays);
+}

LanMountainDesktop/Services/LocalizationService.cs

@@ -1,6 +1,7 @@
-using System;
+using System;
 using System.Collections.Generic;
 using System.IO;
+using System.Reflection;
 using System.Text.Json;
 
 namespace LanMountainDesktop.Services;
@@ -16,6 +17,23 @@ public sealed class LocalizationService
     private readonly Dictionary<string, Dictionary<string, string>> _cache =
         new(StringComparer.OrdinalIgnoreCase);
 
+    /// <summary>
+    /// 清除指定语言代码的缓存，强制下次重新加载。
+    /// 在语言切换时调用此方法以确保加载最新的语言文件。
+    /// </summary>
+    public void ClearCache(string? languageCode = null)
+    {
+        if (string.IsNullOrWhiteSpace(languageCode))
+        {
+            _cache.Clear();
+        }
+        else
+        {
+            var normalizedCode = NormalizeLanguageCode(languageCode);
+            _cache.Remove(normalizedCode);
+        }
+    }
+
     public string NormalizeLanguageCode(string? languageCode)
     {
         return string.Equals(languageCode, "en-US", StringComparison.OrdinalIgnoreCase)
@@ -42,14 +60,17 @@ public sealed class LocalizationService
         var result = new Dictionary<string, string>(StringComparer.OrdinalIgnoreCase);
         try
         {
-            var filePath = Path.Combine(AppContext.BaseDirectory, "Localization", $"{languageCode}.json");
-            if (File.Exists(filePath))
+            var json = TryLoadFromFileSystem(languageCode);
+            if (string.IsNullOrEmpty(json))
+            {
+                json = TryLoadFromEmbeddedResource(languageCode);
+            }
+
+            if (!string.IsNullOrEmpty(json))
             {
-                var json = File.ReadAllText(filePath);
-                // Defensive: tolerate accidentally duplicated UTF-8 BOM characters at file start.
                 json = json.TrimStart('\uFEFF');
                 var data = JsonSerializer.Deserialize<Dictionary<string, string>>(json, JsonOptions);
-                if (data is not null)
+                if (data is not null && data.Count > 0)
                 {
                     result = new Dictionary<string, string>(data, StringComparer.OrdinalIgnoreCase);
                 }
@@ -60,7 +81,48 @@ public sealed class LocalizationService
             // Keep empty table for resilience.
         }
 
-        _cache[languageCode] = result;
+        // 只有当语言表非空时才缓存，这样如果加载失败可以下次重试
+        if (result.Count > 0)
+        {
+            _cache[languageCode] = result;
+        }
         return result;
     }
+
+    private string? TryLoadFromFileSystem(string languageCode)
+    {
+        try
+        {
+            var filePath = Path.Combine(AppContext.BaseDirectory, "Localization", $"{languageCode}.json");
+            if (File.Exists(filePath))
+            {
+                return File.ReadAllText(filePath);
+            }
+        }
+        catch
+        {
+            // Continue to next method
+        }
+        return null;
+    }
+
+    private string? TryLoadFromEmbeddedResource(string languageCode)
+    {
+        try
+        {
+            var assembly = Assembly.GetExecutingAssembly();
+            var resourceName = $"LanMountainDesktop.Localization.{languageCode}.json";
+            using var stream = assembly.GetManifestResourceStream(resourceName);
+            if (stream != null)
+            {
+                using var reader = new StreamReader(stream);
+                return reader.ReadToEnd();
+            }
+        }
+        catch
+        {
+            // Continue to next method
+        }
+        return null;
+    }
 }

LanMountainDesktop/Services/OfficeRecentDocumentsService.cs

@@ -1,18 +1,25 @@
 using System;
 using System.Collections.Generic;
 using System.Diagnostics;
+using System.Globalization;
 using System.IO;
 using System.Linq;
 using System.Runtime.InteropServices;
+using System.Runtime.Versioning;
 using System.Text;
-using System.Text.Json;
-using LanMountainDesktop.Services.Settings;
+using System.Text.RegularExpressions;
+using System.Threading;
+using LanMountainDesktop.Models;
+using Microsoft.Win32;
+using MudTools.OfficeInterop;
+using MudTools.OfficeInterop.Excel;
+using MudTools.OfficeInterop.Word;
 
 namespace LanMountainDesktop.Services;
 
 public interface IOfficeRecentDocumentsService
 {
-    List<OfficeRecentDocument> GetRecentDocuments(int maxCount = 20);
+    List<OfficeRecentDocument> GetRecentDocuments(int maxCount = 20, IReadOnlyCollection<string>? enabledSources = null);
     void OpenDocument(string filePath);
 }
 
@@ -24,78 +31,67 @@ public sealed class OfficeRecentDocument
     public DateTime LastModifiedTime { get; set; }
     public long FileSizeBytes { get; set; }
     public string IconGlyph { get; set; } = string.Empty;
+    internal DateTime? RecentAccessTime { get; set; }
+    internal int SourcePriority { get; set; }
+    internal int SourceOrder { get; set; }
 }
 
 public sealed class OfficeRecentDocumentsService : IOfficeRecentDocumentsService
 {
+    private const string LogCategory = "OfficeRecentDocs";
     private static readonly string[] OfficeExtensions = { ".doc", ".docx", ".dot", ".dotx", ".rtf" };
     private static readonly string[] ExcelExtensions = { ".xls", ".xlsx", ".xlsm", ".xlsb", ".csv" };
     private static readonly string[] PowerPointExtensions = { ".ppt", ".pptx", ".pptm", ".pps", ".ppsx" };
+    private static readonly Regex OfficeFilePathRegex = new(
+        @"(?:[A-Z]:\\|\\\\)[^\x00-\x1F""<>|]+?\.(?:docx?|dotx?|rtf|xlsx?|xlsm|xlsb|csv|pptx?|pptm|ppsx?)",
+        RegexOptions.IgnoreCase | RegexOptions.Compiled);
+    private static readonly Regex OfficeMruTimestampRegex = new(
+        @"\[T(?<filetime>[0-9A-F]+)\]",
+        RegexOptions.IgnoreCase | RegexOptions.Compiled);
 
-    public List<OfficeRecentDocument> GetRecentDocuments(int maxCount = 20)
+    public List<OfficeRecentDocument> GetRecentDocuments(int maxCount = 20, IReadOnlyCollection<string>? enabledSources = null)
     {
         var documents = new List<OfficeRecentDocument>();
-        var recentPaths = GetRecentFolders();
+        var normalizedSources = OfficeRecentDocumentSourceTypes.NormalizeValues(
+            enabledSources,
+            useDefaultWhenEmpty: enabledSources is null);
 
-        foreach (var recentPath in recentPaths)
+        if (!OperatingSystem.IsWindows() || normalizedSources.Count == 0)
         {
-            if (!Directory.Exists(recentPath))
-            {
-                continue;
-            }
+            return documents;
+        }
 
-            try
-            {
-                var files = Directory.GetFiles(recentPath, "*.lnk");
-                foreach (var lnkPath in files)
-                {
-                    var targetPath = GetShortcutTarget(lnkPath);
-                    if (string.IsNullOrEmpty(targetPath))
-                    {
-                        continue;
-                    }
+        var useRegistry = normalizedSources.Contains(OfficeRecentDocumentSourceTypes.Registry, StringComparer.OrdinalIgnoreCase);
+        var useRecentFolders = normalizedSources.Contains(OfficeRecentDocumentSourceTypes.RecentFolders, StringComparer.OrdinalIgnoreCase);
+        var useJumpLists = normalizedSources.Contains(OfficeRecentDocumentSourceTypes.JumpLists, StringComparer.OrdinalIgnoreCase);
 
-                    var extension = Path.GetExtension(targetPath).ToLowerInvariant();
-                    if (!IsOfficeFile(extension))
-                    {
-                        continue;
-                    }
+        if (useRegistry)
+        {
+            TryGetFromRegistry(documents);
+        }
 
-                    if (!System.IO.File.Exists(targetPath))
-                    {
-                        continue;
-                    }
+        if (useRecentFolders)
+        {
+            TryGetFromRecentFolders(documents);
+        }
 
-                    try
-                    {
-                        var fileInfo = new FileInfo(targetPath);
-                        var doc = new OfficeRecentDocument
-                        {
-                            FileName = Path.GetFileNameWithoutExtension(targetPath),
-                            FilePath = targetPath,
-                            Extension = extension,
-                            LastModifiedTime = fileInfo.LastWriteTime,
-                            FileSizeBytes = fileInfo.Length,
-                            IconGlyph = GetIconGlyph(extension)
-                        };
+        if (useJumpLists)
+        {
+            TryGetFromJumpLists(documents);
+        }
 
-                        if (!documents.Any(d => d.FilePath == targetPath))
-                        {
-                            documents.Add(doc);
-                        }
-                    }
-                    catch
-                    {
-                    }
-                }
-            }
-            catch
-            {
-            }
+        if (useRegistry && documents.Count < maxCount)
+        {
+            TryGetFromMudToolsInterop(documents);
         }
 
         return documents
-            .OrderByDescending(d => d.LastModifiedTime)
+            .GroupBy(d => d.FilePath, StringComparer.OrdinalIgnoreCase)
+            .Select(MergeDocuments)
+            .OrderByDescending(d => d.RecentAccessTime ?? DateTime.MinValue)
+            .ThenBy(d => d.SourcePriority)
+            .ThenBy(d => d.SourceOrder)
+            .ThenByDescending(d => d.LastModifiedTime)
             .Take(maxCount)
             .ToList();
     }
@@ -109,30 +105,587 @@ public sealed class OfficeRecentDocumentsService : IOfficeRecentDocumentsService
                 FileName = filePath,
                 UseShellExecute = true
             };
+
             Process.Start(startInfo);
         }
+        catch (Exception ex)
+        {
+            AppLogger.Warn(LogCategory, $"Failed to open Office document '{filePath}'.", ex);
+        }
+    }
+
+    private static OfficeRecentDocument MergeDocuments(IGrouping<string, OfficeRecentDocument> group)
+    {
+        var preferred = group
+            .OrderByDescending(d => d.RecentAccessTime ?? DateTime.MinValue)
+            .ThenBy(d => d.SourcePriority)
+            .ThenBy(d => d.SourceOrder)
+            .ThenByDescending(d => d.LastModifiedTime)
+            .First();
+
+        return new OfficeRecentDocument
+        {
+            FileName = preferred.FileName,
+            FilePath = preferred.FilePath,
+            Extension = preferred.Extension,
+            LastModifiedTime = group.Max(d => d.LastModifiedTime),
+            FileSizeBytes = preferred.FileSizeBytes,
+            IconGlyph = preferred.IconGlyph,
+            RecentAccessTime = group
+                .Where(d => d.RecentAccessTime.HasValue)
+                .Select(d => d.RecentAccessTime)
+                .Max(),
+            SourcePriority = preferred.SourcePriority,
+            SourceOrder = preferred.SourceOrder
+        };
+    }
+
+    [SupportedOSPlatform("windows")]
+    private void TryGetFromMudToolsInterop(List<OfficeRecentDocument> documents)
+    {
+        try
+        {
+            RunOnStaThread(() =>
+            {
+                var sourceOrder = 0;
+                TryGetFromWordInterop(documents, ref sourceOrder);
+                TryGetFromExcelInterop(documents, ref sourceOrder);
+            });
+        }
+        catch (Exception ex)
+        {
+            AppLogger.Warn(LogCategory, "MudTools.OfficeInterop recent-document read failed.", ex);
+        }
+    }
+
+    [SupportedOSPlatform("windows")]
+    private void TryGetFromWordInterop(List<OfficeRecentDocument> documents, ref int sourceOrder)
+    {
+        if (!TryGetOfficeApplication("Word.Application", out var comObject, out var createdNew))
+        {
+            return;
+        }
+
+        object? application = null;
+
+        try
+        {
+            application = WordFactory.Connection(comObject!);
+
+            if (createdNew)
+            {
+                TrySetProperty(comObject, "Visible", false);
+                TrySetProperty(application, "DisplayAlerts", WdAlertLevel.wdAlertsNone);
+            }
+
+            AddInteropRecentFiles(documents, GetPropertyValue(application, "RecentFiles"), 0, ref sourceOrder);
+        }
+        catch (Exception ex)
+        {
+            AppLogger.Warn(LogCategory, "Failed to read Word recent files via MudTools.OfficeInterop.", ex);
+        }
+        finally
+        {
+            CleanupOfficeApplication(application, comObject, createdNew);
+        }
+    }
+
+    [SupportedOSPlatform("windows")]
+    private void TryGetFromExcelInterop(List<OfficeRecentDocument> documents, ref int sourceOrder)
+    {
+        if (!TryGetOfficeApplication("Excel.Application", out var comObject, out var createdNew))
+        {
+            return;
+        }
+
+        object? application = null;
+
+        try
+        {
+            application = ExcelFactory.Connection(comObject!);
+
+            if (createdNew)
+            {
+                TrySetProperty(comObject, "Visible", false);
+                TrySetProperty(application, "DisplayAlerts", false);
+            }
+
+            AddInteropRecentFiles(documents, GetPropertyValue(application, "RecentFiles"), 0, ref sourceOrder);
+        }
+        catch (Exception ex)
+        {
+            AppLogger.Warn(LogCategory, "Failed to read Excel recent files via MudTools.OfficeInterop.", ex);
+        }
+        finally
+        {
+            CleanupOfficeApplication(application, comObject, createdNew);
+        }
+    }
+
+    private void AddInteropRecentFiles(
+        List<OfficeRecentDocument> documents,
+        object? recentFiles,
+        int sourcePriority,
+        ref int sourceOrder)
+    {
+        if (recentFiles == null)
+        {
+            return;
+        }
+
+        var count = GetIntProperty(recentFiles, "Count");
+        var itemProperty = recentFiles.GetType().GetProperty("Item");
+        if (count <= 0 || itemProperty == null)
+        {
+            return;
+        }
+
+        for (var index = 1; index <= count; index++)
+        {
+            try
+            {
+                var recentFile = itemProperty.GetValue(recentFiles, new object[] { index });
+                var filePath = GetStringProperty(recentFile, "Path");
+                AddDocumentIfExists(documents, filePath, sourcePriority, sourceOrder++, null);
+            }
+            catch
+            {
+                // Ignore a single malformed MRU entry and keep processing the rest.
+            }
+        }
+    }
+
+    [SupportedOSPlatform("windows")]
+    private static bool TryGetOfficeApplication(string progId, out object? comObject, out bool createdNew)
+    {
+        comObject = null;
+        createdNew = false;
+
+        var applicationType = Type.GetTypeFromProgID(progId, throwOnError: false);
+        if (applicationType == null)
+        {
+            return false;
+        }
+
+        try
+        {
+            comObject = Activator.CreateInstance(applicationType);
+            createdNew = comObject != null;
+            return comObject != null;
+        }
+        catch
+        {
+            return false;
+        }
+    }
+
+    [SupportedOSPlatform("windows")]
+    private static void CleanupOfficeApplication(object? application, object? comObject, bool createdNew)
+    {
+        try
+        {
+            if (createdNew && application != null)
+            {
+                InvokeParameterlessMethod(application, "Quit");
+            }
+        }
+        catch
+        {
+        }
+
+        try
+        {
+            if (application is IDisposable disposable)
+            {
+                disposable.Dispose();
+            }
+        }
+        catch
+        {
+        }
+
+        ReleaseComObject(application);
+        if (!ReferenceEquals(application, comObject))
+        {
+            ReleaseComObject(comObject);
+        }
+    }
+
+    [SupportedOSPlatform("windows")]
+    private static void ReleaseComObject(object? instance)
+    {
+        if (instance == null || !Marshal.IsComObject(instance))
+        {
+            return;
+        }
+
+        try
+        {
+            Marshal.FinalReleaseComObject(instance);
+        }
         catch
         {
         }
     }
 
-    private static List<string> GetRecentFolders()
+    [SupportedOSPlatform("windows")]
+    private static void RunOnStaThread(Action action)
     {
-        var folders = new List<string>();
+        Exception? exception = null;
+        using var finished = new ManualResetEventSlim();
 
+        var thread = new Thread(() =>
+        {
+            try
+            {
+                action();
+            }
+            catch (Exception ex)
+            {
+                exception = ex;
+            }
+            finally
+            {
+                finished.Set();
+            }
+        });
+
+        thread.IsBackground = true;
+        thread.SetApartmentState(ApartmentState.STA);
+        thread.Start();
+        finished.Wait();
+
+        if (exception != null)
+        {
+            throw new InvalidOperationException("Failed to run Office interop on STA thread.", exception);
+        }
+    }
+
+    [SupportedOSPlatform("windows")]
+    private void TryGetFromRegistry(List<OfficeRecentDocument> documents)
+    {
+        try
+        {
+            using var officeRoot = Registry.CurrentUser.OpenSubKey(@"Software\Microsoft\Office");
+            if (officeRoot == null)
+            {
+                return;
+            }
+
+            var versions = officeRoot
+                .GetSubKeyNames()
+                .Where(IsOfficeVersionKey)
+                .OrderByDescending(ParseVersionKey)
+                .ToList();
+
+            var sourceOrder = 0;
+            foreach (var version in versions)
+            {
+                TryGetFromRegistryApp(documents, version, "Word", ref sourceOrder);
+                TryGetFromRegistryApp(documents, version, "Excel", ref sourceOrder);
+                TryGetFromRegistryApp(documents, version, "PowerPoint", ref sourceOrder);
+            }
+        }
+        catch (Exception ex)
+        {
+            AppLogger.Warn(LogCategory, "Failed to read Office MRU entries from the registry.", ex);
+        }
+    }
+
+    [SupportedOSPlatform("windows")]
+    private void TryGetFromRegistryApp(List<OfficeRecentDocument> documents, string version, string appName, ref int sourceOrder)
+    {
+        TryGetFromRegistryMruKey(documents, $@"Software\Microsoft\Office\{version}\{appName}\File MRU", ref sourceOrder);
+
+        using var userMruRoot = Registry.CurrentUser.OpenSubKey($@"Software\Microsoft\Office\{version}\{appName}\User MRU");
+        if (userMruRoot == null)
+        {
+            return;
+        }
+
+        foreach (var identityKey in userMruRoot.GetSubKeyNames())
+        {
+            TryGetFromRegistryMruKey(
+                documents,
+                $@"Software\Microsoft\Office\{version}\{appName}\User MRU\{identityKey}\File MRU",
+                ref sourceOrder);
+        }
+    }
+
+    [SupportedOSPlatform("windows")]
+    private void TryGetFromRegistryMruKey(List<OfficeRecentDocument> documents, string registryPath, ref int sourceOrder)
+    {
+        using var key = Registry.CurrentUser.OpenSubKey(registryPath);
+        if (key == null)
+        {
+            return;
+        }
+
+        var entries = key
+            .GetValueNames()
+            .Where(name => name.StartsWith("Item ", StringComparison.OrdinalIgnoreCase))
+            .Select(name => new
+            {
+                Name = name,
+                Order = ParseMruItemOrder(name),
+                Value = key.GetValue(name) as string
+            })
+            .Where(entry => !string.IsNullOrWhiteSpace(entry.Value))
+            .OrderBy(entry => entry.Order);
+
+        foreach (var entry in entries)
+        {
+            var (filePath, recentAccessTime) = ParseOfficeMruValue(entry.Value!);
+            AddDocumentIfExists(documents, filePath, 1, sourceOrder++, recentAccessTime);
+        }
+    }
+
+    private void TryGetFromRecentFolders(List<OfficeRecentDocument> documents)
+    {
+        try
+        {
+            var linkFiles = GetRecentFolders()
+                .Where(Directory.Exists)
+                .SelectMany(path => Directory.EnumerateFiles(path, "*.lnk"))
+                .Select(path => new FileInfo(path))
+                .OrderByDescending(info => info.LastWriteTimeUtc)
+                .ToList();
+
+            var sourceOrder = 0;
+            foreach (var linkFile in linkFiles)
+            {
+                var targetPath = GetShortcutTarget(linkFile.FullName);
+                AddDocumentIfExists(documents, targetPath, 2, sourceOrder++, linkFile.LastWriteTime);
+            }
+        }
+        catch (Exception ex)
+        {
+            AppLogger.Warn(LogCategory, "Failed to read Windows Recent shortcut folders.", ex);
+        }
+    }
+
+    private void TryGetFromJumpLists(List<OfficeRecentDocument> documents)
+    {
+        try
+        {
+            var jumpListFiles = GetJumpListFolders()
+                .Where(Directory.Exists)
+                .SelectMany(path => Directory.EnumerateFiles(path, "*.automaticDestinations-ms")
+                    .Concat(Directory.EnumerateFiles(path, "*.customDestinations-ms")))
+                .Select(path => new FileInfo(path))
+                .OrderByDescending(info => info.LastWriteTimeUtc)
+                .ToList();
+
+            var sourceOrder = 0;
+            foreach (var jumpListFile in jumpListFiles)
+            {
+                TryParseJumpListFile(jumpListFile, documents, ref sourceOrder);
+            }
+        }
+        catch (Exception ex)
+        {
+            AppLogger.Warn(LogCategory, "Failed to read Windows Jump Lists for Office documents.", ex);
+        }
+    }
+
+    private void TryParseJumpListFile(FileInfo jumpListFile, List<OfficeRecentDocument> documents, ref int sourceOrder)
+    {
+        try
+        {
+            var bytes = File.ReadAllBytes(jumpListFile.FullName);
+            foreach (var filePath in ExtractPossiblePaths(bytes))
+            {
+                AddDocumentIfExists(documents, filePath, 3, sourceOrder++, jumpListFile.LastWriteTime);
+            }
+        }
+        catch
+        {
+            // Ignore a single Jump List file and keep scanning the rest.
+        }
+    }
+
+    private static IEnumerable<string> ExtractPossiblePaths(byte[] bytes)
+    {
+        var paths = new HashSet<string>(StringComparer.OrdinalIgnoreCase);
+
+        foreach (var text in new[]
+                 {
+                     Encoding.Unicode.GetString(bytes),
+                     Encoding.Latin1.GetString(bytes)
+                 })
+        {
+            foreach (Match match in OfficeFilePathRegex.Matches(text))
+            {
+                var normalizedPath = NormalizeFilePath(match.Value);
+                if (!string.IsNullOrWhiteSpace(normalizedPath))
+                {
+                    paths.Add(normalizedPath);
+                }
+            }
+        }
+
+        return paths;
+    }
+
+    private void AddDocumentIfExists(
+        List<OfficeRecentDocument> documents,
+        string? filePath,
+        int sourcePriority,
+        int sourceOrder,
+        DateTime? recentAccessTime)
+    {
+        try
+        {
+            var normalizedPath = NormalizeFilePath(filePath);
+            if (string.IsNullOrWhiteSpace(normalizedPath))
+            {
+                return;
+            }
+
+            var extension = Path.GetExtension(normalizedPath).ToLowerInvariant();
+            if (!IsOfficeFile(extension) || !File.Exists(normalizedPath))
+            {
+                return;
+            }
+
+            var fileInfo = new FileInfo(normalizedPath);
+            documents.Add(new OfficeRecentDocument
+            {
+                FileName = Path.GetFileNameWithoutExtension(normalizedPath),
+                FilePath = normalizedPath,
+                Extension = extension,
+                LastModifiedTime = fileInfo.LastWriteTime,
+                FileSizeBytes = fileInfo.Length,
+                IconGlyph = GetIconGlyph(extension),
+                RecentAccessTime = recentAccessTime,
+                SourcePriority = sourcePriority,
+                SourceOrder = sourceOrder
+            });
+        }
+        catch
+        {
+            // Ignore a single file and keep processing the rest of the MRU list.
+        }
+    }
+
+    private static IEnumerable<string> GetRecentFolders()
+    {
         var appData = Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData);
-        folders.Add(Path.Combine(appData, "Microsoft", "Word", "Recent"));
-        folders.Add(Path.Combine(appData, "Microsoft", "Excel", "Recent"));
-        folders.Add(Path.Combine(appData, "Microsoft", "PowerPoint", "Recent"));
+        var localAppData = Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData);
 
-        return folders;
+        return new[]
+        {
+            Path.Combine(appData, "Microsoft", "Windows", "Recent"),
+            Path.Combine(appData, "Microsoft", "Word", "Recent"),
+            Path.Combine(appData, "Microsoft", "Excel", "Recent"),
+            Path.Combine(appData, "Microsoft", "PowerPoint", "Recent"),
+            Path.Combine(localAppData, "Microsoft", "Office", "Word", "Recent"),
+            Path.Combine(localAppData, "Microsoft", "Office", "Excel", "Recent"),
+            Path.Combine(localAppData, "Microsoft", "Office", "PowerPoint", "Recent")
+        }.Distinct(StringComparer.OrdinalIgnoreCase);
+    }
+
+    private static IEnumerable<string> GetJumpListFolders()
+    {
+        var appData = Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData);
+        var localAppData = Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData);
+
+        return new[]
+        {
+            Path.Combine(appData, "Microsoft", "Windows", "Recent", "AutomaticDestinations"),
+            Path.Combine(appData, "Microsoft", "Windows", "Recent", "CustomDestinations"),
+            Path.Combine(localAppData, "Microsoft", "Windows", "Recent", "AutomaticDestinations"),
+            Path.Combine(localAppData, "Microsoft", "Windows", "Recent", "CustomDestinations")
+        }.Distinct(StringComparer.OrdinalIgnoreCase);
+    }
+
+    private static bool IsOfficeVersionKey(string keyName)
+    {
+        return Version.TryParse(keyName, out _);
+    }
+
+    private static Version ParseVersionKey(string keyName)
+    {
+        return Version.TryParse(keyName, out var version) ? version : new Version(0, 0);
+    }
+
+    private static int ParseMruItemOrder(string valueName)
+    {
+        var numberText = valueName["Item ".Length..];
+        return int.TryParse(numberText, NumberStyles.Integer, CultureInfo.InvariantCulture, out var number)
+            ? number
+            : int.MaxValue;
+    }
+
+    private static (string? FilePath, DateTime? RecentAccessTime) ParseOfficeMruValue(string rawValue)
+    {
+        var filePath = ExtractOfficeFilePath(rawValue);
+        DateTime? recentAccessTime = null;
+
+        var timestampMatch = OfficeMruTimestampRegex.Match(rawValue);
+        if (timestampMatch.Success &&
+            long.TryParse(timestampMatch.Groups["filetime"].Value, NumberStyles.HexNumber, CultureInfo.InvariantCulture, out var fileTime) &&
+            fileTime > 0)
+        {
+            try
+            {
+                recentAccessTime = DateTime.FromFileTimeUtc(fileTime).ToLocalTime();
+            }
+            catch
+            {
+                recentAccessTime = null;
+            }
+        }
+
+        return (filePath, recentAccessTime);
+    }
+
+    private static string? ExtractOfficeFilePath(string rawValue)
+    {
+        if (string.IsNullOrWhiteSpace(rawValue))
+        {
+            return null;
+        }
+
+        var markerIndex = rawValue.LastIndexOf('*');
+        var candidate = markerIndex >= 0
+            ? rawValue[(markerIndex + 1)..]
+            : rawValue;
+
+        var normalizedCandidate = NormalizeFilePath(candidate);
+        if (!string.IsNullOrWhiteSpace(normalizedCandidate) && IsOfficeFile(Path.GetExtension(normalizedCandidate)))
+        {
+            return normalizedCandidate;
+        }
+
+        var match = OfficeFilePathRegex.Match(rawValue);
+        return match.Success ? NormalizeFilePath(match.Value) : null;
+    }
+
+    private static string? NormalizeFilePath(string? rawPath)
+    {
+        if (string.IsNullOrWhiteSpace(rawPath))
+        {
+            return null;
+        }
+
+        var candidate = rawPath.Trim('\0', ' ', '"');
+        candidate = Environment.ExpandEnvironmentVariables(candidate);
+
+        if (Uri.TryCreate(candidate, UriKind.Absolute, out var uri) && uri.IsFile)
+        {
+            candidate = uri.LocalPath;
+        }
+
+        candidate = candidate.Replace('/', '\\');
+        return string.IsNullOrWhiteSpace(candidate) ? null : candidate;
     }
 
     private static bool IsOfficeFile(string extension)
     {
-        return OfficeExtensions.Contains(extension) ||
-               ExcelExtensions.Contains(extension) ||
-               PowerPointExtensions.Contains(extension);
+        return OfficeExtensions.Contains(extension, StringComparer.OrdinalIgnoreCase) ||
+               ExcelExtensions.Contains(extension, StringComparer.OrdinalIgnoreCase) ||
+               PowerPointExtensions.Contains(extension, StringComparer.OrdinalIgnoreCase);
     }
 
     private static string GetIconGlyph(string extension)
@@ -150,4 +703,40 @@ public sealed class OfficeRecentDocumentsService : IOfficeRecentDocumentsService
     {
         return ShortcutHelper.GetShortcutTarget(lnkPath);
     }
+
+    private static object? GetPropertyValue(object? instance, string propertyName)
+    {
+        return instance?.GetType().GetProperty(propertyName)?.GetValue(instance);
+    }
+
+    private static string? GetStringProperty(object? instance, string propertyName)
+    {
+        return GetPropertyValue(instance, propertyName) as string;
+    }
+
+    private static int GetIntProperty(object instance, string propertyName)
+    {
+        var value = GetPropertyValue(instance, propertyName);
+        return value switch
+        {
+            int intValue => intValue,
+            short shortValue => shortValue,
+            long longValue => (int)longValue,
+            _ => 0
+        };
+    }
+
+    private static void TrySetProperty(object? instance, string propertyName, object value)
+    {
+        var property = instance?.GetType().GetProperty(propertyName);
+        if (property?.CanWrite == true)
+        {
+            property.SetValue(instance, value);
+        }
+    }
+
+    private static void InvokeParameterlessMethod(object instance, string methodName)
+    {
+        instance.GetType().GetMethod(methodName, Type.EmptyTypes)?.Invoke(instance, null);
+    }
 }

