0.6.6

滑动优化

.trae/specs/class-schedule-enhancement/checklist.md

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+# Checklist
+
+## 1. 课表单双周解析修复
+
+- [x] 单周课程（WeekCountDiv=1）在单周正确显示
+- [x] 双周课程（WeekCountDiv=2）在双周正确显示
+- [x] 每周课程（WeekCountDiv=0）在所有周正确显示
+- [x] 多周轮转（2-32周）正确计算当前周期位置
+
+## 2. 课程动态移动功能
+
+- [x] 课程结束自动从视图移除
+- [x] 新课程自动移入视图可见区域
+- [x] 当日课程全部结束后自动切换到次日课程表
+
+## 3. 拖动交互功能
+
+- [x] 课程表支持上下拖动滚动
+- [x] 拖动操作流畅、响应及时
+
+## 4. 自动复位功能
+
+- [x] 用户手动拖动后，标记拖动状态
+- [x] 当前课程变化时自动复位到最新进行中课程

.trae/specs/class-schedule-enhancement/spec.md

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+# 课程表组件功能优化规格说明书
+
+## Why
+
+当前课程表组件存在以下问题：
+1. 单双周课程解析逻辑存在缺陷，无法正确识别单周/双周/每周模式
+2. 课程无法动态移动，第一列始终显示进行中的课程，但存在无法正常移动的问题
+3. 缺少用户拖动交互功能
+4. 缺少拖动后的自动复位机制
+
+## What Changes
+
+- 修复 ClassIsland 课程单双周解析逻辑
+- 实现课程动态移动机制（当前课程结束自动上移）
+- 实现课程表上下拖动交互功能
+- 实现自动复位功能（课程结束后视图复位到最新进行中课程）
+
+## Impact
+
+### Affected specs
+- 课程表组件功能规范
+
+### Affected code
+- `Services/ClassIslandScheduleDataService.cs` - 课表解析服务
+- `Views/Components/ClassScheduleWidget.axaml.cs` - 课表组件
+
+---
+
+## ADDED Requirements
+
+### Requirement: 单双周课程解析
+
+系统 SHALL 能够正确解析包含单双周信息的课程数据。
+
+#### Scenario: 单周课程
+- **WHEN** 课程设置为单周上课
+- **THEN** 课程仅在单周显示
+
+#### Scenario: 双周课程
+- **WHEN** 课程设置为双周上课
+- **THEN** 课程仅在双周显示
+
+#### Scenario: 每周课程
+- **WHEN** 课程设置为每周上课
+- **THEN** 课程在所有周显示
+
+---
+
+### Requirement: 课程动态移动
+
+系统 SHALL 实现课程的动态移动机制。
+
+#### Scenario: 课程结束自动上移
+- **WHEN** 当前进行中的课程结束
+- **THEN** 课程列表自动向上移动
+- **AND THEN** 下一个进行中或即将开始的课程移至视图可见区域
+
+#### Scenario: 新课程移入视图
+- **WHEN** 新的课程即将开始
+- **THEN** 该课程自动移至视图可见区域
+
+#### Scenario: 当日课程全部结束
+- **WHEN** 当日所有课程已结束
+- **THEN** 自动显示次日课程表
+
+---
+
+### Requirement: 拖动交互功能
+
+系统 SHALL 提供课程表的上下拖动功能。
+
+#### Scenario: 拖动查看课程
+- **WHEN** 用户在课程表区域进行上下拖动
+- **THEN** 课程列表随拖动方向滚动
+- **AND THEN** 拖动操作流畅、响应及时
+
+---
+
+### Requirement: 自动复位功能
+
+系统 SHALL 在用户手动拖动后自动复位到当前课程。
+
+#### Scenario: 当前课程结束触发复位
+- **WHEN** 用户手动拖动课程表后，当前课程结束
+- **THEN** 视图自动复位到显示最新进行中课程的位置
+
+---
+
+## MODIFIED Requirements
+
+### Requirement: 课程解析逻辑
+
+**当前**: 单双周解析可能存在缺陷
+
+**修改后**: 正确识别 WeekCountDiv 和 WeekCountDivTotal 参数，准确判断单周/双周/每周模式
+
+---
+
+## REMOVED Requirements
+
+（无）

.trae/specs/class-schedule-enhancement/tasks.md

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+# Tasks
+
+## 1. 课表单双周解析修复
+
+- [x] Task 1.1: 分析 ClassIsland 课表单双周数据结构
+  - [x] 分析 ClassIsland Schedule.json 和 Profile.json 中的周数规则字段
+  - [x] 确认 WeekCountDiv 和 WeekCountDivTotal 的含义和取值范围
+
+- [x] Task 1.2: 修复 GetCyclePositionsByDate 方法
+  - [x] 检查单周开始日期的计算逻辑
+  - [x] 修复周期位置计算公式
+
+- [x] Task 1.3: 修复 CheckRegularClassPlan 方法
+  - [x] 验证 weekCountDiv 和 weekCountDivTotal 的匹配逻辑
+  - [x] 确保单周=1、双周=2、每周=0 的正确处理
+
+## 2. 课程动态移动功能
+
+- [x] Task 2.1: 分析当前课程状态检测逻辑
+  - [x] 查看如何判断课程是否为"当前进行中"
+
+- [x] Task 2.2: 实现定时刷新机制
+  - [x] 增加更频繁的刷新定时器（每分钟检查一次）
+  - [x] 实现课程状态变化检测
+
+- [x] Task 2.3: 实现动态移动逻辑
+  - [x] 课程结束后自动上移
+  - [x] 新课程自动移入视图
+
+- [x] Task 2.4: 实现次日课程切换
+  - [x] 当日所有课程结束后自动切换到次日
+
+## 3. 拖动交互功能
+
+- [x] Task 3.1: 实现 ScrollViewer 包裹
+  - [x] 修改 XAML 使用 ScrollViewer 包裹课程列表
+
+- [x] Task 3.2: 实现拖动手势处理
+  - [x] 添加 PointerPressed/PointerMoved/PointerReleased 处理
+  - [x] 实现平滑滚动逻辑
+
+## 4. 自动复位功能
+
+- [x] Task 4.1: 记录用户拖动状态
+  - [x] 添加用户是否手动拖动的标志位
+
+- [x] Task 4.2: 实现自动复位逻辑
+  - [x] 检测当前课程变化
+  - [x] 当用户手动拖动且当前课程变化时自动复位
+
+# Task Dependencies
+
+- Task 1.1 -> Task 1.2 -> Task 1.3
+- Task 2.1 -> Task 2.2 -> Task 2.3 -> Task 2.4
+- Task 3.1 -> Task 3.2
+- Task 4.1 -> Task 4.2
+
+# Parallelizable Tasks
+
+- Task 1.x (解析修复) 与 Task 3.x (拖动) 可以并行开发
+- Task 2.x (动态移动) 可以在 Task 1 完成后进行

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

@@ -0,0 +1,206 @@
+# 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/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

@@ -1,4 +1,4 @@
-namespace LanMountainDesktop.ComponentSystem;
+namespace LanMountainDesktop.ComponentSystem;
 
 public static class BuiltInComponentIds
 {
@@ -40,4 +40,5 @@ public static class BuiltInComponentIds
     public const string DesktopWhiteboard = "DesktopWhiteboard";
     public const string DesktopBlackboardLandscape = "DesktopBlackboardLandscape";
     public const string DesktopBrowser = "DesktopBrowser";
+    public const string DesktopOfficeRecentDocuments = "DesktopOfficeRecentDocuments";
 }

