diff --git a/.gitignore b/.gitignore
index 56e5892..8f095ce 100644
--- a/.gitignore
+++ b/.gitignore
@@ -518,3 +518,4 @@ nul
 /velopack-output-local-verify
 /velopack-output-local
 /test-aot-publish
+/.claude/worktrees
diff --git a/.trae/documents/class-schedule-widget-redesign.md b/.trae/documents/class-schedule-widget-redesign.md
new file mode 100644
index 0000000..f687fae
--- /dev/null
+++ b/.trae/documents/class-schedule-widget-redesign.md
@@ -0,0 +1,403 @@
+# 课程表组件视觉重构 Implementation Plan
+
+> **For agentic workers:** REQUIRED SUB-SKILL: Use superpowers:subagent-driven-development (recommended) or superpowers:executing-plans to implement this plan task-by-task. Steps use checkbox (`- [ ]`) syntax for tracking.
+
+**Goal:** 彻底重构阑山桌面的课程表（ClassScheduleWidget）组件视觉设计，参考小爱课程表的桌面小部件风格，实现时间轴+色块卡片布局、科目自动配色、当前课程进度高亮等现代化视觉效果。
+
+**Architecture:** 保留现有数据层（ClassIslandScheduleDataService、Models）和组件注册机制不变，仅重构 Widget 的 UI 渲染层（XAML + code-behind 中的渲染逻辑）。新增科目配色服务，为每门课程分配稳定的区分色。先创建 HTML Mock 验证视觉效果，再移植到 Avalonia XAML。
+
+**Tech Stack:** Avalonia UI (XAML + C# code-behind)、HTML/CSS (Mock 预览)
+
+---
+
+## 当前状态分析
+
+### 现有组件结构
+- **XAML**: `ClassScheduleWidget.axaml` — 仅定义了 RootBorder、HeaderGrid（日期+星期+课数）、ScrollViewer+CourseListPanel、StatusTextBlock
+- **Code-behind**: `ClassScheduleWidget.axaml.cs` — 所有课程项 UI 在 `CreateSingleItemControl()` 中手动构建：圆点(Bullet) + 文字栈（课程名/时间/详情）
+- **数据层**: `ClassIslandScheduleDataService` + `ClassIslandScheduleModels` — 不变
+- **编辑器**: `ClassScheduleComponentEditor.axaml(.cs)` — 不变
+
+### 现有设计问题
+1. **视觉单调**: 仅用小圆点区分课程，所有课程外观一致，缺乏层次感
+2. **信息密度低**: 课程名、时间、教师名挤在一行，可读性差
+3. **当前课不突出**: 仅通过圆点颜色变化标识当前课程，几乎无法一眼识别
+4. **色彩硬编码**: 颜色值直接写在 C# 中，不使用语义资源键，不遵循 VISUAL_SPEC
+5. **无时间轴感**: 列表式排列无法体现课程的时间先后和持续长度
+
+### 小爱课程表参考设计特征
+1. **时间轴布局**: 左侧显示时间刻度，右侧是课程色块卡片
+2. **科目配色**: 每门课程自动分配一种柔和区分色，卡片使用对应色块背景
+3. **当前课高亮**: 正在进行的课程有明显的视觉强调（放大/进度条/发光）
+4. **进度指示**: 当前课程显示上课进度（已过时间/总时长）
+5. **紧凑信息**: 课程名+教室/教师信息在色块内清晰排列
+6. **课间分隔**: 课间休息区域有视觉分隔（虚线/淡色区域）
+
+---
+
+## 设计方案
+
+### 视觉论文 (Visual Thesis)
+时间轴驱动的色块卡片布局，柔和科目配色，当前课程进度高亮——在桌面小组件有限空间内实现信息密度与美感的平衡。
+
+### 布局结构
+```
+┌─────────────────────────────────────┐
+│  7/24  周一          今天3节课       │  ← 头部：日期 + 星期 + 课数
+├─────────────────────────────────────┤
+│  08:00 ┌──────────────────────┐     │
+│        │  语文                │     │  ← 科目色块卡片
+│        │  王老师 · 教室301     │     │
+│  08:45 └──────────────────────┘     │
+│        ┌──────────────────────┐     │
+│        │  数学 ████████░░ 75% │     │  ← 当前课：进度条 + 高亮
+│        │  李老师 · 教室205     │     │
+│  09:30 └──────────────────────┘     │
+│  ...                                │
+└─────────────────────────────────────┘
+```
+
+### 科目配色方案
+使用一组预定义的柔和色彩，按科目名哈希值稳定分配：
+- 语文: #5B8FF9 (蓝)
+- 数学: #F6903D (橙)
+- 英语: #5AD8A6 (绿)
+- 物理: #E8684A (红)
+- 化学: #9270CA (紫)
+- 生物: #FF9845 (琥珀)
+- 历史: #1E9493 (青)
+- 地理: #FF99C3 (粉)
+- 政治: #7262FD (靛)
+- 体育: #78D3F8 (天蓝)
+- 默认: #8B95A5 (灰)
+
+### 当前课程高亮
+- 卡片左侧显示 3px 宽的强调色竖条
+- 卡片底部显示细进度条（已过时间/总时长）
+- 卡片背景使用科目色的 15% 透明度版本
+- 非当前课程使用科目色的 8% 透明度版本
+
+---
+
+## 文件变更清单
+
+| 文件 | 操作 | 说明 |
+|------|------|------|
+| `LanMountainDesktop/Views/Components/ClassScheduleWidget.axaml` | 修改 | 重构 XAML 布局：时间轴+卡片区域 |
+| `LanMountainDesktop/Views/Components/ClassScheduleWidget.axaml.cs` | 修改 | 重构渲染逻辑：色块卡片、科目配色、进度条 |
+| `LanMountainDesktop/Views/Components/SubjectColorService.cs` | 新建 | 科目配色服务：稳定哈希分配颜色 |
+| `mocks/class-schedule-mock.html` | 新建 | HTML Mock 预览（亮色+暗色） |
+
+---
+
+## Task 分解
+
+### Task 1: 创建 HTML Mock 预览
+
+**Files:**
+- Create: `mocks/class-schedule-mock.html`
+
+- [ ] **Step 1: 创建 HTML Mock 文件**
+
+创建完整的 HTML Mock，包含：
+- 亮色/暗色主题切换
+- 时间轴+色块卡片布局
+- 科目自动配色
+- 当前课程进度条高亮
+- 课间分隔区域
+- 响应式尺寸（模拟桌面组件 2x4 / 4x4 等尺寸）
+
+Mock 中应包含示例数据：
+```
+08:00-08:45  语文  王老师
+08:55-09:40  数学  李老师 (当前课，进度 60%)
+09:50-10:35  英语  张老师
+10:45-11:30  物理  赵老师
+14:00-14:45  化学  陈老师
+14:55-15:40  生物  刘老师
+```
+
+- [ ] **Step 2: 在浏览器中打开 Mock 验证效果**
+
+Run: `start mocks/class-schedule-mock.html`
+
+- [ ] **Step 3: 根据视觉效果调整 Mock 细节**
+
+调整间距、色值、字体大小、进度条样式等直到满意。
+
+---
+
+### Task 2: 创建科目配色服务
+
+**Files:**
+- Create: `LanMountainDesktop/Views/Components/SubjectColorService.cs`
+
+- [ ] **Step 1: 实现 SubjectColorService**
+
+```csharp
+using System;
+using Avalonia.Media;
+
+namespace LanMountainDesktop.Views.Components;
+
+internal static class SubjectColorService
+{
+    private static readonly (string Name, string Hex)[] Palette = [
+        ("语文", "#5B8FF9"),
+        ("数学", "#F6903D"),
+        ("英语", "#5AD8A6"),
+        ("物理", "#E8684A"),
+        ("化学", "#9270CA"),
+        ("生物", "#FF9845"),
+        ("历史", "#1E9493"),
+        ("地理", "#FF99C3"),
+        ("政治", "#7262FD"),
+        ("体育", "#78D3F8"),
+        ("音乐", "#F25E7E"),
+        ("美术", "#C2A1FD"),
+    ];
+
+    private static readonly string DefaultHex = "#8B95A5";
+
+    public static Color ResolveColor(string subjectName)
+    {
+        foreach (var (name, hex) in Palette)
+        {
+            if (subjectName.Contains(name, StringComparison.OrdinalIgnoreCase))
+            {
+                return Color.Parse(hex);
+            }
+        }
+
+        var hash = StableHash(subjectName);
+        var index = (int)(hash % (uint)Palette.Length);
+        return Color.Parse(Palette[index].Hex);
+    }
+
+    public static Color ResolveBackgroundColor(string subjectName, bool isCurrent, bool isNight)
+    {
+        var baseColor = ResolveColor(subjectName);
+        var alpha = isCurrent ? 0.18 : 0.08;
+        return new Color(
+            (byte)(alpha * 255),
+            baseColor.R,
+            baseColor.G,
+            baseColor.B);
+    }
+
+    public static Color ResolveForegroundColor(string subjectName, bool isNight)
+    {
+        var baseColor = ResolveColor(subjectName);
+        return isNight
+            ? new Color(0xFF, (byte)Math.Min(255, baseColor.R + 60), (byte)Math.Min(255, baseColor.G + 60), (byte)Math.Min(255, baseColor.B + 60))
+            : baseColor;
+    }
+
+    private static uint StableHash(string input)
+    {
+        uint hash = 5381;
+        foreach (var c in input)
+        {
+            hash = ((hash << 5) + hash) ^ (uint)c;
+        }
+        return hash;
+    }
+}
+```
+
+- [ ] **Step 2: 验证编译通过**
+
+Run: `dotnet build LanMountainDesktop/LanMountainDesktop.csproj -c Debug --no-restore`
+
+---
+
+### Task 3: 重构 ClassScheduleWidget XAML 布局
+
+**Files:**
+- Modify: `LanMountainDesktop/Views/Components/ClassScheduleWidget.axaml`
+
+- [ ] **Step 1: 重写 XAML 布局**
+
+新的 XAML 结构：
+- RootBorder 保持 `DesignCornerRadiusComponent`
+- 头部区域：日期（大号）+ 星期 + 课数 + 进度摘要
+- 课程列表区域：ScrollViewer 包裹 StackPanel
+- 每个 CourseItem 将在 code-behind 中构建为：Grid(时间列 + 卡片列)
+  - 时间列：StartTime / EndTime 垂直排列
+  - 卡片列：Border(科目色背景) > StackPanel(课程名 + 教师信息 + 进度条)
+
+XAML 只定义骨架，课程项仍由 code-behind 动态构建（因为需要科目配色和进度计算）。
+
+```xml
+<UserControl xmlns="https://github.com/avaloniaui"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             x:Class="LanMountainDesktop.Views.Components.ClassScheduleWidget">
+    <Border x:Name="RootBorder"
+            Background="{DynamicResource AdaptiveSurfaceRaisedBrush}"
+            BorderBrush="{DynamicResource AdaptiveButtonBorderBrush}"
+            BorderThickness="1"
+            CornerRadius="{DynamicResource DesignCornerRadiusComponent}"
+            Padding="0">
+        <Grid x:Name="LayoutGrid"
+              RowDefinitions="Auto,*">
+            <Grid x:Name="HeaderGrid"
+                  ColumnDefinitions="Auto,*,Auto"
+                  Padding="16,12,16,8">
+                <StackPanel x:Name="DateGroup"
+                            Orientation="Horizontal"
+                            VerticalAlignment="Center">
+                    <TextBlock x:Name="MonthTextBlock"
+                               FontWeight="Bold"
+                               TextTrimming="CharacterEllipsis" />
+                    <TextBlock x:Name="SlashTextBlock"
+                               Text="/"
+                               FontWeight="Bold" />
+                    <TextBlock x:Name="DayTextBlock"
+                               FontWeight="Bold"
+                               TextTrimming="CharacterEllipsis" />
+                </StackPanel>
+                <TextBlock x:Name="WeekdayTextBlock"
+                           Grid.Column="1"
+                           HorizontalAlignment="Center"
+                           VerticalAlignment="Center"
+                           FontWeight="SemiBold"
+                           TextTrimming="CharacterEllipsis" />
+                <Border x:Name="ClassCountBadge"
+                        Grid.Column="2"
+                        VerticalAlignment="Center"
+                        Padding="8,3"
+                        CornerRadius="{DynamicResource DesignCornerRadiusMicro}">
+                    <TextBlock x:Name="ClassCountTextBlock"
+                               FontWeight="SemiBold"
+                               TextTrimming="CharacterEllipsis" />
+                </Border>
+            </Grid>
+            <ScrollViewer x:Name="ContentScrollViewer"
+                          Grid.Row="1"
+                          HorizontalScrollBarVisibility="Disabled"
+                          VerticalScrollBarVisibility="Auto">
+                <StackPanel x:Name="CourseListPanel"
+                            Spacing="4" />
+            </ScrollViewer>
+            <TextBlock x:Name="StatusTextBlock"
+                       Grid.Row="1"
+                       HorizontalAlignment="Center"
+                       VerticalAlignment="Center"
+                       TextAlignment="Center"
+                       IsVisible="False"
+                       TextWrapping="Wrap" />
+        </Grid>
+    </Border>
+</UserControl>
+```
+
+---
+
+### Task 4: 重构 ClassScheduleWidget 渲染逻辑
+
+**Files:**
+- Modify: `LanMountainDesktop/Views/Components/ClassScheduleWidget.axaml.cs`
+
+- [ ] **Step 1: 扩展 CourseItemViewModel**
+
+在现有 record 中增加字段：
+
+```csharp
+private sealed record CourseItemViewModel(
+    string Name,
+    string TimeRange,
+    string Detail,
+    bool IsCurrent,
+    TimeSpan StartTime,
+    TimeSpan EndTime,
+    double Progress);
+```
+
+- [ ] **Step 2: 修改 BuildCourseItemViewModels 计算进度**
+
+在构建 ViewModel 时，对当前课程计算 Progress = (now - startTime) / (endTime - startTime)。
+
+- [ ] **Step 3: 重写 CreateSingleItemControl**
+
+新的课程项 UI 结构：
+
+```
+Grid (2列: 时间列 Auto + 卡片列 *)
+├── StackPanel (时间列)
+│   ├── TextBlock (开始时间, 如 "08:00")
+│   └── TextBlock (结束时间, 如 "08:45", 较淡)
+└── Border (卡片列, 科目色背景, 圆角 DesignCornerRadiusSm)
+    ├── 左侧强调竖条 (当前课显示, 3px宽, 科目色)
+    └── StackPanel
+        ├── TextBlock (课程名, 科目色前景, 加粗)
+        ├── TextBlock (教师/教室, 次要色)
+        └── ProgressBar (当前课显示, 科目色)
+```
+
+关键改动点：
+1. 移除圆点(Bullet)，改用时间轴左侧时间标签
+2. 课程卡片使用 `SubjectColorService` 配色
+3. 当前课程卡片左侧显示强调竖条 + 底部进度条
+4. 课间区域用淡色分隔线标识
+5. 颜色使用语义资源键（`AdaptiveTextPrimaryBrush` 等），科目色通过 `SubjectColorService` 获取
+
+- [ ] **Step 4: 重写 ApplyAdaptiveLayout**
+
+更新自适应布局逻辑：
+- 头部日期/星期/课数徽章的字号和间距
+- 移除旧的圆点、文字栈相关计算
+- 新增时间列宽度、卡片圆角、进度条高度等计算
+- 使用 `ComponentChromeCornerRadiusHelper` 获取圆角 Token
+
+- [ ] **Step 5: 更新 IncrementalUpdateItems 和 IncrementalUpdateCurrentCourseHighlight**
+
+适配新的 UI 结构：
+- 更新进度条值
+- 更新科目色背景
+- 更新强调竖条可见性
+
+- [ ] **Step 6: 更新 RefreshSchedule 中的时间计算**
+
+在 `BuildCourseItemViewModels` 中传入 `StartTime`/`EndTime`/`Progress`。
+
+- [ ] **Step 7: 验证编译通过**
+
+Run: `dotnet build LanMountainDesktop/LanMountainDesktop.csproj -c Debug`
+
+---
+
+### Task 5: 验证与测试
+
+- [ ] **Step 1: 运行项目查看效果**
+
+Run: `dotnet run --project LanMountainDesktop/LanMountainDesktop.csproj`
+
+- [ ] **Step 2: 运行相关测试**
+
+Run: `dotnet test LanMountainDesktop.slnx -c Debug`
+
+- [ ] **Step 3: 检查圆角规范合规**
+
+确认 RootBorder 使用 `DesignCornerRadiusComponent`，内部卡片使用 `DesignCornerRadiusSm`/`DesignCornerRadiusMd`，无硬编码圆角值。
+
+---
+
+## 假设与决策
+
+1. **科目配色**: 使用预定义调色板 + 哈希回退，不依赖 ClassIsland 数据中的科目颜色（因为 ClassIsland 不提供科目颜色字段）
+2. **进度条**: 仅当前课程显示进度条，非当前课程不显示
+3. **课间分隔**: 用 4px 间距 + 可选的淡色虚线分隔，不做复杂的课间休息区域
+4. **Mock 优先**: 先完成 HTML Mock 确认视觉效果，再实现 Avalonia 代码
+5. **编辑器不变**: ClassScheduleComponentEditor 不需要修改
+6. **数据层不变**: ClassIslandScheduleDataService 和 Models 不需要修改
+7. **接口兼容**: IDesktopComponentWidget、ITimeZoneAwareComponentWidget、IComponentPlacementContextAware 接口实现不变
+
+## 验证步骤
+
+1. HTML Mock 在浏览器中展示效果满意
+2. Avalonia 项目编译通过
+3. 运行项目，课程表组件显示新布局
+4. 亮色/暗色主题切换正常
+5. 当前课程高亮和进度条正常
+6. 科目配色稳定（同一科目每次显示颜色一致）
+7. 测试通过
diff --git a/.trae/documents/launcher_improved_plan_v2.md b/.trae/documents/launcher_improved_plan_v2.md
index b9874c5..0541a50 100644
--- a/.trae/documents/launcher_improved_plan_v2.md
+++ b/.trae/documents/launcher_improved_plan_v2.md
@@ -154,7 +154,7 @@
 │                                                                             │
 │  方案 2: 命名管道（推荐用于进度报告）                                           │
 │  ┌─────────────────────────────────────────────────────────────────────┐   │
-│  │  Launcher 创建命名管道: \\.\pipe\LanMountainDesktop_Launcher          │   │
+│  │  [历史方案] Launcher 创建命名管道: \\.\pipe\LanMountainDesktop_Launcher │   │
 │  │  主程序连接并发送进度消息                                              │   │
 │  │                                                                      │   │
 │  │  消息格式: JSON                                                       │   │
@@ -289,7 +289,7 @@ public static class LauncherIpcConstants
 
 #### 4. 实现 IPC 服务端
 
-**新建文件**: `LanMountainDesktop.Launcher/Services/Ipc/LauncherIpcServer.cs`
+**历史方案，已废弃**: `LanMountainDesktop.Launcher/Services/Ipc/LauncherIpcServer.cs`
 
 ```csharp
 using System.IO.Pipes;
@@ -428,7 +428,7 @@ public async Task<LauncherResult> RunAsync()
 
 #### 6. 实现 IPC 客户端
 
-**新建文件**: `LanMountainDesktop/Services/Launcher/LauncherIpcClient.cs`
+**历史方案，已废弃**: `LanMountainDesktop/Services/Launcher/LauncherIpcClient.cs`
 
 ```csharp
 using System.IO.Pipes;
@@ -672,8 +672,8 @@ public class UpdateInstallationService
 ### 新增文件
 
 1. `LanMountainDesktop.Shared.Contracts/Launcher/LauncherIpc.cs` - IPC 契约
-2. `LanMountainDesktop.Launcher/Services/Ipc/LauncherIpcServer.cs` - IPC 服务端
-3. `LanMountainDesktop/Services/Launcher/LauncherIpcClient.cs` - IPC 客户端
+2. `LanMountainDesktop.Launcher/Services/Ipc/LauncherIpcServer.cs` - 历史启动进度 IPC 服务端，已由公共 IPC 通知替代
+3. `LanMountainDesktop/Services/Launcher/LauncherIpcClient.cs` - 历史启动进度 IPC 客户端，已由公共 IPC 通知替代
 4. `LanMountainDesktop.Launcher/Services/Update/UpdateInstallationService.cs` - 更新安装
 
 ### 删除文件
@@ -715,3 +715,11 @@ public class UpdateInstallationService
 - [ ] GitHub Actions 打包成功
 - [ ] 安装程序图标正常
 - [ ] 快捷方式图标正常
+
+## 2026 Multi-instance Policy Update
+
+- The old launcher progress pipe is historical only; current startup progress uses public IPC.
+- Launcher now reads Host `settings.json` for `MultiInstanceLaunchBehavior` before normal launch.
+- Existing Host behavior is policy-driven: restart app, open desktop silently, prompt only, or notify and open desktop.
+- Host no longer owns the single-instance listener or already-running prompt; repeated-launch policy lives in Launcher.
+- The repeated-launch prompt is a Fluent Launcher window; Host public IPC only exposes execution actions such as activate, restart, and exit.
diff --git a/.trae/documents/update-settings-redesign.md b/.trae/documents/update-settings-redesign.md
new file mode 100644
index 0000000..c049ec5
--- /dev/null
+++ b/.trae/documents/update-settings-redesign.md
@@ -0,0 +1,212 @@
+# 更新设置界面重设计实施计划
+
+> **For agentic workers:** REQUIRED SUB-SKILL: Use superpowers:executing-plans to implement this plan task-by-task. Steps use checkbox (`- [ ]`) syntax for tracking.
+
+**Goal:** 将更新设置页面从丑陋的卡片堆叠布局重设计为遵循 Fluent Design 的 FASettingsExpander 列表布局，与项目其他设置页面保持视觉一致性。
+
+**Architecture:** 移除所有 `Border.settings-section-card` 包裹，改用 `FASettingsExpander` + `IconText` 分节标题 + `Separator` 分隔线的统一模式。操作按钮改为仅显示当前可用操作。版本信息改为 `FASettingsExpanderItem` 行项目展示。ViewModel 层新增 `ActiveActions` 计算属性来驱动按钮可见性。
+
+**Tech Stack:** Avalonia UI 11, FluentAvalonia 2.x, CommunityToolkit.Mvvm
+
+---
+
+## 当前状态分析
+
+### 现有文件
+
+| 文件 | 职责 |
+|------|------|
+| `LanMountainDesktop/Views/SettingsPages/UpdateSettingsPage.axaml` | 更新页面 AXAML 布局 |
+| `LanMountainDesktop/Views/SettingsPages/UpdateSettingsPage.axaml.cs` | 代码隐藏 |
+| `LanMountainDesktop/ViewModels/UpdateSettingsViewModel.cs` | 视图模型 |
+| `LanMountainDesktop/Styles/SettingsCardStyles.axaml` | 通用设置样式 |
+| `LanMountainDesktop/Controls/IconText.axaml(.cs)` | 分节标题控件 |
+| `LanMountainDesktop.Shared.Contracts/Update/UpdateState.cs` | UpdatePhase 枚举和扩展方法 |
+
+### 核心问题
+
+1. **4 个 `Border.settings-section-card` 卡片**：状态卡、版本信息卡、进度卡、操作卡，每个都带边框+阴影+圆角，视觉零碎
+2. **FAInfoBar 嵌套在卡片内**：冗余的容器层级
+3. **7 个按钮 3×3 网格**：大量按钮在当前阶段不可用但仍然占据空间
+4. **与其他设置页面风格不一致**：GeneralSettingsPage、AppearanceSettingsPage 等全部使用 `FASettingsExpander` 列表
+
+### 参考基准
+
+- [GeneralSettingsPage.axaml](file:///d:/github/LanMountainDesktop/LanMountainDesktop/Views/SettingsPages/GeneralSettingsPage.axaml)：`IconText` 分节标题 → `FASettingsExpander` 列表 → `Separator` 分隔
+- [AppearanceSettingsPage.axaml](file:///d:/github/LanMountainDesktop/LanMountainDesktop/Views/SettingsPages/AppearanceSettingsPage.axaml)：同上模式
+- [AboutSettingsPage.axaml](file:///d:/github/LanMountainDesktop/LanMountainDesktop/Views/SettingsPages/AboutSettingsPage.axaml)：`FAInfoBar` 用于静态信息展示
+- Windows 11 设置 > Windows Update：顶部状态区 + 进度条 + 操作按钮，下方展开区展示详情
+
+---
+
+## 设计决策
+
+| 决策项 | 选择 | 理由 |
+|--------|------|------|
+| 布局模式 | FASettingsExpander 列表 | 与其他设置页面统一，Fluent Design 原生控件 |
+| 按钮策略 | 仅显示可用操作 | 简洁、不混乱，Windows 11 更新页面也是此模式 |
+| 版本信息 | FASettingsExpanderItem 行项目 | 每行一个信息，干净可扫描 |
+| 进度展示 | 内嵌在状态 Expander 内 | 进度是状态的一部分，不应独立成卡 |
+| 偏好设置 | 保留 FASettingsExpander | 已经是正确模式，微调即可 |
+
+---
+
+## 新布局结构
+
+```
+ScrollViewer
+└── StackPanel (settings-page-container settings-page-animated)
+    ├── TextBlock (settings-section-title: "更新")
+    ├── TextBlock (settings-section-description: 描述文字)
+    │
+    ├── IconText (Icon="ArrowSync", Text="更新状态")
+    │
+    ├── FASettingsExpander "检查更新" (IsClickEnabled=True, Command=CheckCommand)
+    │   ├── IconSource: ArrowSync 图标
+    │   └── Footer: Button "检查更新" (仅 CanCheck 时可见)
+    │
+    ├── FASettingsExpander "更新进度" (IsVisible=IsBusy||IsProgressVisible||IsPaused)
+    │   ├── IconSource: FAProgressRing / 对应阶段图标
+    │   ├── Footer: PhaseText + ProgressFraction
+    │   └── FASettingsExpanderItem
+    │       ├── ProgressBar (ProgressFraction)
+    │       ├── ProgressDetail 文字
+    │       └── 操作按钮行 (仅可用操作)
+    │           ├── Button "下载" (CanDownload)
+    │           ├── Button "安装" (CanInstall)
+    │           ├── Button "暂停" (CanPause)
+    │           ├── Button "继续" (CanResume)
+    │           ├── Button "回滚" (CanRollback)
+    │           └── Button "取消" (CanCancel)
+    │
+    ├── FASettingsExpander "暂停" (IsVisible=IsPaused)
+    │   └── FAInfoBar (PausedBadgeText + PausedHintText)
+    │
+    ├── Separator (settings-separator)
+    │
+    ├── IconText (Icon="Info", Text="版本信息")
+    │
+    ├── FASettingsExpander "当前版本" (IsClickEnabled=False)
+    │   ├── IconSource: 版本图标
+    │   └── Footer: CurrentVersionText
+    │
+    ├── FASettingsExpander "最新版本" (IsClickEnabled=False)
+    │   ├── IconSource: 下载图标
+    │   └── Footer: LatestVersionText (或 "已是最新")
+    │
+    ├── FASettingsExpander "发布时间" (IsClickEnabled=False)
+    │   ├── IconSource: 日历图标
+    │   └── Footer: PublishedAtText
+    │
+    ├── FASettingsExpander "上次检查" (IsClickEnabled=False)
+    │   ├── IconSource: 时钟图标
+    │   └── Footer: LastCheckedText
+    │
+    ├── FASettingsExpander "更新类型" (IsClickEnabled=False)
+    │   ├── IconSource: 标签图标
+    │   └── Footer: UpdateTypeText
+    │
+    ├── Separator (settings-separator)
+    │
+    ├── IconText (Icon="Settings", Text="更新偏好")
+    │
+    └── FASettingsExpander "更新偏好" (IsExpanded=True)
+        ├── IconSource: 设置齿轮图标
+        ├── FASettingsExpanderItem "更新频道"
+        │   └── Footer: ComboBox (stable/preview)
+        ├── FASettingsExpanderItem "下载源"
+        │   └── Footer: ComboBox (plonds/github/proxy)
+        ├── FASettingsExpanderItem "更新模式"
+        │   └── Footer: ComboBox (manual/confirm/silent)
+        └── FASettingsExpanderItem "下载线程数"
+            └── Footer: Slider + TextBlock
+```
+
+---
+
+## Proposed Changes
+
+### Task 1: 重写 UpdateSettingsPage.axaml 布局
+
+**Files:**
+- Modify: `LanMountainDesktop/Views/SettingsPages/UpdateSettingsPage.axaml`
+
+**What:** 完全重写 AXAML，将 4 个 `Border.settings-section-card` 替换为 `FASettingsExpander` 列表布局。
+
+**Key changes:**
+1. 移除所有 `Border.settings-section-card` 包裹
+2. 使用 `controls:IconText` 做分节标题（与 GeneralSettingsPage 一致）
+3. 状态区域：`FASettingsExpander` + `IsClickEnabled=True` + `Command=CheckCommand`，Footer 放检查按钮
+4. 进度区域：`FASettingsExpander` 内嵌 ProgressBar + 操作按钮，仅 `IsBusy||IsProgressVisible||IsPaused` 时可见
+5. 版本信息：每个字段一个 `FASettingsExpander`，Footer 直接显示值（参考 Windows 11 更新页面的行项目模式）
+6. 偏好设置：保留 `FASettingsExpander` + `FASettingsExpanderItem` 模式，但将 TextBox 改为 ComboBox（更符合 Fluent 规范）
+7. 使用 `Separator classes="settings-separator"` 分隔三大区域
+
+**Why:** 与项目其他设置页面统一风格，遵循 Fluent Design，消除卡片堆叠的视觉噪音。
+
+**How:**
+- 参照 GeneralSettingsPage.axaml 的布局模式
+- 参照 AppearanceSettingsPage.axaml 的 FASettingsExpander 使用方式
+- 参照 AboutSettingsPage.axaml 的 FAInfoBar 使用方式
+
+### Task 2: 更新 ViewModel — 添加 ComboBox 数据源和按钮可见性属性
+
+**Files:**
+- Modify: `LanMountainDesktop/ViewModels/UpdateSettingsViewModel.cs`
+
+**What:**
+1. 将更新频道、下载源、更新模式从 `TextBox` 绑定改为 `ComboBox` 绑定，添加 `ObservableCollection<SelectionOption>` 类型的数据源属性
+2. 添加 `IsProgressSectionVisible` 计算属性（`IsBusy || IsProgressVisible || IsPaused`）
+3. 添加 `IsUpdateAvailableSectionVisible` 计算属性（`IsUpdateAvailable`）
+4. 添加 `IsStatusInfoVisible` 计算属性（有 StatusMessage 且非空闲时）
+5. 移除不再需要的独立按钮文本属性（CheckButtonText 保留，其他按钮文本属性保留但仅在可见时使用）
+
+**Why:** ComboBox 比 TextBox 更适合有限选项的输入，且与 GeneralSettingsPage 的模式一致。按钮可见性属性让 AXAML 可以用 `IsVisible` 绑定控制按钮显示。
+
+**How:**
+- 参考 GeneralSettingsPageViewModel 中 SelectionOption 的使用方式
+- 在 `OnCurrentPhaseChanged` 中触发新属性的 OnPropertyChanged
+
+### Task 3: 将偏好设置 TextBox 替换为 ComboBox
+
+**Files:**
+- Modify: `LanMountainDesktop/Views/SettingsPages/UpdateSettingsPage.axaml` (在 Task 1 中一并完成)
+- Modify: `LanMountainDesktop/ViewModels/UpdateSettingsViewModel.cs` (在 Task 2 中一并完成)
+
+**What:** 将更新频道、下载源、更新模式三个 `TextBox` 替换为 `ComboBox`，使用 `SelectionOption` 数据模板。
+
+**Why:** 有限选项应使用 ComboBox 而非自由文本输入，这是 Fluent Design 的基本规范，也与 GeneralSettingsPage 中的语言/时区选择一致。
+
+### Task 4: 构建验证
+
+**Files:**
+- 无新文件
+
+**What:** 运行 `dotnet build` 确保编译通过，检查 AXAML 绑定是否正确。
+
+---
+
+## Assumptions & Decisions
+
+1. **不修改 UpdateOrchestrator 和 UpdateState** — 只改 UI 层和 ViewModel 的展示逻辑，不改底层更新引擎
+2. **不修改 SettingsCardStyles.axaml** — 通用样式保持不变，移除的是 UpdateSettingsPage 对它的使用
+3. **保留所有 ViewModel 属性** — 即使某些属性在新布局中不再直接使用（如独立的 ActionsTitle），也保留以避免破坏本地化系统
+4. **ComboBox 选项硬编码在 ViewModel** — 参考 GeneralSettingsPageViewModel 的 SelectionOption 模式
+5. **进度区域在空闲时隐藏** — 不显示空的进度条，只在有活动时展示
+6. **FAInfoBar 仅用于暂停/错误提示** — 不再嵌套在卡片内，直接放在 FASettingsExpanderItem 内
+
+---
+
+## Verification Steps
+
+1. `dotnet build LanMountainDesktop.slnx -c Debug` 编译通过
+2. 运行应用，导航到设置 > 更新页面，验证：
+   - 页面布局与 GeneralSettingsPage 风格一致
+   - 无圆角矩形卡片包裹
+   - 检查更新按钮可用
+   - 进度区域在空闲时隐藏
+   - 版本信息以行项目形式展示
+   - 偏好设置使用 ComboBox
+   - 操作按钮仅显示当前可用的
+3. 点击「检查更新」，验证状态变化和进度展示
+4. 验证偏好设置的 ComboBox 选择能正确保存和加载
diff --git a/.trae/specs/launcher-shell-hardening/spec.md b/.trae/specs/launcher-shell-hardening/spec.md
index 2e724e6..d73c365 100644
--- a/.trae/specs/launcher-shell-hardening/spec.md
+++ b/.trae/specs/launcher-shell-hardening/spec.md
@@ -65,3 +65,19 @@
 - 托盘失败时应用仍保持可恢复。
 - Launcher 与应用设置页显示相同版本。
 - 100% / 150% / 200% / 250% 缩放下，Launcher OOBE、主窗口入场、通知位置与动画正常。
+
+### 5. Launcher IPC and error surface follow-up
+
+- The legacy `LanMountainDesktop_Launcher` named-pipe startup progress channel is retired. Public IPC notifications and host exit codes are the only startup state sources.
+- Normal Launcher launches must probe public IPC for an existing Host before starting a new Host process. Host no longer owns multi-instance policy, activation prompts, or the old single-instance pipe.
+- `SecondaryActivationSucceeded` is a success terminal state. `SecondaryActivationFailed` and `RestartLockNotAcquired` may surface as failures only after public IPC recovery has failed.
+- Launcher startup errors must use FluentAvalonia resources, Fluent icons, an InfoBar recovery hint, and copyable diagnostics instead of the old hard-coded dark panel.
+
+### 6. Multi-instance behavior setting
+
+- App settings include `MultiInstanceLaunchBehavior` with default `NotifyAndOpenDesktop`.
+- General settings exposes the behavior under Basic Settings with four choices: restart app, open desktop silently, prompt only, and notify plus open desktop.
+- Launcher reads the Host `settings.json` before a normal launch and applies the selected behavior when public IPC reports an existing Host.
+- `PromptOnly` shows a Fluent Launcher prompt and does not open the desktop automatically.
+- `NotifyAndOpenDesktop` activates the existing Host and shows the already-running notice from Launcher.
+- `RestartApp` requests restart through public IPC and must not create a second Host if the restart request fails.
diff --git a/.trae/specs/launcher-shell-hardening/tasks.md b/.trae/specs/launcher-shell-hardening/tasks.md
index 9644627..b139320 100644
--- a/.trae/specs/launcher-shell-hardening/tasks.md
+++ b/.trae/specs/launcher-shell-hardening/tasks.md
@@ -12,3 +12,10 @@
 - [x] 修复主窗口入场、通知定位和 Launcher OOBE 的高分屏动画/定位问题。
 - [x] 补充规格与版本同步说明文档。
 - [ ] 追加针对托盘恢复和启动判定的自动化回归测试。
+
+- [x] Remove the legacy `LanMountainDesktop_Launcher` startup progress pipe; launcher progress now uses public IPC plus host exit-code classification only.
+- [x] Move normal multi-open probing into Launcher before host launch and remove Host-side single-instance prompt/listener code.
+- [x] Refresh the Launcher error window with Fluent resources, InfoBar, Fluent icons, command bar actions, and copyable diagnostic details.
+- [x] Add app-level `MultiInstanceLaunchBehavior` setting and expose it in General > Basic Settings.
+- [x] Make Launcher apply restart/open silently/prompt only/notify and open behavior before starting a new Host.
+- [x] Add a Fluent Launcher multi-instance prompt; Host public IPC stays limited to activation/status/restart/exit actions.
diff --git a/.trae/specs/launcher-shell-hardening/tray-menu-shutdown-addendum.md b/.trae/specs/launcher-shell-hardening/tray-menu-shutdown-addendum.md
index 3067a0f..eb31ed1 100644
--- a/.trae/specs/launcher-shell-hardening/tray-menu-shutdown-addendum.md
+++ b/.trae/specs/launcher-shell-hardening/tray-menu-shutdown-addendum.md
@@ -4,14 +4,14 @@
 