LanMountainDesktop/Services/RemovableStorageService.cs

@@ -0,0 +1,310 @@
+using System;
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.Globalization;
+using System.IO;
+using System.Linq;
+using System.Reflection;
+using System.Runtime.InteropServices;
+
+namespace LanMountainDesktop.Services;
+
+public sealed record RemovableStorageDrive(
+    string RootPath,
+    string DriveLetter,
+    string? VolumeLabel);
+
+public interface IRemovableStorageService
+{
+    IReadOnlyList<RemovableStorageDrive> GetConnectedDrives();
+
+    bool OpenDrive(string rootPath);
+
+    bool EjectDrive(string rootPath);
+}
+
+public sealed class RemovableStorageService : IRemovableStorageService
+{
+    public IReadOnlyList<RemovableStorageDrive> GetConnectedDrives()
+    {
+        var drives = new List<RemovableStorageDrive>();
+
+        foreach (var drive in DriveInfo.GetDrives())
+        {
+            try
+            {
+                if (drive.DriveType != DriveType.Removable || !drive.IsReady)
+                {
+                    continue;
+                }
+
+                var rootPath = NormalizeRootPath(drive.Name);
+                if (string.IsNullOrWhiteSpace(rootPath))
+                {
+                    continue;
+                }
+
+                var driveLetter = rootPath.TrimEnd(Path.DirectorySeparatorChar, Path.AltDirectorySeparatorChar);
+                var volumeLabel = string.IsNullOrWhiteSpace(drive.VolumeLabel)
+                    ? null
+                    : drive.VolumeLabel.Trim();
+
+                drives.Add(new RemovableStorageDrive(rootPath, driveLetter, volumeLabel));
+            }
+            catch (Exception ex)
+            {
+                AppLogger.Warn("RemovableStorage", $"Failed to inspect drive '{drive.Name}'.", ex);
+            }
+        }
+
+        return drives
+            .OrderBy(drive => drive.DriveLetter, StringComparer.OrdinalIgnoreCase)
+            .ToArray();
+    }
+
+    public bool OpenDrive(string rootPath)
+    {
+        var normalizedRootPath = NormalizeRootPath(rootPath);
+        if (string.IsNullOrWhiteSpace(normalizedRootPath))
+        {
+            return false;
+        }
+
+        try
+        {
+            Process.Start(new ProcessStartInfo
+            {
+                FileName = normalizedRootPath,
+                UseShellExecute = true
+            });
+            return true;
+        }
+        catch (Exception ex)
+        {
+            AppLogger.Warn("RemovableStorage", $"Failed to open drive '{normalizedRootPath}'.", ex);
+            return false;
+        }
+    }
+
+    public bool EjectDrive(string rootPath)
+    {
+        if (!OperatingSystem.IsWindows())
+        {
+            return false;
+        }
+
+        var normalizedRootPath = NormalizeRootPath(rootPath);
+        if (string.IsNullOrWhiteSpace(normalizedRootPath))
+        {
+            return false;
+        }
+
+        object? shellApplication = null;
+        object? computerFolder = null;
+        object? driveItem = null;
+
+        try
+        {
+            var shellType = Type.GetTypeFromProgID("Shell.Application");
+            if (shellType is null)
+            {
+                return false;
+            }
+
+            shellApplication = Activator.CreateInstance(shellType);
+            if (shellApplication is null)
+            {
+                return false;
+            }
+
+            computerFolder = shellType.InvokeMember(
+                "NameSpace",
+                BindingFlags.InvokeMethod,
+                binder: null,
+                target: shellApplication,
+                args: [17]);
+            if (computerFolder is null)
+            {
+                return false;
+            }
+
+            var driveToken = normalizedRootPath.TrimEnd(Path.DirectorySeparatorChar, Path.AltDirectorySeparatorChar);
+            driveItem = computerFolder.GetType().InvokeMember(
+                "ParseName",
+                BindingFlags.InvokeMethod,
+                binder: null,
+                target: computerFolder,
+                args: [driveToken]);
+            if (driveItem is null)
+            {
+                return false;
+            }
+
+            if (TryInvokeVerb(driveItem, "Eject"))
+            {
+                return true;
+            }
+
+            return TryInvokeLocalizedEjectVerb(driveItem);
+        }
+        catch (Exception ex)
+        {
+            AppLogger.Warn("RemovableStorage", $"Failed to eject drive '{normalizedRootPath}'.", ex);
+            return false;
+        }
+        finally
+        {
+            ReleaseComObject(driveItem);
+            ReleaseComObject(computerFolder);
+            ReleaseComObject(shellApplication);
+        }
+    }
+
+    private static bool TryInvokeLocalizedEjectVerb(object driveItem)
+    {
+        object? verbs = null;
+
+        try
+        {
+            verbs = driveItem.GetType().InvokeMember(
+                "Verbs",
+                BindingFlags.InvokeMethod,
+                binder: null,
+                target: driveItem,
+                args: null);
+            if (verbs is null)
+            {
+                return false;
+            }
+
+            var verbsType = verbs.GetType();
+            var countObject = verbsType.InvokeMember(
+                "Count",
+                BindingFlags.GetProperty,
+                binder: null,
+                target: verbs,
+                args: null);
+            var count = countObject is null
+                ? 0
+                : Convert.ToInt32(countObject, CultureInfo.InvariantCulture);
+
+            for (var index = 0; index < count; index++)
+            {
+                object? verb = null;
+
+                try
+                {
+                    verb = verbsType.InvokeMember(
+                        "Item",
+                        BindingFlags.InvokeMethod,
+                        binder: null,
+                        target: verbs,
+                        args: [index]);
+                    if (verb is null)
+                    {
+                        continue;
+                    }
+
+                    var verbNameObject = verb.GetType().InvokeMember(
+                        "Name",
+                        BindingFlags.GetProperty,
+                        binder: null,
+                        target: verb,
+                        args: null);
+                    var verbName = Convert.ToString(verbNameObject, CultureInfo.InvariantCulture);
+                    if (!IsEjectVerbName(verbName))
+                    {
+                        continue;
+                    }
+
+                    verb.GetType().InvokeMember(
+                        "DoIt",
+                        BindingFlags.InvokeMethod,
+                        binder: null,
+                        target: verb,
+                        args: null);
+                    return true;
+                }
+                finally
+                {
+                    ReleaseComObject(verb);
+                }
+            }
+
+            return false;
+        }
+        finally
+        {
+            ReleaseComObject(verbs);
+        }
+    }
+
+    private static bool TryInvokeVerb(object driveItem, string verbName)
+    {
+        try
+        {
+            driveItem.GetType().InvokeMember(
+                "InvokeVerb",
+                BindingFlags.InvokeMethod,
+                binder: null,
+                target: driveItem,
+                args: [verbName]);
+            return true;
+        }
+        catch
+        {
+            return false;
+        }
+    }
+
+    private static bool IsEjectVerbName(string? verbName)
+    {
+        if (string.IsNullOrWhiteSpace(verbName))
+        {
+            return false;
+        }
+
+        var normalized = string.Concat(
+            verbName
+                .Where(character => !char.IsWhiteSpace(character) && character != '&'))
+            .Trim();
+
+        return normalized.Contains("Eject", StringComparison.OrdinalIgnoreCase) ||
+               normalized.Contains("弹出", StringComparison.Ordinal) ||
+               normalized.Contains("安全删除", StringComparison.Ordinal) ||
+               normalized.Contains("卸载", StringComparison.Ordinal);
+    }
+
+    private static string NormalizeRootPath(string? rootPath)
+    {
+        if (string.IsNullOrWhiteSpace(rootPath))
+        {
+            return string.Empty;
+        }
+
+        var trimmed = rootPath.Trim();
+        if (trimmed.Length == 1 && char.IsLetter(trimmed[0]))
+        {
+            return string.Create(CultureInfo.InvariantCulture, $"{trimmed}:{Path.DirectorySeparatorChar}");
+        }
+
+        if (trimmed.Length == 2 && char.IsLetter(trimmed[0]) && trimmed[1] == ':')
+        {
+            return trimmed + Path.DirectorySeparatorChar;
+        }
+
+        var normalized = trimmed.Replace(Path.AltDirectorySeparatorChar, Path.DirectorySeparatorChar);
+        var resolvedRoot = Path.GetPathRoot(normalized);
+        return string.IsNullOrWhiteSpace(resolvedRoot)
+            ? normalized
+            : resolvedRoot;
+    }
+
+    private static void ReleaseComObject(object? value)
+    {
+        if (value is not null && Marshal.IsComObject(value))
+        {
+            Marshal.FinalReleaseComObject(value);
+        }
+    }
+}

LanMountainDesktop/Services/Settings/SettingsContracts.cs

@@ -11,12 +11,11 @@ namespace LanMountainDesktop.Services.Settings;
 public enum WallpaperMediaType
 {
     None,
-    Image,
-    Video
+    Image
 }
 
 public sealed record GridSettingsState(int ShortSideCells, string SpacingPreset, int EdgeInsetPercent);
-public sealed record WallpaperSettingsState(string? WallpaperPath, string Type, string? Color, string Placement);
+public sealed record WallpaperSettingsState(string? WallpaperPath, string Type, string? Color, string Placement, string? CustomColor = null);
 public sealed record ThemeAppearanceSettingsState(
     bool IsNightMode,
     string? ThemeColor,
@@ -30,6 +29,7 @@ public sealed record StatusBarSettingsState(
     bool EnableDynamicTaskbarActions,
     string TaskbarLayoutMode,
     string ClockDisplayFormat,
+    bool ClockTransparentBackground,
     string SpacingMode,
     int CustomSpacingPercent);
 public sealed record WeatherSettingsState(
@@ -48,7 +48,6 @@ public sealed record PrivacySettingsState(
     bool UploadAnonymousCrashData,
     bool UploadAnonymousUsageData);
 public sealed record UpdateSettingsState(
-    bool AutoCheckUpdates,
     bool IncludePrereleaseUpdates,
     string UpdateChannel,
     string UpdateMode,

LanMountainDesktop/Services/Settings/SettingsDomainServices.cs

@@ -147,11 +147,6 @@ internal sealed class WallpaperMediaService : IWallpaperMediaService
         ".png", ".jpg", ".jpeg", ".bmp", ".gif", ".webp"
     };
 
-    private static readonly HashSet<string> VideoExtensions = new(StringComparer.OrdinalIgnoreCase)
-    {
-        ".mp4", ".mkv", ".webm", ".avi", ".mov", ".m4v"
-    };
-
     private readonly string _wallpapersDirectory;
 
     public WallpaperMediaService()
@@ -180,11 +175,6 @@ internal sealed class WallpaperMediaService : IWallpaperMediaService
             return WallpaperMediaType.Image;
         }
 
-        if (VideoExtensions.Contains(extension))
-        {
-            return WallpaperMediaType.Video;
-        }
-
         return WallpaperMediaType.None;
     }
 
@@ -371,6 +361,7 @@ internal sealed class StatusBarSettingsService : IStatusBarSettingsService
             snapshot.EnableDynamicTaskbarActions,
             snapshot.TaskbarLayoutMode,
             snapshot.ClockDisplayFormat,
+            snapshot.StatusBarClockTransparentBackground,
             snapshot.StatusBarSpacingMode,
             snapshot.StatusBarCustomSpacingPercent);
     }
@@ -383,6 +374,7 @@ internal sealed class StatusBarSettingsService : IStatusBarSettingsService
         snapshot.EnableDynamicTaskbarActions = state.EnableDynamicTaskbarActions;
         snapshot.TaskbarLayoutMode = state.TaskbarLayoutMode;
         snapshot.ClockDisplayFormat = state.ClockDisplayFormat;
+        snapshot.StatusBarClockTransparentBackground = state.ClockTransparentBackground;
         snapshot.StatusBarSpacingMode = state.SpacingMode;
         snapshot.StatusBarCustomSpacingPercent = state.CustomSpacingPercent;
         _settingsService.SaveSnapshot(
@@ -395,6 +387,7 @@ internal sealed class StatusBarSettingsService : IStatusBarSettingsService
                 nameof(AppSettingsSnapshot.EnableDynamicTaskbarActions),
                 nameof(AppSettingsSnapshot.TaskbarLayoutMode),
                 nameof(AppSettingsSnapshot.ClockDisplayFormat),
+                nameof(AppSettingsSnapshot.StatusBarClockTransparentBackground),
                 nameof(AppSettingsSnapshot.StatusBarSpacingMode),
                 nameof(AppSettingsSnapshot.StatusBarCustomSpacingPercent)
             ]);
@@ -638,7 +631,6 @@ internal sealed class UpdateSettingsService : IUpdateSettingsService, IDisposabl
             snapshot.UpdateChannel,
             snapshot.IncludePrereleaseUpdates);
         return new UpdateSettingsState(
-            snapshot.AutoCheckUpdates,
             string.Equals(normalizedChannel, UpdateSettingsValues.ChannelPreview, StringComparison.OrdinalIgnoreCase),
             normalizedChannel,
             UpdateSettingsValues.NormalizeMode(snapshot.UpdateMode),
@@ -656,7 +648,6 @@ internal sealed class UpdateSettingsService : IUpdateSettingsService, IDisposabl
         var normalizedChannel = UpdateSettingsValues.NormalizeChannel(
             state.UpdateChannel,
             state.IncludePrereleaseUpdates);
-        snapshot.AutoCheckUpdates = state.AutoCheckUpdates;
         snapshot.IncludePrereleaseUpdates = string.Equals(
             normalizedChannel,
             UpdateSettingsValues.ChannelPreview,
@@ -682,7 +673,7 @@ internal sealed class UpdateSettingsService : IUpdateSettingsService, IDisposabl
             snapshot,
             changedKeys:
             [
-                nameof(AppSettingsSnapshot.AutoCheckUpdates),
+                nameof(AppSettingsSnapshot.IncludePrereleaseUpdates),
                 nameof(AppSettingsSnapshot.IncludePrereleaseUpdates),
                 nameof(AppSettingsSnapshot.UpdateChannel),
                 nameof(AppSettingsSnapshot.UpdateMode),

LanMountainDesktop/Services/Settings/SettingsWindowService.cs

@@ -294,6 +294,8 @@ internal sealed class SettingsWindowService : ISettingsWindowService
             if (languageChanged)
             {
                 var regionState = _settingsFacade.Region.Get();
+                // 清除本地化缓存，强制重新加载语言文件
+                _localizationService.ClearCache();
                 _viewModel.RefreshLanguage(regionState.LanguageCode);
                 _pageRegistry.Rebuild();
                 _window.ReloadPages(_viewModel.CurrentPageId);

LanMountainDesktop/Services/UpdateWorkflowService.cs

@@ -131,13 +131,10 @@ public sealed class UpdateWorkflowService
         CancellationToken cancellationToken = default)
     {
         var state = _settingsFacade.Update.Get();
-        if (!state.AutoCheckUpdates)
-        {
-            return;
-        }
 
         try
         {
+            // Always check for updates on startup (removed AutoCheckUpdates check)
             var result = await CheckForUpdatesAsync(currentVersion, cancellationToken);
             if (!result.Success || !result.IsUpdateAvailable || result.PreferredAsset is null)
             {
@@ -145,12 +142,14 @@ public sealed class UpdateWorkflowService
             }
 
             var normalizedMode = UpdateSettingsValues.NormalizeMode(state.UpdateMode);
-            if (string.Equals(normalizedMode, UpdateSettingsValues.ModeManual, StringComparison.OrdinalIgnoreCase))
+            
+            // For "Silent Download" and "Silent Install" modes, automatically download the update
+            if (string.Equals(normalizedMode, UpdateSettingsValues.ModeDownloadThenConfirm, StringComparison.OrdinalIgnoreCase) ||
+                string.Equals(normalizedMode, UpdateSettingsValues.ModeSilentOnExit, StringComparison.OrdinalIgnoreCase))
             {
-                return;
+                await DownloadReleaseAsync(result, cancellationToken: cancellationToken);
             }
-
-            await DownloadReleaseAsync(result, cancellationToken: cancellationToken);
+            // For "Manual" mode, just check but don't download
         }
         catch (OperationCanceledException)
         {

LanMountainDesktop/Services/WhiteboardNotePersistenceService.cs

@@ -0,0 +1,338 @@
+using System;
+using System.Text.Json;
+using LanMountainDesktop.Models;
+using Microsoft.Data.Sqlite;
+
+namespace LanMountainDesktop.Services;
+
+public sealed class WhiteboardNotePersistenceService : IWhiteboardNotePersistenceService
+{
+    private const int DefaultCleanupBatchSize = 256;
+    private static readonly JsonSerializerOptions JsonOptions = new()
+    {
+        PropertyNameCaseInsensitive = true
+    };
+
+    private readonly object _schemaSyncRoot = new();
+    private readonly AppDatabaseService _databaseService;
+    private bool _schemaInitialized;
+
+    public WhiteboardNotePersistenceService(AppDatabaseService? databaseService = null)
+    {
+        _databaseService = databaseService ?? AppDatabaseServiceFactory.CreateDefault();
+    }
+
+    public WhiteboardNoteSnapshot LoadNote(string componentId, string? placementId, int retentionDays)
+    {
+        if (!TryNormalizeKeys(componentId, placementId, out var normalizedComponentId, out var normalizedPlacementId))
+        {
+            return new WhiteboardNoteSnapshot();
+        }
+
+        try
+        {
+            using var connection = OpenConnection();
+            DeleteExpiredInternal(
+                connection,
+                normalizedComponentId,
+                normalizedPlacementId,
+                WhiteboardNoteRetentionPolicy.NormalizeDays(retentionDays),
+                DateTimeOffset.UtcNow);
+
+            using var command = connection.CreateCommand();
+            command.CommandText = """
+                SELECT note_json, saved_at_utc_ms
+                FROM whiteboard_notes
+                WHERE component_id = $componentId
+                  AND placement_id = $placementId
+                LIMIT 1;
+                """;
+            command.Parameters.AddWithValue("$componentId", normalizedComponentId);
+            command.Parameters.AddWithValue("$placementId", normalizedPlacementId);
+
+            using var reader = command.ExecuteReader();
+            if (!reader.Read() || reader.IsDBNull(0))
+            {
+                return new WhiteboardNoteSnapshot();
+            }
+
+            var json = reader.GetString(0);
+            if (string.IsNullOrWhiteSpace(json))
+            {
+                return new WhiteboardNoteSnapshot();
+            }
+
+            var snapshot = JsonSerializer.Deserialize<WhiteboardNoteSnapshot>(json, JsonOptions) ?? new WhiteboardNoteSnapshot();
+            if (!reader.IsDBNull(1))
+            {
+                snapshot.SavedUtc = DateTimeOffset.FromUnixTimeMilliseconds(reader.GetInt64(1));
+            }
+
+            if (IsExpired(snapshot, retentionDays))
+            {
+                DeleteNote(normalizedComponentId, normalizedPlacementId);
+                return new WhiteboardNoteSnapshot();
+            }
+
+            return snapshot.Clone();
+        }
+        catch
+        {
+            return new WhiteboardNoteSnapshot();
+        }
+    }
+
+    public void SaveNote(string componentId, string? placementId, WhiteboardNoteSnapshot snapshot, int retentionDays)
+    {
+        if (!TryNormalizeKeys(componentId, placementId, out var normalizedComponentId, out var normalizedPlacementId))
+        {
+            return;
+        }
+
+        try
+        {
+            var nowUtc = DateTimeOffset.UtcNow;
+            var persistedSnapshot = snapshot?.Clone() ?? new WhiteboardNoteSnapshot();
+            persistedSnapshot.SavedUtc = nowUtc;
+            var expiresUtc = GetExpirationUtc(persistedSnapshot, retentionDays) ?? nowUtc.AddDays(WhiteboardNoteRetentionPolicy.DefaultDays);
+            var json = JsonSerializer.Serialize(persistedSnapshot, JsonOptions);
+
+            using var connection = OpenConnection();
+            using var command = connection.CreateCommand();
+            command.CommandText = """
+                INSERT INTO whiteboard_notes(
+                    component_id,
+                    placement_id,
+                    note_json,
+                    saved_at_utc_ms,
+                    expires_at_utc_ms,
+                    updated_at_utc_ms)
+                VALUES(
+                    $componentId,
+                    $placementId,
+                    $noteJson,
+                    $savedAtUtcMs,
+                    $expiresAtUtcMs,
+                    $updatedAtUtcMs)
+                ON CONFLICT(component_id, placement_id) DO UPDATE SET
+                    note_json = excluded.note_json,
+                    saved_at_utc_ms = excluded.saved_at_utc_ms,
+                    expires_at_utc_ms = excluded.expires_at_utc_ms,
+                    updated_at_utc_ms = excluded.updated_at_utc_ms;
+                """;
+            command.Parameters.AddWithValue("$componentId", normalizedComponentId);
+            command.Parameters.AddWithValue("$placementId", normalizedPlacementId);
+            command.Parameters.AddWithValue("$noteJson", json);
+            command.Parameters.AddWithValue("$savedAtUtcMs", persistedSnapshot.SavedUtc.ToUnixTimeMilliseconds());
+            command.Parameters.AddWithValue("$expiresAtUtcMs", expiresUtc.ToUnixTimeMilliseconds());
+            command.Parameters.AddWithValue("$updatedAtUtcMs", nowUtc.ToUnixTimeMilliseconds());
+            command.ExecuteNonQuery();
+        }
+        catch
+        {
+            // Keep whiteboard usable even when persistence is unavailable.
+        }
+    }
+
+    public bool DeleteNote(string componentId, string? placementId)
+    {
+        if (!TryNormalizeKeys(componentId, placementId, out var normalizedComponentId, out var normalizedPlacementId))
+        {
+            return false;
+        }
+
+        try
+        {
+            using var connection = OpenConnection();
+            using var command = connection.CreateCommand();
+            command.CommandText = """
+                DELETE FROM whiteboard_notes
+                WHERE component_id = $componentId
+                  AND placement_id = $placementId;
+                """;
+            command.Parameters.AddWithValue("$componentId", normalizedComponentId);
+            command.Parameters.AddWithValue("$placementId", normalizedPlacementId);
+            return command.ExecuteNonQuery() > 0;
+        }
+        catch
+        {
+            return false;
+        }
+    }
+
+    public bool TryDeleteExpiredNote(string componentId, string? placementId, int retentionDays)
+    {
+        if (!TryNormalizeKeys(componentId, placementId, out var normalizedComponentId, out var normalizedPlacementId))
+        {
+            return false;
+        }
+
+        try
+        {
+            using var connection = OpenConnection();
+            return DeleteExpiredInternal(
+                connection,
+                normalizedComponentId,
+                normalizedPlacementId,
+                WhiteboardNoteRetentionPolicy.NormalizeDays(retentionDays),
+                DateTimeOffset.UtcNow);
+        }
+        catch
+        {
+            return false;
+        }
+    }
+
+    public int DeleteExpiredNotesBatch(int batchSize = DefaultCleanupBatchSize, DateTimeOffset? now = null)
+    {
+        try
+        {
+            using var connection = OpenConnection();
+            using var command = connection.CreateCommand();
+            command.CommandText = """
+                DELETE FROM whiteboard_notes
+                WHERE rowid IN (
+                    SELECT rowid
+                    FROM whiteboard_notes
+                    WHERE expires_at_utc_ms <= $nowUtcMs
+                    ORDER BY expires_at_utc_ms ASC
+                    LIMIT $batchSize
+                );
+                """;
+            command.Parameters.AddWithValue("$nowUtcMs", (now ?? DateTimeOffset.UtcNow).ToUnixTimeMilliseconds());
+            command.Parameters.AddWithValue("$batchSize", NormalizeBatchSize(batchSize));
+            return command.ExecuteNonQuery();
+        }
+        catch
+        {
+            return 0;
+        }
+    }
+
+    public bool IsExpired(WhiteboardNoteSnapshot snapshot, int retentionDays, DateTimeOffset? now = null)
+    {
+        if (snapshot is null)
+        {
+            return false;
+        }
+
+        var expirationUtc = GetExpirationUtc(snapshot, retentionDays);
+        if (!expirationUtc.HasValue)
+        {
+            return false;
+        }
+
+        return expirationUtc.Value <= (now ?? DateTimeOffset.UtcNow);
+    }
+
+    public DateTimeOffset? GetExpirationUtc(WhiteboardNoteSnapshot snapshot, int retentionDays)
+    {
+        if (snapshot is null || snapshot.SavedUtc == default)
+        {
+            return null;
+        }
+
+        return snapshot.SavedUtc.AddDays(WhiteboardNoteRetentionPolicy.NormalizeDays(retentionDays));
+    }
+
+    private SqliteConnection OpenConnection()
+    {
+        var connection = _databaseService.OpenConnection();
+        EnsureSchema(connection);
+        return connection;
+    }
+
+    private void EnsureSchema(SqliteConnection connection)
+    {
+        if (_schemaInitialized)
+        {
+            return;
+        }
+
+        lock (_schemaSyncRoot)
+        {
+            if (_schemaInitialized)
+            {
+                return;
+            }
+
+            using var command = connection.CreateCommand();
+            command.CommandText = """
+                CREATE TABLE IF NOT EXISTS whiteboard_notes (
+                    component_id TEXT NOT NULL,
+                    placement_id TEXT NOT NULL,
+                    note_json TEXT NOT NULL,
+                    saved_at_utc_ms INTEGER NOT NULL,
+                    expires_at_utc_ms INTEGER NOT NULL,
+                    updated_at_utc_ms INTEGER NOT NULL,
+                    PRIMARY KEY (component_id, placement_id)
+                );
+
+                CREATE INDEX IF NOT EXISTS idx_whiteboard_notes_expires_at
+                    ON whiteboard_notes(expires_at_utc_ms);
+                """;
+            command.ExecuteNonQuery();
+            _schemaInitialized = true;
+        }
+    }
+
+    private static bool DeleteExpiredInternal(
+        SqliteConnection connection,
+        string componentId,
+        string placementId,
+        int retentionDays,
+        DateTimeOffset nowUtc)
+    {
+        using var selectCommand = connection.CreateCommand();
+        selectCommand.CommandText = """
+            SELECT saved_at_utc_ms
+            FROM whiteboard_notes
+            WHERE component_id = $componentId
+              AND placement_id = $placementId
+            LIMIT 1;
+            """;
+        selectCommand.Parameters.AddWithValue("$componentId", componentId);
+        selectCommand.Parameters.AddWithValue("$placementId", placementId);
+
+        var scalar = selectCommand.ExecuteScalar();
+        if (scalar is not long savedAtUtcMs)
+        {
+            return false;
+        }
+
+        var savedUtc = DateTimeOffset.FromUnixTimeMilliseconds(savedAtUtcMs);
+        var expiresUtc = savedUtc.AddDays(WhiteboardNoteRetentionPolicy.NormalizeDays(retentionDays));
+        if (expiresUtc > nowUtc)
+        {
+            return false;
+        }
+
+        using var deleteCommand = connection.CreateCommand();
+        deleteCommand.CommandText = """
+            DELETE FROM whiteboard_notes
+            WHERE component_id = $componentId
+              AND placement_id = $placementId;
+            """;
+        deleteCommand.Parameters.AddWithValue("$componentId", componentId);
+        deleteCommand.Parameters.AddWithValue("$placementId", placementId);
+        return deleteCommand.ExecuteNonQuery() > 0;
+    }
+
+    private static bool TryNormalizeKeys(
+        string componentId,
+        string? placementId,
+        out string normalizedComponentId,
+        out string normalizedPlacementId)
+    {
+        normalizedComponentId = componentId?.Trim() ?? string.Empty;
+        normalizedPlacementId = placementId?.Trim() ?? string.Empty;
+        return !string.IsNullOrWhiteSpace(normalizedComponentId);
+    }
+
+    private static int NormalizeBatchSize(int batchSize)
+    {
+        return batchSize <= 0
+            ? DefaultCleanupBatchSize
+            : Math.Clamp(batchSize, 1, 4096);
+    }
+}

LanMountainDesktop/Styles/ComponentEditorThemeResources.axaml

@@ -1,5 +1,6 @@
 <Styles xmlns="https://github.com/avaloniaui"
-        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
+        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        xmlns:assists="clr-namespace:Material.Styles.Assists;assembly=Material.Styles">
     <Style Selector="Window.component-editor-window">
         <Setter Property="Background" Value="{DynamicResource EditorWindowBackgroundBrush}" />
     </Style>
@@ -74,7 +75,21 @@
     </Style>
 
     <Style Selector="Window.component-editor-window RadioButton">
+        <Setter Property="Theme" Value="{StaticResource MaterialRadioButton}" />
         <Setter Property="Foreground" Value="{DynamicResource ComponentEditorPrimaryTextBrush}" />
+        <Setter Property="Margin" Value="0,2" />
+        <Setter Property="VerticalContentAlignment" Value="Center" />
+        <Setter Property="assists:SelectionControlAssist.Size" Value="20" />
+        <Setter Property="assists:SelectionControlAssist.Foreground" Value="{DynamicResource ComponentEditorSecondaryTextBrush}" />
+        <Setter Property="assists:SelectionControlAssist.InnerForeground" Value="{DynamicResource EditorPrimaryBrush}" />
+    </Style>
+
+    <Style Selector="Window.component-editor-window RadioButton:pointerover">
+        <Setter Property="assists:SelectionControlAssist.Foreground" Value="{DynamicResource EditorSelectOutlineStrongBrush}" />
+    </Style>
+
+    <Style Selector="Window.component-editor-window RadioButton:checked">
+        <Setter Property="assists:SelectionControlAssist.Foreground" Value="{DynamicResource EditorPrimaryBrush}" />
     </Style>
 