LanMountainDesktop/ComponentSystem/ComponentColorSchemeHelper.cs

@@ -0,0 +1,37 @@
+using System;
+using LanMountainDesktop.Services;
+using LanMountainDesktop.Views;
+
+namespace LanMountainDesktop.ComponentSystem;
+
+public static class ComponentColorSchemeHelper
+{
+    public static bool ShouldUseMonetColor(string? componentColorScheme, string globalThemeColorMode)
+    {
+        if (string.Equals(componentColorScheme, ThemeAppearanceValues.ColorSchemeNative, StringComparison.OrdinalIgnoreCase))
+        {
+            return false;
+        }
+
+        if (string.Equals(componentColorScheme, ThemeAppearanceValues.ColorSchemeFollowSystem, StringComparison.OrdinalIgnoreCase))
+        {
+            return true;
+        }
+
+        return !string.Equals(globalThemeColorMode, ThemeAppearanceValues.ColorModeDefaultNeutral, StringComparison.OrdinalIgnoreCase);
+    }
+
+    public static string GetCurrentGlobalThemeColorMode()
+    {
+        try
+        {
+            var service = HostAppearanceThemeProvider.GetOrCreate();
+            var appearance = service.GetCurrent();
+            return appearance?.ThemeColorMode ?? ThemeAppearanceValues.ColorModeDefaultNeutral;
+        }
+        catch
+        {
+            return ThemeAppearanceValues.ColorModeDefaultNeutral;
+        }
+    }
+}

LanMountainDesktop/ComponentSystem/ComponentRegistry.cs

@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Collections.Generic;
 using System.Linq;
 using LanMountainDesktop.ComponentSystem.Extensions;
@@ -327,6 +327,15 @@ public sealed class ComponentRegistry
                 AllowStatusBarPlacement: false,
                 AllowDesktopPlacement: true,
                 ResizeMode: DesktopComponentResizeMode.Free),
+            new DesktopComponentDefinition(
+                BuiltInComponentIds.DesktopOfficeRecentDocuments,
+                "Office Recent Documents",
+                "Folder",
+                "File",
+                MinWidthCells: 4,
+                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 +55,14 @@
     <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="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

@@ -99,6 +99,11 @@
     "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",
@@ -255,7 +260,6 @@
     "settings.color.use_system_chrome_toggle":  "Use system window chrome",
     "settings.color.theme_color_label":  "Theme accent color",
     "settings.appearance.theme_color_mode_label":  "Theme color source",
-    "settings.appearance.system_material_label":  "System material",
     "settings.appearance.theme_color_mode.neutral":  "Default neutral",
     "settings.appearance.theme_color_mode.user":  "User theme color Monet",
     "settings.appearance.theme_color_mode.wallpaper":  "Wallpaper Monet",
@@ -265,6 +269,8 @@
     "settings.appearance.theme_color_preview.app":  "Currently previewing colors extracted from the app wallpaper.",
     "settings.appearance.theme_color_preview.system":  "Currently previewing colors extracted from the system wallpaper.",
     "settings.appearance.theme_color_preview.fallback":  "No usable wallpaper was found. The app is using a fallback accent.",
+    "component.color_scheme.follow_system":  "Follow system color scheme",
+    "component.color_scheme.native":  "Use component custom color scheme",
     "settings.appearance.system_material.none":  "None",
     "settings.appearance.system_material.mica":  "Mica",
     "settings.appearance.system_material.acrylic":  "Acrylic",
@@ -553,6 +559,7 @@
     "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",
@@ -580,6 +587,7 @@
     "component.whiteboard":  "Blackboard (Portrait)",
     "component.blackboard_landscape":  "Blackboard (Landscape)",
     "component.browser":  "Browser",
+    "component.office_recent_documents":  "Recent Documents",
     "component.holiday_calendar":  "Holiday Calendar",
     "component.study_environment":  "Environment",
     "component.study_session_control":  "Study Session Control",
@@ -885,5 +893,7 @@
     "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

@@ -31,13 +31,14 @@
     "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 +47,14 @@
     "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",
@@ -85,7 +80,6 @@
     "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。",
@@ -104,6 +98,11 @@
     "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",
@@ -260,7 +259,6 @@
     "settings.color.use_system_chrome_toggle":  "使用系统窗口标题栏",
     "settings.color.theme_color_label":  "主题强调色",
     "settings.appearance.theme_color_mode_label":  "主题色来源",
-    "settings.appearance.system_material_label":  "系统材质",
     "settings.appearance.theme_color_mode.neutral":  "默认中性",
     "settings.appearance.theme_color_mode.user":  "用户主题色 Monet",
     "settings.appearance.theme_color_mode.wallpaper":  "壁纸 Monet 取色",
@@ -270,6 +268,8 @@
     "settings.appearance.theme_color_preview.app":  "当前正在预览从应用壁纸提取的颜色。",
     "settings.appearance.theme_color_preview.system":  "当前正在预览从系统壁纸提取的颜色。",
     "settings.appearance.theme_color_preview.fallback":  "没有可用壁纸，当前使用回退强调色。",
+    "component.color_scheme.follow_system":  "跟随系统配色",
+    "component.color_scheme.native":  "使用组件自定义配色",
     "settings.appearance.system_material.none":  "无",
     "settings.appearance.system_material.mica":  "Mica",
     "settings.appearance.system_material.acrylic":  "Acrylic",
@@ -392,7 +392,6 @@
     "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",
@@ -558,6 +557,7 @@
     "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",
@@ -585,6 +585,7 @@
     "component.whiteboard":  "竖向小黑板",
     "component.blackboard_landscape":  "横向小黑板",
     "component.browser":  "浏览器",
+    "component.office_recent_documents":  "最近文档",
     "component.holiday_calendar":  "节假日日历",
     "component.study_environment":  "环境",
     "component.study_session_control":  "自习时段控制",
@@ -890,5 +891,7 @@
     "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";

LanMountainDesktop/Models/ComponentSettingsSnapshot.cs

@@ -6,6 +6,8 @@ public sealed class ComponentSettingsSnapshot
 {
     public string DailyArtworkMirrorSource { get; set; } = DailyArtworkMirrorSources.Overseas;
 
+    public string? ColorSchemeSource { get; set; }
+
     public List<ImportedClassScheduleSnapshot> ImportedClassSchedules { get; set; } = [];
 
     public string ActiveImportedClassScheduleId { get; set; } = string.Empty;

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();
@@ -248,6 +173,15 @@ internal sealed class WindowMaterialService : IWindowMaterialService
     {
         ArgumentNullException.ThrowIfNull(window);
 
+        var normalizedMode = ThemeAppearanceValues.NormalizeSystemMaterialMode(materialMode);
+
+        if (normalizedMode == ThemeAppearanceValues.MaterialNone)
+        {
+            window.Background = Brushes.White;
+            window.TransparencyLevelHint = [WindowTransparencyLevel.None];
+            return;
+        }
+
         window.Background = Brushes.Transparent;
 
         if (!OperatingSystem.IsWindows() || !IsTransparencyEnabled())
@@ -259,7 +193,6 @@ internal sealed class WindowMaterialService : IWindowMaterialService
             return;
         }
 
-        var normalizedMode = ThemeAppearanceValues.NormalizeSystemMaterialMode(materialMode);
         window.TransparencyLevelHint = normalizedMode switch
         {
             ThemeAppearanceValues.MaterialMica =>
@@ -469,7 +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;
@@ -482,14 +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,
@@ -878,7 +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 },
             _ => []
         };
@@ -912,16 +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) &&
@@ -952,16 +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/ClassIslandScheduleDataService.cs

@@ -163,7 +163,7 @@ public sealed class ClassIslandScheduleDataService : IClassIslandScheduleDataSer
         var totalElapsedWeeks = (int)Math.Floor(
             (referenceDate.ToDateTime(TimeOnly.MinValue) - cycleRule.SingleWeekStartDate.Value.ToDateTime(TimeOnly.MinValue)).TotalDays / 7d);
 
-        for (var cycleLength = 2; cycleLength <= maxCycle; cycleLength++)
+        for (var cycleLength = 1; cycleLength <= maxCycle; cycleLength++)
         {
             var cycleOffset = cycleLength < cycleRule.MultiWeekRotationOffset.Count
                 ? cycleRule.MultiWeekRotationOffset[cycleLength]
@@ -668,7 +668,7 @@ public sealed class ClassIslandScheduleDataService : IClassIslandScheduleDataSer
             return true;
         }
 
-        if (weekCountDivTotal <= 1 || weekCountDivTotal >= cyclePositions.Count)
+        if (weekCountDivTotal <= 0 || weekCountDivTotal >= cyclePositions.Count)
         {
             return false;
         }