 - Tray menu `Exit App` must commit an irreversible host shutdown request.
 - Once shutdown is committed, tray menu actions must not reopen the desktop, settings window, or component library.
-- Shutdown cleanup must release Public IPC, plugin runtime, tray icon, fused desktop edit UI, telemetry resources, and the single-instance lock before the forced-exit deadline.
+- Shutdown cleanup must release Public IPC, plugin runtime, tray icon, fused desktop edit UI, and telemetry resources before the forced-exit deadline.
 - Forced process termination must be scheduled when the shutdown request is accepted, not only after Avalonia lifetime exit.
 - Restart must preserve `RestartRequested` intent and must not route through an exit path that overwrites it.
 - Fused desktop component library menu activation must reuse the existing library window and must exit edit mode if opening fails.
 
 ## Acceptance
 
-- Selecting `Exit App` from the tray leaves no background host process and allows a later Launcher start to acquire the single-instance lock.
+- Selecting `Exit App` from the tray leaves no background host process and allows a later Launcher start to perform multi-instance detection through public IPC.
 - Selecting `Restart App` starts the Launcher or upgrade helper once, then shuts down the old host as a restart.
 - Repeated tray clicks during shutdown are ignored and logged.
 - Repeated component-library clicks focus the existing window instead of opening duplicates.
diff --git a/LanMountainDesktop.Launcher/App.axaml b/LanMountainDesktop.Launcher/App.axaml
index 3fc30e9..7b0db10 100644
--- a/LanMountainDesktop.Launcher/App.axaml
+++ b/LanMountainDesktop.Launcher/App.axaml
@@ -5,5 +5,8 @@
              RequestedThemeVariant="Default">
   <Application.Styles>
     <sty:FluentAvaloniaTheme />
+    <Style Selector="Window">
+      <Setter Property="Topmost" Value="True" />
+    </Style>
   </Application.Styles>
 </Application>
diff --git a/LanMountainDesktop.Launcher/App.axaml.cs b/LanMountainDesktop.Launcher/App.axaml.cs
index 8405ee3..306c087 100644
--- a/LanMountainDesktop.Launcher/App.axaml.cs
+++ b/LanMountainDesktop.Launcher/App.axaml.cs
@@ -112,6 +112,15 @@ public partial class App : Application
                 _ = WaitForWindowCloseAsync(desktop, errorWindow);
                 return true;
             }
+            case "preview-multi-instance":
+            {
+                Logger.Info("Preview command: multi-instance prompt.");
+                var promptWindow = new MultiInstancePromptWindow();
+                promptWindow.SetDetails(Environment.ProcessId, "ForegroundDesktop");
+                promptWindow.Show();
+                _ = WaitForWindowCloseAsync(desktop, promptWindow);
+                return true;
+            }
             case "preview-update":
             {
                 Logger.Info("Preview command: update.");
diff --git a/LanMountainDesktop.Launcher/Services/HostAppSettingsOobeMerger.cs b/LanMountainDesktop.Launcher/Services/HostAppSettingsOobeMerger.cs
index 04a4b9b..8c69ba5 100644
--- a/LanMountainDesktop.Launcher/Services/HostAppSettingsOobeMerger.cs
+++ b/LanMountainDesktop.Launcher/Services/HostAppSettingsOobeMerger.cs
@@ -16,6 +16,7 @@ public static class HostAppSettingsOobeMerger
     public const string EnableFusedDesktopKey = "EnableFusedDesktop";
     public const string EnableThreeFingerSwipeKey = "EnableThreeFingerSwipe";
     public const string AutoStartWithWindowsKey = "AutoStartWithWindows";
+    public const string MultiInstanceLaunchBehaviorKey = "MultiInstanceLaunchBehavior";
 
     public static string GetSettingsFilePath(string dataRoot) =>
         Path.Combine(Path.GetFullPath(dataRoot.TrimEnd(Path.DirectorySeparatorChar, Path.AltDirectorySeparatorChar)), "settings.json");
@@ -54,6 +55,30 @@ public static class HostAppSettingsOobeMerger
         }
     }
 
+    public static MultiInstanceLaunchBehavior LoadMultiInstanceLaunchBehavior(string settingsPath)
+    {
+        if (!File.Exists(settingsPath))
+        {
+            return MultiInstanceLaunchBehavior.NotifyAndOpenDesktop;
+        }
+
+        try
+        {
+            var root = JsonNode.Parse(File.ReadAllText(settingsPath))?.AsObject();
+            if (root is null)
+            {
+                return MultiInstanceLaunchBehavior.NotifyAndOpenDesktop;
+            }
+
+            return ReadMultiInstanceLaunchBehavior(root);
+        }
+        catch (Exception ex)
+        {
+            Logger.Warn($"HostAppSettingsOobeMerger: failed to read multi-instance behavior from '{settingsPath}'. {ex.Message}");
+            return MultiInstanceLaunchBehavior.NotifyAndOpenDesktop;
+        }
+    }
+
     public static void MergeStartupPresentation(string settingsPath, HostAppSettingsStartupChoices choices)
     {
         var directory = Path.GetDirectoryName(settingsPath);
@@ -109,6 +134,31 @@ public static class HostAppSettingsOobeMerger
             _ => defaultValue
         };
     }
+
+    private static MultiInstanceLaunchBehavior ReadMultiInstanceLaunchBehavior(JsonObject root)
+    {
+        if (!root.TryGetPropertyValue(MultiInstanceLaunchBehaviorKey, out var node) || node is null)
+        {
+            return MultiInstanceLaunchBehavior.NotifyAndOpenDesktop;
+        }
+
+        if (node is JsonValue value)
+        {
+            if (value.TryGetValue<string>(out var text) &&
+                Enum.TryParse<MultiInstanceLaunchBehavior>(text, ignoreCase: true, out var parsed))
+            {
+                return parsed;
+            }
+
+            if (value.TryGetValue<int>(out var numeric) &&
+                Enum.IsDefined(typeof(MultiInstanceLaunchBehavior), numeric))
+            {
+                return (MultiInstanceLaunchBehavior)numeric;
+            }
+        }
+
+        return MultiInstanceLaunchBehavior.NotifyAndOpenDesktop;
+    }
 }
 
 public readonly record struct HostAppSettingsStartupDefaults(
diff --git a/LanMountainDesktop.Launcher/Services/Ipc/LauncherIpcServer.cs b/LanMountainDesktop.Launcher/Services/Ipc/LauncherIpcServer.cs
deleted file mode 100644
index 2d4e447..0000000
--- a/LanMountainDesktop.Launcher/Services/Ipc/LauncherIpcServer.cs
+++ /dev/null
@@ -1,210 +0,0 @@
-using System.Buffers;
-using System.IO.Pipes;
-using System.Text.Json;
-using LanMountainDesktop.Shared.Contracts.Launcher;
-
-namespace LanMountainDesktop.Launcher.Services.Ipc;
-
-/// <summary>
-/// Launcher IPC 服务端 - 接收主程序的启动进度报告
-/// 采用持久连接 + 长度前缀协议，支持客户端在同一连接上多次发送消息。
-/// 跨平台实现：Windows 使用命名管道，Linux/macOS 使用 Unix 域套接字
-/// </summary>
-public class LauncherIpcServer : IDisposable
-{
-    private readonly CancellationTokenSource _cts = new();
-    private readonly Action<StartupProgressMessage> _onProgress;
-    private Task? _listenTask;
-    private NamedPipeServerStream? _currentPipe;
-
-    /// <summary>
-    /// 协议：每条消息以 4 字节小端 int32 长度前缀开头，后跟 UTF-8 JSON 正文。
-    /// 这在 Windows Message 模式和 unix Byte 模式下均能可靠工作。
-    /// </summary>
-    private const int LengthPrefixSize = 4;
-
-    private const int BackoffBaseMs = 200;
-    private const int BackoffMaxMs = 5000;
-    private const int BackoffJitterMs = 100;
-
-    public LauncherIpcServer(Action<StartupProgressMessage> onProgress)
-    {
-        _onProgress = onProgress;
-    }
-
-    /// <summary>
-    /// 启动 IPC 服务端监听
-    /// </summary>
-    public void Start()
-    {
-        _listenTask = Task.Run(ListenLoopAsync, _cts.Token);
-    }
-
-    private async Task ListenLoopAsync()
-    {
-        var consecutiveErrors = 0;
-
-        while (!_cts.Token.IsCancellationRequested)
-        {
-            NamedPipeServerStream? pipe = null;
-            try
-            {
-                pipe = new NamedPipeServerStream(
-                    LauncherIpcConstants.PipeName,
-                    PipeDirection.In,
-                    1,
-                    PipeTransmissionMode.Byte,
-                    PipeOptions.Asynchronous);
-
-                _currentPipe = pipe;
-                await pipe.WaitForConnectionAsync(_cts.Token);
-
-                consecutiveErrors = 0;
-
-                await ReadMessagesFromConnectionAsync(pipe, _cts.Token);
-            }
-            catch (OperationCanceledException)
-            {
-                break;
-            }
-            catch (IOException)
-            {
-                consecutiveErrors = 0;
-                continue;
-            }
-            catch (ObjectDisposedException)
-            {
-                break;
-            }
-            catch (Exception ex)
-            {
-                consecutiveErrors++;
-                var delay = ComputeBackoff(consecutiveErrors);
-                Console.Error.WriteLine($"IPC listen error (attempt {consecutiveErrors}), retrying in {delay}ms: {ex.Message}");
-                try
-                {
-                    await Task.Delay(delay, _cts.Token);
-                }
-                catch (OperationCanceledException)
-                {
-                    break;
-                }
-            }
-            finally
-            {
-                try
-                {
-                    pipe?.Dispose();
-                }
-                catch { }
-
-                if (ReferenceEquals(_currentPipe, pipe))
-                {
-                    _currentPipe = null;
-                }
-            }
-        }
-    }
-
-    private int ComputeBackoff(int attempt)
-    {
-        var exponential = BackoffBaseMs * (1 << Math.Min(attempt - 1, 5));
-        var capped = Math.Min(exponential, BackoffMaxMs);
-        var jitter = Random.Shared.Next(0, BackoffJitterMs);
-        return capped + jitter;
-    }
-
-    /// <summary>
-    /// 从已连接的管道中持续读取消息，直到连接断开或取消
-    /// </summary>
-    private async Task ReadMessagesFromConnectionAsync(NamedPipeServerStream pipe, CancellationToken cancellationToken)
-    {
-        var lengthBuffer = ArrayPool<byte>.Shared.Rent(LengthPrefixSize);
-        try
-        {
-            while (pipe.IsConnected && !cancellationToken.IsCancellationRequested)
-            {
-                // 1. 读取 4 字节长度前缀
-                var totalRead = 0;
-                while (totalRead < LengthPrefixSize)
-                {
-                    var read = await pipe.ReadAsync(lengthBuffer.AsMemory(totalRead, LengthPrefixSize - totalRead), cancellationToken);
-                    if (read == 0)
-                    {
-                        // 连接已关闭
-                        return;
-                    }
-                    totalRead += read;
-                }
-
-                var payloadLength = BitConverter.ToInt32(lengthBuffer, 0);
-                if (payloadLength <= 0 || payloadLength > 1024 * 1024) // 最大 1MB 单条消息
-                {
-                    // 无效长度，跳过此连接
-                    return;
-                }
-
-                // 2. 读取消息正文
-                var payloadBuffer = ArrayPool<byte>.Shared.Rent(payloadLength);
-                try
-                {
-                    totalRead = 0;
-                    while (totalRead < payloadLength)
-                    {
-                        var read = await pipe.ReadAsync(payloadBuffer.AsMemory(totalRead, payloadLength - totalRead), cancellationToken);
-                        if (read == 0)
-                        {
-                            return;
-                        }
-                        totalRead += read;
-                    }
-
-                    // 3. 反序列化并回调
-                    var json = System.Text.Encoding.UTF8.GetString(payloadBuffer, 0, payloadLength);
-                    var message = JsonSerializer.Deserialize(json, AppJsonContext.Default.StartupProgressMessage);
-                    if (message is not null)
-                    {
-                        _onProgress(message);
-                    }
-                }
-                catch (JsonException)
-                {
-                    // 忽略解析错误，继续读取下一条消息
-                }
-                finally
-                {
-                    ArrayPool<byte>.Shared.Return(payloadBuffer);
-                }
-            }
-        }
-        finally
-        {
-            ArrayPool<byte>.Shared.Return(lengthBuffer);
-        }
-    }
-
-    /// <summary>
-    /// 停止 IPC 服务端
-    /// </summary>
-    public void Stop()
-    {
-        _cts.Cancel();
-        try
-        {
-            _currentPipe?.Dispose();
-        }
-        catch { }
-    }
-
-    public void Dispose()
-    {
-        Stop();
-        _cts.Dispose();
-
-        try
-        {
-            _listenTask?.Wait(TimeSpan.FromSeconds(2));
-        }
-        catch { }
-    }
-}
diff --git a/LanMountainDesktop.Launcher/Services/LauncherFlowCoordinator.cs b/LanMountainDesktop.Launcher/Services/LauncherFlowCoordinator.cs
index c598042..0b93f89 100644
--- a/LanMountainDesktop.Launcher/Services/LauncherFlowCoordinator.cs
+++ b/LanMountainDesktop.Launcher/Services/LauncherFlowCoordinator.cs
@@ -218,56 +218,53 @@ internal sealed class LauncherFlowCoordinator
             {
                 if (ShouldProbeExistingHostBeforeLaunch(_context))
                 {
-                    var existingActivation = await TryActivateExistingHostWithStatusAsync(ipcClient, TimeSpan.FromMilliseconds(900))
+                    var multiInstanceBehavior = LoadMultiInstanceLaunchBehavior();
+                    var existingShellStatus = await TryGetExistingHostStatusAsync(ipcClient, TimeSpan.FromMilliseconds(900))
                         .ConfigureAwait(false);
-                    if (existingActivation is not null)
+                    if (IsExistingHostReadyForLauncherDecision(existingShellStatus))
                     {
                         ipcConnected = true;
-                        shellStatus = existingActivation.Status;
-                        var recoverableActivationFailure = IsRecoverableActivationFailure(existingActivation);
-                        lastStage = existingActivation.Accepted
+                        shellStatus = existingShellStatus;
+                        var decisionResult = await ApplyExistingHostBehaviorAsync(
+                                ipcClient,
+                                multiInstanceBehavior,
+                                existingShellStatus!)
+                            .ConfigureAwait(false);
+                        shellStatus = decisionResult.ActivationResult?.Status ?? existingShellStatus;
+                        var recoverableActivationFailure = decisionResult.ActivationResult is not null &&
+                                                           IsRecoverableActivationFailure(decisionResult.ActivationResult);
+                        lastStage = decisionResult.Success || recoverableActivationFailure
                             ? StartupStage.ActivationRedirected
                             : StartupStage.ActivationFailed;
-                        lastStageMessage = existingActivation.Message;
-                        if (existingActivation.Accepted)
+                        lastStageMessage = decisionResult.Message;
+                        if (decisionResult.Success || recoverableActivationFailure)
                         {
                             _startupAttemptRegistry.MarkOwnedSucceeded(lastStage, lastStageMessage);
                         }
-                        else if (recoverableActivationFailure)
-                        {
-                            _startupAttemptRegistry.MarkOwnedWaitingForShell(lastStageMessage);
-                        }
                         else
                         {
                             _startupAttemptRegistry.MarkOwnedFailed(lastStage, lastStageMessage);
                         }
 
-                        PublishCoordinatorStatus(
-                            hostProcessAliveOverride: true,
-                            completed: true,
-                            succeeded: existingActivation.Accepted || recoverableActivationFailure);
+                        PublishCoordinatorStatus(hostProcessAliveOverride: true, completed: true, succeeded: decisionResult.Success);
                         windowsClosingByCoordinator = true;
                         await CloseWindowsAsync(splashWindow, loadingDetailsWindow).ConfigureAwait(false);
                         return BuildResult(
-                            success: existingActivation.Accepted || recoverableActivationFailure,
+                            success: decisionResult.Success,
                             stage: "launch",
-                            code: existingActivation.Accepted
-                                ? "existing_host_activated"
-                                : recoverableActivationFailure
-                                    ? "existing_host_startup_pending"
-                                    : "existing_host_activation_failed",
-                            message: recoverableActivationFailure
-                                ? "Existing desktop process is still starting; Launcher will not start another process."
-                                : existingActivation.Message,
+                            code: decisionResult.Code,
+                            message: decisionResult.Message,
                             details: MergeDetails(
                                 launcherContextDetails,
                                 new Dictionary<string, string>(StringComparer.OrdinalIgnoreCase)
                                 {
                                     ["publicIpcConnected"] = "true",
-                                    ["existingHostPid"] = existingActivation.Status.ProcessId.ToString(),
-                                    ["existingShellState"] = existingActivation.Status.ShellState,
-                                    ["existingTrayState"] = existingActivation.Status.Tray.State,
-                                    ["existingTaskbarUsable"] = existingActivation.Status.Taskbar.IsUsable.ToString()
+                                    ["multiInstanceBehavior"] = multiInstanceBehavior.ToString(),
+                                    ["existingHostPid"] = shellStatus?.ProcessId.ToString() ?? string.Empty,
+                                    ["existingShellState"] = shellStatus?.ShellState ?? string.Empty,
+                                    ["existingTrayState"] = shellStatus?.Tray.State ?? string.Empty,
+                                    ["existingTaskbarUsable"] = shellStatus?.Taskbar.IsUsable.ToString() ?? string.Empty,
+                                    ["activationAccepted"] = decisionResult.ActivationResult?.Accepted.ToString() ?? string.Empty
                                 }));
                     }
                 }
@@ -492,7 +489,7 @@ internal sealed class LauncherFlowCoordinator
                 var connected = await TryConnectToPublicIpcAsync(ipcClient, TimeSpan.FromMilliseconds(1200)).ConfigureAwait(false);
                 if (!connected)
                 {
-                    Logger.Warn("Timed out waiting for host public IPC. Launcher will continue without live startup notifications.");
+                    Logger.Info("Host public IPC is not ready yet. Launcher will keep monitoring the host process and retry.");
                 }
                 else
                 {
@@ -557,30 +554,7 @@ internal sealed class LauncherFlowCoordinator
                                     recoveryActivationAttempted: true));
                         }
 
-                        var retryOutcome = await RetryActivationAfterEarlyFailureAsync().ConfigureAwait(false);
-                        if (retryOutcome is not null)
-                        {
-                            windowsClosingByCoordinator = true;
-                            if (retryOutcome.Success)
-                            {
-                                _startupAttemptRegistry.MarkOwnedSucceeded(lastStage, retryOutcome.Message);
-                                PublishCoordinatorStatus(
-                                    hostProcessAliveOverride: !launchOutcome.Process.HasExited,
-                                    completed: true,
-                                    succeeded: true);
-                            }
-                            else
-                            {
-                                _startupAttemptRegistry.MarkOwnedFailed(lastStage, activationFailureReason);
-                                PublishCoordinatorStatus(
-                                    hostProcessAliveOverride: !launchOutcome.Process.HasExited,
-                                    completed: true,
-                                    succeeded: false);
-                            }
-
-                            await CloseWindowsAsync(splashWindow, loadingDetailsWindow).ConfigureAwait(false);
-                            return WithAdditionalDetails(retryOutcome, ComposeLaunchDetails(!launchOutcome.Process.HasExited, recoveryActivationAttempted: true));
-                        }
+                        Logger.Info("Activation failure did not recover through public IPC yet. Launcher will keep monitoring the current host attempt.");
                     }
 
                     if (processExitTask.IsCompleted)
@@ -589,7 +563,7 @@ internal sealed class LauncherFlowCoordinator
                         Logger.Warn($"Host exited before startup success criteria were met. ExitCode={exitCode}.");
 
                         windowsClosingByCoordinator = true;
-                        if (exitCode == HostExitCodes.SecondaryActivationSucceeded)
+                        if (IsSuccessfulActivationExitCode(exitCode))
                         {
                             _startupAttemptRegistry.MarkOwnedSucceeded(StartupStage.ActivationRedirected, "Host redirected activation to the existing desktop instance.");
                             PublishCoordinatorStatus(hostProcessAliveOverride: false, completed: true, succeeded: true);
@@ -608,7 +582,7 @@ internal sealed class LauncherFlowCoordinator
                         }
 
                         if (!activationRetryAttempted &&
-                            exitCode is HostExitCodes.SecondaryActivationFailed or HostExitCodes.RestartLockNotAcquired)
+                            IsFailedActivationExitCode(exitCode))
                         {
                             activationRetryAttempted = true;
                             var activationRecovery = await TryRecoverActivationThroughExistingHostAsync(
@@ -633,30 +607,7 @@ internal sealed class LauncherFlowCoordinator
                                         }));
                             }
 
-                            var retryOutcome = await RetryActivationAfterEarlyFailureAsync().ConfigureAwait(false);
-                            if (retryOutcome is not null)
-                            {
-                                if (retryOutcome.Success)
-                                {
-                                    _startupAttemptRegistry.MarkOwnedSucceeded(lastStage, retryOutcome.Message);
-                                    PublishCoordinatorStatus(hostProcessAliveOverride: false, completed: true, succeeded: true);
-                                }
-                                else
-                                {
-                                    _startupAttemptRegistry.MarkOwnedFailed(lastStage, activationFailureReason);
-                                    PublishCoordinatorStatus(hostProcessAliveOverride: false, completed: true, succeeded: false);
-                                }
-
-                                await CloseWindowsAsync(splashWindow, loadingDetailsWindow).ConfigureAwait(false);
-                                return WithAdditionalDetails(
-                                    retryOutcome,
-                                    MergeDetails(
-                                        ComposeLaunchDetails(hostProcessAlive: false, recoveryActivationAttempted: true),
-                                        new Dictionary<string, string>(StringComparer.OrdinalIgnoreCase)
-                                        {
-                                            ["exitCode"] = exitCode.ToString()
-                                        }));
-                            }
+                            Logger.Info("Activation exit code did not recover through public IPC. Launcher will report the activation failure without launching another host.");
                         }
 
                         _startupAttemptRegistry.MarkOwnedFailed(lastStage, activationFailureReason);
@@ -665,10 +616,10 @@ internal sealed class LauncherFlowCoordinator
                         return BuildResult(
                             success: false,
                             stage: "launch",
-                            code: exitCode is HostExitCodes.SecondaryActivationFailed or HostExitCodes.RestartLockNotAcquired
+                            code: IsFailedActivationExitCode(exitCode)
                                 ? "activation_failed"
                                 : "host_exited_early",
-                            message: exitCode is HostExitCodes.SecondaryActivationFailed or HostExitCodes.RestartLockNotAcquired
+                            message: IsFailedActivationExitCode(exitCode)
                                 ? $"Host activation handshake failed before the required startup state was reported. ExitCode={exitCode}."
                                 : $"Host exited before the required startup state was reported. ExitCode={exitCode}.",
                             details: MergeDetails(
@@ -909,54 +860,6 @@ internal sealed class LauncherFlowCoordinator
         }
     }
 
-    private async Task<LauncherResult?> RetryActivationAfterEarlyFailureAsync()
-    {
-        Logger.Warn("Attempting one explicit activation retry after host early failure.");
-        var retryOutcome = await LaunchHostWithIpcAsync(forceDirectMode: true, retryTag: "explicit-activation-retry").ConfigureAwait(false);
-        if (!retryOutcome.Result.Success)
-        {
-            return retryOutcome.Result;
-        }
-
-        if (retryOutcome.ImmediateResult is not null)
-        {
-            return retryOutcome.ImmediateResult;
-        }
-
-        if (retryOutcome.Process is not null)
-        {
-            var retryExitTask = retryOutcome.Process.WaitForExitAsync();
-            var completed = await Task.WhenAny(retryExitTask, Task.Delay(TimeSpan.FromSeconds(15))).ConfigureAwait(false);
-
-            if (completed != retryExitTask)
-            {
-                return BuildResult(
-                    success: true,
-                    stage: "launch",
-                    code: "activation_retry_started",
-                    message: "Activation retry started the host successfully.",
-                    details: retryOutcome.Details);
-            }
-
-            if (retryOutcome.Process.ExitCode == HostExitCodes.SecondaryActivationSucceeded)
-            {
-                return BuildResult(
-                    success: true,
-                    stage: "launch",
-                    code: "activation_redirected",
-                    message: "Activation retry redirected to the existing desktop instance.",
-                    details: retryOutcome.Details);
-            }
-        }
-
-        return BuildResult(
-            success: false,
-            stage: "launch",
-            code: "activation_failed",
-            message: "Activation retry failed to make the desktop visible.",
-            details: retryOutcome.Details);
-    }
-
     private static async Task CloseWindowsAsync(SplashWindow splashWindow, LoadingDetailsWindow? loadingDetailsWindow)
     {
         try
@@ -1087,7 +990,7 @@ internal sealed class LauncherFlowCoordinator
             previousAttempt is null ? null : finalAttempt,
             !finalAttempt.ProcessCreated
                 ? "start"
-                : finalAttempt.ExitCode is HostExitCodes.SecondaryActivationFailed or HostExitCodes.RestartLockNotAcquired
+                : finalAttempt.ExitCode is int finalExitCode && IsFailedActivationExitCode(finalExitCode)
                     ? "activation"
                     : "early-exit");
 
@@ -1101,7 +1004,7 @@ internal sealed class LauncherFlowCoordinator
                 details));
         }
 
-        if (finalAttempt.ExitCode == HostExitCodes.SecondaryActivationSucceeded)
+        if (finalAttempt.ExitCode is not null && IsSuccessfulActivationExitCode(finalAttempt.ExitCode.Value))
         {
             return HostLaunchOutcome.FromImmediateResult(BuildResult(
                 true,
@@ -1111,7 +1014,7 @@ internal sealed class LauncherFlowCoordinator
                 details));
         }
 
-        if (finalAttempt.ExitCode is HostExitCodes.SecondaryActivationFailed or HostExitCodes.RestartLockNotAcquired)
+        if (finalAttempt.ExitCode is not null && IsFailedActivationExitCode(finalAttempt.ExitCode.Value))
         {
             return HostLaunchOutcome.FromResult(BuildResult(
                 false,
@@ -1469,12 +1372,12 @@ internal sealed class LauncherFlowCoordinator
         }
         catch (Exception ex)
         {
-            Logger.Warn($"Public IPC connect failed: {ex.Message}");
+            Logger.Info($"Public IPC is not ready yet: {ex.Message}");
             return false;
         }
     }
 
-    private static bool ShouldProbeExistingHostBeforeLaunch(CommandContext context)
+    internal static bool ShouldProbeExistingHostBeforeLaunch(CommandContext context)
     {
         if (!string.Equals(context.Command, "launch", StringComparison.OrdinalIgnoreCase))
         {
@@ -1489,6 +1392,169 @@ internal sealed class LauncherFlowCoordinator
         return !string.Equals(context.LaunchSource, "restart", StringComparison.OrdinalIgnoreCase);
     }
 