     <Style Selector="Window.component-editor-window ToggleSwitch">

LanMountainDesktop/Styles/GlassModule.axaml

@@ -165,7 +165,13 @@
         <Setter Property="RenderTransform" Value="scale(1.05)" />
     </Style>
 
-    <Style Selector="Border.glass-panel">
+    <!--
+        半透明表面样式类
+        注意：这些样式使用纯色半透明画刷模拟玻璃效果，并非真正的 Mica/Acrylic 模糊材质。
+        真正的 Mica/Acrylic 效果仅通过 WindowTransparencyLevel 在独立窗口上应用。
+    -->
+
+    <Style Selector="Border.surface-translucent-panel">
         <Setter Property="Background" Value="{DynamicResource AdaptiveGlassPanelBackgroundBrush}" />
         <Setter Property="BorderBrush" Value="{DynamicResource AdaptiveGlassPanelBorderBrush}" />
         <Setter Property="BorderThickness" Value="1.2" />
@@ -174,7 +180,7 @@
         <Setter Property="BoxShadow" Value="0 4 12 #1A000000" />
     </Style>
 
-    <Style Selector="Border.glass-strong">
+    <Style Selector="Border.surface-translucent-strong">
         <Setter Property="Background" Value="{DynamicResource AdaptiveGlassStrongBackgroundBrush}" />
         <Setter Property="BorderBrush" Value="{DynamicResource AdaptiveGlassStrongBorderBrush}" />
         <Setter Property="BorderThickness" Value="1.5" />
@@ -183,7 +189,7 @@
         <Setter Property="BoxShadow" Value="0 8 24 #26000000" />
     </Style>
 
-    <Style Selector="Border.glass-island">
+    <Style Selector="Border.surface-translucent-island">
         <Setter Property="Background" Value="{DynamicResource AdaptiveDockGlassBackgroundBrush}" />
         <Setter Property="BorderBrush" Value="{DynamicResource AdaptiveDockGlassBorderBrush}" />
         <Setter Property="BorderThickness" Value="1.5" />
@@ -197,7 +203,7 @@
         </Setter>
     </Style>
 
-    <Style Selector="Border.mica-strong">
+    <Style Selector="Border.surface-solid-strong">
         <Setter Property="Background" Value="{DynamicResource AdaptiveGlassStrongBackgroundBrush}" />
         <Setter Property="BorderThickness" Value="0" />
         <Setter Property="CornerRadius" Value="36" />
@@ -205,11 +211,18 @@
         <Setter Property="BoxShadow" Value="0 8 22 #2A000000" />
     </Style>
 
-    <Style Selector="Border.glass-overlay">
+    <Style Selector="Border.surface-translucent-overlay">
         <Setter Property="Background" Value="{DynamicResource AdaptiveGlassOverlayBackgroundBrush}" />
         <Setter Property="BorderThickness" Value="0" />
         <Setter Property="CornerRadius" Value="0" />
         <Setter Property="Opacity" Value="{DynamicResource AdaptiveGlassOverlayOpacity}" />
     </Style>
 
+    <!-- 向后兼容的旧样式类（已弃用） -->
+    <Style Selector="Border.glass-panel" />
+    <Style Selector="Border.glass-strong" />
+    <Style Selector="Border.glass-island" />
+    <Style Selector="Border.mica-strong" />
+    <Style Selector="Border.glass-overlay" />
+
 </Styles>

LanMountainDesktop/ViewModels/PluginMarketSettingsPageViewModels.cs

@@ -564,11 +564,19 @@ public sealed partial class PluginMarketSettingsPageViewModel : ViewModelBase
             {
                 RefreshInstalledSnapshot();
                 RefreshItemStates();
+                
+                // 设置更明显的状态消息
+                var pluginName = result.PluginName ?? item.Name;
                 StatusMessage = string.Format(
                     CultureInfo.CurrentCulture,
-                    L("market.status.install_success_format", "Plugin '{0}' has been staged. Restart the app to apply it."),
-                    result.PluginName ?? item.Name);
-                RestartRequested?.Invoke(RestartRequiredMessage);
+                    L("market.status.install_success_restart_format", "✓ Plugin '{0}' installed successfully! Please restart the application to activate it."),
+                    pluginName);
+                
+                // 触发重启提醒
+                RestartRequested?.Invoke(string.Format(
+                    CultureInfo.CurrentCulture,
+                    L("market.dialog.restart_message_format", "Plugin '{0}' has been installed successfully.\n\nTo use this plugin, you need to restart the application now.\n\nWould you like to restart?"),
+                    pluginName));
                 return;
             }
 

LanMountainDesktop/ViewModels/PrivacyPolicyViewModel.cs

@@ -0,0 +1,92 @@
+using System;
+using System.IO;
+using System.Reflection;
+using System.Threading.Tasks;
+using CommunityToolkit.Mvvm.ComponentModel;
+using LanMountainDesktop.PluginSdk;
+using LanMountainDesktop.Services;
+
+namespace LanMountainDesktop.ViewModels;
+
+public sealed partial class PrivacyPolicyViewModel : ViewModelBase
+{
+    private readonly LocalizationService _localizationService = new();
+    private readonly string _languageCode;
+
+    [ObservableProperty]
+    private string _title = string.Empty;
+
+    [ObservableProperty]
+    private string _description = string.Empty;
+
+    [ObservableProperty]
+    private string _loadingText = string.Empty;
+
+    [ObservableProperty]
+    private string _errorText = string.Empty;
+
+    [ObservableProperty]
+    private string _markdownContent = string.Empty;
+
+    [ObservableProperty]
+    private bool _isLoading = true;
+
+    [ObservableProperty]
+    private bool _hasError;
+
+    [ObservableProperty]
+    private bool _hasContent;
+
+    public PrivacyPolicyViewModel()
+    {
+        _languageCode = "zh-CN";
+        RefreshLocalizedText();
+        LoadPrivacyPolicy();
+    }
+
+    private void RefreshLocalizedText()
+    {
+        Title = L("settings.privacy.policy_title", "Privacy Policy");
+        Description = L("settings.privacy.policy_description", "Learn how we collect, use, and protect your data.");
+        LoadingText = L("settings.privacy.policy_loading", "Loading privacy policy...");
+    }
+
+    private async void LoadPrivacyPolicy()
+    {
+        try
+        {
+            IsLoading = true;
+            HasError = false;
+            HasContent = false;
+
+            // 从嵌入资源加载隐私政策Markdown文件
+            var assembly = Assembly.GetExecutingAssembly();
+            var resourceName = "LanMountainDesktop.Assets.Documents.Privacy.md";
+
+            using var stream = assembly.GetManifestResourceStream(resourceName);
+            if (stream is null)
+            {
+                throw new FileNotFoundException($"Privacy policy resource not found: {resourceName}");
+            }
+
+            using var reader = new StreamReader(stream);
+            var markdown = await reader.ReadToEndAsync();
+
+            MarkdownContent = markdown;
+            IsLoading = false;
+            HasContent = true;
+
+            AppLogger.Info("PrivacyPolicy", "Privacy policy loaded successfully.");
+        }
+        catch (Exception ex)
+        {
+            AppLogger.Warn("PrivacyPolicy", "Failed to load privacy policy.", ex);
+            IsLoading = false;
+            HasError = true;
+            ErrorText = L("settings.privacy.policy_error", "Failed to load privacy policy. Please try again later.");
+        }
+    }
+
+    private string L(string key, string fallback)
+        => _localizationService.GetString(_languageCode, key, fallback);
+}

LanMountainDesktop/ViewModels/PrivacySettingsPageViewModel.cs

@@ -15,6 +15,8 @@ public sealed partial class PrivacySettingsPageViewModel : ViewModelBase
     private readonly string _languageCode;
     private bool _isInitializing;
 
+    public event Action? ViewPrivacyPolicyRequested;
+
     public PrivacySettingsPageViewModel(ISettingsFacadeService settingsFacade)
     {
         _settingsFacade = settingsFacade;
@@ -59,6 +61,12 @@ public sealed partial class PrivacySettingsPageViewModel : ViewModelBase
     [ObservableProperty]
     private string _refreshDeviceIdText = string.Empty;
 
+    [ObservableProperty]
+    private string _viewPrivacyPolicyText = string.Empty;
+
+    [ObservableProperty]
+    private string _privacyPolicyHintPrefix = string.Empty;
+
     public void Load()
     {
         var state = _settingsFacade.Privacy.Get();
@@ -130,6 +138,25 @@ public sealed partial class PrivacySettingsPageViewModel : ViewModelBase
         DeviceIdHeader = L("settings.privacy.device_id_title", "Device ID");
         DeviceIdDescription = L("settings.privacy.device_id_description", "Unique identifier for this device. Click refresh to regenerate.");
         RefreshDeviceIdText = L("settings.privacy.refresh_device_id", "Refresh");
+        PrivacyPolicyHintPrefix = L("settings.privacy.policy_hint_prefix", "For more details, please ");
+        ViewPrivacyPolicyText = L("settings.privacy.view_policy", "view our privacy policy");
+    }
+
+    [RelayCommand]
+    private void ViewPrivacyPolicy()
+    {
+        try
+        {
+            // 触发隐私政策查看事件
+            AppLogger.Info("PrivacySettings", "User requested to view privacy policy.");
+            
+            // 发送事件通知显示隐私政策
+            ViewPrivacyPolicyRequested?.Invoke();
+        }
+        catch (Exception ex)
+        {
+            AppLogger.Warn("PrivacySettings", "Failed to view privacy policy.", ex);
+        }
     }
 
     private string L(string key, string fallback)

LanMountainDesktop/ViewModels/SettingsViewModels.cs

@@ -268,12 +268,17 @@ public sealed partial class GeneralSettingsPageViewModel : ViewModelBase
 
     partial void OnSelectedLanguageChanged(SelectionOption value)
     {
-        RefreshPreview();
         if (_isInitializing || value is null)
         {
             return;
         }
 
+        // 更新语言代码并刷新UI文本
+        _languageCode = _localizationService.NormalizeLanguageCode(value.Value);
+        RefreshLocalizedText();
+        RefreshPreview();
+        
+        // 保存设置
         _settingsFacade.Region.Save(new RegionSettingsState(
             value.Value,
             NormalizeTimeZoneId(SelectedTimeZone?.Id)));
@@ -1329,9 +1334,6 @@ public sealed partial class UpdateSettingsPageViewModel : ViewModelBase
         LoadStateFromSettings();
     }
 
-    [ObservableProperty]
-    private bool _autoCheckUpdates;
-
     [ObservableProperty]
     private string _selectedUpdateChannelValue = UpdateSettingsValues.ChannelStable;
 
@@ -1380,9 +1382,6 @@ public sealed partial class UpdateSettingsPageViewModel : ViewModelBase
     [ObservableProperty]
     private string _preferencesDescription = string.Empty;
 
-    [ObservableProperty]
-    private string _autoCheckUpdatesLabel = string.Empty;
-
     [ObservableProperty]
     private string _updateChannelLabel = string.Empty;
 
@@ -1520,16 +1519,6 @@ public sealed partial class UpdateSettingsPageViewModel : ViewModelBase
 
     private bool IsBusy => IsCheckingForUpdates || IsDownloading;
 
-    partial void OnAutoCheckUpdatesChanged(bool value)
-    {
-        if (_isInitializing)
-        {
-            return;
-        }
-
-        SaveUpdateSettings();
-    }
-
     partial void OnSelectedUpdateChannelOptionChanged(SelectionOption? value)
     {
         if (value is not null &&
@@ -1729,7 +1718,6 @@ public sealed partial class UpdateSettingsPageViewModel : ViewModelBase
         var current = _settingsFacade.Update.Get();
         _settingsFacade.Update.Save(current with
         {
-            AutoCheckUpdates = AutoCheckUpdates,
             IncludePrereleaseUpdates = string.Equals(
                 SelectedUpdateChannelValue,
                 UpdateSettingsValues.ChannelPreview,
@@ -1841,7 +1829,6 @@ public sealed partial class UpdateSettingsPageViewModel : ViewModelBase
         StatusCardDescription = L("settings.update.status_card_description", "Check for updates and review the latest release information.");
         PreferencesHeader = L("settings.update.preferences_header", "Update Preferences");
         PreferencesDescription = L("settings.update.preferences_description", "Choose your release channel, download source, behavior, and download speed.");
-        AutoCheckUpdatesLabel = L("settings.update.auto_check_toggle", "Automatically check for updates on startup");
         UpdateChannelLabel = L("settings.update.channel_label", "Update Channel");
         UpdateSourceLabel = L("settings.update.source_label", "Download Source");
         UpdateModeLabel = L("settings.update.mode_label", "Update Mode");
@@ -1870,7 +1857,6 @@ public sealed partial class UpdateSettingsPageViewModel : ViewModelBase
     {
         var update = _settingsFacade.Update.Get();
         _isInitializing = true;
-        AutoCheckUpdates = update.AutoCheckUpdates;
         SelectedUpdateChannelValue = UpdateSettingsValues.NormalizeChannel(update.UpdateChannel, update.IncludePrereleaseUpdates);
         SelectedUpdateSourceValue = UpdateSettingsValues.NormalizeDownloadSource(update.UpdateDownloadSource);
         SelectedUpdateModeValue = UpdateSettingsValues.NormalizeMode(update.UpdateMode);

LanMountainDesktop/ViewModels/StatusBarSettingsPageViewModel.cs

@@ -39,6 +39,9 @@ public sealed partial class StatusBarSettingsPageViewModel : ViewModelBase
     [ObservableProperty]
     private SelectionOption _selectedClockFormat = new("HourMinuteSecond", "Hour:Minute:Second");
 
+    [ObservableProperty]
+    private bool _clockTransparentBackground;
+
     [ObservableProperty]
     private SelectionOption _selectedSpacingMode = new("Relaxed", "Relaxed");
 
@@ -66,6 +69,12 @@ public sealed partial class StatusBarSettingsPageViewModel : ViewModelBase
     [ObservableProperty]
     private string _clockFormatLabel = string.Empty;
 
+    [ObservableProperty]
+    private string _clockTransparentBackgroundLabel = string.Empty;
+
+    [ObservableProperty]
+    private string _clockTransparentBackgroundDescription = string.Empty;
+
     [ObservableProperty]
     private string _spacingHeader = string.Empty;
 
@@ -88,6 +97,7 @@ public sealed partial class StatusBarSettingsPageViewModel : ViewModelBase
         SelectedClockFormat = ClockFormats.FirstOrDefault(option =>
             string.Equals(option.Value, clockFormat, StringComparison.OrdinalIgnoreCase))
             ?? ClockFormats[1];
+        ClockTransparentBackground = state.ClockTransparentBackground;
 
         var spacingMode = NormalizeSpacingMode(state.SpacingMode);
         SelectedSpacingMode = SpacingModes.FirstOrDefault(option =>
@@ -117,6 +127,16 @@ public sealed partial class StatusBarSettingsPageViewModel : ViewModelBase
         Save();
     }
 
+    partial void OnClockTransparentBackgroundChanged(bool value)
+    {
+        if (_isInitializing)
+        {
+            return;
+        }
+
+        Save();
+    }
+
     partial void OnSelectedSpacingModeChanged(SelectionOption value)
     {
         IsCustomSpacingVisible = string.Equals(value?.Value, "Custom", StringComparison.OrdinalIgnoreCase);
@@ -163,6 +183,7 @@ public sealed partial class StatusBarSettingsPageViewModel : ViewModelBase
             state.EnableDynamicTaskbarActions,
             state.TaskbarLayoutMode,
             SelectedClockFormat.Value,
+            ClockTransparentBackground,
             NormalizeSpacingMode(SelectedSpacingMode.Value),
             Math.Clamp(CustomSpacingPercent, 0, 30)));
     }
@@ -194,6 +215,8 @@ public sealed partial class StatusBarSettingsPageViewModel : ViewModelBase
         ClockHeader = L("settings.status_bar.clock_header", "Clock Component");
         ClockDescription = L("settings.status_bar.clock_description", "Display a clock on the top status bar.");
         ClockFormatLabel = L("settings.status_bar.clock_format_label", "Clock format");
+        ClockTransparentBackgroundLabel = L("settings.status_bar.clock_transparent_background_label", "Transparent background");
+        ClockTransparentBackgroundDescription = L("settings.status_bar.clock_transparent_background_desc", "Remove the capsule background and keep only the clock text.");
         SpacingHeader = L("settings.status_bar.spacing_header", "Component Spacing");
         SpacingDescription = L("settings.status_bar.spacing_desc", "Adjust spacing between status bar components.");
         CustomSpacingLabel = L("settings.status_bar.spacing_custom_label", "Custom spacing (%)");

LanMountainDesktop/ViewModels/WallpaperSettingsPageViewModel.cs

@@ -82,23 +82,24 @@ public sealed partial class WallpaperSettingsPageViewModel : ViewModelBase
     [ObservableProperty]
     private bool _isImage;
 
-    [ObservableProperty]
-    private bool _isVideo;
-
     [ObservableProperty]
     private Bitmap? _previewImage;
 
     [ObservableProperty]
     private IBrush? _previewBrush;
 
+    // 自定义颜色持久化
     [ObservableProperty]
-    private string _videoModeHintText = string.Empty;
+    private Color _customColor = Colors.White;
+
+    [ObservableProperty]
+    private IBrush _customColorBrush = new SolidColorBrush(Colors.White);
 
     public void Load()
     {
         var wallpaper = _settingsFacade.Wallpaper.Get();
         WallpaperPath = wallpaper.WallpaperPath ?? string.Empty;
-        
+
         SelectedWallpaperType = WallpaperTypes.FirstOrDefault(t => t.Value == wallpaper.Type) ?? WallpaperTypes[0];
         SelectedColor = wallpaper.Color ?? PresetColors[0];
 
@@ -108,7 +109,14 @@ public sealed partial class WallpaperSettingsPageViewModel : ViewModelBase
         SelectedWallpaperPlacement = WallpaperPlacements.FirstOrDefault(option =>
             string.Equals(option.Value, wallpaperPlacement, StringComparison.OrdinalIgnoreCase))
             ?? WallpaperPlacements[0];
-        
+
+        // 加载自定义颜色
+        if (!string.IsNullOrWhiteSpace(wallpaper.CustomColor) && Color.TryParse(wallpaper.CustomColor, out var customColor))
+        {
+            CustomColor = customColor;
+            CustomColorBrush = new SolidColorBrush(customColor);
+        }
+
         UpdateVisibility();
         UpdatePreviewFromCurrentSelection();
     }
@@ -124,8 +132,7 @@ public sealed partial class WallpaperSettingsPageViewModel : ViewModelBase
     private void UpdateVisibility()
     {
         IsImage = SelectedWallpaperType?.Value == "Image";
-        IsVideo = SelectedWallpaperType?.Value == "Video";
-        IsImageOrVideo = SelectedWallpaperType?.Value is "Image" or "Video";
+        IsImageOrVideo = IsImage;
         IsSolidColor = SelectedWallpaperType?.Value == "SolidColor";
     }
 
@@ -135,6 +142,16 @@ public sealed partial class WallpaperSettingsPageViewModel : ViewModelBase
         SaveWallpaper();
     }
 
+    partial void OnCustomColorChanged(Color value)
+    {
+        CustomColorBrush = new SolidColorBrush(value);
+        // 将自定义颜色应用到壁纸
+        var colorHex = $"#{value.A:X2}{value.R:X2}{value.G:X2}{value.B:X2}";
+        SelectedColor = colorHex;
+        if (_isInitializing) return;
+        SaveWallpaper();
+    }
+
     public async Task ImportWallpaperAsync(string sourcePath)
     {
         var importedPath = await _settingsFacade.WallpaperMedia.ImportAssetAsync(sourcePath);
@@ -222,11 +239,13 @@ public sealed partial class WallpaperSettingsPageViewModel : ViewModelBase
         var normalizedPath = SelectedWallpaperType?.Value == "SolidColor" || string.IsNullOrWhiteSpace(WallpaperPath)
             ? null
             : WallpaperPath;
+        var customColorHex = $"#{CustomColor.A:X2}{CustomColor.R:X2}{CustomColor.G:X2}{CustomColor.B:X2}";
         _settingsFacade.Wallpaper.Save(new WallpaperSettingsState(
             normalizedPath,
             selectedType,
             SelectedColor,
-            selectedPlacement));
+            selectedPlacement,
+            customColorHex));
     }
 
     private IReadOnlyList<SelectionOption> CreateWallpaperPlacements()
@@ -246,7 +265,6 @@ public sealed partial class WallpaperSettingsPageViewModel : ViewModelBase
         return
         [
             new SelectionOption("Image", L("settings.wallpaper.type.image", "Image")),
-            new SelectionOption("Video", L("settings.wallpaper.type.video", "Video")),
             new SelectionOption("SolidColor", L("settings.wallpaper.type.solid_color", "Solid Color"))
         ];
     }
@@ -257,7 +275,7 @@ public sealed partial class WallpaperSettingsPageViewModel : ViewModelBase
         [
             "#D8A7B1", "#B6C9BB", "#A2B5BB", "#E6E2D3",
             "#B5A397", "#C5C1C0", "#D4BE8D", "#C08261",
-            "#8E9775", "#9FBAD3", "#E5BAA2", "#4E596F"
+            "#8E9775", "#9FBAD3", "#E5BAA2"
         ];
     }
 
@@ -271,7 +289,6 @@ public sealed partial class WallpaperSettingsPageViewModel : ViewModelBase
         WallpaperPlacementDescription = L("settings.wallpaper.placement_desc", "Adjust how the image fills the desktop.");
         ImportWallpaperButtonText = L("settings.wallpaper.pick_button", "Import Wallpaper");
         FilePickerTitle = L("filepicker.title", "Select wallpaper");
-        VideoModeHintText = L("settings.wallpaper.video_mode", "Video wallpaper uses automatic fill mode.");
     }
 
     private string L(string key, string fallback)

LanMountainDesktop/Views/ComponentEditorWindow.axaml.cs

@@ -241,6 +241,7 @@ public partial class ComponentEditorWindow : Window
             "DataLine" => MaterialIconKind.ChartLine,
             "Edit" => MaterialIconKind.Pencil,
             "Calculator" => MaterialIconKind.Calculator,
+            "Storage" => MaterialIconKind.UsbFlashDrive,
             "Globe" => MaterialIconKind.Web,
             "Play" => MaterialIconKind.Play,
             _ => MaterialIconKind.Settings

LanMountainDesktop/Views/ComponentEditors/ClassScheduleComponentEditor.axaml

@@ -22,14 +22,17 @@
             <StackPanel Spacing="12">
                 <TextBlock x:Name="ColorSchemeHeaderTextBlock"
                            Classes="component-editor-section-title" />
-                <StackPanel Spacing="8">
-                    <RadioButton x:Name="FollowSystemRadioButton"
-                                 GroupName="ColorScheme"
-                                 IsCheckedChanged="OnColorSchemeChanged" />
-                    <RadioButton x:Name="UseNativeRadioButton"
-                                 GroupName="ColorScheme"
-                                 IsCheckedChanged="OnColorSchemeChanged" />
-                </StackPanel>
+                <ComboBox x:Name="ColorSchemeComboBox"
+                          Classes="component-editor-select"
+                          HorizontalAlignment="Stretch"
+                          SelectionChanged="OnColorSchemeSelectionChanged">
+                    <ComboBoxItem x:Name="FollowSystemColorSchemeItem"
+                                  Classes="component-editor-select-item"
+                                  Tag="follow_system" />
+                    <ComboBoxItem x:Name="UseNativeColorSchemeItem"
+                                  Classes="component-editor-select-item"
+                                  Tag="native" />
+                </ComboBox>
             </StackPanel>
         </Border>
 

LanMountainDesktop/Views/ComponentEditors/ClassScheduleComponentEditor.axaml.cs

@@ -68,40 +68,37 @@ public partial class ClassScheduleComponentEditor : ComponentEditorViewBase
         var colorSchemeSource = snapshot.ColorSchemeSource;
 
         HeadlineTextBlock.Text = Context?.Definition.DisplayName ?? "Class Schedule";
-        DescriptionTextBlock.Text = L("schedule.settings.desc", "导入 ClassIsland 的 CSES 课表文件并选择启用项。");
-        
-        ColorSchemeHeaderTextBlock.Text = L("component.settings.color_scheme", "配色方案");
-        FollowSystemRadioButton.Content = L("component.color_scheme.follow_system", "跟随系统配色");
-        UseNativeRadioButton.Content = L("component.color_scheme.native", "使用组件自定义配色");
-        
-        AddScheduleButton.Content = L("schedule.settings.add", "添加课表");
-        EmptyStateTextBlock.Text = L("schedule.settings.empty", "暂无导入课表");
+        DescriptionTextBlock.Text = L(
+            "schedule.settings.desc",
+            "Import a ClassIsland CSES schedule file and choose which one to use.");
+
+        ColorSchemeHeaderTextBlock.Text = L("component.settings.color_scheme", "Color Scheme");
+        FollowSystemColorSchemeItem.Content = L("component.color_scheme.follow_system", "Follow system color scheme");
+        UseNativeColorSchemeItem.Content = L("component.color_scheme.native", "Use component custom color scheme");
+
+        AddScheduleButton.Content = L("schedule.settings.add", "Add Schedule");
+        EmptyStateTextBlock.Text = L("schedule.settings.empty", "No imported schedules yet.");
 
         _suppressEvents = true;
-        
-        if (string.IsNullOrEmpty(colorSchemeSource) || 
-            colorSchemeSource == ThemeAppearanceValues.ColorSchemeFollowSystem)
-        {
-            FollowSystemRadioButton.IsChecked = true;
-        }
-        else
-        {
-            UseNativeRadioButton.IsChecked = true;
-        }
-        
+        ColorSchemeComboBox.SelectedItem =
+            string.IsNullOrEmpty(colorSchemeSource) ||
+            string.Equals(colorSchemeSource, ThemeAppearanceValues.ColorSchemeFollowSystem, StringComparison.OrdinalIgnoreCase)
+                ? FollowSystemColorSchemeItem
+                : UseNativeColorSchemeItem;
         _suppressEvents = false;
     }
 
-    private void OnColorSchemeChanged(object? sender, RoutedEventArgs e)
+    private void OnColorSchemeSelectionChanged(object? sender, SelectionChangedEventArgs e)
     {
+        _ = sender;
+        _ = e;
         if (_suppressEvents)
         {
             return;
         }
 
-        var useNative = UseNativeRadioButton.IsChecked == true;
-        var colorSchemeSource = useNative 
-            ? ThemeAppearanceValues.ColorSchemeNative 
+        var colorSchemeSource = ColorSchemeComboBox.SelectedItem is ComboBoxItem item && item.Tag is string tag
+            ? tag
             : ThemeAppearanceValues.ColorSchemeFollowSystem;
 
         var snapshot = LoadSnapshot();
@@ -121,11 +118,11 @@ public partial class ClassScheduleComponentEditor : ComponentEditorViewBase
 
         var files = await storageProvider.OpenFilePickerAsync(new FilePickerOpenOptions
         {
-            Title = L("schedule.settings.picker_title", "选择 ClassIsland 课表文件"),
+            Title = L("schedule.settings.picker_title", "Choose ClassIsland schedule file"),
             AllowMultiple = false,
             FileTypeFilter =
             [
-                new FilePickerFileType(L("schedule.settings.picker_file_type", "ClassIsland CSES 课表"))
+                new FilePickerFileType(L("schedule.settings.picker_file_type", "ClassIsland CSES Schedule"))
                 {
                     Patterns = ["*.cses", "*.yaml", "*.yml"]
                 }
@@ -155,7 +152,7 @@ public partial class ClassScheduleComponentEditor : ComponentEditorViewBase
             {
                 Id = Guid.NewGuid().ToString("N"),
                 DisplayName = Path.GetFileNameWithoutExtension(importedPath)?.Trim()
-                    ?? L("schedule.settings.unnamed", "未命名课表"),
+                    ?? L("schedule.settings.unnamed", "Untitled Schedule"),
                 FilePath = importedPath
             });
             _activeScheduleId = _importedSchedules[^1].Id;
@@ -219,7 +216,7 @@ public partial class ClassScheduleComponentEditor : ComponentEditorViewBase
             var title = new TextBlock
             {
                 Text = string.IsNullOrWhiteSpace(item.DisplayName)
-                    ? L("schedule.settings.unnamed", "未命名课表")
+                    ? L("schedule.settings.unnamed", "Untitled Schedule")
                     : item.DisplayName,
                 FontWeight = FontWeight.SemiBold
             };
@@ -234,7 +231,7 @@ public partial class ClassScheduleComponentEditor : ComponentEditorViewBase
 
             var deleteButton = new Button
             {
-                Content = L("schedule.settings.delete", "删除"),
+                Content = L("schedule.settings.delete", "Delete"),
                 Tag = item.Id,
                 Padding = new Thickness(12, 8),
                 HorizontalAlignment = HorizontalAlignment.Right

LanMountainDesktop/Views/ComponentEditors/OfficeRecentDocumentsComponentEditor.axaml