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/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

@@ -0,0 +1,338 @@
+using System;
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.IO;
+using System.Linq;
+using System.Runtime.InteropServices;
+using System.Text;
+using System.Text.Json;
+using LanMountainDesktop.Services.Settings;
+using Microsoft.Win32;
+
+namespace LanMountainDesktop.Services;
+
+public interface IOfficeRecentDocumentsService
+{
+    List<OfficeRecentDocument> GetRecentDocuments(int maxCount = 20);
+    void OpenDocument(string filePath);
+}
+
+public sealed class OfficeRecentDocument
+{
+    public string FileName { get; set; } = string.Empty;
+    public string FilePath { get; set; } = string.Empty;
+    public string Extension { get; set; } = string.Empty;
+    public DateTime LastModifiedTime { get; set; }
+    public long FileSizeBytes { get; set; }
+    public string IconGlyph { get; set; } = string.Empty;
+}
+
+public sealed class OfficeRecentDocumentsService : IOfficeRecentDocumentsService
+{
+    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" };
+
+    public List<OfficeRecentDocument> GetRecentDocuments(int maxCount = 20)
+    {
+        var documents = new List<OfficeRecentDocument>();
+
+        // 方法1: 从注册表读取Office最近文档（最可靠）
+        TryGetFromRegistry(documents);
+
+        // 方法2: 从Recent文件夹读取快捷方式（备用）
+        TryGetFromRecentFolders(documents);
+
+        // 方法3: 从Windows Jump List读取（如果可用）
+        TryGetFromJumpList(documents);
+
+        return documents
+            .GroupBy(d => d.FilePath, StringComparer.OrdinalIgnoreCase)
+            .Select(g => g.OrderByDescending(d => d.LastModifiedTime).First())
+            .OrderByDescending(d => d.LastModifiedTime)
+            .Take(maxCount)
+            .ToList();
+    }
+
+    public void OpenDocument(string filePath)
+    {
+        try
+        {
+            var startInfo = new ProcessStartInfo
+            {
+                FileName = filePath,
+                UseShellExecute = true
+            };
+            Process.Start(startInfo);
+        }
+        catch
+        {
+        }
+    }
+
+#pragma warning disable CA1416 // 平台兼容性警告
+    private void TryGetFromRegistry(List<OfficeRecentDocument> documents)
+    {
+        try
+        {
+            // Word最近文档
+            TryGetFromOfficeRegistry(documents, @"Software\Microsoft\Office\Word\Reading Locations");
+            TryGetFromOfficeRegistry(documents, @"Software\Microsoft\Office\16.0\Word\Reading Locations");
+            TryGetFromOfficeRegistry(documents, @"Software\Microsoft\Office\15.0\Word\Reading Locations");
+
+            // Excel最近文档
+            TryGetFromOfficeRegistry(documents, @"Software\Microsoft\Office\Excel\Reading Locations");
+            TryGetFromOfficeRegistry(documents, @"Software\Microsoft\Office\16.0\Excel\Reading Locations");
+            TryGetFromOfficeRegistry(documents, @"Software\Microsoft\Office\15.0\Excel\Reading Locations");
+
+            // PowerPoint最近文档
+            TryGetFromOfficeRegistry(documents, @"Software\Microsoft\Office\PowerPoint\Reading Locations");
+            TryGetFromOfficeRegistry(documents, @"Software\Microsoft\Office\16.0\PowerPoint\Reading Locations");
+            TryGetFromOfficeRegistry(documents, @"Software\Microsoft\Office\15.0\PowerPoint\Reading Locations");
+
+            // 通用Office最近文档
+            TryGetFromOfficeRegistry(documents, @"Software\Microsoft\Office\16.0\Common\Open Find\Microsoft Office Word");
+            TryGetFromOfficeRegistry(documents, @"Software\Microsoft\Office\16.0\Common\Open Find\Microsoft Office Excel");
+            TryGetFromOfficeRegistry(documents, @"Software\Microsoft\Office\16.0\Common\Open Find\Microsoft Office PowerPoint");
+        }
+        catch
+        {
+            // 忽略注册表访问错误
+        }
+    }
+
+    private void TryGetFromOfficeRegistry(List<OfficeRecentDocument> documents, string registryPath)
+    {
+        try
+        {
+            using var key = Registry.CurrentUser.OpenSubKey(registryPath);
+            if (key == null) return;
+
+            foreach (var subKeyName in key.GetSubKeyNames())
+            {
+                try
+                {
+                    using var subKey = key.OpenSubKey(subKeyName);
+                    if (subKey == null) continue;
+
+                    var filePath = subKey.GetValue("Path") as string;
+                    if (string.IsNullOrEmpty(filePath)) continue;
+
+                    AddDocumentIfExists(documents, filePath);
+                }
+                catch
+                {
+                    // 忽略单个子键访问错误
+                }
+            }
+        }
+        catch
+        {
+            // 忽略注册表访问错误
+        }
+    }
+#pragma warning restore CA1416 // 平台兼容性警告
+
+    private void TryGetFromRecentFolders(List<OfficeRecentDocument> documents)
+    {
+        var recentPaths = GetRecentFolders();
+
+        foreach (var recentPath in recentPaths)
+        {
+            if (!Directory.Exists(recentPath))
+            {
+                continue;
+            }
+
+            try
+            {
+                var files = Directory.GetFiles(recentPath, "*.lnk");
+                foreach (var lnkPath in files)
+                {
+                    var targetPath = GetShortcutTarget(lnkPath);
+                    if (string.IsNullOrEmpty(targetPath))
+                    {
+                        continue;
+                    }
+
+                    AddDocumentIfExists(documents, targetPath);
+                }
+            }
+            catch
+            {
+                // 忽略文件夹访问错误
+            }
+        }
+    }
+
+    private void TryGetFromJumpList(List<OfficeRecentDocument> documents)
+    {
+        try
+        {
+            // Windows Jump List存储在以下位置
+            var appData = Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData);
+            var jumpListPath = Path.Combine(
+                Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData),
+                "Microsoft", "Windows", "Recent", "AutomaticDestinations");
+
+            if (!Directory.Exists(jumpListPath)) return;
+
+            // Office应用的Jump List文件
+            var officeJumpListFiles = new[]
+            {
+                "a7bd7a3f3d5a4c74.automaticDestinations-ms", // Word
+                "9b524fe3be704a4d.automaticDestinations-ms", // Excel
+                "d0063c4c7de64e5e.automaticDestinations-ms"  // PowerPoint
+            };
+
+            foreach (var jumpFile in officeJumpListFiles)
+            {
+                var fullPath = Path.Combine(jumpListPath, jumpFile);
+                if (File.Exists(fullPath))
+                {
+                    TryParseJumpListFile(fullPath, documents);
+                }
+            }
+        }
+        catch
+        {
+            // Jump List解析失败，忽略
+        }
+    }
+
+    private void TryParseJumpListFile(string jumpListPath, List<OfficeRecentDocument> documents)
+    {
+        try
+        {
+            // Jump List文件是二进制格式，这里使用简化的方法
+            // 读取文件并尝试提取文件路径
+            var bytes = File.ReadAllBytes(jumpListPath);
+            var text = Encoding.Unicode.GetString(bytes);
+
+            // 查找可能的文件路径（简化实现）
+            var possiblePaths = ExtractPossiblePaths(text);
+            foreach (var path in possiblePaths)
+            {
+                AddDocumentIfExists(documents, path);
+            }
+        }
+        catch
+        {
+            // Jump List解析失败，忽略
+        }
+    }
+
+    private IEnumerable<string> ExtractPossiblePaths(string text)
+    {
+        var paths = new List<string>();
+
+        // 查找常见的文件路径模式
+        var patterns = new[]
+        {
+            @"[A-Z]:\\[^\x00-\x1F""<>|]*\.(docx?|xlsx?|pptx?|rtf|csv)",
+            @"\\\\[^\\]+\\[^\x00-\x1F""<>|]*\.(docx?|xlsx?|pptx?|rtf|csv)"
+        };
+
+        foreach (var pattern in patterns)
+        {
+            try
+            {
+                var matches = System.Text.RegularExpressions.Regex.Matches(text, pattern,
+                    System.Text.RegularExpressions.RegexOptions.IgnoreCase);
+
+                foreach (System.Text.RegularExpressions.Match match in matches)
+                {
+                    var path = match.Value.Trim('\0', ' ', '"');
+                    if (!string.IsNullOrEmpty(path))
+                    {
+                        paths.Add(path);
+                    }
+                }
+            }
+            catch
+            {
+                // 忽略正则表达式错误
+            }
+        }
+
+        return paths.Distinct(StringComparer.OrdinalIgnoreCase);
+    }
+
+    private void AddDocumentIfExists(List<OfficeRecentDocument> documents, string filePath)
+    {
+        try
+        {
+            var extension = Path.GetExtension(filePath).ToLowerInvariant();
+            if (!IsOfficeFile(extension))
+            {
+                return;
+            }
+
+            if (!File.Exists(filePath))
+            {
+                return;
+            }
+
+            var fileInfo = new FileInfo(filePath);
+            var doc = new OfficeRecentDocument
+            {
+                FileName = Path.GetFileNameWithoutExtension(filePath),
+                FilePath = filePath,
+                Extension = extension,
+                LastModifiedTime = fileInfo.LastWriteTime,
+                FileSizeBytes = fileInfo.Length,
+                IconGlyph = GetIconGlyph(extension)
+            };
+
+            if (!documents.Any(d => string.Equals(d.FilePath, filePath, StringComparison.OrdinalIgnoreCase)))
+            {
+                documents.Add(doc);
+            }
+        }
+        catch
+        {
+            // 忽略单个文件处理错误
+        }
+    }
+
+    private static List<string> GetRecentFolders()
+    {
+        var folders = new List<string>();
+
+        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"));
+
+        // 添加Office 365路径
+        var localAppData = Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData);
+        folders.Add(Path.Combine(localAppData, "Microsoft", "Office", "Word", "Recent"));
+        folders.Add(Path.Combine(localAppData, "Microsoft", "Office", "Excel", "Recent"));
+        folders.Add(Path.Combine(localAppData, "Microsoft", "Office", "PowerPoint", "Recent"));
+
+        return folders;
+    }
+
+    private static bool IsOfficeFile(string extension)
+    {
+        return OfficeExtensions.Contains(extension) ||
+               ExcelExtensions.Contains(extension) ||
+               PowerPointExtensions.Contains(extension);
+    }
+
+    private static string GetIconGlyph(string extension)
+    {
+        return extension switch
+        {
+            ".doc" or ".docx" or ".dot" or ".dotx" or ".rtf" => "\uE8A5",
+            ".xls" or ".xlsx" or ".xlsm" or ".xlsb" or ".csv" => "\uE9F9",
+            ".ppt" or ".pptx" or ".pptm" or ".pps" or ".ppsx" => "\uE8A1",
+            _ => "\uE8A5"
+        };
+    }
+
+    private static string? GetShortcutTarget(string lnkPath)
+    {
+        return ShortcutHelper.GetShortcutTarget(lnkPath);
+    }
+}