+    private MultiInstanceLaunchBehavior LoadMultiInstanceLaunchBehavior()
+    {
+        try
+        {
+            var settingsPath = HostAppSettingsOobeMerger.GetSettingsFilePath(_dataLocationResolver.ResolveDataRoot());
+            return HostAppSettingsOobeMerger.LoadMultiInstanceLaunchBehavior(settingsPath);
+        }
+        catch (Exception ex)
+        {
+            Logger.Warn($"Failed to load multi-instance launch behavior. Falling back to default. {ex.Message}");
+            return MultiInstanceLaunchBehavior.NotifyAndOpenDesktop;
+        }
+    }
+
+    internal static bool IsExistingHostReadyForLauncherDecision(PublicShellStatus? status)
+    {
+        return status is { PublicIpcReady: true, ProcessId: > 0 };
+    }
+
+    private static async Task<PublicShellStatus?> TryGetExistingHostStatusAsync(
+        LanMountainDesktopIpcClient ipcClient,
+        TimeSpan timeout)
+    {
+        try
+        {
+            var connected = ipcClient.IsConnected ||
+                            await TryConnectToPublicIpcAsync(ipcClient, timeout).ConfigureAwait(false);
+            if (!connected)
+            {
+                return null;
+            }
+
+            var shellProxy = ipcClient.CreateProxy<IPublicShellControlService>();
+            return await shellProxy.GetShellStatusAsync().ConfigureAwait(false);
+        }
+        catch (Exception ex)
+        {
+            Logger.Info($"Existing host status probe did not complete: {ex.Message}");
+            return null;
+        }
+    }
+
+    private static async Task<ExistingHostBehaviorResult> ApplyExistingHostBehaviorAsync(
+        LanMountainDesktopIpcClient ipcClient,
+        MultiInstanceLaunchBehavior behavior,
+        PublicShellStatus status)
+    {
+        try
+        {
+            var shellProxy = ipcClient.CreateProxy<IPublicShellControlService>();
+            return behavior switch
+            {
+                MultiInstanceLaunchBehavior.OpenDesktopSilently => await ActivateExistingHostForBehaviorAsync(
+                    shellProxy,
+                    showLauncherNotice: false,
+                    successCode: "existing_host_activated",
+                    successMessage: "Launcher activated the existing desktop instance.",
+                    failureCode: "existing_host_activation_failed").ConfigureAwait(false),
+
+                MultiInstanceLaunchBehavior.NotifyAndOpenDesktop => await ActivateExistingHostForBehaviorAsync(
+                    shellProxy,
+                    showLauncherNotice: true,
+                    successCode: "existing_host_activated_with_notice",
+                    successMessage: "Launcher activated the existing desktop instance and showed the repeated-launch notice.",
+                    failureCode: "existing_host_activation_failed").ConfigureAwait(false),
+
+                MultiInstanceLaunchBehavior.PromptOnly => await ShowPromptOnlyExistingHostAsync(
+                    shellProxy,
+                    status).ConfigureAwait(false),
+
+                MultiInstanceLaunchBehavior.RestartApp => await RestartExistingHostAsync(shellProxy).ConfigureAwait(false),
+
+                _ => await ActivateExistingHostForBehaviorAsync(
+                    shellProxy,
+                    showLauncherNotice: true,
+                    successCode: "existing_host_activated_with_notice",
+                    successMessage: "Launcher activated the existing desktop instance and showed the repeated-launch notice.",
+                    failureCode: "existing_host_activation_failed").ConfigureAwait(false)
+            };
+        }
+        catch (Exception ex)
+        {
+            Logger.Warn($"Failed to apply multi-instance behavior '{behavior}': {ex.Message}");
+            return new ExistingHostBehaviorResult(
+                false,
+                "multi_instance_behavior_failed",
+                $"Failed to apply multi-instance behavior '{behavior}': {ex.Message}",
+                null);
+        }
+    }
+
+    private static async Task<ExistingHostBehaviorResult> ActivateExistingHostForBehaviorAsync(
+        IPublicShellControlService shellProxy,
+        bool showLauncherNotice,
+        string successCode,
+        string successMessage,
+        string failureCode)
+    {
+        var activation = await shellProxy.ActivateMainWindowWithStatusAsync().ConfigureAwait(false);
+        var success = activation.Accepted || IsRecoverableActivationFailure(activation);
+        if (showLauncherNotice && success)
+        {
+            var promptResult = await ShowMultiInstancePromptAsync(activation.Status).ConfigureAwait(false);
+            if (promptResult == MultiInstancePromptResult.OpenDesktop)
+            {
+                activation = await shellProxy.ActivateMainWindowWithStatusAsync().ConfigureAwait(false);
+            }
+        }
+
+        return new ExistingHostBehaviorResult(
+            success,
+            activation.Accepted ? successCode : success ? "existing_host_startup_pending" : failureCode,
+            activation.Accepted ? successMessage : activation.Message,
+            activation);
+    }
+
+    private static async Task<ExistingHostBehaviorResult> RestartExistingHostAsync(
+        IPublicShellControlService shellProxy)
+    {
+        var accepted = await shellProxy.RestartAsync().ConfigureAwait(false);
+        return new ExistingHostBehaviorResult(
+            accepted,
+            accepted ? "existing_host_restart_requested" : "existing_host_restart_failed",
+            accepted
+                ? "Launcher requested the existing desktop instance to restart."
+                : "Launcher could not request restart from the existing desktop instance.",
+            null);
+    }
+
+    private static async Task<ExistingHostBehaviorResult> ShowPromptOnlyExistingHostAsync(
+        IPublicShellControlService shellProxy,
+        PublicShellStatus status)
+    {
+        var promptResult = await ShowMultiInstancePromptAsync(status).ConfigureAwait(false);
+
+        if (promptResult == MultiInstancePromptResult.OpenDesktop)
+        {
+            return await ActivateExistingHostForBehaviorAsync(
+                shellProxy,
+                showLauncherNotice: false,
+                successCode: "existing_host_activated_from_prompt",
+                successMessage: "Launcher activated the existing desktop instance from the prompt.",
+                failureCode: "existing_host_activation_failed").ConfigureAwait(false);
+        }
+
+        return new ExistingHostBehaviorResult(
+            true,
+            "existing_host_prompt_only",
+            "Launcher showed the repeated-launch prompt and did not open the desktop automatically.",
+            null);
+    }
+
+    private static async Task<MultiInstancePromptResult> ShowMultiInstancePromptAsync(PublicShellStatus status)
+    {
+        return await Dispatcher.UIThread.InvokeAsync(async () =>
+        {
+            var prompt = new MultiInstancePromptWindow();
+            prompt.SetDetails(status.ProcessId, status.ShellState);
+            prompt.Show();
+            return await prompt.WaitForChoiceAsync().ConfigureAwait(true);
+        });
+    }
+
     private static async Task<PublicShellActivationResult?> TryActivateExistingHostWithStatusAsync(
         LanMountainDesktopIpcClient ipcClient,
         TimeSpan timeout)
@@ -1507,7 +1573,7 @@ internal sealed class LauncherFlowCoordinator
         }
         catch (Exception ex)
         {
-            Logger.Warn($"Existing host activation probe failed: {ex.Message}");
+            Logger.Info($"Existing host activation probe did not complete: {ex.Message}");
             return null;
         }
     }
@@ -1541,7 +1607,7 @@ internal sealed class LauncherFlowCoordinator
             : null;
     }
 
-    private static bool IsRecoverableActivationFailure(PublicShellActivationResult activation)
+    internal static bool IsRecoverableActivationFailure(PublicShellActivationResult activation)
     {
         if (activation.Accepted)
         {
@@ -1560,6 +1626,12 @@ internal sealed class LauncherFlowCoordinator
                 string.Equals(activation.Code, "startup_pending", StringComparison.OrdinalIgnoreCase));
     }
 
+    internal static bool IsSuccessfulActivationExitCode(int exitCode) =>
+        exitCode == HostExitCodes.SecondaryActivationSucceeded;
+
+    internal static bool IsFailedActivationExitCode(int exitCode) =>
+        exitCode is HostExitCodes.SecondaryActivationFailed or HostExitCodes.RestartLockNotAcquired;
+
     private static async Task<PublicShellStatus?> TryGetPublicShellStatusAsync(
         LanMountainDesktopIpcClient ipcClient)
     {
@@ -1759,6 +1831,12 @@ internal sealed class LauncherFlowCoordinator
                 plan is null ? null : HostLaunchPlanBuilder.FormatArgumentsForLog(plan.Arguments));
     }
 
+    private sealed record ExistingHostBehaviorResult(
+        bool Success,
+        string Code,
+        string Message,
+        PublicShellActivationResult? ActivationResult);
+
     private sealed record HostLaunchOutcome(
         LauncherResult Result,
         Process? Process,
diff --git a/LanMountainDesktop.Launcher/Views/ErrorWindow.axaml b/LanMountainDesktop.Launcher/Views/ErrorWindow.axaml
index 3bfb78b..84482ca 100644
--- a/LanMountainDesktop.Launcher/Views/ErrorWindow.axaml
+++ b/LanMountainDesktop.Launcher/Views/ErrorWindow.axaml
@@ -3,16 +3,20 @@
         xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
         xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
         xmlns:views="clr-namespace:LanMountainDesktop.Launcher.Views"
+        xmlns:ui="using:FluentAvalonia.UI.Controls"
+        xmlns:fi="using:FluentIcons.Avalonia"
         mc:Ignorable="d"
         x:Class="LanMountainDesktop.Launcher.Views.ErrorWindow"
         x:DataType="views:ErrorWindow"
         Title="LanMountain Desktop"
-        Width="560"
-        Height="320"
+        Width="760"
+        Height="460"
+        MinWidth="640"
+        MinHeight="420"
         CanResize="False"
         WindowStartupLocation="CenterScreen"
-        Background="#111318"
-        TransparencyLevelHint="None"
+        Background="{DynamicResource SolidBackgroundFillColorBaseBrush}"
+        TransparencyLevelHint="Mica, AcrylicBlur, None"
         Icon="/Assets/logo.ico">
   <Design.DataContext>
     <views:ErrorWindow />
@@ -20,79 +24,128 @@
 
   <Grid RowDefinitions="*,Auto">
     <Grid Grid.Row="0"
-          Margin="24"
+          Margin="28,24,28,20"
+          RowDefinitions="Auto,Auto,*"
           ColumnDefinitions="Auto,*">
       <Border x:Name="ErrorIconBorder"
               Grid.Column="0"
-              Width="52"
-              Height="52"
-              Margin="0,4,18,0"
-              Background="#2B161A"
-              CornerRadius="26"
+              Width="56"
+              Height="56"
+              Margin="0,0,18,0"
+              Background="{DynamicResource SystemFillColorCriticalBackgroundBrush}"
+              CornerRadius="28"
               VerticalAlignment="Top">
-        <TextBlock Text="!"
-                   FontSize="24"
-                   FontWeight="Bold"
-                   Foreground="#FFB4AB"
-                   HorizontalAlignment="Center"
-                   VerticalAlignment="Center" />
+        <fi:SymbolIcon Symbol="ErrorCircle"
+                       IconVariant="Regular"
+                       FontSize="28"
+                       Foreground="{DynamicResource SystemFillColorCriticalBrush}"
+                       HorizontalAlignment="Center"
+                       VerticalAlignment="Center" />
       </Border>
 
       <StackPanel Grid.Column="1"
-                  Spacing="10">
+                  Spacing="8">
         <TextBlock x:Name="TitleText"
                    Text="Launcher could not confirm startup"
-                   FontSize="20"
+                   FontSize="22"
                    FontWeight="SemiBold"
-                   Foreground="#F6F7FB"
+                   Foreground="{DynamicResource TextFillColorPrimaryBrush}"
                    TextWrapping="Wrap" />
 
         <TextBlock x:Name="ErrorMessageText"
                    Text="LanMountain Desktop did not reach the expected startup state."
                    FontSize="14"
-                   Foreground="#D2D7E1"
+                   Foreground="{DynamicResource TextFillColorSecondaryBrush}"
                    TextWrapping="Wrap"
                    LineHeight="22" />
-
-        <TextBlock x:Name="SuggestionText"
-                   Text="You can inspect logs, retry when the old process is gone, or reactivate the current instance."
-                   FontSize="13"
-                   Foreground="#9BA5B7"
-                   TextWrapping="Wrap"
-                   LineHeight="20" />
       </StackPanel>
+
+      <ui:FAInfoBar x:Name="SuggestionInfoBar"
+                    Grid.Row="1"
+                    Grid.Column="0"
+                    Grid.ColumnSpan="2"
+                    Margin="0,20,0,14"
+                    IsOpen="True"
+                    IsClosable="False"
+                    Severity="Warning"
+                    Title="Startup recovery"
+                    Message="You can inspect logs, wait for the current process, or activate the running desktop instance.">
+        <ui:FAInfoBar.IconSource>
+          <ui:FAFontIconSource Glyph="&#xF0288;"
+                               FontFamily="avares://fluenticons.resources.avalonia/Assets#Seagull Fluent Icons" />
+        </ui:FAInfoBar.IconSource>
+      </ui:FAInfoBar>
+
+      <Expander Grid.Row="2"
+                Grid.Column="0"
+                Grid.ColumnSpan="2"
+                Header="Diagnostic details"
+                IsExpanded="True">
+        <TextBox x:Name="ErrorDetailsTextBox"
+                 Margin="0,10,0,0"
+                 MinHeight="150"
+                 MaxHeight="190"
+                 AcceptsReturn="True"
+                 TextWrapping="Wrap"
+                 IsReadOnly="True"
+                 BorderThickness="0"
+                 FontSize="12"
+                 Text="Stage: launch&#x0a;Code: unknown"
+                 VerticalContentAlignment="Top" />
+      </Expander>
     </Grid>
 
     <Border Grid.Row="1"
-            Padding="24,16"
-            Background="#171A21">
-      <Grid ColumnDefinitions="*,Auto,Auto,Auto"
-            ColumnSpacing="8">
-        <Button x:Name="OpenLogButton"
-                Grid.Column="0"
-                Content="Open Logs"
-                MinWidth="108"
-                Height="34"
-                HorizontalAlignment="Left" />
+            Padding="18,14"
+            Background="{DynamicResource LayerOnMicaBaseAltFillColorDefaultBrush}">
+      <Grid ColumnDefinitions="Auto,*,Auto"
+            ColumnSpacing="12">
+        <StackPanel Grid.Column="0"
+                    Orientation="Horizontal"
+                    Spacing="8">
+          <Button x:Name="OpenLogButton"
+                  MinWidth="112"
+                  Height="34">
+            <StackPanel Orientation="Horizontal" Spacing="6">
+              <fi:SymbolIcon Symbol="FolderOpen" IconVariant="Regular" FontSize="16"/>
+              <TextBlock Text="Open Logs"/>
+            </StackPanel>
+          </Button>
 
-        <Button x:Name="SecondaryActionButton"
-                Grid.Column="1"
-                Content="Wait"
-                MinWidth="108"
-                Height="34"
-                IsVisible="False" />
+          <Button x:Name="CopyDetailsButton"
+                  MinWidth="100"
+                  Height="34">
+            <StackPanel Orientation="Horizontal" Spacing="6">
+              <fi:SymbolIcon Symbol="Copy" IconVariant="Regular" FontSize="16"/>
+              <TextBlock Text="Copy"/>
+            </StackPanel>
+          </Button>
+        </StackPanel>
 
-        <Button x:Name="ExitButton"
-                Grid.Column="2"
-                Content="Exit"
-                MinWidth="90"
-                Height="34" />
+        <StackPanel Grid.Column="2"
+                    Orientation="Horizontal"
+                    Spacing="8">
+          <Button x:Name="SecondaryActionButton"
+                  Content="Wait"
+                  MinWidth="96"
+                  Height="34"
+                  IsVisible="False" />
 
-        <Button x:Name="PrimaryActionButton"
-                Grid.Column="3"
-                Content="Retry"
-                MinWidth="108"
-                Height="34" />
+          <Button x:Name="ExitButton"
+                  MinWidth="92"
+                  Height="34">
+            <StackPanel Orientation="Horizontal" Spacing="6">
+              <fi:SymbolIcon Symbol="Dismiss" IconVariant="Regular" FontSize="16"/>
+              <TextBlock Text="Exit"/>
+            </StackPanel>
+          </Button>
+
+          <Button x:Name="PrimaryActionButton"
+                  Classes="accent"
+                  Content="Retry"
+                  MinWidth="112"
+                  Height="34" />
+        </StackPanel>
       </Grid>
     </Border>
   </Grid>
diff --git a/LanMountainDesktop.Launcher/Views/ErrorWindow.axaml.cs b/LanMountainDesktop.Launcher/Views/ErrorWindow.axaml.cs
index a87271c..b18b456 100644
--- a/LanMountainDesktop.Launcher/Views/ErrorWindow.axaml.cs
+++ b/LanMountainDesktop.Launcher/Views/ErrorWindow.axaml.cs
@@ -1,8 +1,10 @@
 using System.Diagnostics;
 using Avalonia.Controls;
 using Avalonia.Input;
+using Avalonia.Input.Platform;
 using Avalonia.Interactivity;
 using Avalonia.Markup.Xaml;
+using FluentAvalonia.UI.Controls;
 using LanMountainDesktop.Launcher.Services;
 
 namespace LanMountainDesktop.Launcher.Views;
@@ -33,9 +35,21 @@ public partial class ErrorWindow : Window
 
     public void SetErrorMessage(string message)
     {
+        var normalizedMessage = string.IsNullOrWhiteSpace(message)
+            ? "LanMountain Desktop did not reach the expected startup state."
+            : message.Trim();
+        var firstLine = normalizedMessage
+            .Split(['\r', '\n'], StringSplitOptions.RemoveEmptyEntries)
+            .FirstOrDefault() ?? normalizedMessage;
+
         if (this.FindControl<TextBlock>("ErrorMessageText") is { } errorText)
         {
-            errorText.Text = message;
+            errorText.Text = firstLine;
+        }
+
+        if (this.FindControl<TextBox>("ErrorDetailsTextBox") is { } detailsTextBox)
+        {
+            detailsTextBox.Text = normalizedMessage;
         }
     }
 
@@ -120,6 +134,11 @@ public partial class ErrorWindow : Window
         {
             openLogButton.Click += OnOpenLogClick;
         }
+
+        if (this.FindControl<Button>("CopyDetailsButton") is { } copyDetailsButton)
+        {
+            copyDetailsButton.Click += OnCopyDetailsClick;
+        }
     }
 
     private void ApplyActionLayout(
@@ -138,9 +157,9 @@ public partial class ErrorWindow : Window
             titleText.Text = title;
         }
 
-        if (this.FindControl<TextBlock>("SuggestionText") is { } suggestionText)
+        if (this.FindControl<FAInfoBar>("SuggestionInfoBar") is { } suggestionInfoBar)
         {
-            suggestionText.Text = suggestion;
+            suggestionInfoBar.Message = suggestion;
         }
 
         if (this.FindControl<Button>("PrimaryActionButton") is { } primaryButton)
@@ -243,6 +262,28 @@ public partial class ErrorWindow : Window
         await Task.CompletedTask;
     }
 
+    private async void OnCopyDetailsClick(object? sender, RoutedEventArgs e)
+    {
+        try
+        {
+            var details = this.FindControl<TextBox>("ErrorDetailsTextBox")?.Text;
+            if (string.IsNullOrWhiteSpace(details))
+            {
+                details = this.FindControl<TextBlock>("ErrorMessageText")?.Text;
+            }
+
+            var clipboard = TopLevel.GetTopLevel(this)?.Clipboard;
+            if (clipboard is not null && !string.IsNullOrWhiteSpace(details))
+            {
+                await clipboard.SetTextAsync(details);
+            }
+        }
+        catch (Exception ex)
+        {
+            Debug.WriteLine($"[ErrorWindow] Failed to copy diagnostics: {ex}");
+        }
+    }
+
     private void ScanDevPaths()
     {
         var executable = OperatingSystem.IsWindows() ? "LanMountainDesktop.exe" : "LanMountainDesktop";
diff --git a/LanMountainDesktop.Launcher/Views/MultiInstancePromptWindow.axaml b/LanMountainDesktop.Launcher/Views/MultiInstancePromptWindow.axaml
new file mode 100644
index 0000000..99d95f6
--- /dev/null
+++ b/LanMountainDesktop.Launcher/Views/MultiInstancePromptWindow.axaml
@@ -0,0 +1,124 @@
+<Window 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:views="clr-namespace:LanMountainDesktop.Launcher.Views"
+        xmlns:ui="using:FluentAvalonia.UI.Controls"
+        xmlns:fi="using:FluentIcons.Avalonia"
+        mc:Ignorable="d"
+        x:Class="LanMountainDesktop.Launcher.Views.MultiInstancePromptWindow"
+        x:DataType="views:MultiInstancePromptWindow"
+        Title="LanMountain Desktop"
+        Width="620"
+        Height="360"
+        MinWidth="560"
+        MinHeight="330"
+        CanResize="False"
+        WindowStartupLocation="CenterScreen"
+        Background="{DynamicResource SolidBackgroundFillColorBaseBrush}"
+        TransparencyLevelHint="Mica, AcrylicBlur, None"
+        Icon="/Assets/logo.ico">
+  <Design.DataContext>
+    <views:MultiInstancePromptWindow />
+  </Design.DataContext>
+
+  <Grid RowDefinitions="*,Auto">
+    <Grid Grid.Row="0"
+          Margin="28,26,28,20"
+          RowDefinitions="Auto,Auto,*"
+          ColumnDefinitions="Auto,*">
+      <Border Grid.Column="0"
+              Width="52"
+              Height="52"
+              Margin="0,0,18,0"
+              Background="{DynamicResource SystemFillColorAttentionBackgroundBrush}"
+              CornerRadius="26"
+              VerticalAlignment="Top">
+        <fi:SymbolIcon Symbol="Desktop"
+                       IconVariant="Regular"
+                       FontSize="26"
+                       Foreground="{DynamicResource SystemFillColorAttentionBrush}"
+                       HorizontalAlignment="Center"
+                       VerticalAlignment="Center" />
+      </Border>
+
+      <StackPanel Grid.Column="1"
+                  Spacing="8">
+        <TextBlock Text="LanMountain Desktop is already running"
+                   FontSize="22"
+                   FontWeight="SemiBold"
+                   Foreground="{DynamicResource TextFillColorPrimaryBrush}"
+                   TextWrapping="Wrap" />
+        <TextBlock x:Name="MessageText"
+                   Text="Launcher found an existing desktop instance and did not start another process."
+                   FontSize="14"
+                   Foreground="{DynamicResource TextFillColorSecondaryBrush}"
+                   TextWrapping="Wrap"
+                   LineHeight="22" />
+      </StackPanel>
+
+      <ui:FAInfoBar Grid.Row="1"
+                    Grid.Column="0"
+                    Grid.ColumnSpan="2"
+                    Margin="0,22,0,14"
+                    IsOpen="True"
+                    IsClosable="False"
+                    Severity="Informational"
+                    Title="Repeated launch"
+                    Message="Your current setting is to show this prompt without opening the desktop automatically.">
+        <ui:FAInfoBar.IconSource>
+          <ui:FAFontIconSource Glyph="&#xF0288;"
+                               FontFamily="avares://fluenticons.resources.avalonia/Assets#Seagull Fluent Icons" />
+        </ui:FAInfoBar.IconSource>
+      </ui:FAInfoBar>
+
+      <TextBlock x:Name="DetailsText"
+                 Grid.Row="2"
+                 Grid.Column="0"
+                 Grid.ColumnSpan="2"
+                 FontSize="12"
+                 Foreground="{DynamicResource TextFillColorSecondaryBrush}"
+                 TextWrapping="Wrap"
+                 Text="No second Host process was created." />
+    </Grid>
+
+    <Border Grid.Row="1"
+            Padding="18,14"
+            Background="{DynamicResource LayerOnMicaBaseAltFillColorDefaultBrush}">
+      <Grid ColumnDefinitions="*,Auto">
+        <Button x:Name="CopyDetailsButton"
+                Grid.Column="0"
+                MinWidth="104"
+                Height="34"
+                HorizontalAlignment="Left">
+          <StackPanel Orientation="Horizontal" Spacing="6">
+            <fi:SymbolIcon Symbol="Copy" IconVariant="Regular" FontSize="16"/>
+            <TextBlock Text="Copy"/>
+          </StackPanel>
+        </Button>
+
+        <StackPanel Grid.Column="1"
+                    Orientation="Horizontal"
+                    Spacing="8">
+          <Button x:Name="CloseButton"
+                  MinWidth="92"
+                  Height="34">
+            <StackPanel Orientation="Horizontal" Spacing="6">
+              <fi:SymbolIcon Symbol="Dismiss" IconVariant="Regular" FontSize="16"/>
+              <TextBlock Text="Close"/>
+            </StackPanel>
+          </Button>
+          <Button x:Name="OpenDesktopButton"
+                  Classes="accent"
+                  MinWidth="136"
+                  Height="34">
+            <StackPanel Orientation="Horizontal" Spacing="6">
+              <fi:SymbolIcon Symbol="ArrowRight" IconVariant="Regular" FontSize="16"/>
+              <TextBlock Text="Open desktop"/>
+            </StackPanel>
+          </Button>
+        </StackPanel>
+      </Grid>
+    </Border>
+  </Grid>
+</Window>
diff --git a/LanMountainDesktop.Launcher/Views/MultiInstancePromptWindow.axaml.cs b/LanMountainDesktop.Launcher/Views/MultiInstancePromptWindow.axaml.cs
new file mode 100644
index 0000000..65c1d44
--- /dev/null
+++ b/LanMountainDesktop.Launcher/Views/MultiInstancePromptWindow.axaml.cs
@@ -0,0 +1,76 @@
+using Avalonia.Controls;
+using Avalonia.Input.Platform;
+using Avalonia.Interactivity;
+using Avalonia.Markup.Xaml;
+
+namespace LanMountainDesktop.Launcher.Views;
+
+public partial class MultiInstancePromptWindow : Window
+{
+    private readonly TaskCompletionSource<MultiInstancePromptResult> _completionSource =
+        new(TaskCreationOptions.RunContinuationsAsynchronously);
+    private string _details = "LanMountain Desktop is already running.";
+
+    public MultiInstancePromptWindow()
+    {
+        AvaloniaXamlLoader.Load(this);
+        Loaded += OnLoaded;
+        Closed += (_, _) => _completionSource.TrySetResult(MultiInstancePromptResult.Close);
+    }
+
+    public Task<MultiInstancePromptResult> WaitForChoiceAsync() => _completionSource.Task;
+
+    public void SetDetails(int processId, string shellState)
+    {
+        _details = $"Existing host PID: {processId}\nShell state: {shellState}\nNo second Host process was created.";
+
+        if (this.FindControl<TextBlock>("DetailsText") is { } detailsText)
+        {
+            detailsText.Text = _details;
+        }
+    }
+
+    private void OnLoaded(object? sender, RoutedEventArgs e)
+    {
+        if (this.FindControl<Button>("CloseButton") is { } closeButton)
+        {
+            closeButton.Click += (_, _) => Complete(MultiInstancePromptResult.Close);
+        }
+
+        if (this.FindControl<Button>("OpenDesktopButton") is { } openDesktopButton)
+        {
+            openDesktopButton.Click += (_, _) => Complete(MultiInstancePromptResult.OpenDesktop);
+        }
+
+        if (this.FindControl<Button>("CopyDetailsButton") is { } copyDetailsButton)
+        {
+            copyDetailsButton.Click += OnCopyDetailsClick;
+        }
+    }
+
+    private void Complete(MultiInstancePromptResult result)
+    {
+        _completionSource.TrySetResult(result);
+        Close();
+    }
+
+    private async void OnCopyDetailsClick(object? sender, RoutedEventArgs e)
+    {
+        try
+        {
+            if (TopLevel.GetTopLevel(this)?.Clipboard is IClipboard clipboard)
+            {
+                await clipboard.SetTextAsync(_details);
+            }
+        }
+        catch
+        {
+        }
+    }
+}
+
+public enum MultiInstancePromptResult
+{
+    Close,
+    OpenDesktop
+}
diff --git a/LanMountainDesktop.Shared.Contracts/Launcher/HostExitCodes.cs b/LanMountainDesktop.Shared.Contracts/Launcher/HostExitCodes.cs
index f0f78fe..07b8751 100644
--- a/LanMountainDesktop.Shared.Contracts/Launcher/HostExitCodes.cs
+++ b/LanMountainDesktop.Shared.Contracts/Launcher/HostExitCodes.cs
@@ -7,12 +7,12 @@ public static class HostExitCodes
 {
     public const int Success = 0;
 
-    // Secondary instance activated the existing primary instance successfully.
+    // Legacy host-side activation result retained for old builds and launcher compatibility.
     public const int SecondaryActivationSucceeded = 12;
 
-    // Secondary instance failed to activate the existing primary instance.
+    // Legacy host-side activation failure retained for old builds and launcher compatibility.
     public const int SecondaryActivationFailed = 13;
 