@@ -0,0 +1,42 @@
+<UserControl xmlns="https://github.com/avaloniaui"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+             mc:Ignorable="d"
+             x:Class="LanMountainDesktop.Views.ComponentEditors.OfficeRecentDocumentsComponentEditor">
+    <StackPanel Spacing="16">
+        <Border Classes="component-editor-hero-card"
+                Padding="24">
+            <StackPanel Spacing="8">
+                <TextBlock x:Name="HeadlineTextBlock"
+                           Classes="component-editor-headline"
+                           TextWrapping="Wrap" />
+                <TextBlock x:Name="DescriptionTextBlock"
+                           Classes="component-editor-secondary-text"
+                           TextWrapping="Wrap" />
+            </StackPanel>
+        </Border>
+
+        <Border Classes="component-editor-card"
+                Padding="20">
+            <StackPanel Spacing="12">
+                <TextBlock x:Name="SourcesHeaderTextBlock"
+                           Classes="component-editor-section-title" />
+                <TextBlock x:Name="SourcesDescriptionTextBlock"
+                           Classes="component-editor-secondary-text"
+                           TextWrapping="Wrap" />
+                <CheckBox x:Name="RegistryCheckBox"
+                          IsCheckedChanged="OnSourceSelectionChanged" />
+                <CheckBox x:Name="RecentFoldersCheckBox"
+                          IsCheckedChanged="OnSourceSelectionChanged" />
+                <CheckBox x:Name="JumpListsCheckBox"
+                          IsCheckedChanged="OnSourceSelectionChanged" />
+            </StackPanel>
+        </Border>
+
+        <TextBlock x:Name="HintTextBlock"
+                   Classes="component-editor-secondary-text"
+                   Margin="12,0"
+                   TextWrapping="Wrap" />
+    </StackPanel>
+</UserControl>

LanMountainDesktop/Views/ComponentEditors/OfficeRecentDocumentsComponentEditor.axaml.cs

@@ -0,0 +1,87 @@
+using System;
+using System.Linq;
+using Avalonia.Interactivity;
+using LanMountainDesktop.ComponentSystem;
+using LanMountainDesktop.Models;
+
+namespace LanMountainDesktop.Views.ComponentEditors;
+
+public partial class OfficeRecentDocumentsComponentEditor : ComponentEditorViewBase
+{
+    private bool _suppressEvents;
+
+    public OfficeRecentDocumentsComponentEditor()
+        : this(null)
+    {
+    }
+
+    public OfficeRecentDocumentsComponentEditor(DesktopComponentEditorContext? context)
+        : base(context)
+    {
+        InitializeComponent();
+        ApplyState();
+    }
+
+    private void ApplyState()
+    {
+        var snapshot = LoadSnapshot();
+        var enabledSources = OfficeRecentDocumentSourceTypes.NormalizeValues(
+            snapshot.OfficeRecentDocumentsEnabledSources,
+            useDefaultWhenEmpty: snapshot.OfficeRecentDocumentsEnabledSources is null);
+
+        HeadlineTextBlock.Text = Context?.Definition.DisplayName ?? L(
+            "component.office_recent_documents",
+            "Recent Documents");
+        DescriptionTextBlock.Text = L(
+            "office_recent_documents.settings.desc",
+            "Choose which Windows and Office sources this widget should scan for recent documents.");
+        SourcesHeaderTextBlock.Text = L(
+            "office_recent_documents.settings.sources_title",
+            "Recent document sources");
+        SourcesDescriptionTextBlock.Text = L(
+            "office_recent_documents.settings.sources_desc",
+            "You can combine multiple sources. Registry selection also keeps the Office interop MRU fallback available.");
+        RegistryCheckBox.Content = L(
+            "office_recent_documents.settings.source.registry",
+            "Office registry MRU");
+        RecentFoldersCheckBox.Content = L(
+            "office_recent_documents.settings.source.recent_folders",
+            "Windows Recent folders");
+        JumpListsCheckBox.Content = L(
+            "office_recent_documents.settings.source.jump_lists",
+            "Windows Jump Lists");
+        HintTextBlock.Text = L(
+            "office_recent_documents.settings.hint",
+            "If you disable all sources, this widget will stay empty until at least one source is enabled again.");
+
+        _suppressEvents = true;
+        RegistryCheckBox.IsChecked = enabledSources.Contains(OfficeRecentDocumentSourceTypes.Registry, StringComparer.OrdinalIgnoreCase);
+        RecentFoldersCheckBox.IsChecked = enabledSources.Contains(OfficeRecentDocumentSourceTypes.RecentFolders, StringComparer.OrdinalIgnoreCase);
+        JumpListsCheckBox.IsChecked = enabledSources.Contains(OfficeRecentDocumentSourceTypes.JumpLists, StringComparer.OrdinalIgnoreCase);
+        _suppressEvents = false;
+    }
+
+    private void OnSourceSelectionChanged(object? sender, RoutedEventArgs e)
+    {
+        _ = sender;
+        _ = e;
+        if (_suppressEvents)
+        {
+            return;
+        }
+
+        var selectedSources = new[]
+        {
+            RegistryCheckBox.IsChecked == true ? OfficeRecentDocumentSourceTypes.Registry : null,
+            RecentFoldersCheckBox.IsChecked == true ? OfficeRecentDocumentSourceTypes.RecentFolders : null,
+            JumpListsCheckBox.IsChecked == true ? OfficeRecentDocumentSourceTypes.JumpLists : null
+        }
+        .Where(static value => !string.IsNullOrWhiteSpace(value))
+        .Cast<string>()
+        .ToList();
+
+        var snapshot = LoadSnapshot();
+        snapshot.OfficeRecentDocumentsEnabledSources = selectedSources;
+        SaveSnapshot(snapshot, nameof(ComponentSettingsSnapshot.OfficeRecentDocumentsEnabledSources));
+    }
+}

LanMountainDesktop/Views/ComponentEditors/RemovableStorageComponentEditor.axaml

@@ -0,0 +1,50 @@
+<UserControl xmlns="https://github.com/avaloniaui"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+             mc:Ignorable="d"
+             x:Class="LanMountainDesktop.Views.ComponentEditors.RemovableStorageComponentEditor">
+    <StackPanel Spacing="16">
+        <Border Classes="component-editor-hero-card"
+                Padding="24">
+            <StackPanel Spacing="8">
+                <TextBlock x:Name="HeadlineTextBlock"
+                           Classes="component-editor-headline"
+                           TextWrapping="Wrap" />
+                <TextBlock x:Name="DescriptionTextBlock"
+                           Classes="component-editor-secondary-text"
+                           TextWrapping="Wrap" />
+            </StackPanel>
+        </Border>
+
+        <Border Classes="component-editor-card"
+                Padding="20">
+            <StackPanel Spacing="12">
+                <TextBlock x:Name="ColorSchemeHeaderTextBlock"
+                           Classes="component-editor-section-title" />
+                <ComboBox x:Name="ColorSchemeComboBox"
+                          Classes="component-editor-select"
+                          HorizontalAlignment="Stretch"
+                          SelectionChanged="OnColorSchemeSelectionChanged">
+                    <ComboBoxItem x:Name="FollowSystemColorSchemeItem"
+                                  Classes="component-editor-select-item"
+                                  Tag="follow_system" />
+                    <ComboBoxItem x:Name="UseNativeColorSchemeItem"
+                                  Classes="component-editor-select-item"
+                                  Tag="native" />
+                </ComboBox>
+            </StackPanel>
+        </Border>
+
+        <Border Classes="component-editor-card"
+                Padding="20">
+            <StackPanel Spacing="10">
+                <TextBlock x:Name="BehaviorHeaderTextBlock"
+                           Classes="component-editor-section-title" />
+                <TextBlock x:Name="BehaviorTextBlock"
+                           Classes="component-editor-secondary-text"
+                           TextWrapping="Wrap" />
+            </StackPanel>
+        </Border>
+    </StackPanel>
+</UserControl>

LanMountainDesktop/Views/ComponentEditors/RemovableStorageComponentEditor.axaml.cs

@@ -0,0 +1,67 @@
+using System;
+using Avalonia.Controls;
+using Avalonia.Interactivity;
+using LanMountainDesktop.ComponentSystem;
+using LanMountainDesktop.Models;
+using LanMountainDesktop.Services;
+
+namespace LanMountainDesktop.Views.ComponentEditors;
+
+public partial class RemovableStorageComponentEditor : ComponentEditorViewBase
+{
+    private bool _suppressEvents;
+
+    public RemovableStorageComponentEditor()
+        : this(null)
+    {
+    }
+
+    public RemovableStorageComponentEditor(DesktopComponentEditorContext? context)
+        : base(context)
+    {
+        InitializeComponent();
+        ApplyState();
+    }
+
+    private void ApplyState()
+    {
+        var snapshot = LoadSnapshot();
+        var colorSchemeSource = snapshot.ColorSchemeSource;
+
+        HeadlineTextBlock.Text = Context?.Definition.DisplayName ?? "Removable Storage";
+        DescriptionTextBlock.Text = L(
+            "removable_storage.settings.desc",
+            "Show a connected USB drive with quick open and eject actions.");
+        ColorSchemeHeaderTextBlock.Text = L("component.settings.color_scheme", "Color Scheme");
+        FollowSystemColorSchemeItem.Content = L("component.color_scheme.follow_system", "Follow system color scheme");
+        UseNativeColorSchemeItem.Content = L("component.color_scheme.native", "Use component custom color scheme");
+        BehaviorHeaderTextBlock.Text = L("removable_storage.settings.behavior_title", "Behavior");
+        BehaviorTextBlock.Text = L(
+            "removable_storage.settings.behavior_desc",
+            "The widget automatically watches for removable drives and switches to the newest inserted USB drive.");
+
+        _suppressEvents = true;
+        ColorSchemeComboBox.SelectedItem =
+            string.IsNullOrWhiteSpace(colorSchemeSource) ||
+            string.Equals(colorSchemeSource, ThemeAppearanceValues.ColorSchemeFollowSystem, StringComparison.OrdinalIgnoreCase)
+                ? FollowSystemColorSchemeItem
+                : UseNativeColorSchemeItem;
+        _suppressEvents = false;
+    }
+
+    private void OnColorSchemeSelectionChanged(object? sender, SelectionChangedEventArgs e)
+    {
+        _ = sender;
+        _ = e;
+        if (_suppressEvents)
+        {
+            return;
+        }
+
+        var snapshot = LoadSnapshot();
+        snapshot.ColorSchemeSource = ColorSchemeComboBox.SelectedItem is ComboBoxItem item && item.Tag is string tag
+            ? tag
+            : ThemeAppearanceValues.ColorSchemeFollowSystem;
+        SaveSnapshot(snapshot, nameof(ComponentSettingsSnapshot.ColorSchemeSource));
+    }
+}

LanMountainDesktop/Views/ComponentEditors/StudyEnvironmentComponentEditor.axaml

@@ -6,7 +6,7 @@
              mc:Ignorable="d"
              x:Class="LanMountainDesktop.Views.ComponentEditors.StudyEnvironmentComponentEditor">
     <StackPanel Spacing="16">
-        <Border Classes="component-editor-hero_card"
+        <Border Classes="component-editor-hero-card"
                 Padding="24">
             <StackPanel Spacing="8">
                 <TextBlock x:Name="HeadlineTextBlock"
@@ -23,14 +23,17 @@
             <StackPanel Spacing="12">
                 <TextBlock x:Name="ColorSchemeHeaderTextBlock"
                            Classes="component-editor-section-title" />
-                <StackPanel Spacing="8">
-                    <RadioButton x:Name="FollowSystemRadioButton"
-                                 GroupName="ColorScheme"
-                                 IsCheckedChanged="OnColorSchemeChanged" />
-                    <RadioButton x:Name="UseNativeRadioButton"
-                                 GroupName="ColorScheme"
-                                 IsCheckedChanged="OnColorSchemeChanged" />
-                </StackPanel>
+                <ComboBox x:Name="ColorSchemeComboBox"
+                          Classes="component-editor-select"
+                          HorizontalAlignment="Stretch"
+                          SelectionChanged="OnColorSchemeSelectionChanged">
+                    <ComboBoxItem x:Name="FollowSystemColorSchemeItem"
+                                  Classes="component-editor-select-item"
+                                  Tag="follow_system" />
+                    <ComboBoxItem x:Name="UseNativeColorSchemeItem"
+                                  Classes="component-editor-select-item"
+                                  Tag="native" />
+                </ComboBox>
             </StackPanel>
         </Border>
 
@@ -44,7 +47,7 @@
             </StackPanel>
         </Border>
 
-        <Border Classes="component-editor_card"
+        <Border Classes="component-editor-card"
                 Padding="20">
             <StackPanel Spacing="12">
                 <TextBlock x:Name="DbfsHeaderTextBlock"

LanMountainDesktop/Views/ComponentEditors/StudyEnvironmentComponentEditor.axaml.cs

@@ -1,3 +1,5 @@
+using System;
+using Avalonia.Controls;
 using Avalonia.Interactivity;
 using LanMountainDesktop.ComponentSystem;
 using LanMountainDesktop.Models;
@@ -34,43 +36,40 @@ public partial class StudyEnvironmentComponentEditor : ComponentEditorViewBase
         }
 
         HeadlineTextBlock.Text = Context?.Definition.DisplayName ?? "Study Environment";
-        DescriptionTextBlock.Text = L("study.environment.settings.desc", "配置右侧实时噪音值显示内容。");
-        
-        ColorSchemeHeaderTextBlock.Text = L("component.settings.color_scheme", "配色方案");
-        FollowSystemRadioButton.Content = L("component.color_scheme.follow_system", "跟随系统配色");
-        UseNativeRadioButton.Content = L("component.color_scheme.native", "使用组件自定义配色");
-        
-        DisplayDbToggleSwitch.Content = L("study.environment.settings.show_display_db", "显示 display dB");
-        DbfsToggleSwitch.Content = L("study.environment.settings.show_dbfs", "显示 dBFS");
-        HintTextBlock.Text = L("study.environment.settings.hint", "至少启用一种显示方式。");
+        DescriptionTextBlock.Text = L(
+            "study.environment.settings.desc",
+            "Configure the realtime audio level information shown on the right side.");
+
+        ColorSchemeHeaderTextBlock.Text = L("component.settings.color_scheme", "Color Scheme");
+        FollowSystemColorSchemeItem.Content = L("component.color_scheme.follow_system", "Follow system color scheme");
+        UseNativeColorSchemeItem.Content = L("component.color_scheme.native", "Use component custom color scheme");
+
+        DisplayDbToggleSwitch.Content = L("study.environment.settings.show_display_db", "Show display dB");
+        DbfsToggleSwitch.Content = L("study.environment.settings.show_dbfs", "Show dBFS");
+        HintTextBlock.Text = L("study.environment.settings.hint", "At least one display mode must stay enabled.");
 
         _suppressEvents = true;
-        
-        if (string.IsNullOrEmpty(colorSchemeSource) || 
-            colorSchemeSource == ThemeAppearanceValues.ColorSchemeFollowSystem)
-        {
-            FollowSystemRadioButton.IsChecked = true;
-        }
-        else
-        {
-            UseNativeRadioButton.IsChecked = true;
-        }
-        
+        ColorSchemeComboBox.SelectedItem =
+            string.IsNullOrEmpty(colorSchemeSource) ||
+            string.Equals(colorSchemeSource, ThemeAppearanceValues.ColorSchemeFollowSystem, StringComparison.OrdinalIgnoreCase)
+                ? FollowSystemColorSchemeItem
+                : UseNativeColorSchemeItem;
         DisplayDbToggleSwitch.IsChecked = showDisplayDb;
         DbfsToggleSwitch.IsChecked = showDbfs;
         _suppressEvents = false;
     }
 
-    private void OnColorSchemeChanged(object? sender, RoutedEventArgs e)
+    private void OnColorSchemeSelectionChanged(object? sender, SelectionChangedEventArgs e)
     {
+        _ = sender;
+        _ = e;
         if (_suppressEvents)
         {
             return;
         }
 
-        var useNative = UseNativeRadioButton.IsChecked == true;
-        var colorSchemeSource = useNative 
-            ? ThemeAppearanceValues.ColorSchemeNative 
+        var colorSchemeSource = ColorSchemeComboBox.SelectedItem is ComboBoxItem item && item.Tag is string tag
+            ? tag
             : ThemeAppearanceValues.ColorSchemeFollowSystem;
 
         var snapshot = LoadSnapshot();

LanMountainDesktop/Views/ComponentEditors/WhiteboardComponentEditor.axaml

@@ -0,0 +1,40 @@
+<UserControl xmlns="https://github.com/avaloniaui"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+             mc:Ignorable="d"
+             x:Class="LanMountainDesktop.Views.ComponentEditors.WhiteboardComponentEditor">
+    <StackPanel Spacing="16">
+        <Border Classes="component-editor-hero-card"
+                Padding="24">
+            <StackPanel Spacing="8">
+                <TextBlock x:Name="HeadlineTextBlock"
+                           Classes="component-editor-headline"
+                           TextWrapping="Wrap" />
+                <TextBlock x:Name="DescriptionTextBlock"
+                           Classes="component-editor-secondary-text"
+                           TextWrapping="Wrap" />
+            </StackPanel>
+        </Border>
+
+        <Border Classes="component-editor-card"
+                Padding="20">
+            <StackPanel Spacing="12">
+                <TextBlock x:Name="RetentionHeaderTextBlock"
+                           Classes="component-editor-section-title" />
+                <TextBlock x:Name="RetentionDescriptionTextBlock"
+                           Classes="component-editor-secondary-text"
+                           TextWrapping="Wrap" />
+                <ComboBox x:Name="RetentionComboBox"
+                          Classes="component-editor-select"
+                          HorizontalAlignment="Stretch"
+                          SelectionChanged="OnRetentionSelectionChanged" />
+            </StackPanel>
+        </Border>
+
+        <TextBlock x:Name="InstanceHintTextBlock"
+                   Classes="component-editor-secondary-text"
+                   Margin="12,0"
+                   TextWrapping="Wrap" />
+    </StackPanel>
+</UserControl>

LanMountainDesktop/Views/ComponentEditors/WhiteboardComponentEditor.axaml.cs

@@ -0,0 +1,106 @@
+using System;
+using System.Linq;
+using Avalonia.Controls;
+using Avalonia.Interactivity;
+using LanMountainDesktop.ComponentSystem;
+using LanMountainDesktop.Models;
+
+namespace LanMountainDesktop.Views.ComponentEditors;
+
+public partial class WhiteboardComponentEditor : ComponentEditorViewBase
+{
+    private bool _suppressEvents;
+
+    public WhiteboardComponentEditor()
+        : this(null)
+    {
+    }
+
+    public WhiteboardComponentEditor(DesktopComponentEditorContext? context)
+        : base(context)
+    {
+        InitializeComponent();
+        BuildRetentionOptions();
+        ApplyState();
+    }
+
+    private void BuildRetentionOptions()
+    {
+        RetentionComboBox.Items.Clear();
+        for (var days = WhiteboardNoteRetentionPolicy.MinimumDays; days <= WhiteboardNoteRetentionPolicy.MaximumDays; days++)
+        {
+            var item = new ComboBoxItem
+            {
+                Tag = days.ToString(),
+                Content = L(
+                    "whiteboard.settings.retention.option",
+                    "{0} days").Replace("{0}", days.ToString())
+            };
+            item.Classes.Add("component-editor-select-item");
+            RetentionComboBox.Items.Add(item);
+        }
+    }
+
+    private void ApplyState()
+    {
+        var snapshot = LoadSnapshot();
+        var retentionDays = NormalizeRetentionDays(snapshot.WhiteboardNoteRetentionDays);
+
+        HeadlineTextBlock.Text = Context?.Definition.DisplayName ?? "Blackboard";
+        DescriptionTextBlock.Text = L(
+            "whiteboard.settings.desc",
+            "Each blackboard keeps its own note history and saves it independently.");
+        RetentionHeaderTextBlock.Text = L(
+            "whiteboard.settings.retention.title",
+            "Note retention");
+        RetentionDescriptionTextBlock.Text = L(
+            "whiteboard.settings.retention.desc",
+            "Choose how long this blackboard should keep saved notes before expired data is removed automatically.");
+        InstanceHintTextBlock.Text = L(
+            "whiteboard.settings.instance_scope",
+            "This retention setting is stored per blackboard component instance.");
+
+        _suppressEvents = true;
+        RetentionComboBox.SelectedItem = RetentionComboBox.Items
+            .OfType<ComboBoxItem>()
+            .FirstOrDefault(item =>
+                item.Tag is string tag &&
+                int.TryParse(tag, out var days) &&
+                days == retentionDays);
+        _suppressEvents = false;
+    }
+
+    private void OnRetentionSelectionChanged(object? sender, SelectionChangedEventArgs e)
+    {
+        _ = sender;
+        _ = e;
+        if (_suppressEvents)
+        {
+            return;
+        }
+
+        var snapshot = LoadSnapshot();
+        snapshot.WhiteboardNoteRetentionDays = GetSelectedRetentionDays();
+        SaveSnapshot(snapshot, nameof(ComponentSettingsSnapshot.WhiteboardNoteRetentionDays));
+    }
+
+    private int GetSelectedRetentionDays()
+    {
+        if (RetentionComboBox.SelectedItem is ComboBoxItem item &&
+            item.Tag is string tag &&
+            int.TryParse(tag, out var days))
+        {
+            return NormalizeRetentionDays(days);
+        }
+
+        return WhiteboardNoteRetentionPolicy.DefaultDays;
+    }
+
+    private static int NormalizeRetentionDays(int days)
+    {
+        return WhiteboardNoteRetentionPolicy.NormalizeDays(
+            days <= 0
+                ? WhiteboardNoteRetentionPolicy.DefaultDays
+                : days);
+    }
+}

LanMountainDesktop/Views/ComponentLibraryWindow.axaml

@@ -38,7 +38,7 @@
         <Grid Grid.Row="1"
               ColumnDefinitions="240,*"
               ColumnSpacing="12">
-            <Border Classes="glass-panel"
+            <Border Classes="surface-translucent-panel"
                     CornerRadius="24"
                     Padding="10">
                 <ListBox x:Name="CategoryListBox"
@@ -70,7 +70,7 @@
             </Border>
 
             <Border Grid.Column="1"
-                    Classes="glass-strong"
+                    Classes="surface-translucent-strong"
                     CornerRadius="24"
                     Padding="10">
                 <ScrollViewer VerticalScrollBarVisibility="Auto"

LanMountainDesktop/Views/Components/ClassScheduleWidget.axaml

@@ -43,7 +43,7 @@
             <Grid Grid.Row="1">
                 <ScrollViewer x:Name="ContentScrollViewer"
                               HorizontalScrollBarVisibility="Disabled"
-                              VerticalScrollBarVisibility="Disabled">
+                              VerticalScrollBarVisibility="Auto">
                     <StackPanel x:Name="CourseListPanel" />
                 </ScrollViewer>
 

LanMountainDesktop/Views/Components/ClassScheduleWidget.axaml.cs

@@ -198,12 +198,32 @@ public partial class ClassScheduleWidget : UserControl, IDesktopComponentWidget,
             return;
         }
 
-        if (courseIndex < CourseListPanel.Children.Count)
+        // 确保在UI线程执行
+        Avalonia.Threading.Dispatcher.UIThread.Post(() =>
         {
+            if (courseIndex >= CourseListPanel.Children.Count)
+            {
+                return;
+            }
+
             var targetChild = CourseListPanel.Children[courseIndex];
+            if (targetChild == null || !targetChild.IsArrangeValid)
+            {
+                return;
+            }
+
             var bounds = targetChild.Bounds;
-            ContentScrollViewer.Offset = new Vector(0, bounds.Position.Y);
-        }
+            var scrollViewerHeight = ContentScrollViewer.Bounds.Height;
+            var contentHeight = CourseListPanel.Bounds.Height;
+            
+            // 计算滚动位置，使当前课程居中显示
+            var targetOffset = bounds.Position.Y - (scrollViewerHeight / 2) + (bounds.Height / 2);
+            
+            // 确保不超出边界
+            targetOffset = Math.Max(0, Math.Min(targetOffset, contentHeight - scrollViewerHeight));
+            
+            ContentScrollViewer.Offset = new Vector(0, targetOffset);
+        }, Avalonia.Threading.DispatcherPriority.Loaded);
     }
 
     public void RefreshFromSettings()
@@ -298,6 +318,15 @@ public partial class ClassScheduleWidget : UserControl, IDesktopComponentWidget,
             var currentIndex = FindCurrentCourseIndex();
             _lastCurrentCourseIndex = currentIndex;
             HideStatus();
+            
+            // 初始化时自动跳转到当前课程
+            if (currentIndex >= 0)
+            {
+                Avalonia.Threading.Dispatcher.UIThread.Post(() =>
+                {
+                    ScrollToCurrentCourse(currentIndex);
+                }, Avalonia.Threading.DispatcherPriority.Loaded);
+            }
         }
 
         RenderScheduleItems();
@@ -484,10 +513,9 @@ public partial class ClassScheduleWidget : UserControl, IDesktopComponentWidget,
             : CreateBrush("#FF4D5A");
         var normalBulletBrush = CreateBrush(_isNightVisual ? "#B8BEC9" : "#9AA3B2");
 
-        var visibleItems = _courseItems.Take(maxVisibleItems).ToList();
-        for (var i = 0; i < visibleItems.Count; i++)
+        for (var i = 0; i < _courseItems.Count; i++)
         {
-            var item = visibleItems[i];
+            var item = _courseItems[i];
             var bulletBrush = item.IsCurrent ? currentBrush : normalBulletBrush;
 
             var bullet = new Border

LanMountainDesktop/Views/Components/ClockWidget.axaml

@@ -1,4 +1,4 @@
-<UserControl xmlns="https://github.com/avaloniaui"
+<UserControl xmlns="https://github.com/avaloniaui"
              xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
              xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
              xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
@@ -8,7 +8,7 @@
              x:Class="LanMountainDesktop.Views.Components.ClockWidget">
 
     <Border x:Name="RootBorder"
-            Classes="glass-panel"
+            Classes="surface-translucent-panel"
             Padding="0"
             CornerRadius="24">
         <StackPanel Orientation="Horizontal"

LanMountainDesktop/Views/Components/ClockWidget.axaml.cs

@@ -23,6 +23,8 @@ public partial class ClockWidget : UserControl, IDesktopComponentWidget, ITimeZo
 
     private TimeZoneService? _timeZoneService;
     private ClockDisplayFormat _displayFormat = ClockDisplayFormat.HourMinuteSecond;
+    private bool _transparentBackground;
+    private double _lastAppliedCellSize = 100;
 
     public ClockWidget()
     {
@@ -44,11 +46,32 @@ public partial class ClockWidget : UserControl, IDesktopComponentWidget, ITimeZo
         }
     }
 
+    public bool TransparentBackground
+    {
+        get => _transparentBackground;
+        set
+        {
+            if (_transparentBackground == value)
+            {
+                return;
+            }
+
+            _transparentBackground = value;
+            ApplyChrome();
+            ApplyCellSize(_lastAppliedCellSize);
+        }
+    }
+
     public void SetDisplayFormat(ClockDisplayFormat format)
     {
         DisplayFormat = format;
     }
 
+    public void SetTransparentBackground(bool transparentBackground)
+    {
+        TransparentBackground = transparentBackground;
+    }
+
     public void SetTimeZoneService(TimeZoneService timeZoneService)
     {
         ClearTimeZoneService();
@@ -101,6 +124,8 @@ public partial class ClockWidget : UserControl, IDesktopComponentWidget, ITimeZo
 
     public void ApplyCellSize(double cellSize)
     {
+        _lastAppliedCellSize = cellSize;
+
         // --- Class Island “满盈”风格算法 ---
         
         // 1. 计算组件高度：保持与任务栏核心比例一致 (0.74x)
@@ -129,8 +154,39 @@ public partial class ClockWidget : UserControl, IDesktopComponentWidget, ITimeZo
         {
             panel.Spacing = Math.Clamp(cellSize * 0.06, 2, 8);
         }
-        
+
+        if (_transparentBackground)
+        {
+            RootBorder.MinWidth = 0;
+            RootBorder.Padding = new Thickness(Math.Clamp(cellSize * 0.06, 4, 10), 0);
+            return;
+        }
+
         // 确保清除可能存在的固定 Padding，由代码控制“紧密感”
+        RootBorder.MinWidth = cellSize * 2.2;
         RootBorder.Padding = new Thickness(Math.Clamp(cellSize * 0.15, 12, 24), 0);
     }
+
+    private void ApplyChrome()
+    {
+        if (_transparentBackground)
+        {
+            RootBorder.Classes.Remove("glass-panel");
+            RootBorder.Background = Brushes.Transparent;
+            RootBorder.BorderBrush = Brushes.Transparent;
+            RootBorder.BorderThickness = new Thickness(0);
+            RootBorder.BoxShadow = default;
+            return;
+        }
+
+        if (!RootBorder.Classes.Contains("glass-panel"))
+        {
+            RootBorder.Classes.Add("glass-panel");
+        }
+
+        RootBorder.ClearValue(Border.BackgroundProperty);
+        RootBorder.ClearValue(Border.BorderBrushProperty);
+        RootBorder.ClearValue(Border.BorderThicknessProperty);
+        RootBorder.ClearValue(Border.BoxShadowProperty);
+    }
 }

LanMountainDesktop/Views/Components/DesktopComponentRuntimeRegistry.cs

@@ -444,6 +444,11 @@ public sealed class DesktopComponentRuntimeRegistry
                     "component.office_recent_documents",
                     () => new OfficeRecentDocumentsWidget(),
                     cellSize => Math.Clamp(cellSize * 0.50, 10, 24)),
+                new DesktopComponentRuntimeRegistration(
+                    BuiltInComponentIds.DesktopRemovableStorage,
+                    "component.removable_storage",
+                    () => new RemovableStorageWidget(),
+                    cellSize => Math.Clamp(cellSize * 0.46, 12, 26)),
                 new DesktopComponentRuntimeRegistration(
                     BuiltInComponentIds.HolidayCalendar,
                     "component.holiday_calendar",