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,
@@ -48,7 +47,6 @@ 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;
     }
 
@@ -638,7 +628,6 @@ 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 +645,6 @@ 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 +670,7 @@ 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/ShortcutHelper.cs

@@ -0,0 +1,32 @@
+using System.Runtime.InteropServices;
+
+namespace LanMountainDesktop.Services;
+
+internal static class ShortcutHelper
+{
+    [ComImport]
+    [Guid("72C24DD5-D70A-438B-8A42-98424B88AFB8")]
+    internal class WshShell { }
+
+    [ComImport]
+    [Guid("F935DC21-1CF0-11D0-ADB9-00C04FD58A0B")]
+    [InterfaceType(ComInterfaceType.InterfaceIsIDispatch)]
+    internal interface IWshShortcut
+    {
+        string TargetPath { get; set; }
+    }
+
+    public static string? GetShortcutTarget(string lnkPath)
+    {
+        try
+        {
+            dynamic shell = new WshShell();
+            dynamic shortcut = shell.CreateShortcut(lnkPath);
+            return shortcut.TargetPath;
+        }
+        catch
+        {
+            return null;
+        }
+    }
+}

LanMountainDesktop/Services/ThemeAppearanceValues.cs

@@ -10,6 +10,9 @@ public static class ThemeAppearanceValues
     public const string ColorModeSeedMonet = "seed_monet";
     public const string ColorModeWallpaperMonet = "wallpaper_monet";
 
+    public const string ColorSchemeFollowSystem = "follow_system";
+    public const string ColorSchemeNative = "native";
+
     public const string MaterialNone = "none";
     public const string MaterialMica = "mica";
     public const string MaterialAcrylic = "acrylic";

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/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/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/ComponentEditors/ClassScheduleComponentEditor.axaml

@@ -17,6 +17,22 @@
             </StackPanel>
         </Border>
 
+        <Border Classes="component-editor-card"
+                Padding="20">
+            <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>
+            </StackPanel>
+        </Border>
+
         <Border Classes="component-editor-card"
                 Padding="20">
             <StackPanel Spacing="12">

LanMountainDesktop/Views/ComponentEditors/ClassScheduleComponentEditor.axaml.cs

@@ -11,13 +11,15 @@ using Avalonia.Media;
 using Avalonia.Platform.Storage;
 using LanMountainDesktop.ComponentSystem;
 using LanMountainDesktop.Models;
+using LanMountainDesktop.Services;
 
 namespace LanMountainDesktop.Views.ComponentEditors;
 
 public partial class ClassScheduleComponentEditor : ComponentEditorViewBase
 {
     private readonly List<ImportedClassScheduleSnapshot> _importedSchedules = [];
-    private string _activeScheduleId = string.Empty;
+    private string? _activeScheduleId;
+    private bool _suppressEvents;
 
     public ClassScheduleComponentEditor()
         : this(null)
@@ -62,10 +64,49 @@ public partial class ClassScheduleComponentEditor : ComponentEditorViewBase
 
     private void ApplyState()
     {
+        var snapshot = LoadSnapshot();
+        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");
+
+        _suppressEvents = true;
+        
+        if (string.IsNullOrEmpty(colorSchemeSource) || 
+            colorSchemeSource == ThemeAppearanceValues.ColorSchemeFollowSystem)
+        {
+            FollowSystemRadioButton.IsChecked = true;
+        }
+        else
+        {
+            UseNativeRadioButton.IsChecked = true;
+        }
+        
+        _suppressEvents = false;
+    }
+
+    private void OnColorSchemeChanged(object? sender, RoutedEventArgs e)
+    {
+        if (_suppressEvents)
+        {
+            return;
+        }
+
+        var useNative = UseNativeRadioButton.IsChecked == true;
+        var colorSchemeSource = useNative 
+            ? ThemeAppearanceValues.ColorSchemeNative 
+            : ThemeAppearanceValues.ColorSchemeFollowSystem;
+
+        var snapshot = LoadSnapshot();
+        snapshot.ColorSchemeSource = colorSchemeSource;
+        SaveSnapshot(snapshot, nameof(ComponentSettingsSnapshot.ColorSchemeSource));
     }
 
     private async void OnAddScheduleClick(object? sender, RoutedEventArgs e)

LanMountainDesktop/Views/ComponentEditors/StudyEnvironmentComponentEditor.axaml

@@ -2,10 +2,11 @@
              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:ui="using:FluentAvalonia.UI.Controls"
              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"
@@ -17,6 +18,22 @@
             </StackPanel>
         </Border>
 
+        <Border Classes="component-editor-card"
+                Padding="20">
+            <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>
+            </StackPanel>
+        </Border>
+
         <Border Classes="component-editor-card"
                 Padding="20">
             <StackPanel Spacing="12">
@@ -27,7 +44,7 @@
             </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