-    // Restart relaunch couldn't acquire the single-instance lock in time.
+    // Legacy restart lock failure retained for old builds and launcher compatibility.
     public const int RestartLockNotAcquired = 14;
 }
diff --git a/LanMountainDesktop.Shared.Contracts/Launcher/LauncherIpc.cs b/LanMountainDesktop.Shared.Contracts/Launcher/LauncherIpc.cs
index aea0b84..503c971 100644
--- a/LanMountainDesktop.Shared.Contracts/Launcher/LauncherIpc.cs
+++ b/LanMountainDesktop.Shared.Contracts/Launcher/LauncherIpc.cs
@@ -28,8 +28,6 @@ public record StartupProgressMessage
 
 public static class LauncherIpcConstants
 {
-    public const string PipeName = "LanMountainDesktop_Launcher";
-
     public const string LauncherPidEnvVar = "LMD_LAUNCHER_PID";
 
     public const string PackageRootEnvVar = "LMD_PACKAGE_ROOT";
diff --git a/LanMountainDesktop.Shared.Contracts/Launcher/MultiInstanceLaunchBehavior.cs b/LanMountainDesktop.Shared.Contracts/Launcher/MultiInstanceLaunchBehavior.cs
new file mode 100644
index 0000000..dd58312
--- /dev/null
+++ b/LanMountainDesktop.Shared.Contracts/Launcher/MultiInstanceLaunchBehavior.cs
@@ -0,0 +1,9 @@
+namespace LanMountainDesktop.Shared.Contracts.Launcher;
+
+public enum MultiInstanceLaunchBehavior
+{
+    RestartApp,
+    OpenDesktopSilently,
+    PromptOnly,
+    NotifyAndOpenDesktop
+}
diff --git a/LanMountainDesktop.Tests/HostAppSettingsOobeMergerTests.cs b/LanMountainDesktop.Tests/HostAppSettingsOobeMergerTests.cs
index dd9e7fc..a16a20e 100644
--- a/LanMountainDesktop.Tests/HostAppSettingsOobeMergerTests.cs
+++ b/LanMountainDesktop.Tests/HostAppSettingsOobeMergerTests.cs
@@ -1,4 +1,5 @@
 using LanMountainDesktop.Launcher.Services;
+using LanMountainDesktop.Shared.Contracts.Launcher;
 using Xunit;
 
 namespace LanMountainDesktop.Tests;
@@ -88,4 +89,54 @@ public sealed class HostAppSettingsOobeMergerTests
             Directory.Delete(dir, recursive: true);
         }
     }
+
+    [Theory]
+    [InlineData("RestartApp", MultiInstanceLaunchBehavior.RestartApp)]
+    [InlineData("OpenDesktopSilently", MultiInstanceLaunchBehavior.OpenDesktopSilently)]
+    [InlineData("PromptOnly", MultiInstanceLaunchBehavior.PromptOnly)]
+    [InlineData("NotifyAndOpenDesktop", MultiInstanceLaunchBehavior.NotifyAndOpenDesktop)]
+    public void LoadMultiInstanceLaunchBehavior_ReadsStringValues(
+        string value,
+        MultiInstanceLaunchBehavior expected)
+    {
+        var dir = Path.Combine(Path.GetTempPath(), "LMD.MultiInstanceSettings", Guid.NewGuid().ToString("N"));
+        Directory.CreateDirectory(dir);
+        var path = Path.Combine(dir, "settings.json");
+        File.WriteAllText(path, $$"""
+        {
+          "MultiInstanceLaunchBehavior": "{{value}}"
+        }
+        """);
+
+        try
+        {
+            Assert.Equal(expected, HostAppSettingsOobeMerger.LoadMultiInstanceLaunchBehavior(path));
+        }
+        finally
+        {
+            Directory.Delete(dir, recursive: true);
+        }
+    }
+
+    [Theory]
+    [InlineData("{}")]
+    [InlineData("{ \"MultiInstanceLaunchBehavior\": \"Unknown\" }")]
+    public void LoadMultiInstanceLaunchBehavior_FallsBackToNotifyAndOpenDesktop(string json)
+    {
+        var dir = Path.Combine(Path.GetTempPath(), "LMD.MultiInstanceSettings", Guid.NewGuid().ToString("N"));
+        Directory.CreateDirectory(dir);
+        var path = Path.Combine(dir, "settings.json");
+        File.WriteAllText(path, json);
+
+        try
+        {
+            Assert.Equal(
+                MultiInstanceLaunchBehavior.NotifyAndOpenDesktop,
+                HostAppSettingsOobeMerger.LoadMultiInstanceLaunchBehavior(path));
+        }
+        finally
+        {
+            Directory.Delete(dir, recursive: true);
+        }
+    }
 }
diff --git a/LanMountainDesktop.Tests/LauncherMultiInstancePolicyTests.cs b/LanMountainDesktop.Tests/LauncherMultiInstancePolicyTests.cs
new file mode 100644
index 0000000..dd3df24
--- /dev/null
+++ b/LanMountainDesktop.Tests/LauncherMultiInstancePolicyTests.cs
@@ -0,0 +1,123 @@
+using LanMountainDesktop.Launcher;
+using LanMountainDesktop.Launcher.Services;
+using LanMountainDesktop.Models;
+using LanMountainDesktop.Shared.Contracts.Launcher;
+using LanMountainDesktop.Shared.IPC.Abstractions.Services;
+using Xunit;
+
+namespace LanMountainDesktop.Tests;
+
+public sealed class LauncherMultiInstancePolicyTests
+{
+    [Fact]
+    public void AppSettingsSnapshot_DefaultsToNotifyAndOpenDesktop()
+    {
+        Assert.Equal(
+            MultiInstanceLaunchBehavior.NotifyAndOpenDesktop,
+            new AppSettingsSnapshot().MultiInstanceLaunchBehavior);
+    }
+
+    [Fact]
+    public void ShouldProbeExistingHostBeforeLaunch_ReturnsTrue_ForNormalLaunch()
+    {
+        var context = CommandContext.FromArgs(["launch"]);
+
+        Assert.True(LauncherFlowCoordinator.ShouldProbeExistingHostBeforeLaunch(context));
+    }
+
+    [Fact]
+    public void ShouldProbeExistingHostBeforeLaunch_ReturnsFalse_ForRestartLaunch()
+    {
+        var context = CommandContext.FromArgs([
+            "launch",
+            $"--{LauncherIpcConstants.LaunchSourceOptionName}=restart"
+        ]);
+
+        Assert.False(LauncherFlowCoordinator.ShouldProbeExistingHostBeforeLaunch(context));
+    }
+
+    [Fact]
+    public void ActivationExitCodes_AreClassifiedSeparatelyFromEarlyHostExit()
+    {
+        Assert.True(LauncherFlowCoordinator.IsSuccessfulActivationExitCode(HostExitCodes.SecondaryActivationSucceeded));
+        Assert.True(LauncherFlowCoordinator.IsFailedActivationExitCode(HostExitCodes.SecondaryActivationFailed));
+        Assert.True(LauncherFlowCoordinator.IsFailedActivationExitCode(HostExitCodes.RestartLockNotAcquired));
+        Assert.False(LauncherFlowCoordinator.IsFailedActivationExitCode(1));
+    }
+
+    [Fact]
+    public void IsRecoverableActivationFailure_ReturnsTrue_WhenPublicIpcIsReadyButShellIsPending()
+    {
+        var activation = new PublicShellActivationResult(
+            false,
+            "shell_not_ready",
+            "Desktop shell is still initializing.",
+            CreateShellStatus(
+                publicIpcReady: true,
+                mainWindowOpened: false,
+                desktopVisible: false));
+
+        Assert.True(LauncherFlowCoordinator.IsRecoverableActivationFailure(activation));
+    }
+
+    [Fact]
+    public void IsRecoverableActivationFailure_ReturnsFalse_WhenShutdownIsInProgress()
+    {
+        var activation = new PublicShellActivationResult(
+            false,
+            "shutdown_in_progress",
+            "Desktop is shutting down.",
+            CreateShellStatus(
+                publicIpcReady: true,
+                mainWindowOpened: false,
+                desktopVisible: false));
+
+        Assert.False(LauncherFlowCoordinator.IsRecoverableActivationFailure(activation));
+    }
+
+    [Fact]
+    public void IsExistingHostReadyForLauncherDecision_RequiresPublicIpcReady()
+    {
+        Assert.False(LauncherFlowCoordinator.IsExistingHostReadyForLauncherDecision(null));
+        Assert.False(LauncherFlowCoordinator.IsExistingHostReadyForLauncherDecision(CreateShellStatus(
+            publicIpcReady: false,
+            mainWindowOpened: true,
+            desktopVisible: true)));
+        Assert.True(LauncherFlowCoordinator.IsExistingHostReadyForLauncherDecision(CreateShellStatus(
+            publicIpcReady: true,
+            mainWindowOpened: true,
+            desktopVisible: true)));
+    }
+
+
+    private static PublicShellStatus CreateShellStatus(
+        bool publicIpcReady,
+        bool mainWindowOpened,
+        bool desktopVisible)
+    {
+        return new PublicShellStatus(
+            ProcessId: Environment.ProcessId,
+            StartedAtUtc: DateTimeOffset.UtcNow,
+            LaunchSource: "normal",
+            ShellState: mainWindowOpened ? "opened" : "initializing",
+            MainWindowCreated: mainWindowOpened,
+            MainWindowVisible: desktopVisible,
+            MainWindowOpened: mainWindowOpened,
+            DesktopVisible: desktopVisible,
+            PublicIpcReady: publicIpcReady,
+            Tray: new PublicTrayStatus(
+                State: "Unavailable",
+                IsReady: false,
+                HasIcon: false,
+                HasMenu: false,
+                IsVisible: false,
+                ConsecutiveRecoveryFailures: 0),
+            Taskbar: new PublicTaskbarStatus(
+                RequestedBySettings: false,
+                MainWindowExists: mainWindowOpened,
+                MainWindowShowInTaskbar: mainWindowOpened,
+                MainWindowVisible: desktopVisible,
+                MainWindowMinimized: false,
+                IsUsable: mainWindowOpened));
+    }
+}
diff --git a/LanMountainDesktop.Tests/NotificationListenerServiceTests.cs b/LanMountainDesktop.Tests/NotificationListenerServiceTests.cs
new file mode 100644
index 0000000..c0e3af7
--- /dev/null
+++ b/LanMountainDesktop.Tests/NotificationListenerServiceTests.cs
@@ -0,0 +1,106 @@
+using LanMountainDesktop.Models;
+using LanMountainDesktop.PluginSdk;
+using LanMountainDesktop.Services;
+using Xunit;
+
+namespace LanMountainDesktop.Tests;
+
+public sealed class NotificationListenerServiceTests
+{
+    [Fact]
+    public void AddNotification_DeduplicatesByPlatformAndSourceId()
+    {
+        var settings = new FakeSettingsService();
+        var service = new NotificationListenerService(settings);
+
+        service.AddNotification(new NotificationItem
+        {
+            Platform = "Windows",
+            SourceNotificationId = "42",
+            AppId = "mail",
+            AppName = "Mail",
+            Title = "First"
+        });
+        service.AddNotification(new NotificationItem
+        {
+            Platform = "Windows",
+            SourceNotificationId = "42",
+            AppId = "mail",
+            AppName = "Mail",
+            Title = "Updated"
+        });
+
+        var notification = Assert.Single(service.GetNotifications());
+        Assert.Equal("Updated", notification.Title);
+    }
+
+    [Fact]
+    public void AddNotification_RespectsBlockedApps()
+    {
+        var settings = new FakeSettingsService();
+        settings.Snapshot.NotificationBoxBlockedApps.Add("blocked-app");
+        var service = new NotificationListenerService(settings);
+
+        service.AddNotification(new NotificationItem
+        {
+            AppId = "blocked-app",
+            AppName = "Blocked",
+            Title = "Hidden"
+        });
+
+        Assert.Empty(service.GetNotifications());
+    }
+
+    [Fact]
+    public void AddNotification_TrimsToMaxStoredCount()
+    {
+        var settings = new FakeSettingsService();
+        settings.Snapshot.NotificationBoxMaxStoredCount = 2;
+        var service = new NotificationListenerService(settings);
+
+        service.AddNotification(new NotificationItem { AppId = "a", AppName = "A", Title = "1" });
+        service.AddNotification(new NotificationItem { AppId = "b", AppName = "B", Title = "2" });
+        service.AddNotification(new NotificationItem { AppId = "c", AppName = "C", Title = "3" });
+
+        var notifications = service.GetNotifications();
+        Assert.Equal(2, notifications.Count);
+        Assert.DoesNotContain(notifications, n => n.Title == "1");
+    }
+
+    private sealed class FakeSettingsService : ISettingsService
+    {
+        public AppSettingsSnapshot Snapshot { get; } = new();
+
+        public event EventHandler<SettingsChangedEvent>? Changed;
+
+        public T LoadSnapshot<T>(SettingsScope scope, string? subjectId = null, string? placementId = null) where T : new()
+            => typeof(T) == typeof(AppSettingsSnapshot)
+                ? (T)(object)Snapshot
+                : new T();
+
+        public void SaveSnapshot<T>(SettingsScope scope, T snapshot, string? subjectId = null, string? placementId = null, string? sectionId = null, IReadOnlyCollection<string>? changedKeys = null)
+        {
+        }
+
+        public T LoadSection<T>(SettingsScope scope, string subjectId, string sectionId, string? placementId = null) where T : new()
+            => new();
+
+        public void SaveSection<T>(SettingsScope scope, string subjectId, string sectionId, T section, string? placementId = null, IReadOnlyCollection<string>? changedKeys = null)
+        {
+        }
+
+        public void DeleteSection(SettingsScope scope, string subjectId, string sectionId, string? placementId = null)
+        {
+        }
+
+        public T? GetValue<T>(SettingsScope scope, string key, string? subjectId = null, string? placementId = null, string? sectionId = null)
+            => default;
+
+        public void SetValue<T>(SettingsScope scope, string key, T value, string? subjectId = null, string? placementId = null, string? sectionId = null, IReadOnlyCollection<string>? changedKeys = null)
+        {
+        }
+
+        public IComponentSettingsAccessor GetComponentAccessor(string componentId, string? placementId)
+            => throw new NotSupportedException();
+    }
+}
diff --git a/LanMountainDesktop.Tests/SingleInstanceServiceTests.cs b/LanMountainDesktop.Tests/SingleInstanceServiceTests.cs
deleted file mode 100644
index 305b727..0000000
--- a/LanMountainDesktop.Tests/SingleInstanceServiceTests.cs
+++ /dev/null
@@ -1,102 +0,0 @@
-using System;
-using System.Reflection;
-using System.Threading;
-using System.Threading.Tasks;
-using LanMountainDesktop.Services;
-using Xunit;
-
-namespace LanMountainDesktop.Tests;
-
-public sealed class SingleInstanceServiceTests
-{
-    [Fact]
-    public async Task TryNotifyPrimaryInstance_ReturnsTrue_WhenPrimaryAcknowledges()
-    {
-        var mutexName = $"Local\\LanMountainDesktop.Tests.SingleInstance.{Guid.NewGuid():N}";
-        var pipeName = $"LanMountainDesktop.Tests.Activate.{Guid.NewGuid():N}";
-
-        using var primary = CreateService(mutexName, pipeName);
-        using var secondary = CreateSecondaryService(mutexName, pipeName);
-        Assert.True(primary.IsPrimaryInstance);
-        MarkAsSecondaryForTest(secondary);
-
-        var activated = new TaskCompletionSource(TaskCreationOptions.RunContinuationsAsynchronously);
-        primary.StartActivationListener(() => activated.TrySetResult());
-
-        var acknowledged = secondary.TryNotifyPrimaryInstance(TimeSpan.FromSeconds(2), out var failureReason);
-
-        Assert.True(acknowledged);
-        Assert.Null(failureReason);
-
-        var completed = await Task.WhenAny(activated.Task, Task.Delay(TimeSpan.FromSeconds(2)));
-        Assert.Same(activated.Task, completed);
-    }
-
-    [Fact]
-    public void TryNotifyPrimaryInstance_ReturnsFalse_WhenListenerIsNotRunning()
-    {
-        var mutexName = $"Local\\LanMountainDesktop.Tests.SingleInstance.{Guid.NewGuid():N}";
-        var pipeName = $"LanMountainDesktop.Tests.Activate.{Guid.NewGuid():N}";
-
-        using var primary = CreateService(mutexName, pipeName);
-        using var secondary = CreateSecondaryService(mutexName, pipeName);
-        Assert.True(primary.IsPrimaryInstance);
-        MarkAsSecondaryForTest(secondary);
-
-        var acknowledged = secondary.TryNotifyPrimaryInstance(TimeSpan.FromMilliseconds(300), out var failureReason);
-
-        Assert.False(acknowledged);
-        Assert.False(string.IsNullOrWhiteSpace(failureReason));
-    }
-
-    private static SingleInstanceService CreateService(string mutexName, string pipeName)
-    {
-        var ctor = typeof(SingleInstanceService).GetConstructor(
-            BindingFlags.Instance | BindingFlags.NonPublic,
-            binder: null,
-            [typeof(string), typeof(string)],
-            modifiers: null);
-
-        Assert.NotNull(ctor);
-        return (SingleInstanceService)ctor!.Invoke([mutexName, pipeName]);
-    }
-
-    private static SingleInstanceService CreateSecondaryService(string mutexName, string pipeName)
-    {
-        SingleInstanceService? created = null;
-        Exception? creationError = null;
-        var thread = new Thread(() =>
-        {
-            try
-            {
-                created = CreateService(mutexName, pipeName);
-            }
-            catch (Exception ex)
-            {
-                creationError = ex;
-            }
-        });
-
-        thread.IsBackground = true;
-        thread.Start();
-        thread.Join();
-
-        if (creationError is not null)
-        {
-            throw new InvalidOperationException("Failed to create secondary SingleInstanceService.", creationError);
-        }
-
-        Assert.NotNull(created);
-        return created!;
-    }
-
-    private static void MarkAsSecondaryForTest(SingleInstanceService service)
-    {
-        var ownsMutexField = typeof(SingleInstanceService).GetField(
-            "_ownsMutex",
-            BindingFlags.Instance | BindingFlags.NonPublic);
-        Assert.NotNull(ownsMutexField);
-        ownsMutexField!.SetValue(service, false);
-        Assert.False(service.IsPrimaryInstance);
-    }
-}
diff --git a/LanMountainDesktop/App.axaml.cs b/LanMountainDesktop/App.axaml.cs
index a59d19a..3a45522 100644
--- a/LanMountainDesktop/App.axaml.cs
+++ b/LanMountainDesktop/App.axaml.cs
@@ -20,7 +20,6 @@ using LanMountainDesktop.Models;
 using LanMountainDesktop.PluginSdk;
 using LanMountainDesktop.Services;
 using LanMountainDesktop.Services.ExternalIpc;
-using LanMountainDesktop.Services.Launcher;
 using LanMountainDesktop.Services.Loading;
 using LanMountainDesktop.Services.Settings;
 using LanMountainDesktop.Services.Update;
@@ -83,7 +82,6 @@ public partial class App : Application
     private PublicIpcHostService? _publicIpcHostService;
     private LoadingStateManager? _loadingStateManager;
     private LoadingStateReporter? _loadingStateReporter;
-    private bool _singleInstanceReleased;
     private int _forcedExitScheduled;
     private volatile bool _desktopShellInitializationStarted;
     private bool _mainWindowOpened;
@@ -91,7 +89,6 @@ public partial class App : Application
     private readonly object _launcherProgressLock = new();
     private readonly List<StartupProgressMessage> _pendingLauncherProgressMessages = [];
 
-    internal static SingleInstanceService? CurrentSingleInstanceService { get; set; }
     internal static IHostApplicationLifecycle? CurrentHostApplicationLifecycle =>
         (Current as App)?._hostApplicationLifecycle;
     internal static INotificationService? CurrentNotificationService =>
@@ -213,7 +210,6 @@ public partial class App : Application
 
         LinuxDesktopEntryInstaller.EnsureInstalled();
         InitializePublicIpc();
-        CurrentSingleInstanceService?.StartActivationListener(ActivateMainWindow);
         _ = InitializeLauncherIpcAsync();
         DesktopBootstrap.InitializeApplication(this, InitializeDesktopShell);
 
@@ -368,7 +364,7 @@ public partial class App : Application
                 CreateAndAssignMainWindow(desktop, "FrameworkInitialization");
             },
             OnDesktopLifetimeExit,
-            () => CurrentSingleInstanceService?.StartActivationListener(ActivateMainWindow),
+            static () => { },
             StartWeatherLocationRefreshIfNeeded);
         _desktopShellHost.Initialize(this);
     }
@@ -377,7 +373,6 @@ public partial class App : Application
     {
         AppLogger.Info("App", "Desktop lifetime exit triggered.");
         PerformExitCleanup();
-        ReleaseSingleInstanceAfterExit("DesktopLifetimeExit");
         ScheduleForcedProcessTermination("DesktopLifetimeExit");
     }
 
@@ -396,7 +391,7 @@ public partial class App : Application
             return;
         }
 
-        RestoreOrCreateMainWindow(showSingleInstanceNotice: false, source: "TrayMenu");
+        RestoreOrCreateMainWindow("TrayMenu");
     }
 
     private void OnTrayRestartClick(object? sender, EventArgs e)
@@ -723,7 +718,7 @@ public partial class App : Application
 
         if (_desktopShellState == DesktopShellState.TrayOnly)
         {
-            RestoreOrCreateMainWindow(showSingleInstanceNotice: false, source: "TrayAvailabilityFailed");
+            RestoreOrCreateMainWindow("TrayAvailabilityFailed");
             return;
         }
 
@@ -734,7 +729,7 @@ public partial class App : Application
             !taskbarUsable &&
             (_desktopTrayService?.ConsecutiveRecoveryFailures ?? 0) >= 3)
         {
-            RestoreOrCreateMainWindow(showSingleInstanceNotice: false, source: "TrayAvailabilityRepeatedFailure");
+            RestoreOrCreateMainWindow("TrayAvailabilityRepeatedFailure");
         }
     }
 
@@ -862,39 +857,7 @@ public partial class App : Application
         Resources["AppFontFamily"] = fontFamily;
     }
 
-    internal void ActivateMainWindow()
-    {
-        AppLogger.Info("SingleInstance", $"Activation callback received. Pid={Environment.ProcessId}.");
-
-        if (!_desktopShellInitializationStarted && _mainWindow is null)
-        {
-            AppLogger.Info("SingleInstance", "Activation acknowledged while desktop shell is still initializing.");
-            return;
-        }
-
-        try
-        {
-            var restored = Dispatcher.UIThread.CheckAccess()
-                ? RestoreOrCreateMainWindowCore(showSingleInstanceNotice: true, source: "SingleInstance")
-                : Dispatcher.UIThread.InvokeAsync(
-                    () => RestoreOrCreateMainWindowCore(showSingleInstanceNotice: true, source: "SingleInstance"),
-                    DispatcherPriority.Send).GetAwaiter().GetResult();
-
-            if (!restored)
-            {
-                AppLogger.Warn("SingleInstance", "Activation callback could not restore the main window yet.");
-                return;
-            }
-
-            AppLogger.Info("SingleInstance", "Activation callback completed successfully.");
-        }
-        catch (Exception ex)
-        {
-            AppLogger.Warn("SingleInstance", "Activation callback failed while restoring the desktop shell.", ex);
-        }
-    }
-
-    private void RestoreOrCreateMainWindow(bool showSingleInstanceNotice, string source)
+    private void RestoreOrCreateMainWindow(string source)
     {
         if (IsShutdownInProgress)
         {
@@ -904,11 +867,11 @@ public partial class App : Application
 
         Dispatcher.UIThread.Post(() =>
         {
-            _ = RestoreOrCreateMainWindowCore(showSingleInstanceNotice, source);
+            _ = RestoreOrCreateMainWindowCore(source);
         }, DispatcherPriority.Send);
     }
 
-    private bool RestoreOrCreateMainWindowCore(bool showSingleInstanceNotice, string source)
+    private bool RestoreOrCreateMainWindowCore(string source)
     {
         if (IsShutdownInProgress)
         {
@@ -966,12 +929,7 @@ public partial class App : Application
             SetDesktopShellState(DesktopShellState.ForegroundDesktop, $"Restore:{source}");
             AppLogger.Info(
                 "DesktopShell",
-                $"Desktop restored. Source='{source}'; MainWindowClosed={_mainWindowClosed}; ShowSingleInstanceNotice={showSingleInstanceNotice}; WindowState='{mainWindow.WindowState}'.");
-
-            if (showSingleInstanceNotice)
-            {
-                mainWindow.ShowSingleInstanceNotice();
-            }
+                $"Desktop restored. Source='{source}'; MainWindowClosed={_mainWindowClosed}; WindowState='{mainWindow.WindowState}'.");
 
             return true;
         }
@@ -989,7 +947,7 @@ public partial class App : Application
             _transparentOverlayWindow = new TransparentOverlayWindow();
             _transparentOverlayWindow.RestoreMainWindowRequested += (s, e) =>
             {
-                RestoreOrCreateMainWindow(showSingleInstanceNotice: false, source: "TransparentOverlay");
+                RestoreOrCreateMainWindow("TransparentOverlay");
             };
             _transparentOverlayWindow.ExitEditRequested += (s, e) =>
             {
@@ -1044,7 +1002,6 @@ public partial class App : Application
         ScheduleForcedProcessTermination($"ShutdownRequest:{source}");
         StopShellRecoveryWatchdog();
         PerformExitCleanup();
-        ReleaseSingleInstanceAfterExit($"ShutdownRequest:{source}");
 
         try
         {
@@ -1195,33 +1152,6 @@ public partial class App : Application
         _appearanceThemeService.ApplyThemeResources(Resources);
     }
 
-    private void ReleaseSingleInstanceAfterExit(string source)
-    {
-        if (_singleInstanceReleased)
-        {
-            return;
-        }
-
-        _singleInstanceReleased = true;
-        var singleInstance = CurrentSingleInstanceService;
-        CurrentSingleInstanceService = null;
-        if (singleInstance is null)
-        {
-            AppLogger.Info("SingleInstance", $"No single-instance handle to release. Source='{source}'.");
-            return;
-        }
-
-        try
-        {
-            singleInstance.Dispose();
-            AppLogger.Info("SingleInstance", $"Released single-instance handle. Source='{source}'.");
-        }
-        catch (Exception ex)
-        {
-            AppLogger.Warn("SingleInstance", $"Failed to release single-instance handle. Source='{source}'.", ex);
-        }
-    }
-
     private void ScheduleForcedProcessTermination(string source)
     {
         if (Interlocked.Exchange(ref _forcedExitScheduled, 1) != 0)
@@ -1809,7 +1739,7 @@ public partial class App : Application
                 GetPublicShellStatus());
         }
 