LanMountainDesktop/Views/Components/OfficeRecentDocumentsWidget.axaml

@@ -11,7 +11,7 @@
 
     <Border x:Name="RootBorder"
             CornerRadius="34"
-            Background="{DynamicResource CardBackgroundFillColorDefaultBrush}"
+            Background="#2D5A8E"
             ClipToBounds="True"
             BorderThickness="0"
             Padding="0">
@@ -23,15 +23,15 @@
                     VerticalAlignment="Top"
                     Margin="0,-40,-40,0"
                     CornerRadius="70"
-                    Background="{DynamicResource SystemAccentColorLight2Brush}"
-                    Opacity="0.2"
+                    Background="#4A90D9"
+                    Opacity="0.3"
                     IsHitTestVisible="False" />
 
             <Grid RowDefinitions="Auto,*" RowSpacing="8" Margin="16,14,16,14">
                 <Grid Grid.Row="0" ColumnDefinitions="*,Auto">
                     <TextBlock x:Name="HeaderTextBlock"
                                Text="最近文档"
-                               Foreground="{DynamicResource AdaptiveTextPrimaryBrush}"
+                               Foreground="#D8FFFFFF"
                                FontSize="18"
                                FontWeight="SemiBold"
                                VerticalAlignment="Center" />
@@ -48,7 +48,7 @@
                             PointerPressed="OnRefreshPointerPressed">
                         <fi:SymbolIcon Symbol="ArrowSync"
                                        FontSize="14"
-                                       Foreground="{DynamicResource AdaptiveTextSecondaryBrush}" />
+                                       Foreground="#B8FFFFFF" />
                     </Button>
                 </Grid>
 
@@ -68,14 +68,14 @@
                                         Width="130"
                                         Height="90"
                                         CornerRadius="10"
-                                        Background="{DynamicResource AdaptiveGlassPanelBackgroundBrush}"
+                                        Background="#3AFFFFFF"
                                         Padding="10"
                                         Cursor="Hand"
                                         PointerPressed="OnDocumentCardPointerPressed">
                                     <Grid RowDefinitions="Auto,*,Auto">
                                         <TextBlock Grid.Row="0"
                                                    Text="{Binding FileName}"
-                                                   Foreground="{DynamicResource AdaptiveTextPrimaryBrush}"
+                                                   Foreground="#D8FFFFFF"
                                                    FontSize="12"
                                                    FontWeight="Medium"
                                                    TextTrimming="CharacterEllipsis"
@@ -84,7 +84,7 @@
                                                    VerticalAlignment="Top" />
                                         <TextBlock Grid.Row="2"
                                                    Text="{Binding TimeAgo}"
-                                                   Foreground="{DynamicResource AdaptiveTextTertiaryBrush}"
+                                                   Foreground="#9AFFFFFF"
                                                    FontSize="10"
                                                    TextTrimming="CharacterEllipsis"
                                                    MaxLines="1" />
@@ -99,7 +99,7 @@
             <TextBlock x:Name="StatusTextBlock"
                        IsVisible="False"
                        Text="暂无最近文档"
-                       Foreground="{DynamicResource AdaptiveTextTertiaryBrush}"
+                       Foreground="#9AFFFFFF"
                        FontSize="14"
                        HorizontalAlignment="Center"
                        VerticalAlignment="Center" />

LanMountainDesktop/Views/Components/OfficeRecentDocumentsWidget.axaml.cs

@@ -1,17 +1,23 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using System.Threading.Tasks;
 using Avalonia.Controls;
 using Avalonia.Input;
+using LanMountainDesktop.ComponentSystem;
+using LanMountainDesktop.Models;
 using LanMountainDesktop.Services;
-using LanMountainDesktop.Views.Components;
 
 namespace LanMountainDesktop.Views.Components;
 
-public partial class OfficeRecentDocumentsWidget : UserControl, IDesktopComponentWidget, IDesktopPageVisibilityAwareComponentWidget
+public partial class OfficeRecentDocumentsWidget : UserControl, IDesktopComponentWidget, IDesktopPageVisibilityAwareComponentWidget, IComponentPlacementContextAware
 {
     private readonly IOfficeRecentDocumentsService _recentDocumentsService;
+    private readonly IComponentInstanceSettingsStore _componentSettingsStore = HostComponentSettingsStoreProvider.GetOrCreate();
     private List<OfficeRecentDocument> _documents = new();
+    private string _componentId = BuiltInComponentIds.DesktopOfficeRecentDocuments;
+    private string _placementId = string.Empty;
+    private IReadOnlyList<string> _enabledSources = OfficeRecentDocumentSourceTypes.DefaultValues;
     private bool _isOnActivePage;
     private bool _isEditMode;
     private bool _isLoading;
@@ -20,6 +26,7 @@ public partial class OfficeRecentDocumentsWidget : UserControl, IDesktopComponen
     {
         InitializeComponent();
         _recentDocumentsService = new OfficeRecentDocumentsService();
+        ReloadSettings();
     }
 
     public void ApplyCellSize(double cellSize)
@@ -44,27 +51,45 @@ public partial class OfficeRecentDocumentsWidget : UserControl, IDesktopComponen
         }
     }
 
-    private void LoadDocuments()
+    public void SetComponentPlacementContext(string componentId, string? placementId)
     {
+        _componentId = string.IsNullOrWhiteSpace(componentId)
+            ? BuiltInComponentIds.DesktopOfficeRecentDocuments
+            : componentId.Trim();
+        _placementId = placementId?.Trim() ?? string.Empty;
+        ReloadSettings();
+    }
+
+    private async void LoadDocuments()
+    {
+        if (_isLoading)
+        {
+            return;
+        }
+
         try
         {
             _isLoading = true;
+            ReloadSettings();
             StatusTextBlock.IsVisible = false;
+            DocumentsItemsControl.ItemsSource = null;
 
-            _documents = _recentDocumentsService.GetRecentDocuments(20);
+            var enabledSources = _enabledSources.ToArray();
+            _documents = await Task.Run(() => _recentDocumentsService.GetRecentDocuments(20, enabledSources));
 
             if (_documents.Count == 0)
             {
-                StatusTextBlock.Text = "暂无最近文档";
+                StatusTextBlock.Text = "\u6682\u65e0\u6700\u8fd1\u6587\u6863";
                 StatusTextBlock.IsVisible = true;
                 return;
             }
 
             UpdateDisplay();
         }
-        catch
+        catch (Exception ex)
         {
-            StatusTextBlock.Text = "加载失败";
+            AppLogger.Warn("OfficeRecentDocsWidget", "Failed to load recent Office documents.", ex);
+            StatusTextBlock.Text = "\u52a0\u8f7d\u5931\u8d25";
             StatusTextBlock.IsVisible = true;
         }
         finally
@@ -73,6 +98,14 @@ public partial class OfficeRecentDocumentsWidget : UserControl, IDesktopComponen
         }
     }
 
+    private void ReloadSettings()
+    {
+        var snapshot = _componentSettingsStore.LoadForComponent(_componentId, _placementId);
+        _enabledSources = OfficeRecentDocumentSourceTypes.NormalizeValues(
+            snapshot.OfficeRecentDocumentsEnabledSources,
+            useDefaultWhenEmpty: snapshot.OfficeRecentDocumentsEnabledSources is null);
+    }
+
     private void UpdateDisplay()
     {
         var displayItems = _documents.Select(d => new OfficeRecentDocumentViewModel
@@ -90,15 +123,29 @@ public partial class OfficeRecentDocumentsWidget : UserControl, IDesktopComponen
         var span = DateTime.Now - dateTime;
 
         if (span.TotalMinutes < 1)
-            return "刚刚";
+        {
+            return "\u521a\u521a";
+        }
+
         if (span.TotalMinutes < 60)
-            return $"{(int)span.TotalMinutes} 分钟前";
+        {
+            return $"{(int)span.TotalMinutes} \u5206\u949f\u524d";
+        }
+
         if (span.TotalHours < 24)
-            return $"{(int)span.TotalHours} 小时前";
+        {
+            return $"{(int)span.TotalHours} \u5c0f\u65f6\u524d";
+        }
+
         if (span.TotalDays < 7)
-            return $"{(int)span.TotalDays} 天前";
+        {
+            return $"{(int)span.TotalDays} \u5929\u524d";
+        }
+
         if (span.TotalDays < 30)
-            return $"{(int)(span.TotalDays / 7)} 周前";
+        {
+            return $"{(int)(span.TotalDays / 7)} \u5468\u524d";
+        }
 
         return dateTime.ToString("MM/dd");
     }

LanMountainDesktop/Views/Components/RemovableStorageWidget.axaml

@@ -0,0 +1,119 @@
+<UserControl xmlns="https://github.com/avaloniaui"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+             xmlns:fi="using:FluentIcons.Avalonia"
+             mc:Ignorable="d"
+             d:DesignWidth="280"
+             d:DesignHeight="280"
+             x:Class="LanMountainDesktop.Views.Components.RemovableStorageWidget">
+
+    <Border x:Name="RootBorder"
+            CornerRadius="28"
+            BorderThickness="1"
+            Padding="16"
+            ClipToBounds="True">
+        <Grid>
+            <Border x:Name="AccentOrb"
+                    Width="132"
+                    Height="132"
+                    HorizontalAlignment="Right"
+                    VerticalAlignment="Top"
+                    Margin="0,-48,-48,0"
+                    CornerRadius="66"
+                    IsHitTestVisible="False" />
+
+            <Border x:Name="AccentGlow"
+                    Height="76"
+                    Margin="-18,0,-18,-34"
+                    HorizontalAlignment="Stretch"
+                    VerticalAlignment="Bottom"
+                    CornerRadius="38"
+                    Opacity="0.42"
+                    IsHitTestVisible="False" />
+
+            <Grid x:Name="LayoutGrid"
+                  RowDefinitions="Auto,*,Auto,Auto"
+                  RowSpacing="10">
+                <Grid x:Name="HeaderGrid"
+                      ColumnDefinitions="Auto,*"
+                      ColumnSpacing="12">
+                    <Border x:Name="IconBadge"
+                            Width="44"
+                            Height="44"
+                            CornerRadius="22"
+                            VerticalAlignment="Top">
+                        <fi:FluentIcon x:Name="DriveIcon"
+                                       Icon="UsbStick"
+                                       IconVariant="Regular"
+                                       FontSize="24"
+                                       HorizontalAlignment="Center"
+                                       VerticalAlignment="Center" />
+                    </Border>
+
+                    <StackPanel x:Name="HeaderTextStack"
+                                Grid.Column="1"
+                                Spacing="2"
+                                VerticalAlignment="Center">
+                        <TextBlock x:Name="DriveNameTextBlock"
+                                   FontWeight="SemiBold"
+                                   TextWrapping="NoWrap"
+                                   TextTrimming="CharacterEllipsis" />
+                        <TextBlock x:Name="DriveDetailTextBlock"
+                                   TextWrapping="NoWrap"
+                                   TextTrimming="CharacterEllipsis" />
+                    </StackPanel>
+                </Grid>
+
+                <TextBlock x:Name="StatusTextBlock"
+                           Grid.Row="1"
+                           VerticalAlignment="Center"
+                           TextWrapping="Wrap" />
+
+                <Button x:Name="OpenButton"
+                        Grid.Row="2"
+                        Height="42"
+                        Padding="14,0"
+                        CornerRadius="999"
+                        HorizontalAlignment="Stretch"
+                        HorizontalContentAlignment="Center"
+                        Click="OnOpenClick">
+                    <Grid ColumnDefinitions="Auto,*"
+                          ColumnSpacing="8">
+                        <fi:FluentIcon x:Name="OpenButtonIcon"
+                                       Icon="OpenFolder"
+                                       IconVariant="Regular"
+                                       FontSize="16"
+                                       VerticalAlignment="Center" />
+                        <TextBlock x:Name="OpenButtonTextBlock"
+                                   Grid.Column="1"
+                                   FontWeight="SemiBold"
+                                   VerticalAlignment="Center" />
+                    </Grid>
+                </Button>
+
+                <Button x:Name="EjectButton"
+                        Grid.Row="3"
+                        Height="42"
+                        Padding="14,0"
+                        CornerRadius="999"
+                        HorizontalAlignment="Stretch"
+                        HorizontalContentAlignment="Center"
+                        Click="OnEjectClick">
+                    <Grid ColumnDefinitions="Auto,*"
+                          ColumnSpacing="8">
+                        <fi:FluentIcon x:Name="EjectButtonIcon"
+                                       Icon="ArrowEject"
+                                       IconVariant="Regular"
+                                       FontSize="16"
+                                       VerticalAlignment="Center" />
+                        <TextBlock x:Name="EjectButtonTextBlock"
+                                   Grid.Column="1"
+                                   FontWeight="SemiBold"
+                                   VerticalAlignment="Center" />
+                    </Grid>
+                </Button>
+            </Grid>
+        </Grid>
+    </Border>
+</UserControl>

LanMountainDesktop/Views/Components/RemovableStorageWidget.axaml.cs

@@ -0,0 +1,596 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+using Avalonia;
+using Avalonia.Controls;
+using Avalonia.Interactivity;
+using Avalonia.Media;
+using Avalonia.Styling;
+using Avalonia.Threading;
+using FluentIcons.Avalonia;
+using LanMountainDesktop.ComponentSystem;
+using LanMountainDesktop.Models;
+using LanMountainDesktop.PluginSdk;
+using LanMountainDesktop.Services;
+using LanMountainDesktop.Services.Settings;
+using LanMountainDesktop.Theme;
+
+namespace LanMountainDesktop.Views.Components;
+
+public partial class RemovableStorageWidget : UserControl, IDesktopComponentWidget, IDesktopPageVisibilityAwareComponentWidget, IComponentPlacementContextAware, IDisposable
+{
+    private readonly record struct RemovableStoragePalette(
+        Color BackgroundFrom,
+        Color BackgroundTo,
+        Color Border,
+        Color AccentOrb,
+        Color AccentGlow,
+        Color IconBadgeBackground,
+        Color IconForeground,
+        Color PrimaryText,
+        Color SecondaryText,
+        Color StatusText,
+        Color Accent,
+        Color OnAccent,
+        Color SecondaryButtonBackground,
+        Color SecondaryButtonBorder,
+        Color SecondaryButtonForeground,
+        Color DisabledButtonBackground,
+        Color DisabledButtonBorder,
+        Color DisabledButtonForeground);
+
+    private readonly DispatcherTimer _pollTimer = new()
+    {
+        Interval = TimeSpan.FromSeconds(2)
+    };
+
+    private readonly IRemovableStorageService _removableStorageService = new RemovableStorageService();
+    private readonly LocalizationService _localizationService = new();
+    private ISettingsService _settingsService = HostSettingsFacadeProvider.GetOrCreate().Settings;
+    private IComponentInstanceSettingsStore _componentSettingsStore = HostComponentSettingsStoreProvider.GetOrCreate();
+
+    private IReadOnlyList<RemovableStorageDrive> _connectedDrives = Array.Empty<RemovableStorageDrive>();
+    private string _componentId = BuiltInComponentIds.DesktopRemovableStorage;
+    private string _placementId = string.Empty;
+    private string _languageCode = "zh-CN";
+    private string? _componentColorScheme;
+    private string _selectedDriveRootPath = string.Empty;
+    private string? _statusOverrideText;
+    private double _currentCellSize = 48;
+    private bool _isAttached;
+    private bool _isOnActivePage = true;
+    private bool _isRefreshing;
+    private bool _isDisposed;
+
+    public RemovableStorageWidget()
+    {
+        InitializeComponent();
+
+        _pollTimer.Tick += OnPollTimerTick;
+        AttachedToVisualTree += OnAttachedToVisualTree;
+        DetachedFromVisualTree += OnDetachedFromVisualTree;
+        SizeChanged += OnSizeChanged;
+        ActualThemeVariantChanged += OnActualThemeVariantChanged;
+
+        ApplyCellSize(_currentCellSize);
+        ReloadSettings();
+        ApplyVisualState();
+    }
+
+    public void ApplyCellSize(double cellSize)
+    {
+        _currentCellSize = Math.Max(1, cellSize);
+        ApplyLayoutMetrics();
+    }
+
+    public void SetDesktopPageContext(bool isOnActivePage, bool isEditMode)
+    {
+        _ = isEditMode;
+        var shouldRefresh = !_isOnActivePage && isOnActivePage;
+        _isOnActivePage = isOnActivePage;
+        UpdatePollingState();
+
+        if (shouldRefresh)
+        {
+            _ = RefreshDriveListAsync();
+        }
+    }
+
+    public void SetComponentPlacementContext(string componentId, string? placementId)
+    {
+        _componentId = string.IsNullOrWhiteSpace(componentId)
+            ? BuiltInComponentIds.DesktopRemovableStorage
+            : componentId.Trim();
+        _placementId = placementId?.Trim() ?? string.Empty;
+        RefreshFromSettings();
+    }
+
+    public void RefreshFromSettings()
+    {
+        ReloadSettings();
+        ApplyVisualState();
+    }
+
+    private void OnAttachedToVisualTree(object? sender, VisualTreeAttachmentEventArgs e)
+    {
+        _ = sender;
+        _ = e;
+        _isAttached = true;
+        UpdatePollingState();
+        _ = RefreshDriveListAsync();
+    }
+
+    private void OnDetachedFromVisualTree(object? sender, VisualTreeAttachmentEventArgs e)
+    {
+        _ = sender;
+        _ = e;
+        _isAttached = false;
+        UpdatePollingState();
+    }
+
+    private void OnSizeChanged(object? sender, SizeChangedEventArgs e)
+    {
+        _ = sender;
+        _ = e;
+        ApplyLayoutMetrics();
+    }
+
+    private void OnActualThemeVariantChanged(object? sender, EventArgs e)
+    {
+        _ = sender;
+        _ = e;
+        ApplyVisualState();
+    }
+
+    private async void OnPollTimerTick(object? sender, EventArgs e)
+    {
+        _ = sender;
+        _ = e;
+        await RefreshDriveListAsync();
+    }
+
+    private async void OnOpenClick(object? sender, RoutedEventArgs e)
+    {
+        _ = sender;
+        _ = e;
+        var drive = GetSelectedDrive();
+        if (drive is null)
+        {
+            return;
+        }
+
+        if (_removableStorageService.OpenDrive(drive.RootPath))
+        {
+            _statusOverrideText = L("removable_storage.widget.ready", "Ready to open or eject.");
+            ApplyVisualState();
+            return;
+        }
+
+        _statusOverrideText = L("removable_storage.widget.open_failed", "Failed to open this drive.");
+        ApplyVisualState();
+        await RefreshDriveListAsync();
+    }
+
+    private async void OnEjectClick(object? sender, RoutedEventArgs e)
+    {
+        _ = sender;
+        _ = e;
+        var drive = GetSelectedDrive();
+        if (drive is null)
+        {
+            return;
+        }
+
+        _statusOverrideText = L("removable_storage.widget.ejecting", "Ejecting drive...");
+        ApplyVisualState();
+
+        var ejected = _removableStorageService.EjectDrive(drive.RootPath);
+        _statusOverrideText = ejected
+            ? L("removable_storage.widget.ejecting", "Ejecting drive...")
+            : L("removable_storage.widget.eject_failed", "Could not eject this drive. Close any files on it and try again.");
+        ApplyVisualState();
+        await RefreshDriveListAsync();
+    }
+
+    private async Task RefreshDriveListAsync()
+    {
+        if (_isDisposed || _isRefreshing)
+        {
+            return;
+        }
+
+        _isRefreshing = true;
+
+        try
+        {
+            var previousDriveRoots = new HashSet<string>(
+                _connectedDrives.Select(drive => drive.RootPath),
+                StringComparer.OrdinalIgnoreCase);
+
+            var latestDrives = await Task.Run(() => _removableStorageService.GetConnectedDrives());
+            if (_isDisposed)
+            {
+                return;
+            }
+
+            var newlyInsertedDrive = latestDrives.FirstOrDefault(drive => !previousDriveRoots.Contains(drive.RootPath));
+            _connectedDrives = latestDrives;
+
+            if (newlyInsertedDrive is not null)
+            {
+                _selectedDriveRootPath = newlyInsertedDrive.RootPath;
+            }
+            else if (string.IsNullOrWhiteSpace(_selectedDriveRootPath) ||
+                     !_connectedDrives.Any(drive => string.Equals(drive.RootPath, _selectedDriveRootPath, StringComparison.OrdinalIgnoreCase)))
+            {
+                _selectedDriveRootPath = _connectedDrives.FirstOrDefault().RootPath ?? string.Empty;
+            }
+
+            if (_connectedDrives.Count == 0)
+            {
+                _selectedDriveRootPath = string.Empty;
+                _statusOverrideText = null;
+            }
+            else if (newlyInsertedDrive is not null)
+            {
+                _statusOverrideText = null;
+            }
+
+            ReloadSettings();
+            ApplyVisualState();
+        }
+        catch (Exception ex)
+        {
+            AppLogger.Warn("RemovableStorageWidget", "Failed to refresh removable storage widget.", ex);
+            _statusOverrideText = L("removable_storage.widget.refresh_failed", "Drive list refresh failed.");
+            ApplyVisualState();
+        }
+        finally
+        {
+            _isRefreshing = false;
+        }
+    }
+
+    private void ReloadSettings()
+    {
+        try
+        {
+            var appSettings = _settingsService.LoadSnapshot<AppSettingsSnapshot>(SettingsScope.App);
+            var componentSettings = _componentSettingsStore.LoadForComponent(_componentId, _placementId);
+            _languageCode = _localizationService.NormalizeLanguageCode(appSettings.LanguageCode);
+            _componentColorScheme = componentSettings.ColorSchemeSource;
+        }
+        catch
+        {
+            _languageCode = _localizationService.NormalizeLanguageCode(_languageCode);
+        }
+    }
+
+    private void ApplyVisualState()
+    {
+        var drive = GetSelectedDrive();
+        var hasDrive = drive is not null;
+        var palette = ResolvePalette();
+
+        RootBorder.Background = CreateGradientBrush(palette.BackgroundFrom, palette.BackgroundTo);
+        RootBorder.BorderBrush = CreateBrush(palette.Border);
+        AccentOrb.Background = CreateBrush(palette.AccentOrb);
+        AccentGlow.Background = CreateBrush(palette.AccentGlow);
+        IconBadge.Background = CreateBrush(palette.IconBadgeBackground);
+        DriveIcon.Foreground = CreateBrush(palette.IconForeground);
+        DriveNameTextBlock.Foreground = CreateBrush(palette.PrimaryText);
+        DriveDetailTextBlock.Foreground = CreateBrush(palette.SecondaryText);
+        StatusTextBlock.Foreground = CreateBrush(palette.StatusText);
+
+        if (hasDrive)
+        {
+            ApplyButtonPalette(
+                OpenButton,
+                OpenButtonIcon,
+                OpenButtonTextBlock,
+                palette.Accent,
+                palette.OnAccent,
+                palette.Accent);
+            ApplyButtonPalette(
+                EjectButton,
+                EjectButtonIcon,
+                EjectButtonTextBlock,
+                palette.SecondaryButtonBackground,
+                palette.SecondaryButtonForeground,
+                palette.SecondaryButtonBorder);
+        }
+        else
+        {
+            ApplyButtonPalette(
+                OpenButton,
+                OpenButtonIcon,
+                OpenButtonTextBlock,
+                palette.DisabledButtonBackground,
+                palette.DisabledButtonForeground,
+                palette.DisabledButtonBorder);
+            ApplyButtonPalette(
+                EjectButton,
+                EjectButtonIcon,
+                EjectButtonTextBlock,
+                palette.DisabledButtonBackground,
+                palette.DisabledButtonForeground,
+                palette.DisabledButtonBorder);
+        }
+
+        OpenButton.IsEnabled = hasDrive;
+        EjectButton.IsEnabled = hasDrive;
+
+        OpenButtonTextBlock.Text = L("removable_storage.action.open", "Open");
+        EjectButtonTextBlock.Text = L("removable_storage.action.eject", "Eject");
+
+        if (hasDrive)
+        {
+            var selectedDrive = drive!;
+            DriveNameTextBlock.Text = ResolveDriveName(selectedDrive);
+            DriveDetailTextBlock.Text = selectedDrive.DriveLetter;
+            StatusTextBlock.Text = _statusOverrideText ??
+                                   L("removable_storage.widget.ready", "Ready to open or eject.");
+        }
+        else
+        {
+            DriveNameTextBlock.Text = L("removable_storage.widget.empty_title", "No device inserted");
+            DriveDetailTextBlock.Text = L("removable_storage.widget.empty_subtitle", "Insert a USB drive to show it here.");
+            StatusTextBlock.Text = L("removable_storage.widget.empty_hint", "Buttons stay disabled until a removable device is inserted.");
+        }
+
+        ApplyLayoutMetrics();
+    }
+
+    private void ApplyLayoutMetrics()
+    {
+        var scale = ResolveScale();
+        var width = Bounds.Width > 1 ? Bounds.Width : _currentCellSize * 2;
+
+        var cornerRadius = Math.Clamp(_currentCellSize * 0.44, 18, 34);
+        RootBorder.CornerRadius = new CornerRadius(cornerRadius);
+        RootBorder.Padding = new Thickness(
+            Math.Clamp(16 * scale, 10, 24),
+            Math.Clamp(15 * scale, 10, 22),
+            Math.Clamp(16 * scale, 10, 24),
+            Math.Clamp(15 * scale, 10, 22));
+
+        LayoutGrid.RowSpacing = Math.Clamp(10 * scale, 8, 16);
+        HeaderGrid.ColumnSpacing = Math.Clamp(12 * scale, 8, 16);
+        HeaderTextStack.Spacing = Math.Clamp(2 * scale, 1, 4);
+
+        var badgeSize = Math.Clamp(44 * scale, 38, 60);
+        IconBadge.Width = badgeSize;
+        IconBadge.Height = badgeSize;
+        IconBadge.CornerRadius = new CornerRadius(badgeSize * 0.5);
+        DriveIcon.FontSize = Math.Clamp(24 * scale, 20, 32);
+
+        DriveNameTextBlock.FontSize = Math.Clamp(16 * scale, 13, 24);
+        DriveDetailTextBlock.FontSize = Math.Clamp(11.5 * scale, 10, 16);
+        StatusTextBlock.FontSize = Math.Clamp(12 * scale, 10, 17);
+        StatusTextBlock.MaxWidth = Math.Max(96, width - (RootBorder.Padding.Left + RootBorder.Padding.Right));
+
+        var buttonHeight = Math.Clamp(42 * scale, 38, 54);
+        var buttonPadding = Math.Clamp(14 * scale, 10, 20);
+        var buttonCornerRadius = Math.Clamp(buttonHeight * 0.5, 18, 999);
+
+        OpenButton.Height = buttonHeight;
+        OpenButton.Padding = new Thickness(buttonPadding, 0);
+        OpenButton.CornerRadius = new CornerRadius(buttonCornerRadius);
+
+        EjectButton.Height = buttonHeight;
+        EjectButton.Padding = new Thickness(buttonPadding, 0);
+        EjectButton.CornerRadius = new CornerRadius(buttonCornerRadius);
+
+        OpenButtonIcon.FontSize = Math.Clamp(16 * scale, 14, 20);
+        EjectButtonIcon.FontSize = Math.Clamp(16 * scale, 14, 20);
+        OpenButtonTextBlock.FontSize = Math.Clamp(13 * scale, 11.5, 18);
+        EjectButtonTextBlock.FontSize = Math.Clamp(13 * scale, 11.5, 18);
+
+        AccentOrb.Width = Math.Clamp(width * 0.44, 96, 176);
+        AccentOrb.Height = AccentOrb.Width;
+        AccentOrb.CornerRadius = new CornerRadius(AccentOrb.Width * 0.5);
+        AccentGlow.Height = Math.Clamp(76 * scale, 52, 110);
+        AccentGlow.CornerRadius = new CornerRadius(AccentGlow.Height * 0.5);
+    }
+
+    private RemovableStorageDrive? GetSelectedDrive()
+    {
+        if (_connectedDrives.Count == 0)
+        {
+            return null;
+        }
+
+        if (!string.IsNullOrWhiteSpace(_selectedDriveRootPath))
+        {
+            var selected = _connectedDrives.FirstOrDefault(drive =>
+                string.Equals(drive.RootPath, _selectedDriveRootPath, StringComparison.OrdinalIgnoreCase));
+            if (selected is not null)
+            {
+                return selected;
+            }
+        }
+
+        return _connectedDrives[0];
+    }
+
+    private string ResolveDriveName(RemovableStorageDrive drive)
+    {
+        return string.IsNullOrWhiteSpace(drive.VolumeLabel)
+            ? L("removable_storage.widget.default_name", "Removable Drive")
+            : drive.VolumeLabel.Trim();
+    }
+
+    private RemovableStoragePalette ResolvePalette()
+    {
+        var useMonetColor = ComponentColorSchemeHelper.ShouldUseMonetColor(
+            _componentColorScheme,
+            ComponentColorSchemeHelper.GetCurrentGlobalThemeColorMode());
+
+        if (!useMonetColor)
+        {
+            var nativeAccent = Color.Parse("#FF65A8FF");
+            var nativeBackgroundFrom = Color.Parse("#FF10345F");
+            var nativeBackgroundTo = Color.Parse("#FF0D213E");
+            var nativePrimaryText = Color.Parse("#FFF4F8FF");
+            var nativeSecondaryText = Color.Parse("#C8D9F5FF");
+            var nativeDisabled = Color.Parse("#30465D7A");
+
+            return new RemovableStoragePalette(
+                nativeBackgroundFrom,
+                nativeBackgroundTo,
+                Color.Parse("#6A97D6FF"),
+                Color.Parse("#2F8BC5FF"),
+                Color.Parse("#4C79BFFF"),
+                Color.Parse("#335BAAFF"),
+                Color.Parse("#FFF5FAFF"),
+                nativePrimaryText,
+                nativeSecondaryText,
+                Color.Parse("#D8E7FFFF"),
+                nativeAccent,
+                ColorMath.EnsureContrast(Color.Parse("#FF071420"), nativeAccent, 4.5),
+                Color.Parse("#24FFFFFF"),
+                Color.Parse("#5A9ACDFF"),
+                nativePrimaryText,
+                nativeDisabled,
+                Color.Parse("#4D6782A0"),
+                Color.Parse("#8FA8BDD1"));
+        }
+
+        var surfaceRaised = ResolveThemeColor("AdaptiveSurfaceRaisedBrush", "#FF1A2332");
+        var surfaceOverlay = ResolveThemeColor("AdaptiveSurfaceOverlayBrush", "#FF111827");
+        var accent = ResolveThemeColor("AdaptiveAccentBrush", "#FF61A8FF");
+        var onAccent = ResolveThemeColor("AdaptiveOnAccentBrush", "#FFFFFFFF");
+        var primaryText = ResolveThemeColor("AdaptiveTextPrimaryBrush", "#FFF8FAFC");
+        var secondaryText = ResolveThemeColor("AdaptiveTextSecondaryBrush", "#FFD0D7E3");
+        var mutedText = ResolveThemeColor("AdaptiveTextMutedBrush", "#FFAFB8C7");
+        var disabledButtonBackground = ColorMath.WithAlpha(ColorMath.Blend(surfaceRaised, surfaceOverlay, 0.35), 0xD8);
+        var disabledButtonBorder = ColorMath.WithAlpha(ColorMath.Blend(surfaceRaised, accent, 0.18), 0x88);
+        var disabledButtonForeground = ColorMath.WithAlpha(primaryText, 0x88);
+
+        var backgroundFrom = ColorMath.Blend(surfaceRaised, accent, 0.18);
+        var backgroundTo = ColorMath.Blend(surfaceOverlay, surfaceRaised, 0.46);
+        var border = ColorMath.WithAlpha(ColorMath.Blend(accent, surfaceRaised, 0.38), 0xB8);
+        var iconBadgeBackground = ColorMath.Blend(surfaceRaised, accent, 0.28);
+        var iconForeground = ColorMath.EnsureContrast(accent, iconBadgeBackground, 3.0);
+        var secondaryButtonBackground = ColorMath.WithAlpha(ColorMath.Blend(surfaceRaised, accent, 0.10), 0xE6);
+        var secondaryButtonBorder = ColorMath.WithAlpha(ColorMath.Blend(accent, surfaceRaised, 0.46), 0xC6);
+
+        return new RemovableStoragePalette(
+            backgroundFrom,
+            backgroundTo,
+            border,
+            ColorMath.WithAlpha(accent, 0x28),
+            ColorMath.WithAlpha(ColorMath.Blend(accent, backgroundFrom, 0.26), 0x74),
+            iconBadgeBackground,
+            iconForeground,
+            primaryText,
+            secondaryText,
+            mutedText,
+            accent,
+            onAccent,
+            secondaryButtonBackground,
+            secondaryButtonBorder,
+            primaryText,
+            disabledButtonBackground,
+            disabledButtonBorder,
+            disabledButtonForeground);
+    }
+
+    private Color ResolveThemeColor(string resourceKey, string fallbackHex)
+    {
+        if (this.TryFindResource(resourceKey, out var resource))
+        {
+            if (resource is ISolidColorBrush solidBrush)
+            {
+                return solidBrush.Color;
+            }
+
+            if (resource is SolidColorBrush directSolidBrush)
+            {
+                return directSolidBrush.Color;
+            }
+        }
+
+        return Color.Parse(fallbackHex);
+    }
+
+    private double ResolveScale()
+    {
+        var cellScale = Math.Clamp(_currentCellSize / 48d, 0.72, 2.2);
+        var widthScale = Bounds.Width > 1 ? Math.Clamp(Bounds.Width / 220d, 0.72, 2.4) : 1;
+        var heightScale = Bounds.Height > 1 ? Math.Clamp(Bounds.Height / 220d, 0.72, 2.4) : 1;
+        return Math.Clamp(Math.Min(cellScale, Math.Min(widthScale, heightScale)), 0.72, 2.2);
+    }
+
+    private string L(string key, string fallback)
+    {
+        return _localizationService.GetString(_languageCode, key, fallback);
+    }
+
+    private static void ApplyButtonPalette(
+        Button button,
+        FluentIcon icon,
+        TextBlock textBlock,
+        Color background,
+        Color foreground,
+        Color border)
+    {
+        button.Background = CreateBrush(background);
+        button.BorderBrush = CreateBrush(border);
+        button.BorderThickness = new Thickness(1);
+        button.Foreground = CreateBrush(foreground);
+        icon.Foreground = CreateBrush(foreground);
+        textBlock.Foreground = CreateBrush(foreground);
+    }
+
+    private static IBrush CreateGradientBrush(Color from, Color to)
+    {
+        return new LinearGradientBrush
+        {
+            StartPoint = new RelativePoint(0, 0, RelativeUnit.Relative),
+            EndPoint = new RelativePoint(1, 1, RelativeUnit.Relative),
+            GradientStops = new GradientStops
+            {
+                new GradientStop(from, 0),
+                new GradientStop(to, 1)
+            }
+        };
+    }
+
+    private static SolidColorBrush CreateBrush(Color color)
+    {
+        return new(color);
+    }
+
+    private void UpdatePollingState()
+    {
+        if (_isAttached && _isOnActivePage)
+        {
+            if (!_pollTimer.IsEnabled)
+            {
+                _pollTimer.Start();
+            }
+
+            return;
+        }
+
+        _pollTimer.Stop();
+    }
+
+    public void Dispose()
+    {
+        if (_isDisposed)
+        {
+            return;
+        }
+
+        _isDisposed = true;
+        _pollTimer.Stop();
+        _pollTimer.Tick -= OnPollTimerTick;
+        AttachedToVisualTree -= OnAttachedToVisualTree;
+        DetachedFromVisualTree -= OnDetachedFromVisualTree;
+        SizeChanged -= OnSizeChanged;
+        ActualThemeVariantChanged -= OnActualThemeVariantChanged;
+    }
+}