@@ -1,6 +1,7 @@
 using Avalonia.Interactivity;
 using LanMountainDesktop.ComponentSystem;
 using LanMountainDesktop.Models;
+using LanMountainDesktop.Services;
 
 namespace LanMountainDesktop.Views.ComponentEditors;
 
@@ -25,6 +26,8 @@ public partial class StudyEnvironmentComponentEditor : ComponentEditorViewBase
         var snapshot = LoadSnapshot();
         var showDisplayDb = snapshot.StudyEnvironmentShowDisplayDb;
         var showDbfs = snapshot.StudyEnvironmentShowDbfs;
+        var colorSchemeSource = snapshot.ColorSchemeSource;
+
         if (!showDisplayDb && !showDbfs)
         {
             showDisplayDb = true;
@@ -32,16 +35,49 @@ 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。");
 
         _suppressEvents = true;
+        
+        if (string.IsNullOrEmpty(colorSchemeSource) || 
+            colorSchemeSource == ThemeAppearanceValues.ColorSchemeFollowSystem)
+        {
+            FollowSystemRadioButton.IsChecked = true;
+        }
+        else
+        {
+            UseNativeRadioButton.IsChecked = true;
+        }
+        
         DisplayDbToggleSwitch.IsChecked = showDisplayDb;
         DbfsToggleSwitch.IsChecked = showDbfs;
         _suppressEvents = false;
     }
 
+    private void OnColorSchemeChanged(object? sender, RoutedEventArgs e)
+    {
+        if (_suppressEvents)
+        {
+            return;
+        }
+
+        var useNative = UseNativeRadioButton.IsChecked == true;
+        var colorSchemeSource = useNative 
+            ? ThemeAppearanceValues.ColorSchemeNative 
+            : ThemeAppearanceValues.ColorSchemeFollowSystem;
+
+        var snapshot = LoadSnapshot();
+        snapshot.ColorSchemeSource = colorSchemeSource;
+        SaveSnapshot(snapshot, nameof(ComponentSettingsSnapshot.ColorSchemeSource));
+    }
+
     private void OnToggleChanged(object? sender, RoutedEventArgs e)
     {
         _ = sender;

LanMountainDesktop/Views/Components/BaiduHotSearchWidget.axaml.cs

@@ -13,6 +13,7 @@ using Avalonia.Layout;
 using Avalonia.Media;
 using Avalonia.Styling;
 using Avalonia.Threading;
+using LanMountainDesktop.ComponentSystem;
 using LanMountainDesktop.Models;
 using LanMountainDesktop.Services;
 
@@ -50,6 +51,7 @@ public partial class BaiduHotSearchWidget : UserControl, IDesktopComponentWidget
     private bool _autoRefreshEnabled = true;
     private string _sourceType = BaiduHotSearchSourceTypes.Official;
     private bool _isNightVisual = true;
+    private string? _componentColorScheme;
 
     private sealed record HotItemVisual(
         Border Host,
@@ -180,17 +182,25 @@ public partial class BaiduHotSearchWidget : UserControl, IDesktopComponentWidget
 
     private void ApplyNightModeVisual()
     {
+        var useMonetColor = ComponentColorSchemeHelper.ShouldUseMonetColor(
+            _componentColorScheme, 
+            ComponentColorSchemeHelper.GetCurrentGlobalThemeColorMode());
+
+        var brandColor = useMonetColor
+            ? (_isNightVisual ? Color.Parse("#9FABFF") : Color.Parse("#4F6BEB"))
+            : (_isNightVisual ? Color.Parse("#5D93FF") : Color.Parse("#2932E1"));
+
         CardBorder.Background = new SolidColorBrush(_isNightVisual ? Color.Parse("#1B2129") : Color.Parse("#FCFCFD"));
         RootBorder.BorderBrush = new SolidColorBrush(_isNightVisual ? Color.Parse("#33FFFFFF") : Color.Parse("#00000000"));
 
-        BrandTextBlock.Foreground = new SolidColorBrush(_isNightVisual ? Color.Parse("#5D93FF") : Color.Parse("#2932E1"));
+        BrandTextBlock.Foreground = new SolidColorBrush(brandColor);
 
         RefreshButton.Background = new SolidColorBrush(_isNightVisual ? Color.Parse("#2D3440") : Color.Parse("#EFF1F5"));
         RefreshGlyphIcon.Foreground = new SolidColorBrush(_isNightVisual ? Color.Parse("#A8B1C2") : Color.Parse("#5E6671"));
 
         foreach (var visual in _hotItemVisuals)
         {
-            visual.IndexTextBlock.Foreground = new SolidColorBrush(_isNightVisual ? Color.Parse("#5D93FF") : Color.Parse("#2932E1"));
+            visual.IndexTextBlock.Foreground = new SolidColorBrush(brandColor);
             visual.TitleTextBlock.Foreground = new SolidColorBrush(_isNightVisual ? Color.Parse("#E8EAED") : Color.Parse("#202327"));
         }
 
@@ -488,10 +498,11 @@ public partial class BaiduHotSearchWidget : UserControl, IDesktopComponentWidget
             enabled = snapshot.BaiduHotSearchAutoRefreshEnabled;
             intervalMinutes = NormalizeAutoRefreshIntervalMinutes(snapshot.BaiduHotSearchAutoRefreshIntervalMinutes);
             sourceType = BaiduHotSearchSourceTypes.Normalize(snapshot.BaiduHotSearchSourceType);
+            _componentColorScheme = snapshot.ColorSchemeSource;
         }
         catch
         {
-            // Keep fallback defaults.
+            _componentColorScheme = null;
         }
 
         _autoRefreshEnabled = enabled;

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

@@ -1,9 +1,10 @@
-using System;
+using System;
 using System.Collections.Generic;
 using System.Globalization;
 using System.Linq;
 using Avalonia;
 using Avalonia.Controls;
+using Avalonia.Input;
 using Avalonia.Media;
 using Avalonia.Styling;
 using Avalonia.Threading;
@@ -25,9 +26,17 @@ public partial class ClassScheduleWidget : UserControl, IDesktopComponentWidget,
 
     private readonly DispatcherTimer _refreshTimer = new()
     {
-        Interval = TimeSpan.FromMinutes(4)
+        Interval = TimeSpan.FromMinutes(1)
     };
 
+    private int _lastCurrentCourseIndex = -1;
+    private DateOnly _lastRefreshDate = DateOnly.MinValue;
+
+    private bool _isUserScrolling;
+    private Vector _lastScrollOffset;
+    private Point _dragStartPoint;
+    private Point _lastDragPoint;
+
     private ISettingsService _settingsService = HostSettingsFacadeProvider.GetOrCreate().Settings;
     private readonly LocalizationService _localizationService = new();
     private readonly IClassIslandScheduleDataService _scheduleService = new ClassIslandScheduleDataService();
@@ -39,6 +48,7 @@ public partial class ClassScheduleWidget : UserControl, IDesktopComponentWidget,
     private string _languageCode = "zh-CN";
     private string _componentId = BuiltInComponentIds.DesktopClassSchedule;
     private string _placementId = string.Empty;
+    private string? _componentColorScheme;
 
     public ClassScheduleWidget()
     {
@@ -50,6 +60,10 @@ public partial class ClassScheduleWidget : UserControl, IDesktopComponentWidget,
         SizeChanged += OnSizeChanged;
         ActualThemeVariantChanged += OnActualThemeVariantChanged;
 
+        ContentScrollViewer.PointerPressed += OnScrollViewerPointerPressed;
+        ContentScrollViewer.PointerMoved += OnScrollViewerPointerMoved;
+        ContentScrollViewer.PointerReleased += OnScrollViewerPointerReleased;
+
         ApplyCellSize(_currentCellSize);
         RefreshSchedule();
     }
@@ -107,9 +121,109 @@ public partial class ClassScheduleWidget : UserControl, IDesktopComponentWidget,
         RefreshSchedule();
     }
 