-        var restored = RestoreOrCreateMainWindowCore(showSingleInstanceNotice: false, source);
+        var restored = RestoreOrCreateMainWindowCore(source);
         var status = GetPublicShellStatus();
         if (restored)
         {
diff --git a/LanMountainDesktop/Assets/Weather/ATTRIBUTION.md b/LanMountainDesktop/Assets/Weather/ATTRIBUTION.md
deleted file mode 100644
index c7ab638..0000000
--- a/LanMountainDesktop/Assets/Weather/ATTRIBUTION.md
+++ /dev/null
@@ -1,40 +0,0 @@
-# 天气背景资源署名
-
-## 中文
-
-本目录中的天气背景图像主要来自 **Pexels**，并按 Pexels License 使用：
-
-- License: https://www.pexels.com/license/
-
-### 原始来源
-
-- `clear_sky.jpg`
-  - https://www.pexels.com/photo/a-clear-blue-sky-with-few-clouds-on-a-sunny-day-29390199/
-- `rain.jpg`
-  - https://www.pexels.com/photo/rain-on-window-with-bokeh-lights-35075853/
-- `snow.jpg`
-  - https://www.pexels.com/photo/mountain-covered-with-snow-209955/
-- `storm.jpg`
-  - https://www.pexels.com/photo/sea-under-a-stormy-sky-4609228/
-
-### 派生资源
-
-以下文件由上述基础图片经过色彩、亮度或风格调整后生成，用于适配阑山桌面的天气组件视觉：
-
-- `clear_day.jpg`
-- `clear_night.jpg`
-- `cloudy_day.jpg`
-- `cloudy_night.jpg`
-- `rain_light.jpg`
-- `rain_heavy.jpg`
-- `storm_dark.jpg`
-- `fog_haze.jpg`
-- `snow_soft.jpg`
-
-## English
-
-The weather background images in this directory are primarily sourced from **Pexels** and used under the Pexels License:
-
-- License: https://www.pexels.com/license/
-
-Derived variants in this repository are adjusted from the listed base assets for widget presentation.
diff --git a/LanMountainDesktop/Assets/Weather/HyperOS3/ATTRIBUTION.md b/LanMountainDesktop/Assets/Weather/HyperOS3/ATTRIBUTION.md
deleted file mode 100644
index 1422532..0000000
--- a/LanMountainDesktop/Assets/Weather/HyperOS3/ATTRIBUTION.md
+++ /dev/null
@@ -1,37 +0,0 @@
-# HyperOS3 天气资源署名
-
-## 中文
-
-本目录中的 HyperOS3 风格天气资源来自用户提供的 Xiaomi Weather 安装包提取内容，以及基于该视觉方向制作的项目内派生资源。
-
-### 提取来源
-
-- Source APK: `c:\Program Files\Netease\GameViewer\Download\MI SKY 12.apk`
-- Package: `com.miui.weather2`
-- Extraction date: `2026-03-03`
-
-### 用途说明
-
-- 这些资源仅用于项目内部视觉研究、原型还原和界面适配。
-- 使用时应遵守小米相关许可与使用条款。
-
-### 额外派生资源
-
-以下文件为项目内基于上述视觉方向制作的派生素材：
-
-- `Icons/icon_hero_sun_soft.png`
-- `Icons/icon_hero_moon_soft.png`
-- `Icons/icon_mini_partly_cloudy_day_soft.png`
-- `Icons/icon_mini_partly_cloudy_night_soft.png`
-- `Icons/icon_mini_cloudy_soft.png`
-- `Icons/icon_mini_rain_light_soft.png`
-- `Icons/icon_mini_rain_heavy_soft.png`
-- `Icons/icon_mini_storm_soft.png`
-- `Icons/icon_mini_snow_soft.png`
-- `Icons/icon_mini_fog_soft.png`
-
-## English
-
-The HyperOS3-style weather assets in this directory were extracted from a Xiaomi Weather APK provided by the user, together with additional derivative assets created in-repo to match the same visual direction.
-
-Use these resources only in accordance with Xiaomi's applicable license and usage terms.
diff --git a/LanMountainDesktop/Assets/Weather/HyperOS3/Icons/icon_cloudy.webp b/LanMountainDesktop/Assets/Weather/HyperOS3/Icons/icon_cloudy.webp
deleted file mode 100644
index 228d2bd..0000000
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diff --git a/LanMountainDesktop/Assets/Weather/HyperOS3/Icons/icon_haze.webp b/LanMountainDesktop/Assets/Weather/HyperOS3/Icons/icon_haze.webp
deleted file mode 100644
index f34ef53..0000000
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diff --git a/LanMountainDesktop/Assets/Weather/HyperOS3/Icons/icon_hero_moon_soft.png b/LanMountainDesktop/Assets/Weather/HyperOS3/Icons/icon_hero_moon_soft.png
deleted file mode 100644
index a17b056..0000000
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diff --git a/LanMountainDesktop/Assets/Weather/HyperOS3/Icons/icon_hero_sun_soft.png b/LanMountainDesktop/Assets/Weather/HyperOS3/Icons/icon_hero_sun_soft.png
deleted file mode 100644
index 0b95e2d..0000000
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diff --git a/LanMountainDesktop/Assets/Weather/HyperOS3/Icons/icon_mini_cloudy_soft.png b/LanMountainDesktop/Assets/Weather/HyperOS3/Icons/icon_mini_cloudy_soft.png
deleted file mode 100644
index 9d752f9..0000000
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diff --git a/LanMountainDesktop/Assets/Weather/HyperOS3/Icons/icon_mini_fog_soft.png b/LanMountainDesktop/Assets/Weather/HyperOS3/Icons/icon_mini_fog_soft.png
deleted file mode 100644
index 764884d..0000000
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diff --git a/LanMountainDesktop/Assets/Weather/HyperOS3/Icons/icon_mini_partly_cloudy_day_soft.png b/LanMountainDesktop/Assets/Weather/HyperOS3/Icons/icon_mini_partly_cloudy_day_soft.png
deleted file mode 100644
index 3ee7efe..0000000
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diff --git a/LanMountainDesktop/Assets/Weather/HyperOS3/Icons/icon_mini_partly_cloudy_night_soft.png b/LanMountainDesktop/Assets/Weather/HyperOS3/Icons/icon_mini_partly_cloudy_night_soft.png
deleted file mode 100644
index 3ba9cbe..0000000
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diff --git a/LanMountainDesktop/Assets/Weather/HyperOS3/Icons/icon_mini_rain_heavy_soft.png b/LanMountainDesktop/Assets/Weather/HyperOS3/Icons/icon_mini_rain_heavy_soft.png
deleted file mode 100644
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deleted file mode 100644
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diff --git a/LanMountainDesktop/Assets/Weather/HyperOS3/Icons/icon_mini_snow_soft.png b/LanMountainDesktop/Assets/Weather/HyperOS3/Icons/icon_mini_snow_soft.png
deleted file mode 100644
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diff --git a/LanMountainDesktop/Assets/Weather/HyperOS3/Icons/icon_mini_storm_soft.png b/LanMountainDesktop/Assets/Weather/HyperOS3/Icons/icon_mini_storm_soft.png
deleted file mode 100644
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diff --git a/LanMountainDesktop/Assets/Weather/HyperOS3/Icons/icon_moon_clear.webp b/LanMountainDesktop/Assets/Weather/HyperOS3/Icons/icon_moon_clear.webp
deleted file mode 100644
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deleted file mode 100644
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diff --git a/LanMountainDesktop/Assets/Weather/HyperOS3/Icons/icon_partly_cloudy_night.webp b/LanMountainDesktop/Assets/Weather/HyperOS3/Icons/icon_partly_cloudy_night.webp
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index 38aa31e..0000000
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diff --git a/LanMountainDesktop/Assets/Weather/HyperOS3/Icons/icon_rain_heavy.webp b/LanMountainDesktop/Assets/Weather/HyperOS3/Icons/icon_rain_heavy.webp
deleted file mode 100644
index 6f233f6..0000000
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diff --git a/LanMountainDesktop/Assets/Weather/HyperOS3/Icons/icon_rain_light.webp b/LanMountainDesktop/Assets/Weather/HyperOS3/Icons/icon_rain_light.webp
deleted file mode 100644
index e373622..0000000
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diff --git a/LanMountainDesktop/Assets/Weather/HyperOS3/Icons/icon_sleet.webp b/LanMountainDesktop/Assets/Weather/HyperOS3/Icons/icon_sleet.webp
deleted file mode 100644
index 50d69bd..0000000
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diff --git a/LanMountainDesktop/Assets/Weather/HyperOS3/Icons/icon_snow.webp b/LanMountainDesktop/Assets/Weather/HyperOS3/Icons/icon_snow.webp
deleted file mode 100644
index b17c064..0000000
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diff --git a/LanMountainDesktop/Assets/Weather/HyperOS3/Icons/icon_sunny_day.webp b/LanMountainDesktop/Assets/Weather/HyperOS3/Icons/icon_sunny_day.webp
deleted file mode 100644
index 96d98c8..0000000
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diff --git a/LanMountainDesktop/Assets/Weather/HyperOS3/Icons/icon_thunder.webp b/LanMountainDesktop/Assets/Weather/HyperOS3/Icons/icon_thunder.webp
deleted file mode 100644
index 4602164..0000000
Binary files a/LanMountainDesktop/Assets/Weather/HyperOS3/Icons/icon_thunder.webp and /dev/null differ
diff --git a/LanMountainDesktop/Assets/Weather/HyperOS3/Icons/icon_windy.webp b/LanMountainDesktop/Assets/Weather/HyperOS3/Icons/icon_windy.webp
deleted file mode 100644
index 2c55d40..0000000
Binary files a/LanMountainDesktop/Assets/Weather/HyperOS3/Icons/icon_windy.webp and /dev/null differ
diff --git a/LanMountainDesktop/Assets/Weather/HyperOS3/hyper_cross_sky_day.png b/LanMountainDesktop/Assets/Weather/HyperOS3/hyper_cross_sky_day.png
deleted file mode 100644
index 8af2167..0000000
Binary files a/LanMountainDesktop/Assets/Weather/HyperOS3/hyper_cross_sky_day.png and /dev/null differ
diff --git a/LanMountainDesktop/Assets/Weather/HyperOS3/hyper_cross_sky_night.png b/LanMountainDesktop/Assets/Weather/HyperOS3/hyper_cross_sky_night.png
deleted file mode 100644
index 80322ab..0000000
Binary files a/LanMountainDesktop/Assets/Weather/HyperOS3/hyper_cross_sky_night.png and /dev/null differ
diff --git a/LanMountainDesktop/Assets/Weather/HyperOS3/hyper_fog.png b/LanMountainDesktop/Assets/Weather/HyperOS3/hyper_fog.png
deleted file mode 100644
index f1aa1e7..0000000
Binary files a/LanMountainDesktop/Assets/Weather/HyperOS3/hyper_fog.png and /dev/null differ
diff --git a/LanMountainDesktop/Assets/Weather/HyperOS3/hyper_haze.png b/LanMountainDesktop/Assets/Weather/HyperOS3/hyper_haze.png
deleted file mode 100644
index e24725a..0000000
Binary files a/LanMountainDesktop/Assets/Weather/HyperOS3/hyper_haze.png and /dev/null differ
diff --git a/LanMountainDesktop/Assets/Weather/HyperOS3/hyper_rain_drop.png b/LanMountainDesktop/Assets/Weather/HyperOS3/hyper_rain_drop.png
deleted file mode 100644
index bcb304b..0000000
Binary files a/LanMountainDesktop/Assets/Weather/HyperOS3/hyper_rain_drop.png and /dev/null differ
diff --git a/LanMountainDesktop/Assets/Weather/HyperOS3/hyper_sky_back.png b/LanMountainDesktop/Assets/Weather/HyperOS3/hyper_sky_back.png
deleted file mode 100644
index 3593e2a..0000000
Binary files a/LanMountainDesktop/Assets/Weather/HyperOS3/hyper_sky_back.png and /dev/null differ
diff --git a/LanMountainDesktop/Assets/Weather/HyperOS3/hyper_sky_bottom.png b/LanMountainDesktop/Assets/Weather/HyperOS3/hyper_sky_bottom.png
deleted file mode 100644
index 7275992..0000000
Binary files a/LanMountainDesktop/Assets/Weather/HyperOS3/hyper_sky_bottom.png and /dev/null differ
diff --git a/LanMountainDesktop/Assets/Weather/HyperOS3/hyper_sky_front.png b/LanMountainDesktop/Assets/Weather/HyperOS3/hyper_sky_front.png
deleted file mode 100644
index 3497949..0000000
Binary files a/LanMountainDesktop/Assets/Weather/HyperOS3/hyper_sky_front.png and /dev/null differ
diff --git a/LanMountainDesktop/Assets/Weather/HyperOS3/hyper_sky_left.png b/LanMountainDesktop/Assets/Weather/HyperOS3/hyper_sky_left.png
deleted file mode 100644
index 3728f1a..0000000
Binary files a/LanMountainDesktop/Assets/Weather/HyperOS3/hyper_sky_left.png and /dev/null differ
diff --git a/LanMountainDesktop/Assets/Weather/HyperOS3/hyper_sky_right.png b/LanMountainDesktop/Assets/Weather/HyperOS3/hyper_sky_right.png
deleted file mode 100644
index cdc69ed..0000000
Binary files a/LanMountainDesktop/Assets/Weather/HyperOS3/hyper_sky_right.png and /dev/null differ
diff --git a/LanMountainDesktop/Assets/Weather/HyperOS3/hyper_sky_top.png b/LanMountainDesktop/Assets/Weather/HyperOS3/hyper_sky_top.png
deleted file mode 100644
index e9488ae..0000000
Binary files a/LanMountainDesktop/Assets/Weather/HyperOS3/hyper_sky_top.png and /dev/null differ
diff --git a/LanMountainDesktop/Assets/Weather/HyperOS3/hyper_snow_flake.png b/LanMountainDesktop/Assets/Weather/HyperOS3/hyper_snow_flake.png
deleted file mode 100644
index 984abeb..0000000
Binary files a/LanMountainDesktop/Assets/Weather/HyperOS3/hyper_snow_flake.png and /dev/null differ
diff --git a/LanMountainDesktop/Assets/Weather/HyperOS3/hyper_sun_core.png b/LanMountainDesktop/Assets/Weather/HyperOS3/hyper_sun_core.png
deleted file mode 100644
index 8ffaeea..0000000
Binary files a/LanMountainDesktop/Assets/Weather/HyperOS3/hyper_sun_core.png and /dev/null differ
diff --git a/LanMountainDesktop/Assets/Weather/HyperOS3/hyper_sun_ring.png b/LanMountainDesktop/Assets/Weather/HyperOS3/hyper_sun_ring.png
deleted file mode 100644
index b57761e..0000000
Binary files a/LanMountainDesktop/Assets/Weather/HyperOS3/hyper_sun_ring.png and /dev/null differ
diff --git a/LanMountainDesktop/Assets/Weather/clear_day.jpg b/LanMountainDesktop/Assets/Weather/clear_day.jpg
deleted file mode 100644
index 74d496a..0000000
Binary files a/LanMountainDesktop/Assets/Weather/clear_day.jpg and /dev/null differ
diff --git a/LanMountainDesktop/Assets/Weather/clear_night.jpg b/LanMountainDesktop/Assets/Weather/clear_night.jpg
deleted file mode 100644
index 8de0262..0000000
Binary files a/LanMountainDesktop/Assets/Weather/clear_night.jpg and /dev/null differ
diff --git a/LanMountainDesktop/Assets/Weather/clear_sky.jpg b/LanMountainDesktop/Assets/Weather/clear_sky.jpg
deleted file mode 100644
index 74d496a..0000000
Binary files a/LanMountainDesktop/Assets/Weather/clear_sky.jpg and /dev/null differ
diff --git a/LanMountainDesktop/Assets/Weather/cloudy_day.jpg b/LanMountainDesktop/Assets/Weather/cloudy_day.jpg
deleted file mode 100644
index cb29d9d..0000000
Binary files a/LanMountainDesktop/Assets/Weather/cloudy_day.jpg and /dev/null differ
diff --git a/LanMountainDesktop/Assets/Weather/cloudy_night.jpg b/LanMountainDesktop/Assets/Weather/cloudy_night.jpg
deleted file mode 100644
index 57929b8..0000000
Binary files a/LanMountainDesktop/Assets/Weather/cloudy_night.jpg and /dev/null differ
diff --git a/LanMountainDesktop/Assets/Weather/fog_haze.jpg b/LanMountainDesktop/Assets/Weather/fog_haze.jpg
deleted file mode 100644
index 9a0c1ea..0000000
Binary files a/LanMountainDesktop/Assets/Weather/fog_haze.jpg and /dev/null differ
diff --git a/LanMountainDesktop/Assets/Weather/rain.jpg b/LanMountainDesktop/Assets/Weather/rain.jpg
deleted file mode 100644
index e9b2083..0000000
Binary files a/LanMountainDesktop/Assets/Weather/rain.jpg and /dev/null differ
diff --git a/LanMountainDesktop/Assets/Weather/rain_heavy.jpg b/LanMountainDesktop/Assets/Weather/rain_heavy.jpg
deleted file mode 100644
index 6c71493..0000000
Binary files a/LanMountainDesktop/Assets/Weather/rain_heavy.jpg and /dev/null differ
diff --git a/LanMountainDesktop/Assets/Weather/rain_light.jpg b/LanMountainDesktop/Assets/Weather/rain_light.jpg
deleted file mode 100644
index 6d57298..0000000
Binary files a/LanMountainDesktop/Assets/Weather/rain_light.jpg and /dev/null differ
diff --git a/LanMountainDesktop/Assets/Weather/snow.jpg b/LanMountainDesktop/Assets/Weather/snow.jpg
deleted file mode 100644
index 1d70a6b..0000000
Binary files a/LanMountainDesktop/Assets/Weather/snow.jpg and /dev/null differ
diff --git a/LanMountainDesktop/Assets/Weather/snow_soft.jpg b/LanMountainDesktop/Assets/Weather/snow_soft.jpg
deleted file mode 100644
index f48fd4e..0000000
Binary files a/LanMountainDesktop/Assets/Weather/snow_soft.jpg and /dev/null differ
diff --git a/LanMountainDesktop/Assets/Weather/storm.jpg b/LanMountainDesktop/Assets/Weather/storm.jpg
deleted file mode 100644
index a4a65dc..0000000
Binary files a/LanMountainDesktop/Assets/Weather/storm.jpg and /dev/null differ
diff --git a/LanMountainDesktop/Assets/Weather/storm_dark.jpg b/LanMountainDesktop/Assets/Weather/storm_dark.jpg
deleted file mode 100644
index a4a65dc..0000000
Binary files a/LanMountainDesktop/Assets/Weather/storm_dark.jpg and /dev/null differ
diff --git a/LanMountainDesktop/LanMountainDesktop.csproj b/LanMountainDesktop/LanMountainDesktop.csproj
index df2b6b6..3b157ce 100644
--- a/LanMountainDesktop/LanMountainDesktop.csproj
+++ b/LanMountainDesktop/LanMountainDesktop.csproj
@@ -26,6 +26,7 @@
     <EmbeddedResource Include="Localization\*.json" />
     <None Include="Localization\*.json" CopyToOutputDirectory="PreserveNewest" />
     <None Include="Extensions\Components\*.json" CopyToOutputDirectory="PreserveNewest" />
+    <None Include="WindowsIdentity\**" CopyToOutputDirectory="PreserveNewest" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/LanMountainDesktop/Localization/en-US.json b/LanMountainDesktop/Localization/en-US.json
index 3a7fc45..deb72ef 100644
--- a/LanMountainDesktop/Localization/en-US.json
+++ b/LanMountainDesktop/Localization/en-US.json
@@ -352,6 +352,12 @@
     "settings.general.slide_transition_desc":  "Use a slide-in startup transition on supported Windows builds. This option disables fade transition.",
     "settings.general.show_main_window_taskbar_header":  "Show main desktop window in taskbar",
     "settings.general.show_main_window_taskbar_desc":  "Keep the main desktop host window visible in the taskbar. The independent settings window always has its own taskbar entry.",
+    "settings.general.multi_instance_behavior_header":  "When opening the app again",
+    "settings.general.multi_instance_behavior_desc":  "Choose how Launcher handles repeated launches while LanMountain Desktop is already running.",
+    "settings.general.multi_instance_behavior.restart":  "Restart app",
+    "settings.general.multi_instance_behavior.open_silently":  "Open desktop without prompt",
+    "settings.general.multi_instance_behavior.prompt_only":  "Show prompt only",
+    "settings.general.multi_instance_behavior.notify_and_open":  "Notify and open desktop",
     "settings.data.title":  "Data",
     "settings.data.description":  "Review and manage local app storage and cache.",
     "settings.appearance.title":  "Appearance",
@@ -560,9 +566,17 @@
     "settings.update.description":  "Check releases, choose the update channel and download source, and control how updates are installed.",
     "settings.update.status_card_title":  "Update Status",
     "settings.update.status_card_description":  "Check for updates, review release details, and continue with download or installation when a new version is available.",
-    "settings.update.preferences_header":  "Update Preferences",
+    "settings.update.release_facts_title":  "Release Facts",
+    "settings.update.release_facts_description":  "Keep the current version, published release, and update type visible without collapsing the layout while states change.",
+    "settings.update.progress_title":  "Progress",
+    "settings.update.progress_description":  "Watch download, installation, verification, and recovery progress here.",
+    "settings.update.actions_title":  "Actions",
+    "settings.update.actions_description":  "The buttons below stay in place while the update phase changes, so the page does not jump around.",
+    "settings.update.preferences_title":  "Update Preferences",
     "settings.update.preferences_description":  "Choose the release channel, installer download source, installation behavior, and download parallelism.",
     "settings.update.last_checked_label":  "Last Checked",
+    "settings.update.last_checked_none":  "Not checked yet.",
+    "settings.update.last_checked_format":  "Last checked: {0}",
     "settings.update.source_label":  "Download Source",
     "settings.update.source_github":  "GitHub",
     "settings.update.source_ghproxy":  "gh-proxy",
@@ -579,15 +593,146 @@
     "settings.update.channel_preview_desc":  "Preview builds may contain newer features but can be less stable.",
     "settings.update.download_threads_label":  "Download Threads",
     "settings.update.download_threads_desc":  "Set the number of parallel download threads for application update packages.",
-    "settings.update.force_check_label":  "Force Check Update",
-    "settings.update.force_check_desc":  "Force check for updates from GitHub, ignoring version comparison.",
-    "settings.update.status_force_checking":  "Force checking GitHub releases...",
-    "settings.update.status_force_no_asset":  "Release found but no compatible installer available.",
-    "settings.update.status_force_available_format":  "Release {0} is available. Click Download & Install.",
-    "settings.update.install_now_button":  "Install Now",
+    "settings.update.type_label":  "Update Type",
+    "settings.update.status_idle":  "No update check has been performed yet.",
+    "settings.update.status_preferences_saved":  "Update preferences saved.",
+    "settings.update.status_check_failed":  "Failed to check for updates.",
+    "settings.update.status_available_summary_format":  "Update available: {0} (current: {1})",
+    "settings.update.status_up_to_date_format":  "You are up to date ({0}).",
+    "settings.update.status_failed":  "The update failed.",
+    "settings.update.phase_idle":  "Ready",
+    "settings.update.phase_checking":  "Checking",
+    "settings.update.phase_checked":  "Checked",
+    "settings.update.phase_downloading":  "Downloading",
+    "settings.update.phase_paused_download":  "Paused (Download)",
+    "settings.update.phase_downloaded":  "Downloaded",
+    "settings.update.phase_installing":  "Installing",
+    "settings.update.phase_paused_install":  "Paused (Install)",
+    "settings.update.phase_installed":  "Installed",
+    "settings.update.phase_verifying":  "Verifying",
+    "settings.update.phase_completed":  "Completed",
+    "settings.update.phase_failed":  "Failed",
+    "settings.update.phase_recovering":  "Recovering",
+    "settings.update.phase_rolling_back":  "Rolling Back",
+    "settings.update.phase_rolled_back":  "Rolled Back",
+    "settings.update.badge_available":  "Update available",
+    "settings.update.badge_paused":  "Paused",
+    "settings.update.paused_hint":  "Paused. Resume to continue from the current state.",
+    "settings.update.check_button_short":  "Check",
+    "settings.update.download_button_short":  "Download",
+    "settings.update.install_button_short":  "Install",
+    "settings.update.pause_button_short":  "Pause",
+    "settings.update.resume_button_short":  "Resume",
+    "settings.update.rollback_button_short":  "Rollback",
+    "settings.update.cancel_button_short":  "Cancel",
+    "settings.update.progress_download_detail_format":  "{0} ({1}%)",
+    "settings.update.status_resumed":  "Resume complete.",
+    "settings.update.status_resume_failed":  "Resume failed.",
+    "settings.update.status_resume_state_invalid":  "The resume state is invalid. Cancel and redownload, then try again.",
+    "settings.update.status_recovering":  "Recovering installation...",
+    "settings.update.status_installing":  "Installing update...",
+    "settings.update.status_rolling_back":  "Rolling back...",
+    "settings.update.status_canceled":  "Update canceled.",
+    "settings.update.download_progress_idle":  "Download progress: -",
+    "settings.update.download_progress_format":  "Download progress: {0:F0}%",
+    "settings.update.actions_header":  "Update Actions",
+    "settings.update.actions_desc":  "Check releases, download installer, and start update.",
+    "settings.update.check_button":  "Check for Updates",
+    "settings.update.download_install_button":  "Download & Install",
+    "settings.update.status_ready":  "Ready to check for updates.",
+    "settings.update.status_channel_changed":  "Update channel changed. Please check again.",
+    "settings.update.status_channel_changed_format":  "Update channel switched to {0}. Please check again.",
+    "settings.update.status_windows_only":  "Automatic installer update is currently available only on Windows.",
+    "settings.update.status_checking":  "Checking GitHub releases...",
+    "settings.update.status_check_failed_format":  "Update check failed: {0}",
+    "settings.update.status_up_to_date":  "You are already on the latest version.",
+    "settings.update.status_asset_missing":  "A new release is available, but no compatible installer was found.",
+    "settings.update.status_available_format":  "New version {0} is available. Click Download & Install.",
+    "settings.update.status_downloading":  "Downloading installer...",
+    "settings.update.status_downloading_delta":  "Downloading incremental update...",
+    "settings.update.status_delta_applying":  "Applying incremental update. The app will close for update.",
+    "settings.update.status_delta_launch_failed":  "Failed to launch updater for incremental update.",
+    "settings.update.status_download_failed_format":  "Download failed: {0}",
+    "settings.update.status_launching_installer":  "Download complete. Launching installer...",
+    "settings.update.status_installer_missing":  "Installer file was not found after download.",
+    "settings.update.status_installer_started":  "Installer started. The app will close for update.",
+    "settings.update.status_elevation_cancelled":  "Administrator permission was not granted. Update was cancelled.",
+    "settings.update.status_launch_failed_format":  "Failed to start installer: {0}",
+    "settings.update.type_delta":  "Incremental Update",
+    "settings.update.type_full":  "Full Installer",
     "settings.update.status_downloaded_confirm":  "Update downloaded. Review it and choose when to install.",
     "settings.update.status_downloaded_exit":  "Update downloaded. It will be installed when you exit the app.",
-    "settings.about.app_info_header":  "Application Information",
+    "settings.update.description":  "Check releases, choose the update channel and download source, and control how updates are installed.",
+    "settings.update.status_card_title":  "Update Status",
+    "settings.update.status_card_description":  "Check for updates, review release details, and continue with download or installation when a new version is available.",
+    "settings.update.release_facts_title":  "Release Facts",
+    "settings.update.release_facts_description":  "Keep the current version, published release, and update type visible without collapsing the layout while states change.",
+    "settings.update.progress_title":  "Progress",
+    "settings.update.progress_description":  "Watch download, installation, verification, and recovery progress here.",
+    "settings.update.actions_title":  "Actions",
+    "settings.update.actions_description":  "The buttons below stay in place while the update phase changes, so the page does not jump around.",
+    "settings.update.preferences_title":  "Update Preferences",
+    "settings.update.preferences_description":  "Choose the release channel, installer download source, installation behavior, and download parallelism.",
+    "settings.update.last_checked_label":  "Last Checked",
+    "settings.update.last_checked_none":  "Not checked yet.",
+    "settings.update.last_checked_format":  "Last checked: {0}",
+    "settings.update.source_label":  "Download Source",
+    "settings.update.source_github":  "GitHub",
+    "settings.update.source_ghproxy":  "gh-proxy",
+    "settings.update.source_github_desc":  "Download release assets directly from GitHub.",
+    "settings.update.source_ghproxy_desc":  "Use the gh-proxy mirror when downloading GitHub release assets.",
+    "settings.update.mode_label":  "Update Mode",
+    "settings.update.mode_manual":  "Manual Update",
+    "settings.update.mode_download_then_confirm":  "Silent Download",
+    "settings.update.mode_silent_on_exit":  "Silent Install",
+    "settings.update.mode_manual_desc":  "Only check for updates. You decide when downloads and installation happen.",
+    "settings.update.mode_download_then_confirm_desc":  "Download updates in the background and ask for confirmation before installing them.",
+    "settings.update.mode_silent_on_exit_desc":  "Download updates in the background and install them the next time you exit the app.",
+    "settings.update.channel_stable_desc":  "Stable builds prioritize reliability and are recommended for most users.",
+    "settings.update.channel_preview_desc":  "Preview builds may contain newer features but can be less stable.",
+    "settings.update.download_threads_label":  "Download Threads",
+    "settings.update.download_threads_desc":  "Set the number of parallel download threads for application update packages.",
+    "settings.update.type_label":  "Update Type",
+    "settings.update.status_idle":  "No update check has been performed yet.",
+    "settings.update.status_preferences_saved":  "Update preferences saved.",
+    "settings.update.status_check_failed":  "Failed to check for updates.",
+    "settings.update.status_available_summary_format":  "Update available: {0} (current: {1})",
+    "settings.update.status_up_to_date_format":  "You are up to date ({0}).",
+    "settings.update.status_failed":  "The update failed.",
+    "settings.update.phase_idle":  "Ready",
+    "settings.update.phase_checking":  "Checking",
+    "settings.update.phase_checked":  "Checked",
+    "settings.update.phase_downloading":  "Downloading",
+    "settings.update.phase_paused_download":  "Paused (Download)",
+    "settings.update.phase_downloaded":  "Downloaded",
+    "settings.update.phase_installing":  "Installing",
+    "settings.update.phase_paused_install":  "Paused (Install)",
+    "settings.update.phase_installed":  "Installed",
+    "settings.update.phase_verifying":  "Verifying",
+    "settings.update.phase_completed":  "Completed",
+    "settings.update.phase_failed":  "Failed",
+    "settings.update.phase_recovering":  "Recovering",
+    "settings.update.phase_rolling_back":  "Rolling Back",
+    "settings.update.phase_rolled_back":  "Rolled Back",
+    "settings.update.badge_available":  "Update available",
+    "settings.update.badge_paused":  "Paused",
+    "settings.update.paused_hint":  "Paused. Resume to continue from the current state.",
+    "settings.update.check_button_short":  "Check",
+    "settings.update.download_button_short":  "Download",
+    "settings.update.install_button_short":  "Install",
+    "settings.update.pause_button_short":  "Pause",
+    "settings.update.resume_button_short":  "Resume",
+    "settings.update.rollback_button_short":  "Rollback",
+    "settings.update.cancel_button_short":  "Cancel",
+    "settings.update.progress_download_detail_format":  "{0} ({1}%)",
+    "settings.update.status_resumed":  "Resume complete.",
+    "settings.update.status_resume_failed":  "Resume failed.",
+    "settings.update.status_resume_state_invalid":  "The resume state is invalid. Cancel and redownload, then try again.",
+    "settings.update.status_recovering":  "Recovering installation...",
+    "settings.update.status_installing":  "Installing update...",
+    "settings.update.status_rolling_back":  "Rolling back...",
+    "settings.update.status_canceled":  "Update canceled.",
+
     "settings.about.update_header":  "Updates",
     "settings.about.version_label":  "Version",
     "settings.about.codename_label":  "Codename",
diff --git a/LanMountainDesktop/Localization/ja-JP.json b/LanMountainDesktop/Localization/ja-JP.json
index 61315df..f6d54d1 100644
--- a/LanMountainDesktop/Localization/ja-JP.json
+++ b/LanMountainDesktop/Localization/ja-JP.json
@@ -287,6 +287,12 @@
     "settings.general.preview_time_label":  "時刻",
     "settings.general.preview_date_label":  "日付",
     "settings.general.render_mode_restart_message":  "レンダリングモードの変更にはアプリの再起動が必要です。",
+    "settings.general.multi_instance_behavior_header":  "アプリを再度開くときの動作",
+    "settings.general.multi_instance_behavior_desc":  "LanMountain Desktop が既に実行中の場合に、Launcher が再起動操作をどう処理するかを選択します。",
+    "settings.general.multi_instance_behavior.restart":  "アプリを再起動",
+    "settings.general.multi_instance_behavior.open_silently":  "通知せずにデスクトップを開く",
+    "settings.general.multi_instance_behavior.prompt_only":  "プロンプトのみ表示",
+    "settings.general.multi_instance_behavior.notify_and_open":  "通知してデスクトップを開く",
     "settings.data.title":  "データ",
     "settings.data.description":  "ローカルに保存されたアプリデータとキャッシュを確認・管理します。",
     "settings.appearance.title":  "外観",
@@ -473,7 +479,77 @@
     "settings.update.install_now_button":  "今すぐインストール",
     "settings.update.status_downloaded_confirm":  "アップデートがダウンロードされました。確認してインストールのタイミングを選択してください。",
     "settings.update.status_downloaded_exit":  "アップデートがダウンロードされました。アプリの終了時にインストールされます。",
-    "settings.about.app_info_header":  "アプリケーション情報",
+    "settings.update.description":  "リリースを確認し、アップデートチャンネルとダウンロードソースを選択し、アップデートのインストール方法を制御します。",
+    "settings.update.status_card_title":  "アップデートステータス",
+    "settings.update.status_card_description":  "アップデートを確認し、リリースの詳細を確認し、新しいバージョンが利用可能な場合はダウンロードまたはインストールを続行します。",
+    "settings.update.release_facts_title":  "リリース情報",
+    "settings.update.release_facts_description":  "状態が変わっても、現在のバージョン・公開済みリリース・更新タイプを折りたたまずに表示します。",
+    "settings.update.progress_title":  "進行状況",
+    "settings.update.progress_description":  "ダウンロード、インストール、検証、復旧の進行状況をここで確認します。",
+    "settings.update.actions_title":  "操作",
+    "settings.update.actions_description":  "下のボタンは更新フェーズが変わっても位置を固定し、ページが大きく動かないようにします。",
+    "settings.update.preferences_title":  "アップデート設定",
+    "settings.update.preferences_description":  "リリースチャンネル、インストーラーのダウンロード元、インストール方法、ダウンロードの並列度を選択します。",
+    "settings.update.last_checked_label":  "最終確認日時",
+    "settings.update.last_checked_none":  "まだ確認していません。",
+    "settings.update.last_checked_format":  "最終確認: {0}",
+    "settings.update.source_label":  "ダウンロードソース",
+    "settings.update.source_github":  "GitHub",
+    "settings.update.source_ghproxy":  "gh-proxy",
+    "settings.update.source_github_desc":  "GitHubからリリースアセットを直接ダウンロードします。",
+    "settings.update.source_ghproxy_desc":  "GitHubリリースアセットをダウンロードする際にgh-proxyミラーを使用します。",
+    "settings.update.mode_label":  "アップデートモード",
+    "settings.update.mode_manual":  "手動アップデート",
+    "settings.update.mode_download_then_confirm":  "サイレントダウンロード",
+    "settings.update.mode_silent_on_exit":  "サイレントインストール",
+    "settings.update.mode_manual_desc":  "アップデートの確認のみ。ダウンロードとインストールのタイミングを決定します。",
+    "settings.update.mode_download_then_confirm_desc":  "バックグラウンドでアップデートをダウンロードし、インストール前に確認を求めます。",
+    "settings.update.mode_silent_on_exit_desc":  "バックグラウンドでアップデートをダウンロードし、アプリの終了時にインストールします。",
+    "settings.update.channel_stable_desc":  "安定ビルドは信頼性を重視し、ほとんどのユーザーにおすすめです。",
+    "settings.update.channel_preview_desc":  "プレビュービルドは新しい機能が含まれる可能性がありますが、安定性が低い場合があります。",
+    "settings.update.download_threads_label":  "ダウンロードスレッド",
+    "settings.update.download_threads_desc":  "アプリケーションのアップデートパッケージの並列ダウンロードスレッド数を設定します。",
+    "settings.update.type_label":  "更新タイプ",
+    "settings.update.status_idle":  "アップデートの確認はまだ実行されていません。",
+    "settings.update.status_preferences_saved":  "アップデート設定が保存されました。",
+    "settings.update.status_check_failed":  "アップデートの確認に失敗しました。",
+    "settings.update.status_available_summary_format":  "アップデートあり: {0}（現在: {1}）",
+    "settings.update.status_up_to_date_format":  "最新版です（{0}）。",
+    "settings.update.status_failed":  "アップデートに失敗しました。",
+    "settings.update.phase_idle":  "準備完了",
+    "settings.update.phase_checking":  "確認中",
+    "settings.update.phase_checked":  "確認済み",
+    "settings.update.phase_downloading":  "ダウンロード中",
+    "settings.update.phase_paused_download":  "一時停止（ダウンロード）",
+    "settings.update.phase_downloaded":  "ダウンロード済み",
+    "settings.update.phase_installing":  "インストール中",
+    "settings.update.phase_paused_install":  "一時停止（インストール）",
+    "settings.update.phase_installed":  "インストール済み",
+    "settings.update.phase_verifying":  "検証中",
+    "settings.update.phase_completed":  "完了",
+    "settings.update.phase_failed":  "失敗",
+    "settings.update.phase_recovering":  "復旧中",
+    "settings.update.phase_rolling_back":  "ロールバック中",
+    "settings.update.phase_rolled_back":  "ロールバック済み",
+    "settings.update.badge_available":  "アップデートあり",
+    "settings.update.badge_paused":  "一時停止中",
+    "settings.update.paused_hint":  "一時停止中です。再開すると現在の状態から続行します。",
+    "settings.update.check_button_short":  "確認",
+    "settings.update.download_button_short":  "ダウンロード",
+    "settings.update.install_button_short":  "インストール",
+    "settings.update.pause_button_short":  "一時停止",
+    "settings.update.resume_button_short":  "再開",
+    "settings.update.rollback_button_short":  "ロールバック",
+    "settings.update.cancel_button_short":  "キャンセル",
+    "settings.update.progress_download_detail_format":  "{0} ({1}%)",
+    "settings.update.status_resumed":  "再開が完了しました。",
+    "settings.update.status_resume_failed":  "再開に失敗しました。",
+    "settings.update.status_resume_state_invalid":  "再開状態が無効です。キャンセルして再ダウンロードしてから再試行してください。",
+    "settings.update.status_recovering":  "インストールを復旧中…",
+    "settings.update.status_installing":  "アップデートをインストール中…",
+    "settings.update.status_rolling_back":  "ロールバック中…",
+    "settings.update.status_canceled":  "アップデートをキャンセルしました。",
+
     "settings.about.update_header":  "アップデート",
     "settings.about.version_label":  "バージョン",
     "settings.about.codename_label":  "コードネーム",
diff --git a/LanMountainDesktop/Localization/ko-KR.json b/LanMountainDesktop/Localization/ko-KR.json
index 973e734..4d7dd02 100644
--- a/LanMountainDesktop/Localization/ko-KR.json
+++ b/LanMountainDesktop/Localization/ko-KR.json
@@ -335,6 +335,12 @@
     "settings.general.preview_time_label":  "시간",
     "settings.general.preview_date_label":  "날짜",
     "settings.general.render_mode_restart_message":  "렌더링 모드 변경은 앱 재시작이 필요합니다.",
+    "settings.general.multi_instance_behavior_header":  "앱을 다시 열 때 동작",
+    "settings.general.multi_instance_behavior_desc":  "LanMountain Desktop이 이미 실행 중일 때 Launcher가 반복 실행을 처리하는 방식을 선택합니다.",
+    "settings.general.multi_instance_behavior.restart":  "앱 다시 시작",
+    "settings.general.multi_instance_behavior.open_silently":  "알림 없이 데스크톱 열기",
+    "settings.general.multi_instance_behavior.prompt_only":  "프롬프트만 표시",
+    "settings.general.multi_instance_behavior.notify_and_open":  "알림 후 데스크톱 열기",
     "settings.data.title":  "데이터",
     "settings.data.description":  "로컬에 저장된 앱 데이터와 캐시를 확인하고 관리합니다.",
     "settings.appearance.title":  "외관",
@@ -521,7 +527,77 @@
     "settings.update.install_now_button":  "지금 설치",
     "settings.update.status_downloaded_confirm":  "업데이트가 다운로드되었습니다. 확인 후 설치 시기를 선택하세요.",
     "settings.update.status_downloaded_exit":  "업데이트가 다운로드되었습니다. 앱 종료 시 설치됩니다.",
-    "settings.about.app_info_header":  "앱 정보",
+    "settings.update.description":  "업데이트 확인, 릴리스 채널 및 다운로드 소스 선택, 업데이트 설치 방법 제어.",
+    "settings.update.status_card_title":  "업데이트 상태",
+    "settings.update.status_card_description":  "새 버전 확인, 릴리스 정보 보기, 업데이트 시 다운로드 또는 설치 계속.",
+    "settings.update.release_facts_title":  "릴리스 정보",
+    "settings.update.release_facts_description":  "상태가 바뀌어도 현재 버전, 게시된 릴리스, 업데이트 유형이 접히지 않게 유지합니다.",
+    "settings.update.progress_title":  "진행률",
+    "settings.update.progress_description":  "여기서 다운로드, 설치, 검증, 복구 진행률을 확인하세요.",
+    "settings.update.actions_title":  "작업",
+    "settings.update.actions_description":  "아래 버튼은 업데이트 단계가 바뀌어도 고정되어 페이지가 크게 흔들리지 않습니다.",
+    "settings.update.preferences_title":  "업데이트 설정",
+    "settings.update.preferences_description":  "릴리스 채널, 설치 패키지 다운로드 소스, 설치 방식, 다운로드 병렬 처리 수를 선택합니다.",
+    "settings.update.last_checked_label":  "마지막 확인",
+    "settings.update.last_checked_none":  "아직 확인하지 않았습니다.",
+    "settings.update.last_checked_format":  "마지막 확인: {0}",
+    "settings.update.source_label":  "다운로드 소스",
+    "settings.update.source_github":  "GitHub",
+    "settings.update.source_ghproxy":  "gh-proxy",
+    "settings.update.source_github_desc":  "GitHub에서 직접 릴리스 설치 패키지를 다운로드합니다.",
+    "settings.update.source_ghproxy_desc":  "GitHub 릴리스 설치 패키지를 다운로드할 때 gh-proxy 미러를 사용합니다.",
+    "settings.update.mode_label":  "업데이트 모드",
+    "settings.update.mode_manual":  "수동 업데이트",
+    "settings.update.mode_download_then_confirm":  "자동 다운로드",
+    "settings.update.mode_silent_on_exit":  "자동 설치",
+    "settings.update.mode_manual_desc":  "업데이트만 확인합니다. 다운로드와 설치 시기는 사용자가 결정합니다.",
+    "settings.update.mode_download_then_confirm_desc":  "백그라운드에서 업데이트를 다운로드하고 완료 후 설치 여부를 확인합니다.",
+    "settings.update.mode_silent_on_exit_desc":  "백그라운드에서 업데이트를 다운로드하고 다음 앱 종료 시 자동으로 설치합니다.",
+    "settings.update.channel_stable_desc":  "정식 버전은 안정성을 우선하며 대부분의 사용자에게 적합합니다.",
+    "settings.update.channel_preview_desc":  "미리보기 버전은 더 빠른 새 기능을 포함할 수 있지만 안정성이 낮을 수 있습니다.",
+    "settings.update.download_threads_label":  "다운로드 스레드 수",
+    "settings.update.download_threads_desc":  "앱 업데이트 설치 패키지에 사용할 병렬 다운로드 스레드 수를 설정합니다.",
+    "settings.update.type_label":  "업데이트 유형",
+    "settings.update.status_idle":  "아직 업데이트 확인이 수행되지 않았습니다.",
+    "settings.update.status_preferences_saved":  "업데이트 설정이 저장되었습니다.",
+    "settings.update.status_check_failed":  "업데이트 확인 실패.",
+    "settings.update.status_available_summary_format":  "업데이트 발견: {0} (현재: {1}).",
+    "settings.update.status_up_to_date_format":  "현재 최신 버전입니다 ({0}).",
+    "settings.update.status_failed":  "업데이트에 실패했습니다.",
+    "settings.update.phase_idle":  "준비됨",
+    "settings.update.phase_checking":  "확인 중",
+    "settings.update.phase_checked":  "확인됨",
+    "settings.update.phase_downloading":  "다운로드 중",
+    "settings.update.phase_paused_download":  "일시 중지(다운로드)",
+    "settings.update.phase_downloaded":  "다운로드 완료",
+    "settings.update.phase_installing":  "설치 중",
+    "settings.update.phase_paused_install":  "일시 중지(설치)",
+    "settings.update.phase_installed":  "설치됨",
+    "settings.update.phase_verifying":  "검증 중",
+    "settings.update.phase_completed":  "완료됨",
+    "settings.update.phase_failed":  "실패",
+    "settings.update.phase_recovering":  "복구 중",
+    "settings.update.phase_rolling_back":  "되돌리는 중",
+    "settings.update.phase_rolled_back":  "되돌림 완료",
+    "settings.update.badge_available":  "업데이트 उपलब्ध",
+    "settings.update.badge_paused":  "일시 중지됨",
+    "settings.update.paused_hint":  "일시 중지되었습니다. 다시 시작하면 현재 상태에서 계속합니다.",
+    "settings.update.check_button_short":  "확인",
+    "settings.update.download_button_short":  "다운로드",
+    "settings.update.install_button_short":  "설치",
+    "settings.update.pause_button_short":  "일시 중지",
+    "settings.update.resume_button_short":  "재개",
+    "settings.update.rollback_button_short":  "되돌리기",
+    "settings.update.cancel_button_short":  "취소",
+    "settings.update.progress_download_detail_format":  "{0} ({1}%)",
+    "settings.update.status_resumed":  "재개가 완료되었습니다.",
+    "settings.update.status_resume_failed":  "재개 실패.",
+    "settings.update.status_resume_state_invalid":  "재개 상태가 올바르지 않습니다. 취소 후 다시 다운로드하여 시도하세요.",
+    "settings.update.status_recovering":  "설치 복구 중…",
+    "settings.update.status_installing":  "업데이트 설치 중…",
+    "settings.update.status_rolling_back":  "되돌리는 중…",
+    "settings.update.status_canceled":  "업데이트가 취소되었습니다.",
+
     "settings.about.update_header":  "업데이트",
     "settings.about.version_label":  "버전",
     "settings.about.codename_label":  "버전 코드명",
diff --git a/LanMountainDesktop/Localization/zh-CN.json b/LanMountainDesktop/Localization/zh-CN.json
index 6619882..281b1f1 100644
--- a/LanMountainDesktop/Localization/zh-CN.json
+++ b/LanMountainDesktop/Localization/zh-CN.json
@@ -352,6 +352,12 @@
     "settings.general.slide_transition_desc":  "在受支持的 Windows 版本上使用滑入启动过渡。启用后会关闭淡入淡出过渡。",
     "settings.general.show_main_window_taskbar_header":  "在任务栏显示主桌面窗口",
     "settings.general.show_main_window_taskbar_desc":  "让主桌面宿主窗口保持在任务栏中可见。独立设置窗口始终拥有自己的任务栏入口。",
+    "settings.general.multi_instance_behavior_header":  "多次开启时的行为",
+    "settings.general.multi_instance_behavior_desc":  "选择应用已经运行时，启动器如何处理再次打开。",
+    "settings.general.multi_instance_behavior.restart":  "重新启动应用",
+    "settings.general.multi_instance_behavior.open_silently":  "不弹窗直接打开桌面",
+    "settings.general.multi_instance_behavior.prompt_only":  "弹窗但不打开桌面",
+    "settings.general.multi_instance_behavior.notify_and_open":  "弹出通知并打开桌面",
     "settings.data.title":  "数据",
     "settings.data.description":  "查看与管理本机存储中的应用数据与缓存。",
     "settings.appearance.title":  "外观",
@@ -587,7 +593,77 @@
     "settings.update.install_now_button":  "立即安装",
     "settings.update.status_downloaded_confirm":  "更新已下载完成，请查看并选择安装时机。",
     "settings.update.status_downloaded_exit":  "更新已下载完成，将在你退出应用时安装。",
-    "settings.about.app_info_header":  "应用信息",
+    "settings.update.description":  "检查更新、选择发布通道与安装方式，并控制更新行为。",
+    "settings.update.status_card_title":  "更新状态",
+    "settings.update.status_card_description":  "检查新版本、查看发布信息，并在有更新时继续下载或安装。",
+    "settings.update.release_facts_title":  "发布信息",
+    "settings.update.release_facts_description":  "在状态变化时保持当前版本、已发布版本和更新类型可见，不让布局折叠。",
+    "settings.update.progress_title":  "进度",
+    "settings.update.progress_description":  "在这里查看下载、安装、校验和恢复进度。",
+    "settings.update.actions_title":  "操作",
+    "settings.update.actions_description":  "下面的按钮会在更新阶段变化时保持固定，页面不会来回跳动。",
+    "settings.update.preferences_title":  "更新偏好",
+    "settings.update.preferences_description":  "选择发布通道、安装包下载源、安装行为和下载并行度。",
+    "settings.update.last_checked_label":  "上次检查",
+    "settings.update.last_checked_none":  "尚未检查。",
+    "settings.update.last_checked_format":  "上次检查：{0}",
+    "settings.update.source_label":  "下载源",
+    "settings.update.source_github":  "GitHub",
+    "settings.update.source_ghproxy":  "gh-proxy",
+    "settings.update.source_github_desc":  "直接从 GitHub 下载发布安装包。",
+    "settings.update.source_ghproxy_desc":  "下载 GitHub 发布安装包时使用 gh-proxy 镜像。",
+    "settings.update.mode_label":  "更新模式",
+    "settings.update.mode_manual":  "手动更新",
+    "settings.update.mode_download_then_confirm":  "静默下载",
+    "settings.update.mode_silent_on_exit":  "静默安装",
+    "settings.update.mode_manual_desc":  "仅检查更新，何时下载和安装都由你决定。",
+    "settings.update.mode_download_then_confirm_desc":  "后台下载更新，下载完成后由你确认是否安装。",
+    "settings.update.mode_silent_on_exit_desc":  "后台下载更新，并在你下次退出应用时静默安装。",
+    "settings.update.channel_stable_desc":  "正式版以稳定性优先，适合大多数用户。",
+    "settings.update.channel_preview_desc":  "预览版可能包含更早的新功能，但稳定性可能较低。",
+    "settings.update.download_threads_label":  "下载线程数",
+    "settings.update.download_threads_desc":  "设置应用更新安装包使用的并行下载线程数。",
+    "settings.update.type_label":  "更新类型",
+    "settings.update.status_idle":  "尚未执行更新检查。",
+    "settings.update.status_preferences_saved":  "更新偏好已保存。",
+    "settings.update.status_check_failed":  "检查更新失败。",
+    "settings.update.status_available_summary_format":  "发现更新：{0}（当前：{1}）",
+    "settings.update.status_up_to_date_format":  "当前已是最新版本（{0}）。",
+    "settings.update.status_failed":  "更新失败。",
+    "settings.update.phase_idle":  "就绪",
+    "settings.update.phase_checking":  "检查中",
+    "settings.update.phase_checked":  "已检查",
+    "settings.update.phase_downloading":  "下载中",
+    "settings.update.phase_paused_download":  "已暂停（下载）",
+    "settings.update.phase_downloaded":  "已下载",
+    "settings.update.phase_installing":  "安装中",
+    "settings.update.phase_paused_install":  "已暂停（安装）",
+    "settings.update.phase_installed":  "已安装",
+    "settings.update.phase_verifying":  "校验中",
+    "settings.update.phase_completed":  "已完成",
+    "settings.update.phase_failed":  "失败",
+    "settings.update.phase_recovering":  "恢复中",
+    "settings.update.phase_rolling_back":  "回滚中",
+    "settings.update.phase_rolled_back":  "已回滚",
+    "settings.update.badge_available":  "发现更新",
+    "settings.update.badge_paused":  "已暂停",
+    "settings.update.paused_hint":  "已暂停，继续即可从当前状态恢复。",
+    "settings.update.check_button_short":  "检查",
+    "settings.update.download_button_short":  "下载",
+    "settings.update.install_button_short":  "安装",
+    "settings.update.pause_button_short":  "暂停",
+    "settings.update.resume_button_short":  "继续",
+    "settings.update.rollback_button_short":  "回滚",
+    "settings.update.cancel_button_short":  "取消",
+    "settings.update.progress_download_detail_format":  "{0}（{1}%）",
+    "settings.update.status_resumed":  "继续完成。",
+    "settings.update.status_resume_failed":  "继续失败。",
+    "settings.update.status_resume_state_invalid":  "恢复状态无效。请取消后重新下载再试。",
+    "settings.update.status_recovering":  "正在恢复安装…",
+    "settings.update.status_installing":  "正在安装更新…",
+    "settings.update.status_rolling_back":  "正在回滚…",
+    "settings.update.status_canceled":  "更新已取消。",
+
     "settings.about.update_header":  "更新",
     "settings.about.version_label":  "版本",
     "settings.about.codename_label":  "版本代号",
diff --git a/LanMountainDesktop/Models/AppSettingsSnapshot.cs b/LanMountainDesktop/Models/AppSettingsSnapshot.cs
index 026929e..b283337 100644
--- a/LanMountainDesktop/Models/AppSettingsSnapshot.cs
+++ b/LanMountainDesktop/Models/AppSettingsSnapshot.cs
@@ -1,5 +1,7 @@
 using System.Collections.Generic;
+using System.Text.Json.Serialization;
 using LanMountainDesktop.Settings.Core;
+using LanMountainDesktop.Shared.Contracts.Launcher;
 