LanMountainDesktop/Views/Components/StudyDeductionReasonsWidget.axaml

@@ -7,7 +7,7 @@
              d:DesignHeight="220"
              x:Class="LanMountainDesktop.Views.Components.StudyDeductionReasonsWidget">
     <Border x:Name="RootBorder"
-            Classes="glass-strong"
+            Classes="surface-translucent-strong"
             CornerRadius="22"
             Padding="12,10"
             ClipToBounds="True">

LanMountainDesktop/Views/Components/StudyInterruptDensityWidget.axaml

@@ -7,7 +7,7 @@
              d:DesignHeight="220"
              x:Class="LanMountainDesktop.Views.Components.StudyInterruptDensityWidget">
     <Border x:Name="RootBorder"
-            Classes="glass-strong"
+            Classes="surface-translucent-strong"
             CornerRadius="22"
             Padding="14,10"
             ClipToBounds="True">

LanMountainDesktop/Views/Components/StudyNoiseCurveWidget.axaml

@@ -1,4 +1,4 @@
-<UserControl xmlns="https://github.com/avaloniaui"
+<UserControl xmlns="https://github.com/avaloniaui"
              xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
              xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
              xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
@@ -8,7 +8,7 @@
              d:DesignHeight="320"
              x:Class="LanMountainDesktop.Views.Components.StudyNoiseCurveWidget">
     <Border x:Name="RootBorder"
-            Classes="glass-strong"
+            Classes="surface-translucent-strong"
             CornerRadius="24"
             Padding="14,10"
             ClipToBounds="True">

LanMountainDesktop/Views/Components/StudyNoiseDistributionWidget.axaml

@@ -8,7 +8,7 @@
              d:DesignHeight="320"
              x:Class="LanMountainDesktop.Views.Components.StudyNoiseDistributionWidget">
     <Border x:Name="RootBorder"
-            Classes="glass-strong"
+            Classes="surface-translucent-strong"
             CornerRadius="24"
             Padding="14,10"
             ClipToBounds="True">

LanMountainDesktop/Views/Components/StudyScoreOverviewWidget.axaml

@@ -7,7 +7,7 @@
              d:DesignHeight="360"
              x:Class="LanMountainDesktop.Views.Components.StudyScoreOverviewWidget">
     <Border x:Name="RootBorder"
-            Classes="glass-strong"
+            Classes="surface-translucent-strong"
             CornerRadius="24"
             Padding="16,14"
             ClipToBounds="True">

LanMountainDesktop/Views/Components/StudySessionControlWidget.axaml

@@ -8,7 +8,7 @@
              d:DesignHeight="150"
              x:Class="LanMountainDesktop.Views.Components.StudySessionControlWidget">
     <Border x:Name="RootBorder"
-            Classes="glass-strong"
+            Classes="surface-translucent-strong"
             CornerRadius="18"
             Padding="14,10"
             ClipToBounds="True">

LanMountainDesktop/Views/Components/StudySessionHistoryWidget.axaml

@@ -7,7 +7,7 @@
              d:DesignHeight="220"
              x:Class="LanMountainDesktop.Views.Components.StudySessionHistoryWidget">
     <Border x:Name="RootBorder"
-            Classes="glass-strong"
+            Classes="surface-translucent-strong"
             CornerRadius="22"
             Padding="12,10"
             ClipToBounds="True">

LanMountainDesktop/Views/Components/WhiteboardWidget.axaml.cs

@@ -1,4 +1,5 @@
-using System;
+using System;
+using System.Collections.Generic;
 using System.IO;
 using System.Linq;
 using System.Reflection;
@@ -9,13 +10,18 @@ using Avalonia.Interactivity;
 using Avalonia.Media;
 using Avalonia.Platform.Storage;
 using Avalonia.Styling;
+using Avalonia.Threading;
 using DotNetCampus.Inking;
+using DotNetCampus.Inking.Primitive;
 using FluentIcons.Avalonia;
+using LanMountainDesktop.ComponentSystem;
+using LanMountainDesktop.Models;
+using LanMountainDesktop.Services;
 using SkiaSharp;
 
 namespace LanMountainDesktop.Views.Components;
 
-public partial class WhiteboardWidget : UserControl, IDesktopComponentWidget
+public partial class WhiteboardWidget : UserControl, IDesktopComponentWidget, IComponentPlacementContextAware, IDisposable
 {
     private enum WhiteboardToolMode
     {
@@ -24,11 +30,22 @@ public partial class WhiteboardWidget : UserControl, IDesktopComponentWidget
     }
 
     private static readonly PropertyInfo? StrokeColorProperty = typeof(SkiaStroke).GetProperty(nameof(SkiaStroke.Color));
+    private static readonly PropertyInfo? StrokePointListProperty = typeof(SkiaStroke).GetProperty("PointList");
     private readonly int _baseWidthCells;
+    private readonly IComponentInstanceSettingsStore _componentSettingsStore = HostComponentSettingsStoreProvider.GetOrCreate();
+    private readonly IWhiteboardNotePersistenceService _notePersistenceService = new WhiteboardNotePersistenceService();
+    private readonly DispatcherTimer _noteSaveTimer = new() { Interval = TimeSpan.FromMinutes(5) };
     private double _currentCellSize = 48;
     private WhiteboardToolMode _toolMode = WhiteboardToolMode.Pen;
     private bool? _isNightModeApplied;
     private SKColor _currentInkColor = SKColors.Black;
+    private string _componentId = BuiltInComponentIds.DesktopWhiteboard;
+    private string _placementId = string.Empty;
+    private int _noteRetentionDays = WhiteboardNoteRetentionPolicy.DefaultDays;
+    private bool _isApplyingPersistedSnapshot;
+    private bool _noteDirty;
+    private int _noteLoadRevision;
+    private bool _disposed;
 
     public WhiteboardWidget()
         : this(baseWidthCells: 2)
@@ -43,21 +60,26 @@ public partial class WhiteboardWidget : UserControl, IDesktopComponentWidget
         DetachedFromVisualTree += OnDetachedFromVisualTree;
         SizeChanged += OnSizeChanged;
         ActualThemeVariantChanged += OnActualThemeVariantChanged;
+        _noteSaveTimer.Tick += OnNoteSaveTimerTick;
 
         ConfigureInkCanvas();
         ApplyCellSize(_currentCellSize);
+        RefreshFromSettings();
         ApplyThemeVisual(force: true);
         SetToolMode(WhiteboardToolMode.Pen);
     }
 
+    public int NoteRetentionDays => _noteRetentionDays;
+
     private void OnAttachedToVisualTree(object? sender, VisualTreeAttachmentEventArgs e)
     {
         ApplyThemeVisual(force: true);
+        SchedulePersistedNoteLoad();
     }
 
     private void OnDetachedFromVisualTree(object? sender, VisualTreeAttachmentEventArgs e)
     {
-        // Keep all state in-memory for lightweight re-attach scenarios.
+        PersistNoteImmediately();
     }
 
     private void OnSizeChanged(object? sender, SizeChangedEventArgs e)
@@ -79,6 +101,9 @@ public partial class WhiteboardWidget : UserControl, IDesktopComponentWidget
         settings.EraserSize = new Size(20, 20);
         settings.IsBitmapCacheEnabled = true;
         settings.MaxBitmapCacheSize = 2048;
+        InkCanvas.StrokeCollected += OnInkCanvasStrokeCollected;
+        InkCanvas.PointerReleased += OnInkCanvasPointerReleased;
+        InkCanvas.PointerCaptureLost += OnInkCanvasPointerCaptureLost;
     }
 
     public void ApplyCellSize(double cellSize)
@@ -134,6 +159,63 @@ public partial class WhiteboardWidget : UserControl, IDesktopComponentWidget
         RefreshToolButtonVisuals();
     }
 
+    public void SetComponentPlacementContext(string componentId, string? placementId)
+    {
+        var nextComponentId = string.IsNullOrWhiteSpace(componentId)
+            ? BuiltInComponentIds.DesktopWhiteboard
+            : componentId.Trim();
+        var nextPlacementId = placementId?.Trim() ?? string.Empty;
+
+        if (_noteDirty &&
+            HasValidPersistenceContext() &&
+            (string.Compare(_componentId, nextComponentId, StringComparison.OrdinalIgnoreCase) != 0 ||
+             string.Compare(_placementId, nextPlacementId, StringComparison.OrdinalIgnoreCase) != 0))
+        {
+            PersistNoteImmediately();
+        }
+
+        _componentId = nextComponentId;
+        _placementId = nextPlacementId;
+        RefreshFromSettings();
+        ClearAllStrokes();
+        SchedulePersistedNoteLoad();
+    }
+
+    public void RefreshFromSettings()
+    {
+        try
+        {
+            if (!HasValidPersistenceContext())
+            {
+                _noteRetentionDays = WhiteboardNoteRetentionPolicy.DefaultDays;
+                return;
+            }
+
+            var snapshot = _componentSettingsStore.LoadForComponent(_componentId, _placementId);
+            _noteRetentionDays = NormalizeRetentionDays(snapshot.WhiteboardNoteRetentionDays);
+            _notePersistenceService.TryDeleteExpiredNote(_componentId, _placementId, _noteRetentionDays);
+        }
+        catch
+        {
+            _noteRetentionDays = WhiteboardNoteRetentionPolicy.DefaultDays;
+        }
+    }
+
+    public void Dispose()
+    {
+        if (_disposed)
+        {
+            return;
+        }
+
+        _disposed = true;
+        _noteSaveTimer.Stop();
+        _noteSaveTimer.Tick -= OnNoteSaveTimerTick;
+        InkCanvas.StrokeCollected -= OnInkCanvasStrokeCollected;
+        InkCanvas.PointerReleased -= OnInkCanvasPointerReleased;
+        InkCanvas.PointerCaptureLost -= OnInkCanvasPointerCaptureLost;
+    }
+
     private void RecolorAllStrokes(SKColor targetColor)
     {
         for (var i = 0; i < InkCanvas.Strokes.Count; i++)
@@ -183,6 +265,14 @@ public partial class WhiteboardWidget : UserControl, IDesktopComponentWidget
         return false;
     }
 
+    private static int NormalizeRetentionDays(int days)
+    {
+        return WhiteboardNoteRetentionPolicy.NormalizeDays(
+            days <= 0
+                ? WhiteboardNoteRetentionPolicy.DefaultDays
+                : days);
+    }
+
     private static double CalculateRelativeLuminance(Color color)
     {
         static double ToLinear(double channel)
@@ -267,25 +357,8 @@ public partial class WhiteboardWidget : UserControl, IDesktopComponentWidget
 
     private void OnClearButtonClick(object? sender, RoutedEventArgs e)
     {
-        var strokeList = InkCanvas.Strokes.ToList();
-        foreach (var stroke in strokeList)
-        {
-            try
-            {
-                if (ReferenceEquals(stroke.InkCanvas, InkCanvas.AvaloniaSkiaInkCanvas))
-                {
-                    InkCanvas.AvaloniaSkiaInkCanvas.RemoveStaticStroke(stroke);
-                }
-            }
-            catch
-            {
-                // Keep the widget alive even if one stroke removal fails.
-            }
-        }
-
-        InkCanvas.AvaloniaSkiaInkCanvas.UseBitmapCache(false);
-        InkCanvas.AvaloniaSkiaInkCanvas.InvalidateBitmapCache();
-        InkCanvas.InvalidateVisual();
+        ClearAllStrokes();
+        QueueNoteSave();
     }
 
     private async void OnExportButtonClick(object? sender, RoutedEventArgs e)
@@ -358,4 +431,273 @@ public partial class WhiteboardWidget : UserControl, IDesktopComponentWidget
 
         svgCanvas.Flush();
     }
+
+    private void OnInkCanvasStrokeCollected(object? sender, DotNetCampus.Inking.Contexts.AvaloniaSkiaInkCanvasStrokeCollectedEventArgs e)
+    {
+        _ = sender;
+        _ = e;
+        QueueNoteSave();
+    }
+
+    private void OnInkCanvasPointerReleased(object? sender, Avalonia.Input.PointerReleasedEventArgs e)
+    {
+        _ = sender;
+        _ = e;
+        QueueNoteSave();
+    }
+
+    private void OnInkCanvasPointerCaptureLost(object? sender, Avalonia.Input.PointerCaptureLostEventArgs e)
+    {
+        _ = sender;
+        _ = e;
+        QueueNoteSave();
+    }
+
+    private void OnNoteSaveTimerTick(object? sender, EventArgs e)
+    {
+        _ = sender;
+        if (_disposed || _isApplyingPersistedSnapshot || !HasValidPersistenceContext())
+        {
+            _noteSaveTimer.Stop();
+            return;
+        }
+
+        if (!_noteDirty)
+        {
+            _noteSaveTimer.Stop();
+            return;
+        }
+
+        var noteSnapshot = BuildNoteSnapshot();
+        var componentId = _componentId;
+        var placementId = _placementId;
+        var retentionDays = _noteRetentionDays;
+        _noteDirty = false;
+        _noteSaveTimer.Stop();
+        _ = Task.Run(() => _notePersistenceService.SaveNote(componentId, placementId, noteSnapshot, retentionDays));
+    }
+
+    private void QueueNoteSave()
+    {
+        if (_disposed || _isApplyingPersistedSnapshot || !HasValidPersistenceContext())
+        {
+            return;
+        }
+
+        _noteDirty = true;
+        if (!_noteSaveTimer.IsEnabled)
+        {
+            _noteSaveTimer.Start();
+        }
+    }
+
+    private void PersistNoteImmediately()
+    {
+        if (_disposed || _isApplyingPersistedSnapshot || !HasValidPersistenceContext())
+        {
+            return;
+        }
+
+        if (!_noteDirty)
+        {
+            return;
+        }
+
+        _noteDirty = false;
+        _noteSaveTimer.Stop();
+        var noteSnapshot = BuildNoteSnapshot();
+        var componentId = _componentId;
+        var placementId = _placementId;
+        var retentionDays = _noteRetentionDays;
+        _ = Task.Run(() => _notePersistenceService.SaveNote(
+            componentId,
+            placementId,
+            noteSnapshot,
+            retentionDays));
+    }
+
+    private async void SchedulePersistedNoteLoad()
+    {
+        if (!HasValidPersistenceContext())
+        {
+            return;
+        }
+
+        var revision = ++_noteLoadRevision;
+        var componentId = _componentId;
+        var placementId = _placementId;
+        var retentionDays = _noteRetentionDays;
+
+        try
+        {
+            var noteSnapshot = await Task.Run(() => _notePersistenceService.LoadNote(componentId, placementId, retentionDays));
+            if (_disposed || revision != _noteLoadRevision ||
+                !string.Equals(_componentId, componentId, StringComparison.OrdinalIgnoreCase) ||
+                !string.Equals(_placementId, placementId, StringComparison.OrdinalIgnoreCase))
+            {
+                return;
+            }
+
+            Dispatcher.UIThread.Post(() =>
+            {
+                if (_disposed || revision != _noteLoadRevision)
+                {
+                    return;
+                }
+
+                _isApplyingPersistedSnapshot = true;
+                try
+                {
+                    ClearAllStrokes();
+                    ApplyNoteSnapshot(noteSnapshot);
+                    RecolorAllStrokes(_currentInkColor);
+                }
+                finally
+                {
+                    _isApplyingPersistedSnapshot = false;
+                }
+            });
+        }
+        catch
+        {
+            // Best effort only. Whiteboard should stay usable if persistence is unavailable.
+        }
+    }
+
+    private WhiteboardNoteSnapshot BuildNoteSnapshot()
+    {
+        return new WhiteboardNoteSnapshot
+        {
+            Strokes = InkCanvas.Strokes
+                .Select(BuildStrokeSnapshot)
+                .Where(static stroke => stroke.Points.Count > 0)
+                .ToList()
+        };
+    }
+
+    private static WhiteboardStrokeSnapshot BuildStrokeSnapshot(SkiaStroke stroke)
+    {
+        var pointList = TryGetStrokePoints(stroke);
+        return new WhiteboardStrokeSnapshot
+        {
+            Color = ToHexColor(stroke.Color),
+            InkThickness = stroke.InkThickness,
+            IgnorePressure = stroke.IgnorePressure,
+            Points = pointList
+                .Select(static point => new WhiteboardStylusPointSnapshot
+                {
+                    X = point.X,
+                    Y = point.Y,
+                    Pressure = point.Pressure,
+                    Width = point.Width ?? 0,
+                    Height = point.Height ?? 0
+                })
+                .ToList()
+        };
+    }
+
+    private void ApplyNoteSnapshot(WhiteboardNoteSnapshot snapshot)
+    {
+        if (snapshot.Strokes.Count == 0)
+        {
+            return;
+        }
+
+        var renderer = InkCanvas.AvaloniaSkiaInkCanvas.Settings.InkStrokeRenderer;
+        foreach (var strokeSnapshot in snapshot.Strokes)
+        {
+            var stylusPoints = strokeSnapshot.Points
+                .Select(ConvertStylusPoint)
+                .ToList();
+            if (stylusPoints.Count == 0)
+            {
+                continue;
+            }
+
+            var path = renderer.RenderInkToPath(stylusPoints, strokeSnapshot.InkThickness);
+            var staticStroke = SkiaStroke.CreateStaticStroke(
+                InkId.NewId(),
+                path,
+                new StylusPointListSpan(stylusPoints, 0, stylusPoints.Count),
+                ParseStrokeColor(strokeSnapshot.Color),
+                (float)strokeSnapshot.InkThickness,
+                strokeSnapshot.IgnorePressure,
+                renderer);
+            InkCanvas.AvaloniaSkiaInkCanvas.AddStaticStroke(staticStroke);
+        }
+
+        InkCanvas.AvaloniaSkiaInkCanvas.UpdateBitmapCache();
+        InkCanvas.InvalidateVisual();
+    }
+
+    private static InkStylusPoint ConvertStylusPoint(WhiteboardStylusPointSnapshot point)
+    {
+        return new InkStylusPoint(point.X, point.Y, (float)Math.Clamp(point.Pressure, 0f, 1f))
+        {
+            Width = point.Width > 0 ? point.Width : null,
+            Height = point.Height > 0 ? point.Height : null
+        };
+    }
+
+    private static SKColor ParseStrokeColor(string? value)
+    {
+        if (!string.IsNullOrWhiteSpace(value))
+        {
+            try
+            {
+                var color = Color.Parse(value);
+                return new SKColor(color.R, color.G, color.B, color.A);
+            }
+            catch
+            {
+                // Fall through to the default color.
+            }
+        }
+
+        return SKColors.Black;
+    }
+
+    private static string ToHexColor(SKColor color)
+    {
+        return $"#{color.Alpha:X2}{color.Red:X2}{color.Green:X2}{color.Blue:X2}";
+    }
+
+    private void ClearAllStrokes()
+    {
+        var strokeList = InkCanvas.Strokes.ToList();
+        foreach (var stroke in strokeList)
+        {
+            try
+            {
+                if (ReferenceEquals(stroke.InkCanvas, InkCanvas.AvaloniaSkiaInkCanvas))
+                {
+                    InkCanvas.AvaloniaSkiaInkCanvas.RemoveStaticStroke(stroke);
+                }
+            }
+            catch
+            {
+                // Keep the widget alive even if one stroke removal fails.
+            }
+        }
+
+        InkCanvas.AvaloniaSkiaInkCanvas.UseBitmapCache(false);
+        InkCanvas.AvaloniaSkiaInkCanvas.InvalidateBitmapCache();
+        InkCanvas.InvalidateVisual();
+    }
+
+    private bool HasValidPersistenceContext()
+    {
+        return !string.IsNullOrWhiteSpace(_componentId) &&
+               !string.IsNullOrWhiteSpace(_placementId);
+    }
+
+    private static IReadOnlyList<InkStylusPoint> TryGetStrokePoints(SkiaStroke stroke)
+    {
+        if (StrokePointListProperty?.GetValue(stroke) is IReadOnlyList<InkStylusPoint> pointList)
+        {
+            return pointList;
+        }
+
+        return Array.Empty<InkStylusPoint>();
+    }
 }

LanMountainDesktop/Views/MainWindow.ComponentSystem.cs

@@ -398,10 +398,12 @@ public partial class MainWindow
         _clockDisplayFormat = snapshot.ClockDisplayFormat == "HourMinute"
             ? ClockDisplayFormat.HourMinute
             : ClockDisplayFormat.HourMinuteSecond;
+        _statusBarClockTransparentBackground = snapshot.StatusBarClockTransparentBackground;
 
         if (ClockWidget is not null)
         {
             ClockWidget.SetDisplayFormat(_clockDisplayFormat);
+            ClockWidget.SetTransparentBackground(_statusBarClockTransparentBackground);
         }
     }
 
@@ -413,6 +415,7 @@ public partial class MainWindow
         if (ClockWidget is not null)
         {
             ClockWidget.IsVisible = showClock;
+            ClockWidget.SetTransparentBackground(_statusBarClockTransparentBackground);
             if (showClock)
             {
                 ClockWidget.SetDisplayFormat(_clockDisplayFormat);
@@ -964,6 +967,7 @@ public partial class MainWindow
         DisposeComponentIfNeeded(host);
         contentHost.Child = component;
         ApplyDesktopEditStateToHost(host, _isComponentLibraryOpen);
+        InvalidateDesktopPageAwareComponentContextCache();
         UpdateDesktopPageAwareComponentContext();
         if (_selectedDesktopComponentHost == host)
         {
@@ -1102,6 +1106,7 @@ public partial class MainWindow
 
         ClearTimeZoneServiceBindings(pageGrid.Children.OfType<Control>().ToList());
         pageGrid.Children.Clear();
+        InvalidateDesktopPageAwareComponentContextCache();
 
         var maxColumns = pageGrid.ColumnDefinitions.Count;
         var maxRows = pageGrid.RowDefinitions.Count;
@@ -1204,6 +1209,7 @@ public partial class MainWindow
         pageGrid.Children.Add(host);
 
         _desktopComponentPlacements.Add(placement);
+        InvalidateDesktopPageAwareComponentContextCache();
         UpdateDesktopPageAwareComponentContext();
         PersistSettings();
 