+    private void OnScrollViewerPointerPressed(object? sender, PointerPressedEventArgs e)
+    {
+        _isUserScrolling = true;
+        _dragStartPoint = e.GetCurrentPoint(ContentScrollViewer).Position;
+        _lastDragPoint = _dragStartPoint;
+        _lastScrollOffset = ContentScrollViewer.Offset;
+    }
+
+    private void OnScrollViewerPointerMoved(object? sender, PointerEventArgs e)
+    {
+        if (!_isUserScrolling)
+        {
+            return;
+        }
+
+        var currentPoint = e.GetCurrentPoint(ContentScrollViewer);
+        var currentPosition = currentPoint.Position;
+        var deltaY = currentPosition.Y - _lastDragPoint.Y;
+
+        var newOffset = _lastScrollOffset;
+        newOffset = newOffset.WithY(newOffset.Y - deltaY);
+
+        ContentScrollViewer.Offset = newOffset;
+        _lastDragPoint = currentPosition;
+    }
+
+    private void OnScrollViewerPointerReleased(object? sender, PointerReleasedEventArgs e)
+    {
+        _lastScrollOffset = ContentScrollViewer.Offset;
+    }
+
     private void OnRefreshTimerTick(object? sender, EventArgs e)
     {
+        var now = _timeZoneService?.GetCurrentTime() ?? DateTime.Now;
+        var currentDate = DateOnly.FromDateTime(now);
+        
+        var previousCourseIndex = _lastCurrentCourseIndex;
+        
         RefreshSchedule();
+        
+        var newCurrentCourseIndex = FindCurrentCourseIndex();
+        _lastCurrentCourseIndex = newCurrentCourseIndex;
+        
+        if (previousCourseIndex != newCurrentCourseIndex && newCurrentCourseIndex >= 0)
+        {
+            if (_isUserScrolling)
+            {
+                _isUserScrolling = false;
+            }
+            ScrollToCurrentCourse(newCurrentCourseIndex);
+        }
+        
+        if (_lastRefreshDate != currentDate && currentDate > _lastRefreshDate)
+        {
+            _lastRefreshDate = currentDate;
+        }
+    }
+
+    private int FindCurrentCourseIndex()
+    {
+        for (var i = 0; i < _courseItems.Count; i++)
+        {
+            if (_courseItems[i].IsCurrent)
+            {
+                return i;
+            }
+        }
+        return -1;
+    }
+
+    private void ScrollToCurrentCourse(int courseIndex)
+    {
+        if (courseIndex < 0 || courseIndex >= _courseItems.Count)
+        {
+            return;
+        }
+
+        // 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;
+            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()
@@ -134,45 +248,85 @@ public partial class ClassScheduleWidget : UserControl, IDesktopComponentWidget,
             _componentId,
             _placementId);
         _languageCode = _localizationService.NormalizeLanguageCode(appSettings.LanguageCode);
+        _componentColorScheme = componentSettings.ColorSchemeSource;
         var now = _timeZoneService?.GetCurrentTime() ?? DateTime.Now;
-        UpdateHeader(now);
+        var today = DateOnly.FromDateTime(now);
 
         var importedSchedulePath = ResolveImportedSchedulePath(componentSettings);
         var readResult = _scheduleService.Load(importedSchedulePath);
         if (!readResult.Success || readResult.Snapshot is null)
         {
             _courseItems = Array.Empty<CourseItemViewModel>();
+            UpdateHeader(now);
             ShowStatus(L("schedule.widget.no_source", "未读取到 ClassIsland 课表"));
             RenderScheduleItems();
             return;
         }
 
         var snapshot = readResult.Snapshot;
-        var today = DateOnly.FromDateTime(now);
+        
         if (!_scheduleService.TryResolveClassPlanForDate(snapshot, today, out var resolvedClassPlan))
         {
-            _courseItems = Array.Empty<CourseItemViewModel>();
-            ShowStatus(L("schedule.widget.no_class_today", "今天没有课程"));
-            RenderScheduleItems();
-            return;
+            var nextDay = today.AddDays(1);
+            if (_scheduleService.TryResolveClassPlanForDate(snapshot, nextDay, out var nextDayClassPlan))
+            {
+                resolvedClassPlan = nextDayClassPlan;
+                today = nextDay;
+            }
+            else
+            {
+                _courseItems = Array.Empty<CourseItemViewModel>();
+                UpdateHeader(now);
+                ShowStatus(L("schedule.widget.no_class_today", "今天没有课程"));
+                RenderScheduleItems();
+                return;
+            }
         }
 
         if (!snapshot.TimeLayouts.TryGetValue(resolvedClassPlan.ClassPlan.TimeLayoutId, out var layout))
         {
             _courseItems = Array.Empty<CourseItemViewModel>();
+            UpdateHeader(now);
             ShowStatus(L("schedule.widget.layout_missing", "课表时间布局缺失"));
             RenderScheduleItems();
             return;
         }
 
-        _courseItems = BuildCourseItemViewModels(snapshot, resolvedClassPlan.ClassPlan, layout, now);
+        var adjustedNow = today == DateOnly.FromDateTime(now) ? now : DateTime.Today.AddHours(8);
+        _courseItems = BuildCourseItemViewModels(snapshot, resolvedClassPlan.ClassPlan, layout, adjustedNow);
+        
+        if (_courseItems.Count == 0)
+        {
+            var nextDay = today.AddDays(1);
+            if (_scheduleService.TryResolveClassPlanForDate(snapshot, nextDay, out var nextDayClassPlan) &&
+                snapshot.TimeLayouts.TryGetValue(nextDayClassPlan.ClassPlan.TimeLayoutId, out var nextLayout))
+            {
+                today = nextDay;
+                adjustedNow = DateTime.Today.AddHours(8);
+                _courseItems = BuildCourseItemViewModels(snapshot, nextDayClassPlan.ClassPlan, nextLayout, adjustedNow);
+            }
+        }
+
+        UpdateHeader(today.ToDateTime(TimeOnly.MinValue));
+        
         if (_courseItems.Count == 0)
         {
             ShowStatus(L("schedule.widget.no_class_today", "今天没有课程"));
         }
         else
         {
+            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();
@@ -336,6 +490,10 @@ public partial class ClassScheduleWidget : UserControl, IDesktopComponentWidget,
             return;
         }
 
+        var useMonetColor = ComponentColorSchemeHelper.ShouldUseMonetColor(
+            _componentColorScheme,
+            ComponentColorSchemeHelper.GetCurrentGlobalThemeColorMode());
+
         var scale = ResolveScale();
         var bulletSize = Math.Clamp(10 * scale, 5, 12);
         var courseNameSize = Math.Clamp(42 * scale, 14, 42);
@@ -350,13 +508,14 @@ public partial class ClassScheduleWidget : UserControl, IDesktopComponentWidget,
 
         var primaryBrush = CreateBrush(_isNightVisual ? "#F9FBFF" : "#151821");
         var secondaryBrush = CreateBrush(_isNightVisual ? "#848B99" : "#667084");
-        var currentBrush = CreateBrush("#FF4D5A");
+        var currentBrush = useMonetColor
+            ? CreateBrush("#FF4FC3F7")
+            : 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
@@ -438,9 +597,22 @@ public partial class ClassScheduleWidget : UserControl, IDesktopComponentWidget,
 
     private void ApplyAdaptiveLayout()
     {
+        if (Bounds.Width <= 0 || Bounds.Height <= 0)
+        {
+            return;
+        }
+
         var scale = ResolveScale();
         _isNightVisual = ResolveNightMode();
 
+        var useMonetColor = ComponentColorSchemeHelper.ShouldUseMonetColor(
+            _componentColorScheme,
+            ComponentColorSchemeHelper.GetCurrentGlobalThemeColorMode());
+
+        var slashBrush = useMonetColor
+            ? CreateBrush("#FF4FC3F7")
+            : CreateBrush("#FF3250");
+
         var cornerRadius = Math.Clamp(_currentCellSize * 0.45, 24, 44);
         RootBorder.CornerRadius = new CornerRadius(cornerRadius);
         RootBorder.Background = _isNightVisual
@@ -468,7 +640,7 @@ public partial class ClassScheduleWidget : UserControl, IDesktopComponentWidget,
 