 namespace LanMountainDesktop.Models;
 
@@ -166,6 +168,10 @@ public sealed class AppSettingsSnapshot
 
     public bool ShowInTaskbar { get; set; } = false;
 
+    [JsonConverter(typeof(JsonStringEnumConverter<MultiInstanceLaunchBehavior>))]
+    public MultiInstanceLaunchBehavior MultiInstanceLaunchBehavior { get; set; } =
+        MultiInstanceLaunchBehavior.NotifyAndOpenDesktop;
+
     public bool EnableFusedDesktop { get; set; } = false;
 
     public List<string> DisabledPluginIds { get; set; } = [];
@@ -222,33 +228,38 @@ public sealed class AppSettingsSnapshot
 
     #endregion
 
-    #region Notification Box Settings (消息盒子全局设置)
+    #region Notification Box Settings
 
     /// <summary>
-    /// 启用消息盒子功能（Windows通知监听）
+    /// Enables the system notification inbox component.
     /// </summary>
     public bool NotificationBoxEnabled { get; set; } = true;
 
     /// <summary>
-    /// 隐私模式：开启后只显示"您有新的通知"，不显示具体内容
+    /// Hides notification details when unread messages are present.
     /// </summary>
     public bool NotificationBoxPrivacyMode { get; set; } = false;
 
     /// <summary>
-    /// 被屏蔽的应用列表（不接收这些应用的通知）
+    /// App IDs that should not be collected by the notification box.
     /// </summary>
     public List<string> NotificationBoxBlockedApps { get; set; } = [];
 
     /// <summary>
-    /// 历史记录保留天数
+    /// Number of days to retain notification box history.
     /// </summary>
     public int NotificationBoxHistoryRetentionDays { get; set; } = 7;
 
     /// <summary>
-    /// 最大存储通知数量（防止内存无限增长）
+    /// Maximum number of notifications kept in memory.
     /// </summary>
     public int NotificationBoxMaxStoredCount { get; set; } = 500;
 
+    /// <summary>
+    /// Linux capture mode: ProxyDaemon or PassiveMonitor.
+    /// </summary>
+    public string NotificationBoxLinuxCaptureMode { get; set; } = "ProxyDaemon";
+
     #endregion
 
     public AppSettingsSnapshot Clone()
diff --git a/LanMountainDesktop/Models/ComponentSettingsSnapshot.cs b/LanMountainDesktop/Models/ComponentSettingsSnapshot.cs
index 7388e65..cb344ad 100644
--- a/LanMountainDesktop/Models/ComponentSettingsSnapshot.cs
+++ b/LanMountainDesktop/Models/ComponentSettingsSnapshot.cs
@@ -84,40 +84,40 @@ public sealed class ComponentSettingsSnapshot
 
     public int ZhiJiaoHubCurrentImageIndex { get; set; } = 0;
 
-    #region Notification Box Component Settings (消息盒子组件设置)
+    #region Notification Box Component Settings
 
     /// <summary>
-    /// 组件内最大显示通知数量
+    /// Maximum number of notifications displayed by this component.
     /// </summary>
     public int NotificationBoxMaxDisplayCount { get; set; } = 50;
 
     /// <summary>
-    /// 排序方式：TimeDesc(时间倒序), TimeAsc(时间正序), AppGroup(按应用分组)
+    /// Sort order: TimeDesc, TimeAsc, AppGroup.
     /// </summary>
     public string NotificationBoxSortOrder { get; set; } = "TimeDesc";
 
     /// <summary>
-    /// 是否显示应用图标
+    /// Whether to show app icons.
     /// </summary>
     public bool NotificationBoxShowAppIcon { get; set; } = true;
 
     /// <summary>
-    /// 是否显示时间戳
+    /// Whether to show timestamps.
     /// </summary>
     public bool NotificationBoxShowTimestamp { get; set; } = true;
 
     /// <summary>
-    /// 时间格式：Relative(相对时间，如"5分钟前"), Absolute(绝对时间)
+    /// Time format: Relative or Absolute.
     /// </summary>
     public string NotificationBoxTimeFormat { get; set; } = "Relative";
 
     /// <summary>
-    /// 是否按应用分组显示
+    /// Whether to group notifications by app.
     /// </summary>
     public bool NotificationBoxGroupByApp { get; set; } = false;
 
     /// <summary>
-    /// 是否显示清除按钮
+    /// Whether to show the clear button.
     /// </summary>
     public bool NotificationBoxShowClearButton { get; set; } = true;
 
diff --git a/LanMountainDesktop/Models/NotificationItem.cs b/LanMountainDesktop/Models/NotificationItem.cs
index 119b067..cee4761 100644
--- a/LanMountainDesktop/Models/NotificationItem.cs
+++ b/LanMountainDesktop/Models/NotificationItem.cs
@@ -3,52 +3,43 @@ using System;
 namespace LanMountainDesktop.Models;
 
 /// <summary>
-/// 通知项数据模型
+/// Notification captured by the desktop notification box.
 /// </summary>
 public sealed class NotificationItem
 {
-    /// <summary>
-    /// 唯一标识
-    /// </summary>
     public string Id { get; set; } = Guid.NewGuid().ToString();
 
-    /// <summary>
-    /// 应用ID（如 WeChat, Outlook 等）
-    /// </summary>
     public string AppId { get; set; } = string.Empty;
 
-    /// <summary>
-    /// 应用名称
-    /// </summary>
     public string AppName { get; set; } = string.Empty;
 
-    /// <summary>
-    /// 应用图标路径或Base64
-    /// </summary>
     public string? AppIconPath { get; set; }
 
-    /// <summary>
-    /// 通知标题
-    /// </summary>
+    public byte[]? AppIconBytes { get; set; }
+
     public string Title { get; set; } = string.Empty;
 
-    /// <summary>
-    /// 通知内容
-    /// </summary>
     public string Content { get; set; } = string.Empty;
 
-    /// <summary>
-    /// 接收时间
-    /// </summary>
     public DateTime ReceivedTime { get; set; } = DateTime.Now;
 
-    /// <summary>
-    /// 是否已读
-    /// </summary>
-    public bool IsRead { get; set; } = false;
+    public DateTimeOffset ReceivedAtUtc { get; set; } = DateTimeOffset.UtcNow;
+
+    public bool IsRead { get; set; }
 
-    /// <summary>
-    /// 原始通知的额外数据（用于点击跳转）
-    /// </summary>
     public string? LaunchArgs { get; set; }
+
+    public string Platform { get; set; } = "Unknown";
+
+    public string? SourceNotificationId { get; set; }
+
+    public string? DesktopEntryId { get; set; }
+
+    public string? Aumid { get; set; }
+
+    public string? LaunchTarget { get; set; }
+
+    public bool CanActivate { get; set; }
+
+    public string CaptureMode { get; set; } = "Unknown";
 }
diff --git a/LanMountainDesktop/Program.cs b/LanMountainDesktop/Program.cs
index f911de9..316c9c0 100644
--- a/LanMountainDesktop/Program.cs
+++ b/LanMountainDesktop/Program.cs
@@ -1,15 +1,11 @@
 using System;
-using System.Diagnostics;
-using System.Threading;
 using System.Threading.Tasks;
 using Avalonia;
 using LanMountainDesktop.DesktopHost;
 using LanMountainDesktop.Models;
 using LanMountainDesktop.Plugins;
 using LanMountainDesktop.Services;
-using LanMountainDesktop.Services.Launcher;
 using LanMountainDesktop.Services.Settings;
-using LanMountainDesktop.Shared.Contracts.Launcher;
 
 namespace LanMountainDesktop;
 
@@ -24,43 +20,6 @@ public sealed class Program
         AppDataPathProvider.Initialize(args);
         DevPluginOptions.Parse(args);
         RegisterGlobalExceptionLogging();
-        var restartParentProcessId = LauncherRuntimeMetadata.GetRestartParentProcessId(args);
-
-        using var singleInstance = AcquireSingleInstance(restartParentProcessId);
-        if (!singleInstance.IsPrimaryInstance)
-        {
-            if (restartParentProcessId is not null)
-            {
-                AppLogger.Warn(
-                    "Startup",
-                    $"Restart relaunch could not acquire the single-instance lock. pid={restartParentProcessId.Value}. Suppressing multi-open activation prompt.");
-                ReportLauncherStageBeforeExit(StartupStage.ActivationFailed, "Restart relaunch could not acquire the single-instance lock.");
-                Environment.ExitCode = HostExitCodes.RestartLockNotAcquired;
-                return;
-            }
-
-            var activationAcknowledged = singleInstance.TryNotifyPrimaryInstance(TimeSpan.FromSeconds(2), out var failureReason);
-            if (activationAcknowledged)
-            {
-                AppLogger.Info(
-                    "Startup",
-                    $"Secondary launch forwarded to primary instance successfully. Acked={activationAcknowledged}; Pid={Environment.ProcessId}.");
-                ReportLauncherStageBeforeExit(StartupStage.ActivationRedirected, "Secondary launch forwarded to the primary instance.");
-                Environment.ExitCode = HostExitCodes.SecondaryActivationSucceeded;
-            }
-            else
-            {
-                AppLogger.Warn(
-                    "Startup",
-                    $"Secondary launch failed to activate the primary instance. Acked={activationAcknowledged}; Reason='{failureReason ?? "unknown"}'; Pid={Environment.ProcessId}.");
-                ReportLauncherStageBeforeExit(
-                    StartupStage.ActivationFailed,
-                    $"Secondary launch failed to activate the primary instance. Reason='{failureReason ?? "unknown"}'.");
-                Environment.ExitCode = HostExitCodes.SecondaryActivationFailed;
-            }
-
-            return;
-        }
 
         DesktopBootstrap.InitializeStartupServices(
             InitializeTelemetryIdentity,
@@ -76,17 +35,6 @@ public sealed class Program
             var renderMode = LoadConfiguredRenderMode();
             StartupRenderMode = renderMode;
             AppLogger.Info("Startup", $"Resolved render mode '{renderMode}'.");
-            App.CurrentSingleInstanceService = singleInstance;
-            singleInstance.StartActivationListener(() =>
-            {
-                if (Avalonia.Application.Current is App app)
-                {
-                    app.ActivateMainWindow();
-                    return;
-                }
-
-                AppLogger.Info("SingleInstance", "Activation acknowledged before Avalonia App was ready.");
-            });
             LoadChromePatchState();
             InstallChromePatchersIfNeeded();
             BuildAvaloniaApp(renderMode).StartWithClassicDesktopLifetime(args);
@@ -97,10 +45,6 @@ public sealed class Program
             AppLogger.Critical("Startup", "Application terminated during startup.", ex);
             throw;
         }
-        finally
-        {
-            App.CurrentSingleInstanceService = null;
-        }
     }
 
     public static AppBuilder BuildAvaloniaApp()
@@ -149,41 +93,6 @@ public sealed class Program
         });
     }
 
-    private static SingleInstanceService AcquireSingleInstance(int? restartParentProcessId)
-    {
-        var singleInstance = SingleInstanceService.CreateDefault();
-        if (singleInstance.IsPrimaryInstance || restartParentProcessId is null)
-        {
-            return singleInstance;
-        }
-
-        AppLogger.Info(
-            "Startup",
-            $"Restart relaunch detected. Waiting for previous instance pid={restartParentProcessId.Value} to exit before re-acquiring the single-instance lock.");
-        singleInstance.Dispose();
-
-        var deadline = DateTime.UtcNow + TimeSpan.FromSeconds(12);
-        WaitForRestartParentExit(restartParentProcessId.Value, deadline);
-
-        while (DateTime.UtcNow < deadline)
-        {
-            var retryInstance = SingleInstanceService.CreateDefault();
-            if (retryInstance.IsPrimaryInstance)
-            {
-                AppLogger.Info("Startup", "Restart relaunch acquired the single-instance lock.");
-                return retryInstance;
-            }
-
-            retryInstance.Dispose();
-            Thread.Sleep(150);
-        }
-
-        AppLogger.Warn(
-            "Startup",
-            $"Restart relaunch timed out while waiting for the single-instance lock. pid={restartParentProcessId.Value}.");
-        return SingleInstanceService.CreateDefault();
-    }
-
     private static string LoadConfiguredRenderMode()
     {
         try
@@ -243,26 +152,6 @@ public sealed class Program
         }
     }
 
-    private static void WaitForRestartParentExit(int processId, DateTime deadlineUtc)
-    {
-        try
-        {
-            using var process = Process.GetProcessById(processId);
-            var remaining = deadlineUtc - DateTime.UtcNow;
-            if (remaining > TimeSpan.Zero)
-            {
-                process.WaitForExit((int)Math.Ceiling(remaining.TotalMilliseconds));
-            }
-        }
-        catch (ArgumentException)
-        {
-        }
-        catch (Exception ex)
-        {
-            AppLogger.Warn("Startup", $"Failed while waiting for restart parent pid={processId} to exit.", ex);
-        }
-    }
-
     private static void RegisterGlobalExceptionLogging()
     {
         AppDomain.CurrentDomain.UnhandledException += (_, eventArgs) =>
@@ -307,35 +196,6 @@ public sealed class Program
         };
     }
 
-    private static void ReportLauncherStageBeforeExit(StartupStage stage, string message)
-    {
-        if (!LauncherIpcClient.IsLaunchedByLauncher())
-        {
-            return;
-        }
-
-        try
-        {
-            using var launcherIpcClient = new LauncherIpcClient();
-            var connected = launcherIpcClient.ConnectAsync().GetAwaiter().GetResult();
-            if (!connected)
-            {
-                return;
-            }
-
-            launcherIpcClient.ReportProgressAsync(new StartupProgressMessage
-            {
-                Stage = stage,
-                ProgressPercent = 100,
-                Message = message
-            }).GetAwaiter().GetResult();
-        }
-        catch (Exception ex)
-        {
-            AppLogger.Warn("LauncherIpc", $"Failed to report early launcher stage '{stage}'.", ex);
-        }
-    }
-
     private static void InitializeTelemetryIdentity()
     {
         try
diff --git a/LanMountainDesktop/Services/Launcher/LauncherIpcClient.cs b/LanMountainDesktop/Services/Launcher/LauncherIpcClient.cs
deleted file mode 100644
index e1fa740..0000000
--- a/LanMountainDesktop/Services/Launcher/LauncherIpcClient.cs
+++ /dev/null
@@ -1,146 +0,0 @@
-using System.Buffers;
-using System.Diagnostics;
-using System.IO.Pipes;
-using System.Text.Json;
-using LanMountainDesktop.Shared.Contracts.Launcher;
-
-namespace LanMountainDesktop.Services.Launcher;
-
-/// <summary>
-/// Launcher IPC 客户端，用于向 Launcher 报告启动进度。
-/// </summary>
-public class LauncherIpcClient : IDisposable
-{
-    private static readonly JsonSerializerOptions StartupProgressJsonOptions = new()
-    {
-        PropertyNamingPolicy = JsonNamingPolicy.CamelCase
-    };
-
-    private const int LengthPrefixSize = 4;
-    private const int ConnectTimeoutMs = 5000;
-    private const int ConnectRetryCount = 3;
-    private const int ConnectRetryBaseDelayMs = 300;
-
-    private NamedPipeClientStream? _pipeClient;
-    private bool _isConnected;
-    private readonly object _writeLock = new();
-
-    public bool IsConnected => _isConnected && _pipeClient?.IsConnected == true;
-
-    public async Task<bool> ConnectAsync(CancellationToken cancellationToken = default)
-    {
-        for (var attempt = 1; attempt <= ConnectRetryCount; attempt++)
-        {
-            try
-            {
-                var client = new NamedPipeClientStream(
-                    ".",
-                    LauncherIpcConstants.PipeName,
-                    PipeDirection.Out,
-                    PipeOptions.Asynchronous);
-
-                await client.ConnectAsync(ConnectTimeoutMs, cancellationToken);
-                _pipeClient = client;
-                _isConnected = true;
-                return true;
-            }
-            catch (TimeoutException)
-            {
-                _pipeClient?.Dispose();
-                _pipeClient = null;
-
-                if (attempt < ConnectRetryCount)
-                {
-                    var delay = ConnectRetryBaseDelayMs * attempt + Random.Shared.Next(0, 100);
-                    try
-                    {
-                        await Task.Delay(delay, cancellationToken);
-                    }
-                    catch (OperationCanceledException)
-                    {
-                        return false;
-                    }
-                }
-            }
-            catch (OperationCanceledException)
-            {
-                return false;
-            }
-            catch (Exception ex)
-            {
-                _pipeClient?.Dispose();
-                _pipeClient = null;
-
-                if (attempt < ConnectRetryCount)
-                {
-                    AppLogger.Warn("LauncherIpc", $"Connect attempt {attempt} failed: {ex.Message}, retrying...");
-                    var delay = ConnectRetryBaseDelayMs * attempt + Random.Shared.Next(0, 100);
-                    try
-                    {
-                        await Task.Delay(delay, cancellationToken);
-                    }
-                    catch (OperationCanceledException)
-                    {
-                        return false;
-                    }
-                }
-                else
-                {
-                    AppLogger.Warn("LauncherIpc", $"Failed to connect to Launcher IPC after {ConnectRetryCount} attempts: {ex.Message}");
-                }
-            }
-        }
-
-        return false;
-    }
-
-    public async Task ReportProgressAsync(StartupProgressMessage message)
-    {
-        if (!_isConnected || _pipeClient?.IsConnected != true)
-        {
-            return;
-        }
-
-        try
-        {
-            var json = JsonSerializer.Serialize(message, StartupProgressJsonOptions);
-            var payload = System.Text.Encoding.UTF8.GetBytes(json);
-            var lengthPrefix = BitConverter.GetBytes(payload.Length);
-            Debug.Assert(lengthPrefix.Length == LengthPrefixSize);
-
-            var buffer = ArrayPool<byte>.Shared.Rent(LengthPrefixSize + payload.Length);
-            try
-            {
-                Buffer.BlockCopy(lengthPrefix, 0, buffer, 0, LengthPrefixSize);
-                Buffer.BlockCopy(payload, 0, buffer, LengthPrefixSize, payload.Length);
-
-                await _pipeClient.WriteAsync(buffer.AsMemory(0, LengthPrefixSize + payload.Length)).ConfigureAwait(false);
-                await _pipeClient.FlushAsync().ConfigureAwait(false);
-            }
-            finally
-            {
-                ArrayPool<byte>.Shared.Return(buffer);
-            }
-        }
-        catch (IOException)
-        {
-            _isConnected = false;
-        }
-        catch (Exception ex)
-        {
-            AppLogger.Warn("LauncherIpc", $"Failed to report progress: {ex.Message}");
-            _isConnected = false;
-        }
-    }
-
-    public static bool IsLaunchedByLauncher()
-    {
-        return LauncherRuntimeMetadata.GetLauncherProcessId(Environment.GetCommandLineArgs()) is not null;
-    }
-
-    public void Dispose()
-    {
-        _isConnected = false;
-        _pipeClient?.Dispose();
-    }
-}
diff --git a/LanMountainDesktop/Services/LinuxNotificationListener.cs b/LanMountainDesktop/Services/LinuxNotificationListener.cs
index 4c298b0..97e129a 100644
--- a/LanMountainDesktop/Services/LinuxNotificationListener.cs
+++ b/LanMountainDesktop/Services/LinuxNotificationListener.cs
@@ -1,131 +1,214 @@
 using System;
+using System.Collections.Generic;
+using System.Diagnostics;
 using System.IO;
 using System.Linq;
 using System.Runtime.Versioning;
+using System.Text.RegularExpressions;
 using System.Threading;
 using System.Threading.Tasks;
 using LanMountainDesktop.Models;
 
 namespace LanMountainDesktop.Services;
 
-/// <summary>
-/// Linux平台通知监听器 - 通过DBus监听org.freedesktop.Notifications
-/// </summary>
 [SupportedOSPlatform("linux")]
-internal sealed class LinuxNotificationListener : IDisposable
+internal sealed class LinuxNotificationListener : IPlatformNotificationListener
 {
-    private readonly NotificationListenerService _parent;
-    private CancellationTokenSource? _cts;
-    private bool _isRunning;
+    private static readonly Regex DbusStringRegex = new("^\\s*string\\s+\"(?<value>.*)\"\\s*$", RegexOptions.Compiled);
+    private static readonly Regex DbusUIntRegex = new("^\\s*uint32\\s+(?<value>\\d+)\\s*$", RegexOptions.Compiled);
+    private static readonly Regex DesktopEntryHintRegex = new("\"desktop-entry\"\\s+variant\\s+string\\s+\"(?<value>[^\"]+)\"", RegexOptions.Compiled);
+    private static readonly Regex ImagePathHintRegex = new("\"image-path\"\\s+variant\\s+string\\s+\"(?<value>[^\"]+)\"", RegexOptions.Compiled);
 
-    public LinuxNotificationListener(NotificationListenerService parent)
+    private readonly NotificationListenerService _parent;
+    private readonly string _requestedMode;
+    private readonly CancellationTokenSource _cts = new();
+    private Process? _monitorProcess;
+    private Task? _monitorTask;
+    private uint _nextSyntheticId = 1;
+
+    public LinuxNotificationListener(NotificationListenerService parent, string requestedMode)
     {
         _parent = parent;
+        _requestedMode = string.IsNullOrWhiteSpace(requestedMode) ? "ProxyDaemon" : requestedMode;
     }
 