@@ -1577,14 +1583,86 @@ public partial class MainWindow
         }
     }
 
+    private void InvalidateDesktopPageAwareComponentContextCache()
+    {
+        _desktopPageContextInitialized = false;
+        _desktopPageContextActiveMask = 0;
+    }
+
+    private int BuildDesktopPageAwareComponentActiveMask()
+    {
+        if (_isSettingsOpen)
+        {
+            return 0;
+        }
+
+        var activeMask = 0;
+        if (_desktopSurfacePageWidth > 1 &&
+            _desktopPagesHostTransform is not null &&
+            (_isDesktopSwipeActive ||
+             _desktopPageContextSettlingSourceIndex is not null ||
+             _desktopPageContextSettlingTargetIndex is not null))
+        {
+            var viewportLeft = -_desktopPagesHostTransform.X;
+            var viewportRight = viewportLeft + _desktopSurfacePageWidth;
+            for (var pageIndex = 0; pageIndex < _desktopPageCount; pageIndex++)
+            {
+                var pageLeft = pageIndex * _desktopSurfacePageWidth;
+                var pageRight = pageLeft + _desktopSurfacePageWidth;
+                if (pageRight > viewportLeft + 0.5d && pageLeft < viewportRight - 0.5d)
+                {
+                    activeMask |= 1 << pageIndex;
+                }
+            }
+        }
+
+        if (_currentDesktopSurfaceIndex >= 0 && _currentDesktopSurfaceIndex < _desktopPageCount)
+        {
+            activeMask |= 1 << _currentDesktopSurfaceIndex;
+        }
+
+        if (_desktopPageContextSettlingSourceIndex is int sourceIndex &&
+            sourceIndex >= 0 &&
+            sourceIndex < _desktopPageCount)
+        {
+            activeMask |= 1 << sourceIndex;
+        }
+
+        if (_desktopPageContextSettlingTargetIndex is int targetIndex &&
+            targetIndex >= 0 &&
+            targetIndex < _desktopPageCount)
+        {
+            activeMask |= 1 << targetIndex;
+        }
+
+        return activeMask;
+    }
+
     private void UpdateDesktopPageAwareComponentContext()
     {
-        var activeDesktopPageIndex = _isSettingsOpen ? -1 : _currentDesktopSurfaceIndex;
         var isEditMode = _isComponentLibraryOpen || _isSettingsOpen;
+        var activeMask = BuildDesktopPageAwareComponentActiveMask();
+        var pageUpdateMask = !_desktopPageContextInitialized || isEditMode != _desktopPageContextEditMode
+            ? _desktopPageComponentGrids.Keys.Aggregate(0, (mask, pageIndex) => mask | (1 << pageIndex))
+            : activeMask ^ _desktopPageContextActiveMask;
+
+        if (_desktopPageContextInitialized &&
+            pageUpdateMask == 0 &&
+            isEditMode == _desktopPageContextEditMode &&
+            activeMask == _desktopPageContextActiveMask)
+        {
+            return;
+        }
 
         foreach (var pair in _desktopPageComponentGrids)
         {
-            var isOnActivePage = pair.Key == activeDesktopPageIndex;
+            var pageBit = 1 << pair.Key;
+            if ((pageUpdateMask & pageBit) == 0)
+            {
+                continue;
+            }
+
+            var isOnActivePage = (activeMask & pageBit) != 0;
             foreach (var host in pair.Value.Children.OfType<Border>())
             {
                 if (!host.Classes.Contains(DesktopComponentHostClass))
@@ -1598,6 +1676,10 @@ public partial class MainWindow
                 }
             }
         }
+
+        _desktopPageContextInitialized = true;
+        _desktopPageContextEditMode = isEditMode;
+        _desktopPageContextActiveMask = activeMask;
     }
 
     private static void ApplyDesktopPageContext(Control root, bool isOnActivePage, bool isEditMode)
@@ -2702,6 +2784,11 @@ public partial class MainWindow
             return Symbol.Apps;
         }
 
+        if (string.Equals(categoryId, "File", StringComparison.OrdinalIgnoreCase))
+        {
+            return Symbol.Folder;
+        }
+
         return Symbol.Apps;
     }
 
@@ -2747,6 +2834,11 @@ public partial class MainWindow
             return L("component_category.study", "Study");
         }
 
+        if (string.Equals(categoryId, "File", StringComparison.OrdinalIgnoreCase))
+        {
+            return L("component_category.file", "File");
+        }
+
         return categoryId;
     }
 

LanMountainDesktop/Views/MainWindow.DesktopPaging.cs

@@ -5,6 +5,7 @@ using System.IO;
 using System.Linq;
 using System.Threading.Tasks;
 using Avalonia;
+using Avalonia.Animation;
 using Avalonia.Controls;
 using Avalonia.Input;
 using Avalonia.Interactivity;
@@ -16,6 +17,7 @@ using Avalonia.VisualTree;
 using FluentAvalonia.UI.Controls;
 using LanMountainDesktop.Models;
 using LanMountainDesktop.Services;
+using LanMountainDesktop.Theme;
 
 namespace LanMountainDesktop.Views;
 
@@ -54,6 +56,8 @@ public partial class MainWindow
     private int _currentDesktopSurfaceIndex;
     private double _desktopSurfacePageWidth;
     private TranslateTransform? _desktopPagesHostTransform;
+    private Transitions? _desktopPagesHostSnapTransitions;
+    private bool _desktopPagesHostTransitionsSuspended;
     private bool _isDesktopSwipeActive;
     private bool _isDesktopSwipeDirectionLocked;
     private Point _desktopSwipeStartPoint;
@@ -62,6 +66,12 @@ public partial class MainWindow
     private long _desktopSwipeLastTimestamp;
     private double _desktopSwipeVelocityX;
     private double _desktopSwipeBaseOffset;
+    private bool _desktopPageContextInitialized;
+    private bool _desktopPageContextEditMode;
+    private int _desktopPageContextActiveMask;
+    private int? _desktopPageContextSettlingSourceIndex;
+    private int? _desktopPageContextSettlingTargetIndex;
+    private int _desktopPageContextSettleRevision;
 
     private int LauncherSurfaceIndex => Math.Max(MinDesktopPageCount, _desktopPageCount);
 
@@ -164,6 +174,15 @@ public partial class MainWindow
             DesktopPagesHost.RenderTransform = _desktopPagesHostTransform;
         }
 
+        if (_desktopPagesHostTransitionsSuspended)
+        {
+            _desktopPagesHostTransform.Transitions = null;
+        }
+        else
+        {
+            _desktopPagesHostSnapTransitions ??= _desktopPagesHostTransform.Transitions;
+        }
+
         var viewportRow = gridMetrics.RowCount > 2 ? 1 : 0;
         var viewportRowSpan = gridMetrics.RowCount > 2 ? gridMetrics.RowCount - 2 : 1;
         var pageWidth = Math.Max(1, gridMetrics.GridWidthPx);
@@ -200,6 +219,7 @@ public partial class MainWindow
         DesktopPagesContainer.Width = pageWidth * _desktopPageCount;
         DesktopPagesContainer.Height = pageHeight;
         _desktopPageComponentGrids.Clear();
+        InvalidateDesktopPageAwareComponentContextCache();
         for (var index = 0; index < _desktopPageCount; index++)
         {
             DesktopPagesContainer.ColumnDefinitions.Add(new ColumnDefinition(new GridLength(pageWidth, GridUnitType.Pixel)));
@@ -354,6 +374,88 @@ public partial class MainWindow
         UpdateDesktopPageAwareComponentContext();
     }
 
+    private void SetDesktopPagesHostSnapAnimationEnabled(bool enabled)
+    {
+        if (_desktopPagesHostTransform is null)
+        {
+            return;
+        }
+
+        if (enabled)
+        {
+            if (!_desktopPagesHostTransitionsSuspended)
+            {
+                return;
+            }
+
+            _desktopPagesHostTransform.Transitions = _desktopPagesHostSnapTransitions;
+            _desktopPagesHostTransitionsSuspended = false;
+            return;
+        }
+
+        if (_desktopPagesHostTransitionsSuspended)
+        {
+            return;
+        }
+
+        _desktopPagesHostSnapTransitions ??= _desktopPagesHostTransform.Transitions;
+        _desktopPagesHostTransform.Transitions = null;
+        _desktopPagesHostTransitionsSuspended = true;
+    }
+
+    private void ClearDesktopPageContextSettle(bool refreshContext)
+    {
+        _desktopPageContextSettleRevision++;
+        _desktopPageContextSettlingSourceIndex = null;
+        _desktopPageContextSettlingTargetIndex = null;
+
+        if (refreshContext)
+        {
+            UpdateDesktopPageAwareComponentContext();
+        }
+    }
+
+    private void BeginDesktopPageContextSettle(int previousIndex, int targetIndex)
+    {
+        var sourceIndex = previousIndex >= 0 && previousIndex < _desktopPageCount
+            ? previousIndex
+            : (int?)null;
+        var destinationIndex = targetIndex >= 0 && targetIndex < _desktopPageCount
+            ? targetIndex
+            : (int?)null;
+
+        if (sourceIndex == destinationIndex && destinationIndex is not null)
+        {
+            ClearDesktopPageContextSettle(refreshContext: false);
+            return;
+        }
+
+        if (sourceIndex is null && destinationIndex is null)
+        {
+            ClearDesktopPageContextSettle(refreshContext: false);
+            return;
+        }
+
+        _desktopPageContextSettleRevision++;
+        var settleRevision = _desktopPageContextSettleRevision;
+        _desktopPageContextSettlingSourceIndex = sourceIndex;
+        _desktopPageContextSettlingTargetIndex = destinationIndex;
+
+        DispatcherTimer.RunOnce(
+            () =>
+            {
+                if (settleRevision != _desktopPageContextSettleRevision)
+                {
+                    return;
+                }
+
+                _desktopPageContextSettlingSourceIndex = null;
+                _desktopPageContextSettlingTargetIndex = null;
+                UpdateDesktopPageAwareComponentContext();
+            },
+            FluttermotionToken.Page + TimeSpan.FromMilliseconds(36));
+    }
+
     private void MoveSurfaceBy(int delta)
     {
         if (delta == 0)
@@ -373,9 +475,11 @@ public partial class MainWindow
             return;
         }
 
+        var previousIndex = _currentDesktopSurfaceIndex;
         _currentDesktopSurfaceIndex = target;
+        BeginDesktopPageContextSettle(previousIndex, target);
         ApplyDesktopSurfaceOffset();
-        PersistSettings();
+        SchedulePersistSettings(delayMs: Math.Max(280, (int)FluttermotionToken.Page.TotalMilliseconds + 80));
     }
 
     private bool CanSwipeDesktopSurface()
@@ -426,6 +530,7 @@ public partial class MainWindow
             return;
         }
 
+        ClearDesktopPageContextSettle(refreshContext: false);
         _isDesktopSwipeActive = true;
         _isDesktopSwipeDirectionLocked = false;
         _desktopSwipeStartPoint = pointerInViewport;
@@ -603,6 +708,7 @@ public partial class MainWindow
             }
 
             _isDesktopSwipeDirectionLocked = true;
+            SetDesktopPagesHostSnapAnimationEnabled(enabled: false);
             if (e.Pointer.Captured != DesktopPagesViewport)
             {
                 e.Pointer.Capture(DesktopPagesViewport);
@@ -621,6 +727,7 @@ public partial class MainWindow
         }
 
         _desktopPagesHostTransform.X = tentative;
+        UpdateDesktopPageAwareComponentContext();
         e.Handled = true;
     }
 
@@ -656,6 +763,7 @@ public partial class MainWindow
         _desktopSwipeLastTimestamp = 0;
         if (wasDirectionLocked)
         {
+            SetDesktopPagesHostSnapAnimationEnabled(enabled: true);
             ApplyDesktopSurfaceOffset();
         }
     }
@@ -682,6 +790,8 @@ public partial class MainWindow
             return false;
         }
 
+        SetDesktopPagesHostSnapAnimationEnabled(enabled: true);
+
         var deltaX = _desktopSwipeCurrentPoint.X - _desktopSwipeStartPoint.X;
         var deltaY = _desktopSwipeCurrentPoint.Y - _desktopSwipeStartPoint.Y;
         var absDeltaX = Math.Abs(deltaX);

LanMountainDesktop/Views/MainWindow.SettingsHardCut.Stubs.cs

@@ -3,8 +3,9 @@ using System.Globalization;
 using System.IO;
 using System.Linq;
 using System.Threading.Tasks;
-using Avalonia;
 using Avalonia.Controls;
+using Avalonia.Input;
+using Avalonia;
 using Avalonia.Interactivity;
 using Avalonia.Media;
 using Avalonia.Media.Imaging;
@@ -16,8 +17,6 @@ using LanMountainDesktop.PluginSdk;
 using LanMountainDesktop.Services;
 using LanMountainDesktop.Theme;
 using LanMountainDesktop.Views.Components;
-using LibVLCSharp.Shared;
-using LibVLCSharp.Avalonia;
 
 namespace LanMountainDesktop.Views;
 
@@ -34,6 +33,11 @@ public partial class MainWindow
     {
         _ = sender;
 
+        if (_suppressOwnSettingsReloadCount > 0)
+        {
+            return;
+        }
+
         if (e.Scope == SettingsScope.App && e.ChangedKeys is { Count: > 0 })
         {
             var changedKeys = e.ChangedKeys.ToArray();
@@ -99,7 +103,11 @@ public partial class MainWindow
     private void ApplyLocalization()
     {
         Title = L("app.title", "LanMountainDesktop");
-        BackToWindowsTextBlock.Text = L("button.back_to_windows", "Back to Windows");
+        var platformName = OperatingSystem.IsWindows() ? "Windows" 
+            : OperatingSystem.IsMacOS() ? "macOS" 
+            : "Linux";
+        BackToWindowsTextBlock.Text = Lf("button.back_to_platform", "Back to {0}", platformName);
+        ToolTip.SetTip(BackToWindowsButton, Lf("tooltip.back_to_platform", "Back to {0}", platformName));
         ComponentLibraryTitleTextBlock.Text = L("component_library.title", "Widgets");
         LauncherTitleTextBlock.Text = L("launcher.title", "App Launcher");
         LauncherSubtitleTextBlock.Text = OperatingSystem.IsLinux()
@@ -213,7 +221,6 @@ public partial class MainWindow
         _wallpaperType = string.IsNullOrWhiteSpace(type) ? "Image" : type.Trim();
         _wallpaperPlacement = WallpaperImageBrushFactory.NormalizePlacement(placement);
         _wallpaperSolidColor = TryParseColor(color, out var parsedColor) ? parsedColor : null;
-        _wallpaperVideoPath = null;
         _wallpaperDisplayState = WallpaperDisplayState.NoWallpaperConfigured;
 
         _wallpaperBitmap?.Dispose();
@@ -235,17 +242,6 @@ public partial class MainWindow
         }
 
         var extension = Path.GetExtension(_wallpaperPath);
-        var requestedTypeIsVideo = string.Equals(_wallpaperType, "Video", StringComparison.OrdinalIgnoreCase);
-        if (SupportedVideoExtensions.Contains(extension) || requestedTypeIsVideo)
-        {
-            _wallpaperMediaType = WallpaperMediaType.Video;
-            _wallpaperVideoPath = _wallpaperPath;
-            _wallpaperDisplayState = File.Exists(_wallpaperPath)
-                ? WallpaperDisplayState.CurrentValidWallpaper
-                : WallpaperDisplayState.TemporarilyUnavailable;
-            return;
-        }
-
         if (!SupportedImageExtensions.Contains(extension))
         {
             _wallpaperMediaType = WallpaperMediaType.Image;
@@ -285,7 +281,6 @@ public partial class MainWindow
         if (_wallpaperMediaType == WallpaperMediaType.SolidColor && _wallpaperSolidColor.HasValue)
         {
             DesktopWallpaperLayer.Background = new SolidColorBrush(_wallpaperSolidColor.Value);
-            ApplyVideoWallpaperPosterVisibility(showPoster: false);
             return;
         }
 
@@ -296,7 +291,6 @@ public partial class MainWindow
             DesktopWallpaperLayer.Background = _defaultDesktopBackground ?? CreateNeutralWallpaperFallbackBrush();
             DesktopWallpaperImageLayer.Background = WallpaperImageBrushFactory.Create(_wallpaperBitmap, _wallpaperPlacement);
             DesktopWallpaperImageLayer.IsVisible = true;
-            ApplyVideoWallpaperPosterVisibility(showPoster: false);
             return;
         }
 
@@ -308,92 +302,17 @@ public partial class MainWindow
             DesktopWallpaperLayer.Background = _defaultDesktopBackground ?? CreateNeutralWallpaperFallbackBrush();
             DesktopWallpaperImageLayer.Background = WallpaperImageBrushFactory.Create(_lastValidWallpaperBitmap, _wallpaperPlacement);
             DesktopWallpaperImageLayer.IsVisible = true;
-            ApplyVideoWallpaperPosterVisibility(showPoster: false);
             return;
         }
 
         DesktopWallpaperLayer.Background = _defaultDesktopBackground ?? CreateNeutralWallpaperFallbackBrush();
-        ApplyVideoWallpaperPosterVisibility(
-            showPoster: _wallpaperMediaType == WallpaperMediaType.Video && _videoWallpaperPosterBitmap is not null);
     }
 
     private void UpdateWallpaperDisplay()
     {
-        if (_wallpaperMediaType == WallpaperMediaType.Video)
-        {
-            if (!string.IsNullOrWhiteSpace(_wallpaperVideoPath))
-            {
-                StartVideoWallpaper(_wallpaperVideoPath);
-            }
-        }
-        else
-        {
-            StopVideoWallpaper();
-        }
-
         ApplyWallpaperBrush();
     }
 
-    private void StartVideoWallpaper(string videoPath)
-    {
-        if (string.IsNullOrWhiteSpace(videoPath) || !File.Exists(videoPath))
-        {
-            ApplyVideoWallpaperPosterVisibility(showPoster: _videoWallpaperPosterBitmap is not null);
-            return;
-        }
-
-        try
-        {
-            _libVlc ??= new LibVLC();
-            _videoWallpaperPlayer ??= new MediaPlayer(_libVlc);
-
-            if (_videoWallpaperMedia?.Mrl != videoPath)
-            {
-                _videoWallpaperMedia?.Dispose();
-                _videoWallpaperMedia = new Media(_libVlc, new Uri(videoPath));
-                _videoWallpaperPlayer.Media = _videoWallpaperMedia;
-            }
-
-            if (DesktopVideoWallpaperView is { } videoView)
-            {
-                videoView.MediaPlayer = _videoWallpaperPlayer;
-                videoView.IsVisible = true;
-            }
-
-            if (!string.Equals(_videoWallpaperPosterPath, videoPath, StringComparison.OrdinalIgnoreCase))
-            {
-                ApplyVideoWallpaperPosterVisibility(showPoster: false);
-            }
-            else
-            {
-                ApplyVideoWallpaperPosterVisibility(showPoster: _videoWallpaperPosterBitmap is not null);
-            }
-
-            if (!_videoWallpaperPlayer.IsPlaying)
-            {
-                _videoWallpaperPlayer.Play();
-            }
-
-            TryCaptureVideoWallpaperPosterFrame(videoPath);
-        }
-        catch
-        {
-            ApplyVideoWallpaperPosterVisibility(showPoster: _videoWallpaperPosterBitmap is not null);
-        }
-    }
-
-    private void StopVideoWallpaper()
-    {
-        if (DesktopVideoWallpaperView is { } videoView)
-        {
-            videoView.IsVisible = false;
-        }
-
-        _videoWallpaperPlayer?.Stop();
-        _wallpaperVideoPath = null;
-        ApplyVideoWallpaperPosterVisibility(showPoster: false);
-    }
-
     private double CalculateCurrentBackgroundLuminance()
     {
         var brush = DesktopWallpaperLayer.Background;
@@ -473,6 +392,7 @@ public partial class MainWindow
 
     private void PersistSettings()
     {
+        _persistSettingsRevision++;
         if (_suppressSettingsPersistence)
         {
             return;
@@ -480,6 +400,8 @@ public partial class MainWindow
 
         try
         {
+            // Saving our own state should not trigger a full external reload cycle.
+            _suppressOwnSettingsReloadCount++;
             _settingsService.SaveSnapshot(SettingsScope.App, BuildAppSettingsSnapshot());
             _componentLayoutStore.SaveLayout(BuildDesktopLayoutSettingsSnapshot());
             _settingsService.SaveSnapshot(SettingsScope.Launcher, BuildLauncherSettingsSnapshot());
@@ -488,11 +410,29 @@ public partial class MainWindow
         {
             AppLogger.Warn("SettingsRuntime", "Failed to persist settings.", ex);
         }
+        finally
+        {
+            if (_suppressOwnSettingsReloadCount > 0)
+            {
+                _suppressOwnSettingsReloadCount--;
+            }
+        }
     }
 
     private void SchedulePersistSettings(int delayMs = 200)
     {
-        DispatcherTimer.RunOnce(PersistSettings, TimeSpan.FromMilliseconds(Math.Max(0, delayMs)));
+        var revision = ++_persistSettingsRevision;
+        DispatcherTimer.RunOnce(
+            () =>
+            {
+                if (revision != _persistSettingsRevision)
+                {
+                    return;
+                }
+
+                PersistSettings();
+            },
+            TimeSpan.FromMilliseconds(Math.Max(0, delayMs)));
     }
 
     internal void ReloadFromPersistedSettings()
@@ -564,6 +504,7 @@ public partial class MainWindow
         var latestWeatherState = _weatherSettingsService.Get();
         var latestUpdateState = _updateSettingsService.Get();
         var latestThemeState = _themeSettingsService.Get();
+        var latestPrivacyState = _settingsFacade.Privacy.Get();
         return new AppSettingsSnapshot
         {
             GridShortSideCells = _targetShortSideCells,
@@ -595,7 +536,8 @@ public partial class MainWindow
             WeatherNoTlsRequests = latestWeatherState.NoTlsRequests,
             AutoStartWithWindows = _autoStartWithWindows,
             AppRenderMode = _selectedAppRenderMode,
-            AutoCheckUpdates = latestUpdateState.AutoCheckUpdates,
+            UploadAnonymousCrashData = latestPrivacyState.UploadAnonymousCrashData,
+            UploadAnonymousUsageData = latestPrivacyState.UploadAnonymousUsageData,
             IncludePrereleaseUpdates = latestUpdateState.IncludePrereleaseUpdates,
             UpdateChannel = latestUpdateState.UpdateChannel,
             UpdateMode = latestUpdateState.UpdateMode,
@@ -610,6 +552,7 @@ public partial class MainWindow
             EnableDynamicTaskbarActions = _enableDynamicTaskbarActions,
             TaskbarLayoutMode = _taskbarLayoutMode,
             ClockDisplayFormat = _clockDisplayFormat == ClockDisplayFormat.HourMinute ? "HourMinute" : "HourMinuteSecond",
+            StatusBarClockTransparentBackground = _statusBarClockTransparentBackground,
             StatusBarSpacingMode = _statusBarSpacingMode,
             StatusBarCustomSpacingPercent = _statusBarCustomSpacingPercent
         };
@@ -644,112 +587,6 @@ public partial class MainWindow
         }
     }
 
-    private void ApplyVideoWallpaperPosterVisibility(bool showPoster)
-    {
-        if (DesktopVideoWallpaperImage is not { } posterImage)
-        {
-            return;
-        }
-
-        if (!showPoster ||
-            _videoWallpaperPosterBitmap is null ||
-            !string.Equals(_videoWallpaperPosterPath, _wallpaperVideoPath, StringComparison.OrdinalIgnoreCase))
-        {
-            posterImage.IsVisible = false;
-            return;
-        }
-
-        posterImage.Source = _videoWallpaperPosterBitmap;
-        posterImage.IsVisible = true;
-    }
-
-    private void TryCaptureVideoWallpaperPosterFrame(string videoPath)
-    {
-        if (_videoWallpaperPlayer is null || string.IsNullOrWhiteSpace(videoPath))
-        {
-            return;
-        }
-
-        _ = Task.Run(async () =>
-        {
-            var snapshotPath = Path.Combine(
-                Path.GetTempPath(),
-                $"lanmountaindesktop-wallpaper-poster-{Guid.NewGuid():N}.png");
-
-            try
-            {
-                for (var attempt = 0; attempt < 12; attempt++)
-                {
-                    await Task.Delay(250).ConfigureAwait(false);
-
-                    if (_wallpaperMediaType != WallpaperMediaType.Video ||
-                        !string.Equals(_wallpaperVideoPath, videoPath, StringComparison.OrdinalIgnoreCase) ||
-                        _videoWallpaperPlayer is null)
-                    {
-                        return;
-                    }
-
-                    if (!_videoWallpaperPlayer.TakeSnapshot(0, snapshotPath, 640, 360))
-                    {
-                        continue;
-                    }
-
-                    if (!File.Exists(snapshotPath))
-                    {
-                        continue;
-                    }
-
-                    var fileInfo = new FileInfo(snapshotPath);
-                    if (fileInfo.Length <= 0)
-                    {
-                        continue;
-                    }
-
-                    Bitmap posterBitmap;
-                    await using (var stream = File.OpenRead(snapshotPath))
-                    {
-                        posterBitmap = new Bitmap(stream);
-                    }
-
-                    await Dispatcher.UIThread.InvokeAsync(() =>
-                    {
-                        if (_wallpaperMediaType != WallpaperMediaType.Video ||
-                            !string.Equals(_wallpaperVideoPath, videoPath, StringComparison.OrdinalIgnoreCase))
-                        {
-                            posterBitmap.Dispose();
-                            return;
-                        }
-
-                        _videoWallpaperPosterBitmap?.Dispose();
-                        _videoWallpaperPosterBitmap = posterBitmap;
-                        _videoWallpaperPosterPath = videoPath;
-                        ApplyVideoWallpaperPosterVisibility(showPoster: true);
-                    });
-
-                    return;
-                }
-            }
-            catch
-            {
-                // Best effort poster capture only.
-            }
-            finally
-            {
-                try
-                {
-                    if (File.Exists(snapshotPath))
-                    {
-                        File.Delete(snapshotPath);
-                    }
-                }
-                catch
-                {
-                    // Best effort cleanup only.
-                }
-            }
-        });
-    }
-
     private DesktopLayoutSettingsSnapshot BuildDesktopLayoutSettingsSnapshot()
     {
         return new DesktopLayoutSettingsSnapshot

LanMountainDesktop/Views/MainWindow.axaml

@@ -1,4 +1,4 @@
-<Window xmlns="https://github.com/avaloniaui"
+<Window xmlns="https://github.com/avaloniaui"
         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
         xmlns:vm="using:LanMountainDesktop.ViewModels"
         xmlns:ui="using:FluentAvalonia.UI.Controls"
@@ -6,7 +6,7 @@
         xmlns:ic="using:FluentIcons.Avalonia.Fluent"
         xmlns:mi="clr-namespace:Material.Icons.Avalonia;assembly=Material.Icons.Avalonia"
         xmlns:comp="using:LanMountainDesktop.Views.Components"
-        xmlns:vlc="clr-namespace:LibVLCSharp.Avalonia;assembly=LibVLCSharp.Avalonia"
+
         xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
         xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
         mc:Ignorable="d"
@@ -123,18 +123,7 @@
                             VerticalAlignment="Stretch"
                             Background="Transparent" />
 
-                    <Image x:Name="DesktopVideoWallpaperImage"
-                           IsVisible="False"
-                           IsHitTestVisible="False"
-                           Stretch="UniformToFill"
-                           HorizontalAlignment="Stretch"
-                           VerticalAlignment="Stretch" />
 
-                    <vlc:VideoView x:Name="DesktopVideoWallpaperView"
-                                   IsVisible="False"
-                                   IsHitTestVisible="False"
-                                   HorizontalAlignment="Stretch"
-                                   VerticalAlignment="Stretch" />
 
                     <Grid x:Name="DesktopGrid"
                           HorizontalAlignment="Center"
@@ -156,7 +145,9 @@
                                         <TranslateTransform>
                                             <TranslateTransform.Transitions>
                                                 <Transitions>
-                                                    <DoubleTransition Property="X" Duration="{StaticResource FluttermotionToken.Duration.Page}" />
+                                                    <DoubleTransition Property="X"
+                                                                      Duration="{StaticResource FluttermotionToken.Duration.Page}"
+                                                                      Easing="0.22,1,0.36,1" />
                                                 </Transitions>
                                             </TranslateTransform.Transitions>
                                         </TranslateTransform>
@@ -167,7 +158,7 @@
 
                                     <Border x:Name="LauncherPagePanel"
                                             Grid.Column="1"
-                                            Classes="glass-panel"
+                                            Classes="surface-translucent-panel"
                                             ClipToBounds="False"
                                             CornerRadius="36"
                                             Padding="18">
@@ -175,11 +166,9 @@
                                             <StackPanel Spacing="4">
                                                 <TextBlock x:Name="LauncherTitleTextBlock"
                                                            FontSize="24"
-                                                           FontWeight="SemiBold"
-                                                           Text="App Launcher" />
+                                                           FontWeight="SemiBold" />
                                                 <TextBlock x:Name="LauncherSubtitleTextBlock"
-                                                           Foreground="{DynamicResource AdaptiveTextSecondaryBrush}"
-                                                           Text="Apps and folders from Windows Start Menu." />
+                                                           Foreground="{DynamicResource AdaptiveTextSecondaryBrush}" />
                                             </StackPanel>
 
                                             <Grid Grid.Row="1"
@@ -197,7 +186,7 @@
                                                       Opacity="{DynamicResource AdaptiveGlassOverlayOpacity}"
                                                       PointerPressed="OnLauncherFolderOverlayPointerPressed">
                                                     <Border x:Name="LauncherFolderPanel"
-                                                            Classes="mica-strong"
+                                                            Classes="surface-solid-strong"
                                                             HorizontalAlignment="Center"
                                                             VerticalAlignment="Center"
                                                             Margin="52"
@@ -225,8 +214,7 @@
                                                                            Grid.Column="1"
                                                                            HorizontalAlignment="Center"
                                                                            VerticalAlignment="Center"
-                                                                           FontWeight="SemiBold"
-                                                                           Text="Folder" />
+                                                                           FontWeight="SemiBold" />
                                                                 <Button x:Name="LauncherFolderCloseButton"
                                                                         Grid.Column="2"
                                                                         Width="38"
@@ -275,7 +263,7 @@
                         </Border>
 