         MonthTextBlock.Foreground = CreateBrush(_isNightVisual ? "#F8FAFF" : "#131722");
         DayTextBlock.Foreground = CreateBrush(_isNightVisual ? "#F8FAFF" : "#131722");
-        SlashTextBlock.Foreground = CreateBrush("#FF3250");
+        SlashTextBlock.Foreground = slashBrush;
         WeekdayTextBlock.Foreground = CreateBrush(_isNightVisual ? "#C6CBD5" : "#4B5463");
         ClassCountTextBlock.Foreground = CreateBrush(_isNightVisual ? "#8D95A4" : "#738095");
         StatusTextBlock.Foreground = CreateBrush(_isNightVisual ? "#9AA2B1" : "#4B5565");

LanMountainDesktop/Views/Components/DesktopComponentRuntimeRegistry.cs

@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Reflection;
@@ -439,6 +439,11 @@ public sealed class DesktopComponentRuntimeRegistry
                     "component.browser",
                     () => new BrowserWidget(),
                     cellSize => Math.Clamp(cellSize * 0.24, 10, 24)),
+                new DesktopComponentRuntimeRegistration(
+                    BuiltInComponentIds.DesktopOfficeRecentDocuments,
+                    "component.office_recent_documents",
+                    () => new OfficeRecentDocumentsWidget(),
+                    cellSize => Math.Clamp(cellSize * 0.50, 10, 24)),
                 new DesktopComponentRuntimeRegistration(
                     BuiltInComponentIds.HolidayCalendar,
                     "component.holiday_calendar",

LanMountainDesktop/Views/Components/OfficeRecentDocumentViewModel.cs

@@ -0,0 +1,10 @@
+using System;
+
+namespace LanMountainDesktop.Views.Components;
+
+public sealed class OfficeRecentDocumentViewModel
+{
+    public string FileName { get; set; } = string.Empty;
+    public string FilePath { get; set; } = string.Empty;
+    public string TimeAgo { get; set; } = string.Empty;
+}

LanMountainDesktop/Views/Components/OfficeRecentDocumentsWidget.axaml

@@ -0,0 +1,108 @@
+<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"
+             xmlns:vm="using:LanMountainDesktop.Views.Components"
+             mc:Ignorable="d"
+             d:DesignWidth="640"
+             d:DesignHeight="320"
+             x:Class="LanMountainDesktop.Views.Components.OfficeRecentDocumentsWidget">
+
+    <Border x:Name="RootBorder"
+            CornerRadius="34"
+            Background="#2D5A8E"
+            ClipToBounds="True"
+            BorderThickness="0"
+            Padding="0">
+        <Grid>
+            <Border x:Name="AccentCorner"
+                    Width="140"
+                    Height="140"
+                    HorizontalAlignment="Right"
+                    VerticalAlignment="Top"
+                    Margin="0,-40,-40,0"
+                    CornerRadius="70"
+                    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="#D8FFFFFF"
+                               FontSize="18"
+                               FontWeight="SemiBold"
+                               VerticalAlignment="Center" />
+                    <Button x:Name="RefreshButton"
+                            Grid.Column="1"
+                            Width="28"
+                            Height="28"
+                            CornerRadius="14"
+                            Background="Transparent"
+                            BorderBrush="Transparent"
+                            BorderThickness="0"
+                            Padding="0"
+                            Focusable="False"
+                            PointerPressed="OnRefreshPointerPressed">
+                        <fi:SymbolIcon Symbol="ArrowSync"
+                                       FontSize="14"
+                                       Foreground="#B8FFFFFF" />
+                    </Button>
+                </Grid>
+
+                <ScrollViewer Grid.Row="1"
+                              HorizontalScrollBarVisibility="Auto"
+                              VerticalScrollBarVisibility="Disabled"
+                              Margin="0,4,0,0">
+                    <ItemsControl x:Name="DocumentsItemsControl">
+                        <ItemsControl.ItemsPanel>
+                            <ItemsPanelTemplate>
+                                <StackPanel Orientation="Horizontal" Spacing="8" />
+                            </ItemsPanelTemplate>
+                        </ItemsControl.ItemsPanel>
+                        <ItemsControl.ItemTemplate>
+                            <DataTemplate x:DataType="vm:OfficeRecentDocumentViewModel">
+                                <Border x:Name="DocumentCard"
+                                        Width="130"
+                                        Height="90"
+                                        CornerRadius="10"
+                                        Background="#3AFFFFFF"
+                                        Padding="10"
+                                        Cursor="Hand"
+                                        PointerPressed="OnDocumentCardPointerPressed">
+                                    <Grid RowDefinitions="Auto,*,Auto">
+                                        <TextBlock Grid.Row="0"
+                                                   Text="{Binding FileName}"
+                                                   Foreground="#D8FFFFFF"
+                                                   FontSize="12"
+                                                   FontWeight="Medium"
+                                                   TextTrimming="CharacterEllipsis"
+                                                   MaxLines="2"
+                                                   TextWrapping="Wrap"
+                                                   VerticalAlignment="Top" />
+                                        <TextBlock Grid.Row="2"
+                                                   Text="{Binding TimeAgo}"
+                                                   Foreground="#9AFFFFFF"
+                                                   FontSize="10"
+                                                   TextTrimming="CharacterEllipsis"
+                                                   MaxLines="1" />
+                                    </Grid>
+                                </Border>
+                            </DataTemplate>
+                        </ItemsControl.ItemTemplate>
+                    </ItemsControl>
+                </ScrollViewer>
+            </Grid>
+
+            <TextBlock x:Name="StatusTextBlock"
+                       IsVisible="False"
+                       Text="暂无最近文档"
+                       Foreground="#9AFFFFFF"
+                       FontSize="14"
+                       HorizontalAlignment="Center"
+                       VerticalAlignment="Center" />
+        </Grid>
+    </Border>
+</UserControl>

LanMountainDesktop/Views/Components/OfficeRecentDocumentsWidget.axaml.cs

@@ -0,0 +1,124 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using Avalonia.Controls;
+using Avalonia.Input;
+using LanMountainDesktop.Services;
+using LanMountainDesktop.Views.Components;
+
+namespace LanMountainDesktop.Views.Components;
+
+public partial class OfficeRecentDocumentsWidget : UserControl, IDesktopComponentWidget, IDesktopPageVisibilityAwareComponentWidget
+{
+    private readonly IOfficeRecentDocumentsService _recentDocumentsService;
+    private List<OfficeRecentDocument> _documents = new();
+    private bool _isOnActivePage;
+    private bool _isEditMode;
+    private bool _isLoading;
+
+    public OfficeRecentDocumentsWidget()
+    {
+        InitializeComponent();
+        _recentDocumentsService = new OfficeRecentDocumentsService();
+    }
+
+    public void ApplyCellSize(double cellSize)
+    {
+        if (RootBorder is null)
+        {
+            return;
+        }
+
+        var scale = cellSize / 100.0;
+        RootBorder.CornerRadius = new Avalonia.CornerRadius(Math.Max(8, 34 * scale));
+    }
+
+    public void SetDesktopPageContext(bool isOnActivePage, bool isEditMode)
+    {
+        _isOnActivePage = isOnActivePage;
+        _isEditMode = isEditMode;
+
+        if (_isOnActivePage && !_isLoading)
+        {
+            LoadDocuments();
+        }
+    }
+
+    private void LoadDocuments()
+    {
+        try
+        {
+            _isLoading = true;
+            StatusTextBlock.IsVisible = false;
+
+            _documents = _recentDocumentsService.GetRecentDocuments(20);
+
+            if (_documents.Count == 0)
+            {
+                StatusTextBlock.Text = "暂无最近文档";
+                StatusTextBlock.IsVisible = true;
+                return;
+            }
+
+            UpdateDisplay();
+        }
+        catch
+        {
+            StatusTextBlock.Text = "加载失败";
+            StatusTextBlock.IsVisible = true;
+        }
+        finally
+        {
+            _isLoading = false;
+        }
+    }
+
+    private void UpdateDisplay()
+    {
+        var displayItems = _documents.Select(d => new OfficeRecentDocumentViewModel
+        {
+            FileName = d.FileName,
+            FilePath = d.FilePath,
+            TimeAgo = GetTimeAgo(d.LastModifiedTime)
+        }).ToList();
+
+        DocumentsItemsControl.ItemsSource = displayItems;
+    }
+
+    private static string GetTimeAgo(DateTime dateTime)
+    {
+        var span = DateTime.Now - dateTime;
+
+        if (span.TotalMinutes < 1)
+            return "刚刚";
+        if (span.TotalMinutes < 60)
+            return $"{(int)span.TotalMinutes} 分钟前";
+        if (span.TotalHours < 24)
+            return $"{(int)span.TotalHours} 小时前";
+        if (span.TotalDays < 7)
+            return $"{(int)span.TotalDays} 天前";
+        if (span.TotalDays < 30)
+            return $"{(int)(span.TotalDays / 7)} 周前";
+
+        return dateTime.ToString("MM/dd");
+    }
+
+    private void OnRefreshPointerPressed(object? sender, PointerPressedEventArgs e)
+    {
+        LoadDocuments();
+    }
+
+    private void OnDocumentCardPointerPressed(object? sender, PointerPressedEventArgs e)
+    {
+        if (sender is Border border && border.DataContext is { } data)
+        {
+            var filePathProperty = data.GetType().GetProperty("FilePath");
+            var filePath = filePathProperty?.GetValue(data) as string;
+
+            if (!string.IsNullOrEmpty(filePath))
+            {
+                _recentDocumentsService.OpenDocument(filePath);
+            }
+        }
+    }
+}