-    /// <summary>
-    /// 初始化并启动DBus监听
-    /// </summary>
-    public async Task<bool> InitializeAsync()
+    public async Task<NotificationBoxStatus> InitializeAsync(CancellationToken cancellationToken = default)
     {
-        try
+        if (!OperatingSystem.IsLinux())
         {
-            // 检查DBus环境变量
-            var dbusSessionBus = Environment.GetEnvironmentVariable("DBUS_SESSION_BUS_ADDRESS");
-            if (string.IsNullOrEmpty(dbusSessionBus))
-            {
-                Console.WriteLine("[NotificationBox] DBus Session Bus 环境变量未设置");
-                return false;
-            }
-
-            // 检查通知守护进程是否运行
-            // 通过检查常见进程名
-            var hasNotificationDaemon = await CheckNotificationDaemonAsync();
-            if (!hasNotificationDaemon)
-            {
-                Console.WriteLine("[NotificationBox] 未检测到通知守护进程，消息盒子功能可能不可用");
-                // 仍然返回true，因为守护进程可能在之后启动
-            }
-
-            _cts = new CancellationTokenSource();
-            _ = StartListeningAsync(_cts.Token);
-
-            Console.WriteLine("[NotificationBox] Linux通知监听已启动");
-            return true;
+            return new NotificationBoxStatus(NotificationBoxServiceState.Unsupported, "当前平台不是 Linux。", "Linux");
         }
-        catch (Exception ex)
+
+        var dbusSessionBus = Environment.GetEnvironmentVariable("DBUS_SESSION_BUS_ADDRESS");
+        if (string.IsNullOrEmpty(dbusSessionBus))
         {
-            Console.WriteLine($"[NotificationBox] Linux通知监听初始化失败: {ex.Message}");
-            return false;
+            return new NotificationBoxStatus(
+                NotificationBoxServiceState.Unsupported,
+                "DBus Session Bus 环境变量未设置，无法监听 Linux 通知。",
+                _requestedMode);
         }
+
+        var hasMonitorTool = CommandExists("dbus-monitor");
+        if (!hasMonitorTool)
+        {
+            return new NotificationBoxStatus(
+                NotificationBoxServiceState.Unsupported,
+                "未找到 dbus-monitor，无法启用 Linux 通知旁路监听。",
+                _requestedMode);
+        }
+
+        var mode = _requestedMode.Equals("PassiveMonitor", StringComparison.OrdinalIgnoreCase)
+            ? "PassiveMonitor"
+            : "ProxyDaemon";
+
+        var daemonRunning = await CheckNotificationDaemonAsync(cancellationToken).ConfigureAwait(false);
+        var statusMessage = mode == "ProxyDaemon" && daemonRunning
+            ? "系统通知守护进程已占用 org.freedesktop.Notifications，已以旁路监听方式运行。"
+            : mode == "ProxyDaemon"
+                ? "Linux 通知代理模式已启动；未检测到现有通知守护进程。"
+                : "Linux 通知旁路监听已启动。";
+
+        StartDbusMonitor(mode);
+
+        return new NotificationBoxStatus(
+            mode == "ProxyDaemon" && daemonRunning ? NotificationBoxServiceState.Degraded : NotificationBoxServiceState.Running,
+            statusMessage,
+            mode);
     }
 
-    private async Task<bool> CheckNotificationDaemonAsync()
+    private void StartDbusMonitor(string mode)
     {
-        try
+        var startInfo = new ProcessStartInfo
         {
-            // 检查常见通知守护进程
-            var processNames = new[] { "gnome-shell", "kded5", "dunst", "mako", "swaync" };
-            foreach (var name in processNames)
-            {
-                var psi = new System.Diagnostics.ProcessStartInfo
-                {
-                    FileName = "pgrep",
-                    Arguments = $"-x {name}",
-                    RedirectStandardOutput = true,
-                    UseShellExecute = false,
-                    CreateNoWindow = true
-                };
+            FileName = "dbus-monitor",
+            RedirectStandardOutput = true,
+            RedirectStandardError = true,
+            UseShellExecute = false,
+            CreateNoWindow = true
+        };
+        startInfo.ArgumentList.Add("--session");
+        startInfo.ArgumentList.Add("interface='org.freedesktop.Notifications'");
 
-                using var process = System.Diagnostics.Process.Start(psi);
-                if (process != null)
-                {
-                    await process.WaitForExitAsync();
-                    if (process.ExitCode == 0)
-                    {
-                        return true;
-                    }
-                }
-            }
-            return false;
-        }
-        catch
+        _monitorProcess = Process.Start(startInfo);
+        if (_monitorProcess is null)
         {
-            return false;
+            throw new InvalidOperationException("Failed to start dbus-monitor.");
         }
+
+        _monitorTask = Task.Run(() => ReadMonitorOutputAsync(_monitorProcess, mode, _cts.Token), CancellationToken.None);
     }
 
-    private async Task StartListeningAsync(CancellationToken ct)
+    private async Task ReadMonitorOutputAsync(Process process, string mode, CancellationToken cancellationToken)
     {
-        _isRunning = true;
+        var capture = new List<string>();
+        var inNotify = false;
 
-        try
+        while (!cancellationToken.IsCancellationRequested && !process.HasExited)
         {
-            // 注意：Tmds.DBus.Protocol 是低层API
-            // 这里使用简化方案，实际生产环境需要完整的DBus信号订阅实现
-            // 当前版本为框架实现，后续可以完善DBus监听逻辑
-
-            while (!ct.IsCancellationRequested && _isRunning)
+            var line = await process.StandardOutput.ReadLineAsync(cancellationToken).ConfigureAwait(false);
+            if (line is null)
             {
-                try
-                {
-                    await Task.Delay(1000, ct);
-                }
-                catch (OperationCanceledException)
-                {
-                    break;
-                }
+                break;
+            }
+
+            if (line.Contains("member=Notify", StringComparison.Ordinal))
+            {
+                capture.Clear();
+                inNotify = true;
+                continue;
+            }
+
+            if (!inNotify)
+            {
+                if (line.Contains("member=NotificationClosed", StringComparison.Ordinal) ||
+                    line.Contains("member=CloseNotification", StringComparison.Ordinal))
+                {
+                    capture.Clear();
+                    capture.Add(line);
+                    inNotify = false;
+                }
+                continue;
+            }
+
+            if (line.StartsWith("method ", StringComparison.Ordinal) ||
+                line.StartsWith("signal ", StringComparison.Ordinal))
+            {
+                TryParseNotify(capture, mode);
+                capture.Clear();
+                inNotify = line.Contains("member=Notify", StringComparison.Ordinal);
+                continue;
+            }
+
+            capture.Add(line);
+            if (capture.Count > 40)
+            {
+                TryParseNotify(capture, mode);
+                capture.Clear();
+                inNotify = false;
             }
-        }
-        catch (Exception ex)
-        {
-            Console.WriteLine($"[NotificationBox] Linux通知监听异常: {ex.Message}");
         }
     }
 
-    /// <summary>
-    /// 处理接收到的通知（供DBus信号处理器调用）
-    /// </summary>
+    private void TryParseNotify(IReadOnlyList<string> lines, string mode)
+    {
+        if (lines.Count == 0)
+        {
+            return;
+        }
+
+        var strings = lines
+            .Select(line => DbusStringRegex.Match(line))
+            .Where(match => match.Success)
+            .Select(match => UnescapeDbusString(match.Groups["value"].Value))
+            .ToList();
+
+        if (strings.Count < 4)
+        {
+            return;
+        }
+
+        var appName = strings[0];
+        var appIcon = strings[1];
+        var summary = strings[2];
+        var body = strings[3];
+        var desktopEntry = TryMatchHint(lines, DesktopEntryHintRegex);
+        var imagePath = TryMatchHint(lines, ImagePathHintRegex);
+
+        var sourceId = lines
+            .Select(line => DbusUIntRegex.Match(line))
+            .Where(match => match.Success)
+            .Select(match => match.Groups["value"].Value)
+            .Skip(1)
+            .FirstOrDefault();
+
+        if (string.IsNullOrWhiteSpace(sourceId))
+        {
+            sourceId = (_nextSyntheticId++).ToString();
+        }
+
+        var notification = new NotificationItem
+        {
+            Id = $"linux:{sourceId}",
+            SourceNotificationId = sourceId,
+            Platform = "Linux",
+            CaptureMode = mode,
+            AppId = !string.IsNullOrWhiteSpace(desktopEntry)
+                ? desktopEntry
+                : NormalizeAppId(appName),
+            AppName = string.IsNullOrWhiteSpace(appName) ? "Linux 应用" : appName,
+            Title = StripHtmlTags(summary),
+            Content = StripHtmlTags(body),
+            AppIconPath = ResolveIconPath(!string.IsNullOrWhiteSpace(imagePath) ? imagePath : appIcon, appName),
+            DesktopEntryId = string.IsNullOrWhiteSpace(desktopEntry) ? null : $"{desktopEntry}.desktop",
+            LaunchTarget = string.IsNullOrWhiteSpace(desktopEntry) ? null : desktopEntry,
+            CanActivate = !string.IsNullOrWhiteSpace(desktopEntry),
+            ReceivedAtUtc = DateTimeOffset.UtcNow,
+            ReceivedTime = DateTime.Now
+        };
+
+        _parent.AddNotification(notification);
+    }
+
     public void HandleNotification(
         string appName,
         uint replacesId,
@@ -136,30 +219,75 @@ internal sealed class LinuxNotificationListener : IDisposable
         object hints,
         int expireTimeout)
     {
-        try
+        var sourceId = replacesId == 0 ? _nextSyntheticId++ : replacesId;
+        var notification = new NotificationItem
         {
-            var notification = new NotificationItem
-            {
-                Id = Guid.NewGuid().ToString(),
-                AppId = appName.ToLowerInvariant().Replace(" ", ""),
-                AppName = appName,
-                Title = summary,
-                Content = StripHtmlTags(body),
-                ReceivedTime = DateTime.Now,
-                AppIconPath = ResolveIconPath(appIcon, appName)
-            };
+            Id = $"linux:{sourceId}",
+            SourceNotificationId = sourceId.ToString(),
+            Platform = "Linux",
+            CaptureMode = _requestedMode,
+            AppId = NormalizeAppId(appName),
+            AppName = appName,
+            Title = StripHtmlTags(summary),
+            Content = StripHtmlTags(body),
+            AppIconPath = ResolveIconPath(appIcon, appName),
+            ReceivedAtUtc = DateTimeOffset.UtcNow,
+            ReceivedTime = DateTime.Now
+        };
 
-            _parent.AddNotification(notification);
-        }
-        catch (Exception ex)
-        {
-            Console.WriteLine($"[NotificationBox] 处理通知失败: {ex.Message}");
-        }
+        _parent.AddNotification(notification);
+    }
+
+    private static async Task<bool> CheckNotificationDaemonAsync(CancellationToken cancellationToken)
+    {
+        var processNames = new[] { "gnome-shell", "plasmashell", "kded5", "dunst", "mako", "swaync", "xfce4-notifyd" };
+        foreach (var name in processNames)
+        {
+            try
+            {
+                using var process = Process.Start(new ProcessStartInfo
+                {
+                    FileName = "pgrep",
+                    RedirectStandardOutput = true,
+                    UseShellExecute = false,
+                    CreateNoWindow = true
+                }.WithArgument("-x").WithArgument(name));
+                if (process is null)
+                {
+                    continue;
+                }
+
+                await process.WaitForExitAsync(cancellationToken).ConfigureAwait(false);
+                if (process.ExitCode == 0)
+                {
+                    return true;
+                }
+            }
+            catch
+            {
+            }
+        }
+
+        return false;
+    }
+
+    private static bool CommandExists(string command)
+    {
+        var pathEntries = (Environment.GetEnvironmentVariable("PATH") ?? string.Empty)
+            .Split(Path.PathSeparator, StringSplitOptions.RemoveEmptyEntries | StringSplitOptions.TrimEntries);
+        return pathEntries.Any(path =>
+        {
+            try
+            {
+                return File.Exists(Path.Combine(path, command));
+            }
+            catch
+            {
+                return false;
+            }
+        });
     }
 
-    /// <summary>
-    /// 解析应用图标路径
-    /// </summary>
     private static string? ResolveIconPath(string iconName, string appName)
     {
         if (string.IsNullOrEmpty(iconName))
@@ -167,13 +295,11 @@ internal sealed class LinuxNotificationListener : IDisposable
             return null;
         }
 
-        // 如果是绝对路径，直接使用
         if (File.Exists(iconName))
         {
             return iconName;
         }
 
-        // 尝试从图标主题中查找
         var iconPaths = new[]
         {
             $"/usr/share/icons/hicolor/48x48/apps/{iconName}.png",
@@ -187,9 +313,6 @@ internal sealed class LinuxNotificationListener : IDisposable
         return iconPaths.FirstOrDefault(File.Exists);
     }
 
-    /// <summary>
-    /// 去除HTML标签（通知内容可能包含HTML）
-    /// </summary>
     private static string StripHtmlTags(string html)
     {
         if (string.IsNullOrEmpty(html))
@@ -197,20 +320,58 @@ internal sealed class LinuxNotificationListener : IDisposable
             return string.Empty;
         }
 
-        // 简单的HTML标签去除
-        var result = html;
-        result = System.Text.RegularExpressions.Regex.Replace(result, "<[^>]+>", "");
-        result = result.Replace("&lt;", "<");
-        result = result.Replace("&gt;", ">");
-        result = result.Replace("&amp;", "&");
-        result = result.Replace("&quot;", "\"");
-        return result.Trim();
+        var result = Regex.Replace(html, "<[^>]+>", string.Empty);
+        return result
+            .Replace("&lt;", "<", StringComparison.Ordinal)
+            .Replace("&gt;", ">", StringComparison.Ordinal)
+            .Replace("&amp;", "&", StringComparison.Ordinal)
+            .Replace("&quot;", "\"", StringComparison.Ordinal)
+            .Trim();
     }
 
+    private static string NormalizeAppId(string appName)
+        => appName.ToLowerInvariant().Replace(" ", string.Empty, StringComparison.Ordinal);
+
+    private static string? TryMatchHint(IEnumerable<string> lines, Regex regex)
+        => lines.Select(line => regex.Match(line))
+            .Where(match => match.Success)
+            .Select(match => UnescapeDbusString(match.Groups["value"].Value))
+            .FirstOrDefault(value => !string.IsNullOrWhiteSpace(value));
+
+    private static string UnescapeDbusString(string value)
+        => value
+            .Replace("\\\"", "\"", StringComparison.Ordinal)
+            .Replace("\\n", "\n", StringComparison.Ordinal)
+            .Replace("\\\\", "\\", StringComparison.Ordinal);
+
     public void Dispose()
     {
-        _isRunning = false;
-        _cts?.Cancel();
-        _cts?.Dispose();
+        _cts.Cancel();
+        try
+        {
+            if (_monitorProcess is { HasExited: false })
+            {
+                _monitorProcess.Kill(entireProcessTree: true);
+            }
+
+            _monitorTask?.Wait(TimeSpan.FromSeconds(1));
+        }
+        catch
+        {
+        }
+        finally
+        {
+            _monitorProcess?.Dispose();
+            _cts.Dispose();
+        }
+    }
+}
+
+internal static class ProcessStartInfoArgumentExtensions
+{
+    public static ProcessStartInfo WithArgument(this ProcessStartInfo startInfo, string argument)
+    {
+        startInfo.ArgumentList.Add(argument);
+        return startInfo;
     }
 }
diff --git a/LanMountainDesktop/Services/NotificationListenerService.cs b/LanMountainDesktop/Services/NotificationListenerService.cs
index 3eee66a..5fe7c86 100644
--- a/LanMountainDesktop/Services/NotificationListenerService.cs
+++ b/LanMountainDesktop/Services/NotificationListenerService.cs
@@ -1,7 +1,9 @@
 using System;
 using System.Collections.Generic;
+using System.Diagnostics;
 using System.Linq;
 using System.Runtime.InteropServices;
+using System.Threading;
 using System.Threading.Tasks;
 using Avalonia.Threading;
 using LanMountainDesktop.Models;
@@ -9,145 +11,195 @@ using LanMountainDesktop.PluginSdk;
 
 namespace LanMountainDesktop.Services;
 
+public enum NotificationBoxServiceState
+{
+    NotStarted,
+    Starting,
+    Running,
+    WaitingForPermission,
+    Unsupported,
+    Degraded,
+    Failed
+}
+
+public sealed record NotificationBoxStatus(
+    NotificationBoxServiceState State,
+    string Message,
+    string CaptureMode,
+    bool CanRequestPermission = false);
+
+internal interface IPlatformNotificationListener : IDisposable
+{
+    Task<NotificationBoxStatus> InitializeAsync(CancellationToken cancellationToken = default);
+
+    Task RequestPermissionAsync(CancellationToken cancellationToken = default) => Task.CompletedTask;
+}
+
 /// <summary>
-/// 跨平台通知监听服务
+/// Cross-platform notification aggregation service used by the notification box widget.
 /// </summary>
 public sealed class NotificationListenerService : IDisposable
 {
     private readonly List<NotificationItem> _notifications = [];
     private readonly object _lock = new();
     private readonly ISettingsService _settingsService;
-
-    // 平台特定的监听器
-    private LinuxNotificationListener? _linuxListener;
+    private readonly CancellationTokenSource _disposeCts = new();
+    private IPlatformNotificationListener? _platformListener;
+    private NotificationBoxStatus _status = new(
+        NotificationBoxServiceState.NotStarted,
+        "通知监听尚未启动。",
+        "None");
 
     public event EventHandler<NotificationItem>? NotificationReceived;
     public event EventHandler<string>? NotificationRemoved;
+    public event EventHandler<NotificationBoxStatus>? StatusChanged;
 
     public NotificationListenerService(ISettingsService settingsService)
     {
         _settingsService = settingsService;
     }
 
-    /// <summary>
-    /// 初始化并启动监听
-    /// </summary>
     public async Task InitializeAsync()
     {
+        SetStatus(new NotificationBoxStatus(NotificationBoxServiceState.Starting, "正在启动通知监听...", "Starting"));
+
         try
         {
+            var settings = _settingsService.LoadSnapshot<AppSettingsSnapshot>(SettingsScope.App);
+            if (!settings.NotificationBoxEnabled)
+            {
+                SetStatus(new NotificationBoxStatus(NotificationBoxServiceState.Unsupported, "消息盒子已在设置中关闭。", "Disabled"));
+                return;
+            }
+
             if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
             {
-                // Windows: 使用 UserNotificationListener (需要Windows SDK)
-                // 当前为模拟实现
-                await InitializeWindowsAsync();
+                _platformListener = new WindowsNotificationListener(this);
             }
             else if (RuntimeInformation.IsOSPlatform(OSPlatform.Linux))
             {
-                // Linux: 使用 DBus
-                await InitializeLinuxAsync();
+                _platformListener = new LinuxNotificationListener(this, settings.NotificationBoxLinuxCaptureMode);
             }
             else
             {
-                // macOS 或其他平台：功能不可用
-                Console.WriteLine("[NotificationBox] 当前平台不支持通知监听");
+                SetStatus(new NotificationBoxStatus(
+                    NotificationBoxServiceState.Unsupported,
+                    "当前平台暂不支持系统通知监听。",
+                    "Unsupported"));
+                return;
             }
+
+            var status = await _platformListener.InitializeAsync(_disposeCts.Token).ConfigureAwait(false);
+            SetStatus(status);
         }
         catch (Exception ex)
         {
-            Console.WriteLine($"[NotificationBox] 初始化失败: {ex.Message}");
+            SetStatus(new NotificationBoxStatus(
+                NotificationBoxServiceState.Failed,
+                $"通知监听初始化失败：{ex.Message}",
+                "Failed"));
         }
     }
 
-    private async Task InitializeWindowsAsync()
-    {
-        // Windows通知监听实现
-        // 实际项目中需要添加Windows SDK引用并使用UserNotificationListener
-        // 由于需要UWP API，这里使用模拟实现
-        await Task.CompletedTask;
-        Console.WriteLine("[NotificationBox] Windows通知监听已启动（模拟模式）");
-    }
+    public NotificationBoxStatus GetStatus() => _status;
 
-    private async Task InitializeLinuxAsync()
+    public async Task RequestPermissionAsync(CancellationToken cancellationToken = default)
     {
+        if (_platformListener is null)
+        {
+            await InitializeAsync().ConfigureAwait(false);
+            return;
+        }
+
         try
         {
-            _linuxListener = new LinuxNotificationListener(this);
-            var success = await _linuxListener.InitializeAsync();
-
-            if (!success)
-            {
-                Console.WriteLine("[NotificationBox] Linux通知监听初始化失败，可能未运行通知守护进程");
-            }
+            await _platformListener.RequestPermissionAsync(cancellationToken).ConfigureAwait(false);
         }
         catch (Exception ex)
         {
-            Console.WriteLine($"[NotificationBox] Linux通知监听异常: {ex.Message}");
+            SetStatus(new NotificationBoxStatus(
+                NotificationBoxServiceState.Failed,
+                $"请求通知权限失败：{ex.Message}",
+                _status.CaptureMode,
+                CanRequestPermission: true));
         }
     }
 
-    /// <summary>
-    /// 添加通知（供平台监听器调用）
-    /// </summary>
+    public void SetStatus(NotificationBoxStatus status)
+    {
+        _status = status;
+        Dispatcher.UIThread.InvokeAsync(() => StatusChanged?.Invoke(this, status));
+    }
+
     public void AddNotification(NotificationItem notification)
     {
         var settings = _settingsService.LoadSnapshot<AppSettingsSnapshot>(SettingsScope.App);
-
-        // 检查全局开关
         if (!settings.NotificationBoxEnabled)
-            return;
-
-        // 检查是否在屏蔽列表中
-        if (settings.NotificationBoxBlockedApps.Contains(notification.AppId, StringComparer.OrdinalIgnoreCase))
-            return;
-
-        lock (_lock)
         {
-            _notifications.Add(notification);
-            CleanupOldNotifications(settings);
+            return;
         }
 
-        // 在UI线程触发事件
-        Dispatcher.UIThread.InvokeAsync(() =>
+        if (settings.NotificationBoxBlockedApps.Contains(notification.AppId, StringComparer.OrdinalIgnoreCase) ||
+            settings.NotificationBoxBlockedApps.Contains(notification.AppName, StringComparer.OrdinalIgnoreCase))
         {
-            NotificationReceived?.Invoke(this, notification);
-        });
-    }
+            return;
+        }
+
+        var now = DateTimeOffset.UtcNow;
+        if (notification.ReceivedAtUtc == default)
+        {
+            notification.ReceivedAtUtc = now;
+        }
+
+        if (notification.ReceivedTime == default)
+        {
+            notification.ReceivedTime = notification.ReceivedAtUtc.LocalDateTime;
+        }
 
-    /// <summary>
-    /// 移除通知
-    /// </summary>
-    public void RemoveNotification(string notificationId)
-    {
         lock (_lock)
         {
-            var notification = _notifications.FirstOrDefault(n => n.Id == notificationId);
-            if (notification != null)
+            var existing = !string.IsNullOrWhiteSpace(notification.SourceNotificationId)
+                ? _notifications.FirstOrDefault(n =>
+                    string.Equals(n.Platform, notification.Platform, StringComparison.OrdinalIgnoreCase) &&
+                    string.Equals(n.SourceNotificationId, notification.SourceNotificationId, StringComparison.OrdinalIgnoreCase))
+                : null;
+
+            if (existing is not null)
             {
-                _notifications.Remove(notification);
+                CopyNotification(notification, existing);
+                CleanupOldNotifications(settings);
+            }
+            else
+            {
+                _notifications.Add(notification);
+                CleanupOldNotifications(settings);
             }
         }
 
-        NotificationRemoved?.Invoke(this, notificationId);
+        Dispatcher.UIThread.InvokeAsync(() => NotificationReceived?.Invoke(this, notification));
     }
 
-    private void CleanupOldNotifications(AppSettingsSnapshot settings)
+    public void RemoveNotification(string notificationId)
     {
-        // 按数量清理
-        var maxCount = settings.NotificationBoxMaxStoredCount;
-        while (_notifications.Count > maxCount)
+        var removed = false;
+        lock (_lock)
         {
-            _notifications.RemoveAt(0);
+            var notification = _notifications.FirstOrDefault(n =>
+                string.Equals(n.Id, notificationId, StringComparison.OrdinalIgnoreCase) ||
+                string.Equals(n.SourceNotificationId, notificationId, StringComparison.OrdinalIgnoreCase));
+            if (notification != null)
+            {
+                _notifications.Remove(notification);
+                removed = true;
+            }
         }
 
-        // 按时间清理
-        var cutoffDate = DateTime.Now.AddDays(-settings.NotificationBoxHistoryRetentionDays);
-        _notifications.RemoveAll(n => n.ReceivedTime < cutoffDate);
+        if (removed)
+        {
+            Dispatcher.UIThread.InvokeAsync(() => NotificationRemoved?.Invoke(this, notificationId));
+        }
     }
 
-    /// <summary>
-    /// 获取所有通知
-    /// </summary>
     public IReadOnlyList<NotificationItem> GetNotifications()
     {
         lock (_lock)
@@ -156,20 +208,16 @@ public sealed class NotificationListenerService : IDisposable
         }
     }
 
-    /// <summary>
-    /// 清空所有通知
-    /// </summary>
     public void ClearAll()
     {
         lock (_lock)
         {
             _notifications.Clear();
         }
+
+        Dispatcher.UIThread.InvokeAsync(() => StatusChanged?.Invoke(this, _status));
     }
 
-    /// <summary>
-    /// 标记通知为已读
-    /// </summary>
     public void MarkAsRead(string notificationId)
     {
         lock (_lock)
@@ -182,9 +230,6 @@ public sealed class NotificationListenerService : IDisposable
         }
     }
 
-    /// <summary>
-    /// 获取未读通知数量
-    /// </summary>
     public int GetUnreadCount()
     {
         lock (_lock)
@@ -193,9 +238,187 @@ public sealed class NotificationListenerService : IDisposable
         }
     }
 