                         <Border x:Name="BottomTaskbarContainer"
-                                Classes="glass-island"
+                                Classes="surface-translucent-island"
                                 Grid.Row="0"
                                 Grid.Column="0"
                                 Grid.ColumnSpan="1"
@@ -299,8 +287,7 @@
                                                 Background="Transparent"
                                                 BorderThickness="0"
                                                 Foreground="{DynamicResource AdaptiveTextPrimaryBrush}"
-                                                Click="OnMinimizeClick"
-                                                ToolTip.Tip="&#22238;&#21040;Windows">
+                                                Click="OnMinimizeClick">
                                             <StackPanel Orientation="Horizontal"
                                                         HorizontalAlignment="Center"
                                                         VerticalAlignment="Center"
@@ -309,8 +296,7 @@
                                                                Icon="Window"
                                                                IconVariant="Regular" />
                                                 <TextBlock x:Name="BackToWindowsTextBlock"
-                                                           Foreground="{DynamicResource AdaptiveTextPrimaryBrush}"
-                                                           Text="&#22238;&#21040;Windows" />
+                                                           Foreground="{DynamicResource AdaptiveTextPrimaryBrush}" />
                                             </StackPanel>
                                         </Button>
                                     </Grid>
@@ -445,7 +431,7 @@
         <Border x:Name="ComponentLibraryWindow"
                 IsVisible="False"
                 Opacity="0"
-                Classes="glass-strong"
+                Classes="surface-translucent-strong"
                 HorizontalAlignment="Center"
                 VerticalAlignment="Bottom"
                 Width="620"
@@ -490,7 +476,7 @@
                 </Grid>
 
                 <Border Grid.Row="1"
-                        Classes="glass-panel"
+                        Classes="surface-translucent-panel"
                         CornerRadius="12"
                         Padding="14">
                     <Grid>

LanMountainDesktop/Views/MainWindow.axaml.cs

@@ -25,7 +25,7 @@ using LanMountainDesktop.Services;
 using LanMountainDesktop.Services.Settings;
 using LanMountainDesktop.Theme;
 using LanMountainDesktop.Views.Components;
-using LibVLCSharp.Shared;
+
 
 namespace LanMountainDesktop.Views;
 
@@ -35,7 +35,6 @@ public partial class MainWindow : Window, ISettingsWindowAnchorProvider
     {
         None,
         Image,
-        Video,
         SolidColor
     }
 
@@ -65,10 +64,6 @@ public partial class MainWindow : Window, ISettingsWindowAnchorProvider
     {
         ".png", ".jpg", ".jpeg", ".bmp", ".gif", ".webp"
     };
-    private static readonly HashSet<string> SupportedVideoExtensions = new(StringComparer.OrdinalIgnoreCase)
-    {
-        ".mp4", ".mkv", ".webm", ".avi", ".mov", ".m4v"
-    };
     private static readonly TaskbarActionId[] DefaultPinnedTaskbarActions =
     [
         TaskbarActionId.MinimizeToWindows
@@ -120,30 +115,11 @@ public partial class MainWindow : Window, ISettingsWindowAnchorProvider
     private Bitmap? _wallpaperBitmap;
     private Bitmap? _lastValidWallpaperBitmap;
     private string? _lastValidWallpaperPath;
-    private Bitmap? _videoWallpaperPosterBitmap;
-    private string? _videoWallpaperPosterPath;
     private WallpaperMediaType _wallpaperMediaType;
     private WallpaperDisplayState _wallpaperDisplayState = WallpaperDisplayState.NoWallpaperConfigured;
     private string _wallpaperPlacement = WallpaperImageBrushFactory.Fill;
-    private string? _wallpaperVideoPath;
     private string _wallpaperType = "Image";
     private Color? _wallpaperSolidColor;
-    private LibVLC? _libVlc;
-    private MediaPlayer? _videoWallpaperPlayer;
-    private Media? _videoWallpaperMedia;
-    private readonly object _desktopVideoFrameSync = new();
-    private MediaPlayer.LibVLCVideoLockCb? _desktopVideoLockCallback;
-    private MediaPlayer.LibVLCVideoUnlockCb? _desktopVideoUnlockCallback;
-    private MediaPlayer.LibVLCVideoDisplayCb? _desktopVideoDisplayCallback;
-    private DispatcherTimer? _desktopVideoFrameRefreshTimer;
-    private IntPtr _desktopVideoFrameBufferPtr;
-    private byte[]? _desktopVideoStagingBuffer;
-    private WriteableBitmap? _desktopVideoBitmap;
-    private int _desktopVideoFrameWidth;
-    private int _desktopVideoFrameHeight;
-    private int _desktopVideoFramePitch;
-    private int _desktopVideoFrameBufferSize;
-    private int _desktopVideoFrameDirtyFlag;
     private string? _wallpaperPath;
     private string _wallpaperStatus = "Current background uses solid color.";
     private IReadOnlyList<Color> _recommendedColors = Array.Empty<Color>();
@@ -155,6 +131,7 @@ public partial class MainWindow : Window, ISettingsWindowAnchorProvider
     private string _gridSpacingPreset = "Relaxed";
     private string _statusBarSpacingMode = "Relaxed";
     private int _statusBarCustomSpacingPercent = 12;
+    private bool _statusBarClockTransparentBackground;
     private int _desktopEdgeInsetPercent = DefaultEdgeInsetPercent;
     private string _taskbarLayoutMode = TaskbarLayoutBottomFullRowMacStyle;
     private string _languageCode = "zh-CN";
@@ -177,6 +154,8 @@ public partial class MainWindow : Window, ISettingsWindowAnchorProvider
     private bool _isWeatherPreviewInProgress;
     private ClockDisplayFormat _clockDisplayFormat = ClockDisplayFormat.HourMinuteSecond;
     private bool _externalSettingsReloadPending;
+    private int _persistSettingsRevision;
+    private int _suppressOwnSettingsReloadCount;
     private double CurrentDesktopPitch => _currentDesktopCellSize + _currentDesktopCellGap;
 
     public MainWindow()
@@ -333,21 +312,9 @@ public partial class MainWindow : Window, ISettingsWindowAnchorProvider
             _detachedComponentLibraryWindow.Close();
         }
         _detachedComponentLibraryWindow = null;
-        StopVideoWallpaper();
         DisposeLauncherResources();
-        _videoWallpaperMedia?.Dispose();
-        _videoWallpaperMedia = null;
-        _videoWallpaperPlayer?.Dispose();
-        _videoWallpaperPlayer = null;
-        _desktopVideoFrameRefreshTimer?.Stop();
-        _desktopVideoFrameRefreshTimer = null;
-        _videoWallpaperPosterBitmap?.Dispose();
-        _videoWallpaperPosterBitmap = null;
-        _videoWallpaperPosterPath = null;
         _lastValidWallpaperBitmap?.Dispose();
         _lastValidWallpaperBitmap = null;
-        _libVlc?.Dispose();
-        _libVlc = null;
         if (_recommendationInfoService is IDisposable recommendationServiceDisposable)
         {
             recommendationServiceDisposable.Dispose();

LanMountainDesktop/Views/SettingsPages/PluginMarketSettingsPage.axaml

@@ -16,8 +16,11 @@
                 <ui:SettingsExpander.Footer>
                     <Grid ColumnDefinitions="*,Auto"
                           ColumnSpacing="12">
-                        <TextBox Text="{Binding SearchText}"
-                                 Watermark="{Binding SearchPlaceholder}" />
+                        <TextBox x:Name="SearchTextBox"
+                                 Text="{Binding SearchText}"
+                                 Watermark="{Binding SearchPlaceholder}"
+                                 Focusable="True"
+                                 IsTabStop="True" />
                         <Button Grid.Column="1"
                                 Command="{Binding RefreshCommand}"
                                 Content="{Binding RefreshButtonText}" />

LanMountainDesktop/Views/SettingsPages/PrivacyPolicyDrawer.axaml

@@ -0,0 +1,55 @@
+<UserControl xmlns="https://github.com/avaloniaui"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:vm="using:LanMountainDesktop.ViewModels"
+             xmlns:mdxaml="https://github.com/whistyun/Markdown.Avalonia"
+             xmlns:helpers="using:LanMountainDesktop.Helpers"
+             xmlns:fi="using:FluentIcons.Avalonia.Fluent"
+             x:Class="LanMountainDesktop.Views.SettingsPages.PrivacyPolicyDrawer"
+             x:DataType="vm:PrivacyPolicyViewModel">
+    <ScrollViewer VerticalScrollBarVisibility="Auto">
+        <StackPanel Classes="settings-page-container"
+                    Margin="0,0,0,8">
+            <Border Classes="settings-section-card">
+                <StackPanel Spacing="12">
+                    <Grid ColumnDefinitions="Auto,*"
+                          ColumnSpacing="12">
+                        <Border Classes="settings-section-card-icon-host"
+                                Width="48"
+                                Height="48">
+                            <Viewbox Stretch="Uniform">
+                                <fi:SymbolIcon Symbol="Document" />
+                            </Viewbox>
+                        </Border>
+                        
+                        <StackPanel Grid.Column="1"
+                                    Spacing="4"
+                                    VerticalAlignment="Center">
+                            <TextBlock Classes="settings-card-header"
+                                       Margin="0"
+                                       Text="{Binding Title}" />
+                            <TextBlock Classes="settings-item-description"
+                                       Text="{Binding Description}" />
+                        </StackPanel>
+                    </Grid>
+                </StackPanel>
+            </Border>
+
+            <Border Classes="settings-section-card">
+                <StackPanel Spacing="12">
+                    <TextBlock Classes="settings-item-description"
+                               IsVisible="{Binding IsLoading}"
+                               Text="{Binding LoadingText}" />
+                    
+                    <TextBlock Classes="settings-item-description"
+                               IsVisible="{Binding HasError}"
+                               Text="{Binding ErrorText}"
+                               TextWrapping="Wrap" />
+                    
+                    <mdxaml:MarkdownScrollViewer IsVisible="{Binding HasContent}"
+                                                 Markdown="{Binding MarkdownContent}"
+                                                 Engine="{x:Static helpers:PluginMarketMarkdownHelper.Engine}" />
+                </StackPanel>
+            </Border>
+        </StackPanel>
+    </ScrollViewer>
+</UserControl>

LanMountainDesktop/Views/SettingsPages/PrivacyPolicyDrawer.axaml.cs

@@ -0,0 +1,17 @@
+using Avalonia.Controls;
+using LanMountainDesktop.ViewModels;
+
+namespace LanMountainDesktop.Views.SettingsPages;
+
+public partial class PrivacyPolicyDrawer : UserControl
+{
+    public PrivacyPolicyDrawer()
+    {
+        InitializeComponent();
+    }
+
+    public PrivacyPolicyDrawer(PrivacyPolicyViewModel viewModel) : this()
+    {
+        DataContext = viewModel;
+    }
+}

LanMountainDesktop/Views/SettingsPages/PrivacySettingsPage.axaml

@@ -45,10 +45,13 @@
                                    FontSize="12"
                                    Opacity="0.7"
                                    Margin="0,4,0,8" />
-                        <TextBox Text="{Binding DeviceId}"
+                        <TextBox x:Name="DeviceIdTextBox"
+                                 Text="{Binding DeviceId}"
                                  IsReadOnly="True"
                                  FontFamily="Consolas"
-                                 FontSize="12" />
+                                 FontSize="12"
+                                 Focusable="False"
+                                 IsTabStop="False" />
                     </StackPanel>
                     <Button Grid.Column="1"
                             Content="{Binding RefreshDeviceIdText}"
@@ -58,6 +61,28 @@
                             Classes="accent-button" />
                 </Grid>
             </Border>
+
+            <StackPanel Orientation="Horizontal"
+                        Margin="0,16,0,0"
+                        Spacing="4">
+                <TextBlock Text="{Binding PrivacyPolicyHintPrefix}"
+                           FontSize="13"
+                           VerticalAlignment="Center" />
+                <Button Content="{Binding ViewPrivacyPolicyText}"
+                        Command="{Binding ViewPrivacyPolicyCommand}"
+                        Background="Transparent"
+                        BorderThickness="0"
+                        Padding="0"
+                        FontSize="13"
+                        Foreground="{DynamicResource SystemAccentColor}"
+                        Cursor="Hand">
+                    <Button.Styles>
+                        <Style Selector="Button:pointerover /template/ ContentPresenter">
+                            <Setter Property="TextBlock.Foreground" Value="{DynamicResource SystemAccentColorDark1}" />
+                        </Style>
+                    </Button.Styles>
+                </Button>
+            </StackPanel>
         </StackPanel>
     </ScrollViewer>
 </UserControl>

LanMountainDesktop/Views/SettingsPages/PrivacySettingsPage.axaml.cs

@@ -22,9 +22,17 @@ public partial class PrivacySettingsPage : SettingsPageBase
     public PrivacySettingsPage(PrivacySettingsPageViewModel viewModel)
     {
         ViewModel = viewModel;
+        ViewModel.ViewPrivacyPolicyRequested += OnViewPrivacyPolicyRequested;
         DataContext = ViewModel;
         InitializeComponent();
     }
 
     public PrivacySettingsPageViewModel ViewModel { get; }
+
+    private void OnViewPrivacyPolicyRequested()
+    {
+        var privacyPolicyViewModel = new PrivacyPolicyViewModel();
+        var drawer = new PrivacyPolicyDrawer(privacyPolicyViewModel);
+        OpenDrawer(drawer, privacyPolicyViewModel.Title);
+    }
 }

LanMountainDesktop/Views/SettingsPages/StatusBarSettingsPage.axaml

@@ -38,6 +38,20 @@
                         </ComboBox>
                     </Grid>
                 </ui:SettingsExpanderItem>
+                <ui:SettingsExpanderItem>
+                    <Grid ColumnDefinitions="*,Auto"
+                          ColumnSpacing="16">
+                        <StackPanel Spacing="2">
+                            <TextBlock Text="{Binding ClockTransparentBackgroundLabel}" />
+                            <TextBlock Text="{Binding ClockTransparentBackgroundDescription}"
+                                       Opacity="0.75"
+                                       TextWrapping="Wrap" />
+                        </StackPanel>
+                        <ToggleSwitch Grid.Column="1"
+                                      IsChecked="{Binding ClockTransparentBackground}"
+                                      VerticalAlignment="Center" />
+                    </Grid>
+                </ui:SettingsExpanderItem>
             </ui:SettingsExpander>
 
             <Separator Classes="settings-separator" />

LanMountainDesktop/Views/SettingsPages/UpdateSettingsPage.axaml

@@ -21,12 +21,17 @@
             <Setter Property="FontSize" Value="12" />
             <Setter Property="Opacity" Value="0.68" />
             <Setter Property="Foreground" Value="{DynamicResource AdaptiveTextPrimaryBrush}" />
+            <Setter Property="TextWrapping" Value="Wrap" />
+            <Setter Property="MaxWidth" Value="200" />
         </Style>
 
         <Style Selector="TextBlock.update-kv-value">
             <Setter Property="FontSize" Value="14" />
             <Setter Property="FontWeight" Value="SemiBold" />
             <Setter Property="Foreground" Value="{DynamicResource AdaptiveTextPrimaryBrush}" />
+            <Setter Property="TextWrapping" Value="Wrap" />
+            <Setter Property="MaxWidth" Value="200" />
+            <Setter Property="TextTrimming" Value="CharacterEllipsis" />
         </Style>
     </UserControl.Styles>
 
@@ -64,10 +69,12 @@
                                 Content="{Binding CheckForUpdatesButtonText}" />
                     </Grid>
 
-                    <Grid ColumnDefinitions="*,*"
-                          ColumnSpacing="14"
-                          RowSpacing="12">
-                        <StackPanel Grid.Column="0"
+                    <Grid ColumnDefinitions="Auto,*"
+                          RowDefinitions="Auto,Auto"
+                          ColumnSpacing="20"
+                          RowSpacing="16">
+                        <StackPanel Grid.Row="0"
+                                    Grid.Column="0"
                                     Spacing="4">
                             <TextBlock Classes="update-kv-label"
                                        Text="{Binding CurrentVersionLabel}" />
@@ -75,7 +82,8 @@
                                        Text="{Binding CurrentVersionText}" />
                         </StackPanel>
 
-                        <StackPanel Grid.Column="1"
+                        <StackPanel Grid.Row="0"
+                                    Grid.Column="1"
                                     Spacing="4"
                                     IsVisible="{Binding IsLatestVersionVisible}">
                             <TextBlock Classes="update-kv-label"
@@ -105,18 +113,27 @@
                         </StackPanel>
                     </Grid>
 
-                    <StackPanel Spacing="8">
+                    <StackPanel Spacing="12"
+                                HorizontalAlignment="Left">
                         <TextBlock Classes="settings-item-description"
-                                   Text="{Binding UpdateStatus}" />
+                                   Text="{Binding UpdateStatus}"
+                                   TextWrapping="Wrap"
+                                   HorizontalAlignment="Left"
+                                   MaxWidth="500" />
 
                         <ProgressBar Minimum="0"
                                      Maximum="100"
                                      Value="{Binding DownloadProgressValue}"
-                                     IsVisible="{Binding IsDownloadProgressVisible}" />
+                                     IsVisible="{Binding IsDownloadProgressVisible}"
+                                     HorizontalAlignment="Stretch"
+                                     Margin="0,4,0,4" />
 
                         <TextBlock Classes="settings-item-description"
                                    IsVisible="{Binding IsDownloadProgressVisible}"
-                                   Text="{Binding DownloadProgressText}" />
+                                   Text="{Binding DownloadProgressText}"
+                                   TextWrapping="Wrap"
+                                   HorizontalAlignment="Left"
+                                   Margin="0,4,0,0" />
                     </StackPanel>
 
                     <StackPanel Orientation="Horizontal"
@@ -210,15 +227,7 @@
                 </ui:SettingsExpander.Footer>
             </ui:SettingsExpander>
 
-            <ui:SettingsExpander Classes="settings-expander-card"
-                                 Header="{Binding AutoCheckUpdatesLabel}">
-                <ui:SettingsExpander.IconSource>
-                    <fi:SymbolIconSource Symbol="ClockAlarm" />
-                </ui:SettingsExpander.IconSource>
-                <ui:SettingsExpander.Footer>
-                    <ToggleSwitch IsChecked="{Binding AutoCheckUpdates}" />
-                </ui:SettingsExpander.Footer>
-            </ui:SettingsExpander>
+
         </StackPanel>
     </ScrollViewer>
 </UserControl>

LanMountainDesktop/Views/SettingsPages/WallpaperSettingsPage.axaml

@@ -21,27 +21,11 @@
                                 CornerRadius="48"
                                 BoxShadow="0 12 32 #50000000">
                             <Panel Background="{DynamicResource AdaptiveSurfaceBaseBrush}" Margin="2">
-                                <!-- 图片/视频预览 -->
+                                <!-- 图片预览 -->
                                 <Border Background="#FFF6F7F9"
                                         IsVisible="{Binding IsImage}">
                                     <Border Background="{Binding PreviewBrush}" />
                                 </Border>
-                                <Border Background="#FFF6F7F9"
-                                        IsVisible="{Binding IsVideo}">
-                                    <StackPanel HorizontalAlignment="Center"
-                                                VerticalAlignment="Center"
-                                                Spacing="12">
-                                        <fi:FluentIcon Icon="Video"
-                                                       Width="72"
-                                                       Height="72"
-                                                       Foreground="{DynamicResource AdaptiveTextSecondaryBrush}" />
-                                        <TextBlock Text="{Binding VideoModeHintText}"
-                                                   Width="300"
-                                                   TextAlignment="Center"
-                                                   TextWrapping="Wrap"
-                                                   Foreground="{DynamicResource AdaptiveTextSecondaryBrush}" />
-                                    </StackPanel>
-                                </Border>
                                 <!-- 纯色预览 -->
                                 <Border Background="{Binding SelectedColor}" 
                                         IsVisible="{Binding IsSolidColor}" />
@@ -52,31 +36,104 @@
 
                 <!-- 右侧：颜色选择网格 -->
                 <StackPanel Grid.Column="1" VerticalAlignment="Center" Spacing="12" IsVisible="{Binding IsSolidColor}">
-                    <TextBlock Text="{Binding WallpaperColorLabel}" 
-                               FontSize="14" 
-                               FontWeight="SemiBold" 
+                    <TextBlock Text="{Binding WallpaperColorLabel}"
+                               FontSize="14"
+                               FontWeight="SemiBold"
                                Opacity="0.8" />
-                    <ItemsControl ItemsSource="{Binding PresetColors}">
-                        <ItemsControl.ItemsPanel>
-                            <ItemsPanelTemplate>
-                                <UniformGrid Columns="4" Rows="3" />
-                            </ItemsPanelTemplate>
-                        </ItemsControl.ItemsPanel>
-                        <ItemsControl.ItemTemplate>
-                            <DataTemplate>
-                                <Button Width="48" Height="48" Margin="4" Padding="0"
-                                        Background="{Binding}"
-                                        BorderThickness="0"
-                                        CornerRadius="6"
-                                        Command="{Binding $parent[UserControl].((vm:WallpaperSettingsPageViewModel)DataContext).SelectColorCommand}"
-                                        CommandParameter="{Binding}"
-                                        ToolTip.Tip="{Binding}">
-                                    <!-- 简单的悬停与选中效果由 Button 默认样式提供，
-                                         由于使用了低饱和度颜色，背景色本身就很柔和 -->
-                                </Button>
-                            </DataTemplate>
-                        </ItemsControl.ItemTemplate>
-                    </ItemsControl>
+                    <UniformGrid Columns="4" Rows="3">
+                        <!-- 预设颜色 1-11 -->
+                        <Button Width="48" Height="48" Margin="4" Padding="0"
+                                Background="#D8A7B1"
+                                BorderThickness="0"
+                                CornerRadius="6"
+                                Command="{Binding SelectColorCommand}"
+                                CommandParameter="#D8A7B1"
+                                ToolTip.Tip="#D8A7B1" />
+                        <Button Width="48" Height="48" Margin="4" Padding="0"
+                                Background="#B6C9BB"
+                                BorderThickness="0"
+                                CornerRadius="6"
+                                Command="{Binding SelectColorCommand}"
+                                CommandParameter="#B6C9BB"
+                                ToolTip.Tip="#B6C9BB" />
+                        <Button Width="48" Height="48" Margin="4" Padding="0"
+                                Background="#A2B5BB"
+                                BorderThickness="0"
+                                CornerRadius="6"
+                                Command="{Binding SelectColorCommand}"
+                                CommandParameter="#A2B5BB"
+                                ToolTip.Tip="#A2B5BB" />
+                        <Button Width="48" Height="48" Margin="4" Padding="0"
+                                Background="#E6E2D3"
+                                BorderThickness="0"
+                                CornerRadius="6"
+                                Command="{Binding SelectColorCommand}"
+                                CommandParameter="#E6E2D3"
+                                ToolTip.Tip="#E6E2D3" />
+                        <Button Width="48" Height="48" Margin="4" Padding="0"
+                                Background="#B5A397"
+                                BorderThickness="0"
+                                CornerRadius="6"
+                                Command="{Binding SelectColorCommand}"
+                                CommandParameter="#B5A397"
+                                ToolTip.Tip="#B5A397" />
+                        <Button Width="48" Height="48" Margin="4" Padding="0"
+                                Background="#C5C1C0"
+                                BorderThickness="0"
+                                CornerRadius="6"
+                                Command="{Binding SelectColorCommand}"
+                                CommandParameter="#C5C1C0"
+                                ToolTip.Tip="#C5C1C0" />
+                        <Button Width="48" Height="48" Margin="4" Padding="0"
+                                Background="#D4BE8D"
+                                BorderThickness="0"
+                                CornerRadius="6"
+                                Command="{Binding SelectColorCommand}"
+                                CommandParameter="#D4BE8D"
+                                ToolTip.Tip="#D4BE8D" />
+                        <Button Width="48" Height="48" Margin="4" Padding="0"
+                                Background="#C08261"
+                                BorderThickness="0"
+                                CornerRadius="6"
+                                Command="{Binding SelectColorCommand}"
+                                CommandParameter="#C08261"
+                                ToolTip.Tip="#C08261" />
+                        <Button Width="48" Height="48" Margin="4" Padding="0"
+                                Background="#8E9775"
+                                BorderThickness="0"
+                                CornerRadius="6"
+                                Command="{Binding SelectColorCommand}"
+                                CommandParameter="#8E9775"
+                                ToolTip.Tip="#8E9775" />
+                        <Button Width="48" Height="48" Margin="4" Padding="0"
+                                Background="#9FBAD3"
+                                BorderThickness="0"
+                                CornerRadius="6"
+                                Command="{Binding SelectColorCommand}"
+                                CommandParameter="#9FBAD3"
+                                ToolTip.Tip="#9FBAD3" />
+                        <Button Width="48" Height="48" Margin="4" Padding="0"
+                                Background="#E5BAA2"
+                                BorderThickness="0"
+                                CornerRadius="6"
+                                Command="{Binding SelectColorCommand}"
+                                CommandParameter="#E5BAA2"
+                                ToolTip.Tip="#E5BAA2" />
+                        <!-- 第12个位置：自定义颜色选择器 -->
+                        <Button Width="48" Height="48" Margin="4" Padding="0"
+                                Background="{Binding CustomColorBrush}"
+                                BorderThickness="0"
+                                CornerRadius="6"
+                                ToolTip.Tip="自定义颜色">
+                            <Button.Flyout>
+                                <Flyout Placement="BottomEdgeAlignedLeft">
+                                    <StackPanel Width="260" Spacing="12">
+                                        <ColorPicker Color="{Binding CustomColor}" />
+                                    </StackPanel>
+                                </Flyout>
+                            </Button.Flyout>
+                        </Button>
+                    </UniformGrid>
                 </StackPanel>
             </Grid>
 
@@ -105,7 +162,7 @@
                 </ui:SettingsExpander.Footer>
             </ui:SettingsExpander>
 
-            <!-- 图片/视频文件选择 -->
+            <!-- 图片文件选择 -->
             <ui:SettingsExpander Header="{Binding WallpaperPathLabel}" 
                                  IsVisible="{Binding IsImage}"
                                  Margin="0,4,0,0">
@@ -129,7 +186,7 @@
             <!-- 填充方式 -->
             <ui:SettingsExpander Header="{Binding WallpaperPlacementLabel}"
                                  Description="{Binding WallpaperPlacementDescription}"
-                                 IsVisible="{Binding IsImageOrVideo}"
+                                 IsVisible="{Binding IsImage}"
                                  Margin="0,4,0,0">
                 <ui:SettingsExpander.IconSource>
                     <fi:SymbolIconSource Symbol="Maximize" />
@@ -147,12 +204,6 @@
                 </ui:SettingsExpander.Footer>
             </ui:SettingsExpander>
 
-            <TextBlock Margin="0,8,0,0"
-                       IsVisible="{Binding IsVideo}"
-                       Foreground="{DynamicResource AdaptiveTextSecondaryBrush}"
-                       Text="{Binding VideoModeHintText}"
-                       TextWrapping="Wrap" />
-
         </StackPanel>
     </ScrollViewer>
 </UserControl>

LanMountainDesktop/Views/SettingsPages/WeatherSettingsPage.axaml

@@ -96,8 +96,11 @@
                     <StackPanel Spacing="14">
                         <Grid ColumnDefinitions="*,Auto"
                               ColumnSpacing="12">
-                            <TextBox Text="{Binding SearchKeyword}"
-                                     Watermark="{Binding SearchPlaceholder}" />
+                            <TextBox x:Name="SearchKeywordTextBox"
+                                     Text="{Binding SearchKeyword}"
+                                     Watermark="{Binding SearchPlaceholder}"
+                                     Focusable="True"
+                                     IsTabStop="True" />
                             <Button Grid.Column="1"
                                     Command="{Binding SearchCommand}"
                                     Content="{Binding SearchButtonText}" />
@@ -178,12 +181,18 @@
                     </Grid>
                 </ui:SettingsExpanderItem>
                 <ui:SettingsExpanderItem>
-                    <TextBox Text="{Binding LocationKey}"
-                             Watermark="{Binding LocationKeyPlaceholder}" />
+                    <TextBox x:Name="LocationKeyTextBox"
+                             Text="{Binding LocationKey}"
+                             Watermark="{Binding LocationKeyPlaceholder}"
+                             Focusable="True"
+                             IsTabStop="True" />
                 </ui:SettingsExpanderItem>
                 <ui:SettingsExpanderItem>
-                    <TextBox Text="{Binding LocationName}"
-                             Watermark="{Binding LocationNamePlaceholder}" />
+                    <TextBox x:Name="LocationNameTextBox"
+                             Text="{Binding LocationName}"
+                             Watermark="{Binding LocationNamePlaceholder}"
+                             Focusable="True"
+                             IsTabStop="True" />
                 </ui:SettingsExpanderItem>
             </ui:SettingsExpander>
 
@@ -230,11 +239,14 @@
                     <fi:SymbolIconSource Symbol="Warning" />
                 </ui:SettingsExpander.IconSource>
                 <ui:SettingsExpander.Footer>
-                    <TextBox Width="360"
+                    <TextBox x:Name="ExcludedAlertsTextBox"
+                             Width="360"
                              MinHeight="120"
                              AcceptsReturn="True"
                              TextWrapping="Wrap"
-                             Text="{Binding ExcludedAlerts}" />
+                             Text="{Binding ExcludedAlerts}"
+                             Focusable="True"
+                             IsTabStop="True" />
                 </ui:SettingsExpander.Footer>
             </ui:SettingsExpander>
 

testicon/testicon.csproj

@@ -5,6 +5,7 @@
     <TargetFramework>net10.0</TargetFramework>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
+    <Version>1.0.0</Version>
   </PropertyGroup>
 
 </Project>