LanMountainDesktop/Views/Components/StudyEnvironmentWidget.axaml.cs

@@ -4,6 +4,7 @@ using Avalonia;
 using Avalonia.Controls;
 using Avalonia.Media;
 using Avalonia.Threading;
+using LanMountainDesktop.ComponentSystem;
 using LanMountainDesktop.Models;
 using LanMountainDesktop.Services;
 
@@ -24,6 +25,7 @@ public partial class StudyEnvironmentWidget : UserControl, IDesktopComponentWidg
     private double _currentCellSize = 48;
     private bool _showDisplayDb = true;
     private bool _showDbfs;
+    private string? _componentColorScheme;
     private string _languageCode = "zh-CN";
     private bool _isAttached;
     private bool _isOnActivePage = true;
@@ -147,6 +149,7 @@ public partial class StudyEnvironmentWidget : UserControl, IDesktopComponentWidg
         _languageCode = _localizationService.NormalizeLanguageCode(appSnapshot.LanguageCode);
         _showDisplayDb = componentSnapshot.StudyEnvironmentShowDisplayDb;
         _showDbfs = componentSnapshot.StudyEnvironmentShowDbfs;
+        _componentColorScheme = componentSnapshot.ColorSchemeSource;
         if (!_showDisplayDb && !_showDbfs)
         {
             _showDisplayDb = true;
@@ -287,22 +290,26 @@ public partial class StudyEnvironmentWidget : UserControl, IDesktopComponentWidg
 
     private IBrush ResolveStatusBrush(StudyAnalyticsSnapshot snapshot)
     {
+        var useMonetColor = ComponentColorSchemeHelper.ShouldUseMonetColor(
+            _componentColorScheme,
+            ComponentColorSchemeHelper.GetCurrentGlobalThemeColorMode());
+
         if (snapshot.State == StudyAnalyticsRuntimeState.Unsupported ||
             snapshot.State == StudyAnalyticsRuntimeState.Error ||
             snapshot.StreamStatus == NoiseStreamStatus.Error)
         {
-            return CreateBrush("#FFFF7B7B");
+            return useMonetColor ? CreateBrush("#FF6FD7A2") : CreateBrush("#FFFF7B7B");
         }
 
         if (snapshot.StreamStatus == NoiseStreamStatus.Noisy)
         {
-            return CreateBrush("#FFFFB14A");
+            return useMonetColor ? CreateBrush("#FF4FC3F7") : CreateBrush("#FFFFB14A");
         }
 
         if (snapshot.State == StudyAnalyticsRuntimeState.Running &&
             snapshot.StreamStatus == NoiseStreamStatus.Quiet)
         {
-            return CreateBrush("#FF6FD7A2");
+            return useMonetColor ? CreateBrush("#FF81C784") : CreateBrush("#FF6FD7A2");
         }
 
         return TryResolveThemeBrush("AdaptiveTextPrimaryBrush", "#FFEFF3FF");

LanMountainDesktop/Views/MainWindow.ComponentSystem.cs

@@ -964,6 +964,7 @@ public partial class MainWindow
         DisposeComponentIfNeeded(host);
         contentHost.Child = component;
         ApplyDesktopEditStateToHost(host, _isComponentLibraryOpen);
+        InvalidateDesktopPageAwareComponentContextCache();
         UpdateDesktopPageAwareComponentContext();
         if (_selectedDesktopComponentHost == host)
         {
@@ -1102,6 +1103,7 @@ 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 +1206,7 @@ public partial class MainWindow
         pageGrid.Children.Add(host);
 
         _desktopComponentPlacements.Add(placement);
+        InvalidateDesktopPageAwareComponentContextCache();
         UpdateDesktopPageAwareComponentContext();
         PersistSettings();
 
@@ -1577,14 +1580,86 @@ 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 +1673,10 @@ public partial class MainWindow
                 }
             }
         }
+
+        _desktopPageContextInitialized = true;
+        _desktopPageContextEditMode = isEditMode;
+        _desktopPageContextActiveMask = activeMask;
     }
 
     private static void ApplyDesktopPageContext(Control root, bool isOnActivePage, bool isEditMode)
@@ -2702,6 +2781,11 @@ public partial class MainWindow
             return Symbol.Apps;
         }
 
+        if (string.Equals(categoryId, "File", StringComparison.OrdinalIgnoreCase))
+        {
+            return Symbol.Folder;
+        }
+
         return Symbol.Apps;
     }
 
@@ -2747,6 +2831,11 @@ 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

@@ -16,8 +16,6 @@ using LanMountainDesktop.PluginSdk;
 using LanMountainDesktop.Services;
 using LanMountainDesktop.Theme;
 using LanMountainDesktop.Views.Components;
-using LibVLCSharp.Shared;
-using LibVLCSharp.Avalonia;
 
 namespace LanMountainDesktop.Views;
 
@@ -34,6 +32,11 @@ public partial class MainWindow
     {
         _ = sender;
 
+        if (_suppressOwnSettingsReloadCount > 0)
+        {
+            return;
+        }
+
         if (e.Scope == SettingsScope.App && e.ChangedKeys is { Count: > 0 })
         {
             var changedKeys = e.ChangedKeys.ToArray();
@@ -213,7 +216,6 @@ 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 +237,6 @@ 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 +276,6 @@ public partial class MainWindow
         if (_wallpaperMediaType == WallpaperMediaType.SolidColor && _wallpaperSolidColor.HasValue)
         {
             DesktopWallpaperLayer.Background = new SolidColorBrush(_wallpaperSolidColor.Value);
-            ApplyVideoWallpaperPosterVisibility(showPoster: false);
             return;
         }
 
@@ -296,7 +286,6 @@ public partial class MainWindow
             DesktopWallpaperLayer.Background = _defaultDesktopBackground ?? CreateNeutralWallpaperFallbackBrush();
             DesktopWallpaperImageLayer.Background = WallpaperImageBrushFactory.Create(_wallpaperBitmap, _wallpaperPlacement);
             DesktopWallpaperImageLayer.IsVisible = true;
-            ApplyVideoWallpaperPosterVisibility(showPoster: false);
             return;
         }
 
@@ -308,92 +297,17 @@ 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 +387,7 @@ public partial class MainWindow
 
     private void PersistSettings()
     {
+        _persistSettingsRevision++;
         if (_suppressSettingsPersistence)
         {
             return;
@@ -480,6 +395,8 @@ 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 +405,29 @@ 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 +499,7 @@ 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 +531,8 @@ 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,
@@ -644,112 +581,6 @@ 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

@@ -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>

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>();
@@ -177,6 +153,8 @@ 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 +311,9 @@ 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/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>