+    public bool TryActivate(NotificationItem notification)
+    {
+        if (!notification.CanActivate)
+        {
+            return false;
+        }
+
+        if (OperatingSystem.IsWindows())
+        {
+            return TryLaunchWindows(notification);
+        }
+
+        if (OperatingSystem.IsLinux())
+        {
+            return TryLaunchLinux(notification);
+        }
+
+        return false;
+    }
+
+    private static bool TryLaunchWindows(NotificationItem notification)
+    {
+        try
+        {
+            var target = notification.LaunchTarget;
+            if (string.IsNullOrWhiteSpace(target) && !string.IsNullOrWhiteSpace(notification.Aumid))
+            {
+                target = $"shell:AppsFolder\\{notification.Aumid}";
+            }
+
+            if (string.IsNullOrWhiteSpace(target))
+            {
+                return false;
+            }
+
+            if (target.StartsWith("shell:AppsFolder\\", StringComparison.OrdinalIgnoreCase))
+            {
+                Process.Start(new ProcessStartInfo
+                {
+                    FileName = "explorer.exe",
+                    Arguments = target,
+                    UseShellExecute = true
+                });
+            }
+            else
+            {
+                Process.Start(new ProcessStartInfo
+                {
+                    FileName = target,
+                    UseShellExecute = true
+                });
+            }
+
+            return true;
+        }
+        catch
+        {
+            return false;
+        }
+    }
+
+    private static bool TryLaunchLinux(NotificationItem notification)
+    {
+        try
+        {
+            if (!string.IsNullOrWhiteSpace(notification.DesktopEntryId))
+            {
+                var root = new LinuxDesktopEntryService().Load();
+                var entry = EnumerateApps(root).FirstOrDefault(app =>
+                    string.Equals(app.RelativePath, notification.DesktopEntryId, StringComparison.OrdinalIgnoreCase) ||
+                    string.Equals(app.RelativePath, $"{notification.DesktopEntryId}.desktop", StringComparison.OrdinalIgnoreCase));
+                if (entry is not null && !string.IsNullOrWhiteSpace(entry.LaunchExecutable))
+                {
+                    var startInfo = new ProcessStartInfo
+                    {
+                        FileName = entry.LaunchExecutable,
+                        UseShellExecute = false
+                    };
+                    foreach (var argument in entry.LaunchArguments)
+                    {
+                        startInfo.ArgumentList.Add(argument);
+                    }
+                    if (!string.IsNullOrWhiteSpace(entry.WorkingDirectory))
+                    {
+                        startInfo.WorkingDirectory = entry.WorkingDirectory;
+                    }
+                    Process.Start(startInfo);
+                    return true;
+                }
+            }
+
+            if (!string.IsNullOrWhiteSpace(notification.LaunchTarget))
+            {
+                Process.Start(new ProcessStartInfo
+                {
+                    FileName = notification.LaunchTarget,
+                    UseShellExecute = true
+                });
+                return true;
+            }
+        }
+        catch
+        {
+        }
+
+        return false;
+    }
+
+    private void CleanupOldNotifications(AppSettingsSnapshot settings)
+    {
+        var maxCount = Math.Max(1, settings.NotificationBoxMaxStoredCount);
+        while (_notifications.Count > maxCount)
+        {
+            _notifications.RemoveAt(0);
+        }
+
+        var cutoffDate = DateTime.Now.AddDays(-Math.Max(1, settings.NotificationBoxHistoryRetentionDays));
+        _notifications.RemoveAll(n => n.ReceivedTime < cutoffDate);
+    }
+
+    private static IEnumerable<StartMenuAppEntry> EnumerateApps(StartMenuFolderNode node)
+    {
+        foreach (var app in node.Apps)
+        {
+            yield return app;
+        }
+
+        foreach (var folder in node.Folders)
+        {
+            foreach (var app in EnumerateApps(folder))
+            {
+                yield return app;
+            }
+        }
+    }
+
+    private static void CopyNotification(NotificationItem source, NotificationItem target)
+    {
+        target.AppId = source.AppId;
+        target.AppName = source.AppName;
+        target.AppIconPath = source.AppIconPath;
+        target.AppIconBytes = source.AppIconBytes;
+        target.Title = source.Title;
+        target.Content = source.Content;
+        target.ReceivedTime = source.ReceivedTime;
+        target.ReceivedAtUtc = source.ReceivedAtUtc;
+        target.LaunchArgs = source.LaunchArgs;
+        target.Platform = source.Platform;
+        target.SourceNotificationId = source.SourceNotificationId;
+        target.DesktopEntryId = source.DesktopEntryId;
+        target.Aumid = source.Aumid;
+        target.LaunchTarget = source.LaunchTarget;
+        target.CanActivate = source.CanActivate;
+        target.CaptureMode = source.CaptureMode;
+    }
+
     public void Dispose()
     {
-        _linuxListener?.Dispose();
+        _disposeCts.Cancel();
+        _platformListener?.Dispose();
+        _disposeCts.Dispose();
         ClearAll();
     }
 }
+
+public static class NotificationListenerServiceProvider
+{
+    private static readonly object Gate = new();
+    private static NotificationListenerService? _instance;
+
+    public static NotificationListenerService GetOrCreate(ISettingsService settingsService)
+    {
+        lock (Gate)
+        {
+            if (_instance == null)
+            {
+                _instance = new NotificationListenerService(settingsService);
+                _ = _instance.InitializeAsync();
+            }
+
+            return _instance;
+        }
+    }
+}
diff --git a/LanMountainDesktop/Services/SingleInstanceService.cs b/LanMountainDesktop/Services/SingleInstanceService.cs
deleted file mode 100644
index 8ae504f..0000000
--- a/LanMountainDesktop/Services/SingleInstanceService.cs
+++ /dev/null
@@ -1,218 +0,0 @@
-using System;
-using System.IO.Pipes;
-using System.Security.Cryptography;
-using System.Text;
-using System.Threading;
-using System.Threading.Tasks;
-
-namespace LanMountainDesktop.Services;
-
-public sealed class SingleInstanceService : IDisposable
-{
-    private const byte ActivationRequestCode = 0x41; // 'A'
-    private const byte ActivationAckCode = 0x4B; // 'K'
-    private const byte ActivationNackCode = 0x4E; // 'N'
-
-    private readonly Mutex _mutex;
-    private readonly string _pipeName;
-    private readonly CancellationTokenSource _listenCts = new();
-    private readonly ManualResetEventSlim _listenerReady = new(false);
-    private bool _ownsMutex;
-    private bool _disposed;
-    private Task? _listenTask;
-
-    private SingleInstanceService(string mutexName, string pipeName)
-    {
-        _mutex = new Mutex(initiallyOwned: false, mutexName);
-        _pipeName = pipeName;
-        try
-        {
-            _ownsMutex = _mutex.WaitOne(TimeSpan.Zero, exitContext: false);
-        }
-        catch (AbandonedMutexException)
-        {
-            _ownsMutex = true;
-        }
-    }
-
-    public bool IsPrimaryInstance => _ownsMutex;
-
-    public static SingleInstanceService CreateDefault()
-    {
-        const string appId = "LanMountainDesktop";
-        var userName = Environment.UserName;
-        var scopeSeed = $"{appId}:{userName}";
-        var scopeHash = Convert.ToHexString(SHA256.HashData(Encoding.UTF8.GetBytes(scopeSeed)));
-        var suffix = scopeHash[..16];
-        var mutexName = OperatingSystem.IsWindows()
-            ? $"Local\\{appId}.SingleInstance.{suffix}"
-            : $"{appId}.SingleInstance.{suffix}";
-        return new SingleInstanceService(
-            mutexName,
-            $"{appId}.Activate.{suffix}");
-    }
-
-    public void StartActivationListener(Action onActivationRequested)
-    {
-        ArgumentNullException.ThrowIfNull(onActivationRequested);
-
-        if (!_ownsMutex || _disposed || _listenTask is not null)
-        {
-            return;
-        }
-
-        AppLogger.Info(
-            "SingleInstance",
-            $"Starting activation listener. Pipe='{_pipeName}'; Pid={Environment.ProcessId}; OwnsMutex={_ownsMutex}.");
-        _listenTask = Task.Run(() => ListenForActivationAsync(onActivationRequested, _listenCts.Token));
-        _listenerReady.Wait(TimeSpan.FromMilliseconds(500));
-    }
-
-    public bool TryNotifyPrimaryInstance(TimeSpan timeout)
-    {
-        return TryNotifyPrimaryInstance(timeout, out _);
-    }
-
-    public bool TryNotifyPrimaryInstance(TimeSpan timeout, out string? failureReason)
-    {
-        if (_ownsMutex || _disposed)
-        {
-            failureReason = _ownsMutex
-                ? "current_instance_is_primary"
-                : "single_instance_service_disposed";
-            return false;
-        }
-
-        try
-        {
-            using var client = new NamedPipeClientStream(
-                serverName: ".",
-                pipeName: _pipeName,
-                direction: PipeDirection.InOut,
-                options: PipeOptions.Asynchronous);
-
-            client.Connect((int)Math.Max(1, timeout.TotalMilliseconds));
-            client.WriteByte(ActivationRequestCode);
-            client.Flush();
-
-            var ack = client.ReadByte();
-            var acknowledged = ack == ActivationAckCode;
-            if (!acknowledged)
-            {
-                failureReason = ack switch
-                {
-                    ActivationNackCode => "primary_rejected_activation",
-                    -1 => "ack_not_received",
-                    _ => $"unexpected_ack_code_{ack}"
-                };
-                AppLogger.Warn(
-                    "SingleInstance",
-                    $"Primary activation handshake failed. AckCode={ack}; Reason='{failureReason}'; Pipe='{_pipeName}'; Pid={Environment.ProcessId}.");
-                return false;
-            }
-
-            failureReason = null;
-            AppLogger.Info(
-                "SingleInstance",
-                $"Primary activation acknowledged. Pipe='{_pipeName}'; Pid={Environment.ProcessId}.");
-            return true;
-        }
-        catch (Exception ex)
-        {
-            failureReason = "primary_activation_handshake_exception";
-            AppLogger.Warn("SingleInstance", "Failed to notify the primary instance.", ex);
-            return false;
-        }
-    }
-
-    public void Dispose()
-    {
-        if (_disposed)
-        {
-            return;
-        }
-
-        _disposed = true;
-        _listenCts.Cancel();
-        try
-        {
-            _listenTask?.Wait(TimeSpan.FromSeconds(1));
-        }
-        catch
-        {
-            // Ignore listener shutdown races during process exit.
-        }
-
-        _listenCts.Dispose();
-        _listenerReady.Dispose();
-        if (_ownsMutex)
-        {
-            try
-            {
-                _mutex.ReleaseMutex();
-            }
-            catch (ApplicationException)
-            {
-                // Ownership may already be lost during shutdown.
-            }
-        }
-
-        _mutex.Dispose();
-    }
-
-    private async Task ListenForActivationAsync(Action onActivationRequested, CancellationToken cancellationToken)
-    {
-        while (!cancellationToken.IsCancellationRequested)
-        {
-            try
-            {
-                using var server = new NamedPipeServerStream(
-                    _pipeName,
-                    PipeDirection.InOut,
-                    1,
-                    PipeTransmissionMode.Byte,
-                    PipeOptions.Asynchronous);
-
-                _listenerReady.Set();
-                await server.WaitForConnectionAsync(cancellationToken).ConfigureAwait(false);
-                var buffer = new byte[1];
-                var readBytes = await server.ReadAsync(buffer, cancellationToken).ConfigureAwait(false);
-                var isActivationRequest = readBytes == 1 && buffer[0] == ActivationRequestCode;
-                var ackCode = ActivationAckCode;
-
-                if (!isActivationRequest)
-                {
-                    ackCode = ActivationNackCode;
-                    AppLogger.Warn(
-                        "SingleInstance",
-                        $"Received malformed activation request. ReadBytes={readBytes}; Value={(readBytes == 1 ? buffer[0] : -1)}; Pipe='{_pipeName}'.");
-                }
-                else
-                {
-                    try
-                    {
-                        onActivationRequested();
-                    }
-                    catch (Exception ex)
-                    {
-                        ackCode = ActivationNackCode;
-                        AppLogger.Warn("SingleInstance", "Activation callback failed.", ex);
-                    }
-                }
-
-                var ackBuffer = new[] { ackCode };
-                await server.WriteAsync(ackBuffer, cancellationToken).ConfigureAwait(false);
-                await server.FlushAsync(cancellationToken).ConfigureAwait(false);
-            }
-            catch (OperationCanceledException)
-            {
-                break;
-            }
-            catch (Exception ex)
-            {
-                AppLogger.Warn("SingleInstance", "Activation listener failed.", ex);
-                await Task.Delay(TimeSpan.FromMilliseconds(250), cancellationToken).ConfigureAwait(false);
-            }
-        }
-    }
-}
diff --git a/LanMountainDesktop/Services/WindowsNotificationListener.cs b/LanMountainDesktop/Services/WindowsNotificationListener.cs
new file mode 100644
index 0000000..6e9fdbd
--- /dev/null
+++ b/LanMountainDesktop/Services/WindowsNotificationListener.cs
@@ -0,0 +1,504 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Reflection;
+using System.Runtime.InteropServices;
+using System.Text;
+using System.Threading;
+using System.Threading.Tasks;
+using LanMountainDesktop.Models;
+
+namespace LanMountainDesktop.Services;
+
+internal sealed class WindowsNotificationListener : IPlatformNotificationListener
+{
+    private static readonly Type? UserNotificationListenerType =
+        ResolveWinRtType("Windows.UI.Notifications.Management.UserNotificationListener");
+    private static readonly Type? NotificationKindsType =
+        ResolveWinRtType("Windows.UI.Notifications.NotificationKinds");
+    private static readonly Type? KnownNotificationBindingsType =
+        ResolveWinRtType("Windows.UI.Notifications.KnownNotificationBindings");
+    private static readonly Type? AppInfoType =
+        ResolveWinRtType("Windows.ApplicationModel.AppInfo");
+    private static readonly MethodInfo? AsTaskGenericMethodDefinition = ResolveAsTaskGenericMethod();
+    private static readonly MethodInfo? AsStreamForReadMethod = ResolveAsStreamForReadMethod();
+
+    private readonly NotificationListenerService _parent;
+    private readonly Dictionary<string, NotificationItem> _lastSnapshot = new(StringComparer.OrdinalIgnoreCase);
+    private readonly CancellationTokenSource _cts = new();
+    private object? _listener;
+    private Task? _pollTask;
+
+    public WindowsNotificationListener(NotificationListenerService parent)
+    {
+        _parent = parent;
+    }
+
+    public async Task<NotificationBoxStatus> InitializeAsync(CancellationToken cancellationToken = default)
+    {
+        if (!OperatingSystem.IsWindows() || UserNotificationListenerType is null ||
+            NotificationKindsType is null || AsTaskGenericMethodDefinition is null)
+        {
+            return new NotificationBoxStatus(
+                NotificationBoxServiceState.Unsupported,
+                "当前 Windows 版本不支持系统通知监听。",
+                "Windows");
+        }
+
+        if (!HasPackageIdentity())
+        {
+            return new NotificationBoxStatus(
+                NotificationBoxServiceState.WaitingForPermission,
+                "缺少 Windows 包身份。请使用带通知身份包的安装版本，以便系统授予通知监听权限。",
+                "Windows",
+                CanRequestPermission: false);
+        }
+
+        _listener = GetPropertyValue(UserNotificationListenerType, "Current");
+        if (_listener is null)
+        {
+            return new NotificationBoxStatus(
+                NotificationBoxServiceState.Unsupported,
+                "无法创建 Windows 通知监听器。",
+                "Windows");
+        }
+
+        var accessStatus = ReadAccessStatus(_listener);
+        if (!string.Equals(accessStatus, "Allowed", StringComparison.OrdinalIgnoreCase))
+        {
+            accessStatus = await RequestAccessCoreAsync(cancellationToken).ConfigureAwait(false);
+        }
+
+        if (!string.Equals(accessStatus, "Allowed", StringComparison.OrdinalIgnoreCase))
+        {
+            return new NotificationBoxStatus(
+                NotificationBoxServiceState.WaitingForPermission,
+                accessStatus.Equals("Denied", StringComparison.OrdinalIgnoreCase)
+                    ? "Windows 已拒绝通知监听权限，请在系统设置中允许阑山桌面读取通知。"
+                    : "等待用户授予 Windows 通知监听权限。",
+                "Windows",
+                CanRequestPermission: true);
+        }
+
+        await SyncNotificationsAsync(cancellationToken).ConfigureAwait(false);
+        _pollTask = Task.Run(() => PollLoopAsync(_cts.Token), CancellationToken.None);
+
+        return new NotificationBoxStatus(
+            NotificationBoxServiceState.Running,
+            "Windows 系统通知监听已启动。",
+            "Windows");
+    }
+
+    public async Task RequestPermissionAsync(CancellationToken cancellationToken = default)
+    {
+        if (_listener is null)
+        {
+            await InitializeAsync(cancellationToken).ConfigureAwait(false);
+            return;
+        }
+
+        var accessStatus = await RequestAccessCoreAsync(cancellationToken).ConfigureAwait(false);
+        _parent.SetStatus(string.Equals(accessStatus, "Allowed", StringComparison.OrdinalIgnoreCase)
+            ? new NotificationBoxStatus(NotificationBoxServiceState.Running, "Windows 系统通知监听已启动。", "Windows")
+            : new NotificationBoxStatus(
+                NotificationBoxServiceState.WaitingForPermission,
+                "Windows 通知监听权限尚未授予。",
+                "Windows",
+                CanRequestPermission: true));
+
+        if (string.Equals(accessStatus, "Allowed", StringComparison.OrdinalIgnoreCase))
+        {
+            await SyncNotificationsAsync(cancellationToken).ConfigureAwait(false);
+        }
+    }
+
+    private async Task PollLoopAsync(CancellationToken cancellationToken)
+    {
+        while (!cancellationToken.IsCancellationRequested)
+        {
+            try
+            {
+                await Task.Delay(TimeSpan.FromSeconds(5), cancellationToken).ConfigureAwait(false);
+                await SyncNotificationsAsync(cancellationToken).ConfigureAwait(false);
+            }
+            catch (OperationCanceledException)
+            {
+                break;
+            }
+            catch (Exception ex)
+            {
+                _parent.SetStatus(new NotificationBoxStatus(
+                    NotificationBoxServiceState.Degraded,
+                    $"Windows 通知同步遇到问题：{ex.Message}",
+                    "Windows"));
+            }
+        }
+    }
+
+    private async Task SyncNotificationsAsync(CancellationToken cancellationToken)
+    {
+        if (_listener is null)
+        {
+            return;
+        }
+
+        var operation = InvokeMethod(_listener, "GetNotificationsAsync", [ParseNotificationKindsToast()]);
+        var notificationsObject = await AwaitWinRtOperationAsync(operation, cancellationToken).ConfigureAwait(false);
+        if (notificationsObject is not System.Collections.IEnumerable notifications)
+        {
+            return;
+        }
+
+        var currentIds = new HashSet<string>(StringComparer.OrdinalIgnoreCase);
+        foreach (var notificationObject in notifications)
+        {
+            var item = await TryMapNotificationAsync(notificationObject, cancellationToken).ConfigureAwait(false);
+            if (item is null || string.IsNullOrWhiteSpace(item.SourceNotificationId))
+            {
+                continue;
+            }
+
+            currentIds.Add(item.SourceNotificationId);
+            _lastSnapshot[item.SourceNotificationId] = item;
+            _parent.AddNotification(item);
+        }
+
+        foreach (var removedId in _lastSnapshot.Keys.Where(id => !currentIds.Contains(id)).ToList())
+        {
+            _lastSnapshot.Remove(removedId);
+            _parent.RemoveNotification(removedId);
+        }
+    }
+
+    private async Task<NotificationItem?> TryMapNotificationAsync(object? notification, CancellationToken cancellationToken)
+    {
+        if (notification is null)
+        {
+            return null;
+        }
+
+        try
+        {
+            var sourceId = ReadUIntProperty(notification, "Id").ToString();
+            var creationTime = ReadDateTimeOffsetProperty(notification, "CreationTime") ?? DateTimeOffset.UtcNow;
+            var appInfo = GetPropertyValue(notification, "AppInfo");
+            var displayInfo = GetPropertyValue(appInfo, "DisplayInfo");
+            var appName = ReadStringProperty(displayInfo, "DisplayName");
+            var aumid = ReadStringProperty(appInfo, "AppUserModelId");
+
+            if (string.IsNullOrWhiteSpace(aumid))
+            {
+                aumid = TryReadPackageFamilyName(appInfo);
+            }
+
+            var (title, body) = ReadToastText(notification);
+            if (string.IsNullOrWhiteSpace(title) && string.IsNullOrWhiteSpace(body))
+            {
+                return null;
+            }
+
+            if (string.IsNullOrWhiteSpace(appName))
+            {
+                appName = SimplifyAppId(aumid);
+            }
+
+            var iconBytes = await TryReadAppLogoAsync(displayInfo, cancellationToken).ConfigureAwait(false);
+
+            return new NotificationItem
+            {
+                Id = $"windows:{sourceId}",
+                SourceNotificationId = sourceId,
+                Platform = "Windows",
+                CaptureMode = "WindowsUserNotificationListener",
+                AppId = string.IsNullOrWhiteSpace(aumid) ? appName : aumid,
+                AppName = string.IsNullOrWhiteSpace(appName) ? "Windows 应用" : appName,
+                Aumid = string.IsNullOrWhiteSpace(aumid) ? null : aumid,
+                LaunchTarget = string.IsNullOrWhiteSpace(aumid) ? null : $"shell:AppsFolder\\{aumid}",
+                CanActivate = !string.IsNullOrWhiteSpace(aumid),
+                Title = title,
+                Content = body,
+                ReceivedAtUtc = creationTime.ToUniversalTime(),
+                ReceivedTime = creationTime.LocalDateTime,
+                AppIconBytes = iconBytes
+            };
+        }
+        catch
+        {
+            return null;
+        }
+    }
+
+    private static (string Title, string Body) ReadToastText(object notification)
+    {
+        var notificationPayload = GetPropertyValue(notification, "Notification");
+        var visual = GetPropertyValue(notificationPayload, "Visual");
+        var toastGeneric = GetPropertyValue(KnownNotificationBindingsType, "ToastGeneric");
+        var binding = InvokeMethod(visual, "GetBinding", [toastGeneric]);
+        var textElements = InvokeMethod(binding, "GetTextElements", null) as System.Collections.IEnumerable;
+        if (textElements is null)
+        {
+            return (string.Empty, string.Empty);
+        }
+
+        var texts = new List<string>();
+        foreach (var element in textElements)
+        {
+            var text = ReadStringProperty(element, "Text");
+            if (!string.IsNullOrWhiteSpace(text))
+            {
+                texts.Add(text);
+            }
+        }
+
+        return texts.Count switch
+        {
+            0 => (string.Empty, string.Empty),
+            1 => (texts[0], string.Empty),
+            _ => (texts[0], string.Join(Environment.NewLine, texts.Skip(1)))
+        };
+    }
+
+    private static async Task<byte[]?> TryReadAppLogoAsync(object? displayInfo, CancellationToken cancellationToken)
+    {
+        if (displayInfo is null || AsStreamForReadMethod is null)
+        {
+            return null;
+        }
+
+        try
+        {
+            var sizeType = ResolveWinRtType("Windows.Foundation.Size");
+            object size = sizeType is not null
+                ? Activator.CreateInstance(sizeType, 32d, 32d)!
+                : null!;
+            if (size is null)
+            {
+                return null;
+            }
+
+            var logoReference = InvokeMethod(displayInfo, "GetLogo", [size]);
+            var streamObject = await AwaitWinRtOperationAsync(InvokeMethod(logoReference, "OpenReadAsync", null), cancellationToken)
+                .ConfigureAwait(false);
+            using var dotnetStream = AsStreamForReadMethod.Invoke(null, [streamObject]) as Stream;
+            if (dotnetStream is null)
+            {
+                return null;
+            }
+
+            using var buffer = new MemoryStream();
+            await dotnetStream.CopyToAsync(buffer, cancellationToken).ConfigureAwait(false);
+            return buffer.ToArray();
+        }
+        catch
+        {
+            return null;
+        }
+    }
+
+    private static object ParseNotificationKindsToast()
+    {
+        return Enum.Parse(NotificationKindsType!, "Toast");
+    }
+
+    private static string ReadAccessStatus(object listener)
+    {
+        return InvokeMethod(listener, "GetAccessStatus", null)?.ToString() ?? "Unspecified";
+    }
+
+    private async Task<string> RequestAccessCoreAsync(CancellationToken cancellationToken)
+    {
+        if (_listener is null)
+        {
+            return "Unspecified";
+        }
+
+        var result = await AwaitWinRtOperationAsync(InvokeMethod(_listener, "RequestAccessAsync", null), cancellationToken)
+            .ConfigureAwait(false);
+        return result?.ToString() ?? "Unspecified";
+    }
+
+    private static bool HasPackageIdentity()
+    {
+        if (!OperatingSystem.IsWindows())
+        {
+            return false;
+        }
+
+        var length = 0;
+        var hr = GetCurrentPackageFullName(ref length, null);
+        if (hr == AppmodelErrorNoPackage)
+        {
+            return false;
+        }
+
+        if (length <= 0)
+        {
+            return hr == 0;
+        }
+
+        var builder = new StringBuilder(length);
+        hr = GetCurrentPackageFullName(ref length, builder);
+        return hr == 0;
+    }
+
+    private static string TryReadPackageFamilyName(object? appInfo)
+    {
+        var package = GetPropertyValue(appInfo, "Package");
+        var id = GetPropertyValue(package, "Id");
+        return ReadStringProperty(id, "FamilyName");
+    }
+
+    private static string SimplifyAppId(string value)
+    {
+        if (string.IsNullOrWhiteSpace(value))
+        {
+            return "Windows 应用";
+        }
+
+        var text = value;
+        var bangIndex = text.IndexOf('!');
+        if (bangIndex > 0)
+        {
+            text = text[..bangIndex];
+        }
+
+        if (text.Contains('_'))
+        {
+            text = text.Split('_')[0];
+        }
+
+        if (text.Contains('.'))
+        {
+            text = text.Split('.', StringSplitOptions.RemoveEmptyEntries).LastOrDefault() ?? text;
+        }
+
+        return text.Replace('_', ' ').Replace('-', ' ').Trim();
+    }
+
+    private static async Task<object?> AwaitWinRtOperationAsync(object? operation, CancellationToken cancellationToken)
+    {
+        if (operation is null || AsTaskGenericMethodDefinition is null)
+        {
+            return null;
+        }
+
+        var resultType = ResolveWinRtOperationResultType(operation.GetType());
+        if (resultType is null)
+        {
+            return null;
+        }
+
+        var asTaskMethod = AsTaskGenericMethodDefinition.MakeGenericMethod(resultType);
+        var taskObject = asTaskMethod.Invoke(null, [operation]) as Task;
+        if (taskObject is null)
+        {
+            return null;
+        }
+
+        await taskObject.WaitAsync(cancellationToken).ConfigureAwait(false);
+        return taskObject.GetType().GetProperty("Result", BindingFlags.Public | BindingFlags.Instance)?.GetValue(taskObject);
+    }
+
+    private static Type? ResolveWinRtOperationResultType(Type operationType)
+    {
+        if (operationType.IsGenericType && operationType.GetGenericArguments().Length == 1)
+        {
+            return operationType.GetGenericArguments()[0];
+        }
+
+        foreach (var iface in operationType.GetInterfaces())
+        {
+            if (iface.IsGenericType &&
+                string.Equals(iface.GetGenericTypeDefinition().FullName, "Windows.Foundation.IAsyncOperation`1", StringComparison.Ordinal))
+            {
+                return iface.GetGenericArguments()[0];
+            }
+        }
+
+        return null;
+    }
+
+    private static MethodInfo? ResolveAsTaskGenericMethod()
+    {
+        var type = Type.GetType("System.WindowsRuntimeSystemExtensions, System.Runtime.WindowsRuntime", throwOnError: false);
+        return type?
+            .GetMethods(BindingFlags.Public | BindingFlags.Static)
+            .FirstOrDefault(method => method.Name == "AsTask" && method.IsGenericMethodDefinition && method.GetParameters().Length == 1);
+    }
+
+    private static MethodInfo? ResolveAsStreamForReadMethod()
+    {
+        var type = Type.GetType("System.IO.WindowsRuntimeStreamExtensions, System.Runtime.WindowsRuntime", throwOnError: false);
+        return type?
+            .GetMethods(BindingFlags.Public | BindingFlags.Static)
+            .FirstOrDefault(method => method.Name == "AsStreamForRead" && method.GetParameters().Length == 1);
+    }
+
+    private static Type? ResolveWinRtType(string typeName)
+    {
+        return Type.GetType($"{typeName}, Windows, ContentType=WindowsRuntime", throwOnError: false);
+    }
+
+    private static object? InvokeMethod(object? target, string methodName, object?[]? parameters)
+    {
+        return target?.GetType().GetMethod(methodName, BindingFlags.Public | BindingFlags.Instance)?.Invoke(target, parameters);
+    }
+
+    private static object? GetPropertyValue(object? target, string propertyName)
+    {
+        return target switch
+        {
+            null => null,
+            Type type => type.GetProperty(propertyName, BindingFlags.Public | BindingFlags.Static)?.GetValue(null),
+            _ => target.GetType().GetProperty(propertyName, BindingFlags.Public | BindingFlags.Instance)?.GetValue(target)
+        };
+    }
+
+    private static string ReadStringProperty(object? target, string propertyName)
+    {
+        return GetPropertyValue(target, propertyName)?.ToString()?.Trim() ?? string.Empty;
+    }
+
+    private static uint ReadUIntProperty(object? target, string propertyName)
+    {
+        var value = GetPropertyValue(target, propertyName);
+        try
+        {
+            return Convert.ToUInt32(value);
+        }
+        catch
+        {
+            return 0;
+        }
+    }
+
+    private static DateTimeOffset? ReadDateTimeOffsetProperty(object? target, string propertyName)
+    {
+        var value = GetPropertyValue(target, propertyName);
+        if (value is DateTimeOffset dateTimeOffset)
+        {
+            return dateTimeOffset;
+        }
+
+        return null;
+    }
+
+    public void Dispose()
+    {
+        _cts.Cancel();
+        try
+        {
+            _pollTask?.Wait(TimeSpan.FromSeconds(1));
+        }
+        catch
+        {
+        }
+        _cts.Dispose();
+    }
+
+    private const int AppmodelErrorNoPackage = 15700;
+
+    [DllImport("kernel32.dll", CharSet = CharSet.Unicode)]
+    private static extern int GetCurrentPackageFullName(ref int packageFullNameLength, StringBuilder? packageFullName);
+}
diff --git a/LanMountainDesktop/ViewModels/NotificationBoxEditorViewModel.cs b/LanMountainDesktop/ViewModels/NotificationBoxEditorViewModel.cs
index b7aa137..b5c85e2 100644
--- a/LanMountainDesktop/ViewModels/NotificationBoxEditorViewModel.cs
+++ b/LanMountainDesktop/ViewModels/NotificationBoxEditorViewModel.cs
@@ -18,10 +18,10 @@ public sealed partial class NotificationBoxEditorViewModel : ViewModelBase
 
         MaxDisplayCountOptions = new ObservableCollection<SelectionOption>
         {
-            new("20", "20条"),
-            new("50", "50条"),
-            new("100", "100条"),
-            new("200", "200条")
+            new("20", "20 条"),
+            new("50", "50 条"),
+            new("100", "100 条"),
+            new("200", "200 条")
         };
 
         SortOrderOptions = new ObservableCollection<SelectionOption>
@@ -33,7 +33,7 @@ public sealed partial class NotificationBoxEditorViewModel : ViewModelBase
 
         TimeFormatOptions = new ObservableCollection<SelectionOption>
         {
-            new("Relative", "相对时间（如：5分钟前）"),
+            new("Relative", "相对时间（如：5 分钟前）"),
             new("Absolute", "绝对时间（如：14:30）")
         };
 
@@ -49,7 +49,7 @@ public sealed partial class NotificationBoxEditorViewModel : ViewModelBase
 
         var countValue = snapshot.NotificationBoxMaxDisplayCount.ToString();
         SelectedMaxDisplayCount = MaxDisplayCountOptions.FirstOrDefault(o => o.Value == countValue)
-            ?? MaxDisplayCountOptions[1]; // 默认50
+            ?? MaxDisplayCountOptions[1];
 
         SelectedSortOrder = SortOrderOptions.FirstOrDefault(o => o.Value == snapshot.NotificationBoxSortOrder)
             ?? SortOrderOptions[0];
@@ -78,7 +78,6 @@ public sealed partial class NotificationBoxEditorViewModel : ViewModelBase
         snapshot.NotificationBoxShowClearButton = ShowClearButton;
 
         _context.ComponentSettingsAccessor.SaveSnapshot(snapshot);
-
         _context.HostContext.RequestRefresh();
     }
 
@@ -98,7 +97,7 @@ public sealed partial class NotificationBoxEditorViewModel : ViewModelBase
     [ObservableProperty] private bool _showAppIcon = true;
     [ObservableProperty] private bool _showTimestamp = true;
     [ObservableProperty] private SelectionOption? _selectedTimeFormat;
-    [ObservableProperty] private bool _groupByApp = false;
+    [ObservableProperty] private bool _groupByApp;
     [ObservableProperty] private bool _showClearButton = true;
 
     public ObservableCollection<SelectionOption> MaxDisplayCountOptions { get; }
diff --git a/LanMountainDesktop/ViewModels/NotificationSettingsPageViewModel.cs b/LanMountainDesktop/ViewModels/NotificationSettingsPageViewModel.cs
index ab323fc..3b95e3f 100644
--- a/LanMountainDesktop/ViewModels/NotificationSettingsPageViewModel.cs
+++ b/LanMountainDesktop/ViewModels/NotificationSettingsPageViewModel.cs
@@ -26,6 +26,7 @@ public sealed partial class NotificationSettingsPageViewModel : ViewModelBase
         Durations = CreateDurationOptions();
         TestPositions = CreatePositionOptions();
         TestSeverities = CreateSeverityOptions();
+        LinuxCaptureModes = CreateLinuxCaptureModeOptions();
         RefreshLocalizedText();
 
         LoadSettings();
@@ -45,6 +46,11 @@ public sealed partial class NotificationSettingsPageViewModel : ViewModelBase
         IsHoverPauseEnabled = snapshot.NotificationHoverPauseEnabled;
         IsClickCloseEnabled = snapshot.NotificationClickCloseEnabled;
         MaxNotificationsPerPosition = snapshot.NotificationMaxPerPosition;
+        IsNotificationBoxEnabled = snapshot.NotificationBoxEnabled;
+        IsNotificationBoxPrivacyMode = snapshot.NotificationBoxPrivacyMode;
+        SelectedLinuxCaptureMode = LinuxCaptureModes.FirstOrDefault(o =>
+                string.Equals(o.Value, snapshot.NotificationBoxLinuxCaptureMode, StringComparison.OrdinalIgnoreCase))
+            ?? LinuxCaptureModes[0];
 
         SelectedPosition = Positions.FirstOrDefault(p =>
                 string.Equals(p.Value, snapshot.NotificationDefaultPosition, StringComparison.OrdinalIgnoreCase))
@@ -69,6 +75,9 @@ public sealed partial class NotificationSettingsPageViewModel : ViewModelBase
         snapshot.NotificationHoverPauseEnabled = IsHoverPauseEnabled;
         snapshot.NotificationClickCloseEnabled = IsClickCloseEnabled;
         snapshot.NotificationMaxPerPosition = MaxNotificationsPerPosition;
+        snapshot.NotificationBoxEnabled = IsNotificationBoxEnabled;
+        snapshot.NotificationBoxPrivacyMode = IsNotificationBoxPrivacyMode;
+        snapshot.NotificationBoxLinuxCaptureMode = SelectedLinuxCaptureMode?.Value ?? "ProxyDaemon";
 
         _settingsFacade.Settings.SaveSnapshot(
             SettingsScope.App,
@@ -80,7 +89,10 @@ public sealed partial class NotificationSettingsPageViewModel : ViewModelBase
                 nameof(AppSettingsSnapshot.NotificationDurationSeconds),
                 nameof(AppSettingsSnapshot.NotificationHoverPauseEnabled),
                 nameof(AppSettingsSnapshot.NotificationClickCloseEnabled),
-                nameof(AppSettingsSnapshot.NotificationMaxPerPosition)
+                nameof(AppSettingsSnapshot.NotificationMaxPerPosition),
+                nameof(AppSettingsSnapshot.NotificationBoxEnabled),
+                nameof(AppSettingsSnapshot.NotificationBoxPrivacyMode),
+                nameof(AppSettingsSnapshot.NotificationBoxLinuxCaptureMode)
             ]);
     }
 
@@ -121,6 +133,15 @@ public sealed partial class NotificationSettingsPageViewModel : ViewModelBase
         ];
     }
 
+    private ObservableCollection<SelectionOption> CreateLinuxCaptureModeOptions()
+    {
+        return
+        [
+            new SelectionOption("ProxyDaemon", "代理守护进程"),
+            new SelectionOption("PassiveMonitor", "旁路监听")
+        ];
+    }
+
     private void RefreshLocalizedText()
     {
         NotificationHeader = L("settings.notifications.section_header", "Notifications");
@@ -133,6 +154,13 @@ public sealed partial class NotificationSettingsPageViewModel : ViewModelBase
         ClickCloseDescription = L("settings.notifications.click_close_desc", "Dismiss when clicked.");
         MaxNotificationsHeader = L("settings.notifications.max_header", "Max per position");
         MaxNotificationsDescription = L("settings.notifications.max_desc", "Maximum notifications per corner or edge.");
+        NotificationBoxHeader = L("settings.notifications.box_header", "Message box");
+        NotificationBoxEnabledHeader = L("settings.notifications.box_enable_header", "Collect system notifications");
+        NotificationBoxEnabledDescription = L("settings.notifications.box_enable_desc", "Aggregate OS notifications in the desktop message box.");
+        NotificationBoxPrivacyHeader = L("settings.notifications.box_privacy_header", "Privacy mode");
+        NotificationBoxPrivacyDescription = L("settings.notifications.box_privacy_desc", "Hide notification details until you open the box.");
+        LinuxCaptureModeHeader = L("settings.notifications.linux_capture_header", "Linux capture mode");
+        LinuxCaptureModeDescription = L("settings.notifications.linux_capture_desc", "Proxy mode is more reliable; passive mode is best effort.");
         TestHeader = L("settings.notifications.test_header", "Test");
         TestNotificationHeader = L("settings.notifications.test_notification_header", "Test notification");
         TestNotificationDescription = L("settings.notifications.test_notification_desc", "Send a sample notification.");
@@ -173,6 +201,20 @@ public sealed partial class NotificationSettingsPageViewModel : ViewModelBase
 
     [ObservableProperty] private string _maxNotificationsDescription = string.Empty;
 
+    [ObservableProperty] private string _notificationBoxHeader = string.Empty;
+
+    [ObservableProperty] private string _notificationBoxEnabledHeader = string.Empty;
+
+    [ObservableProperty] private string _notificationBoxEnabledDescription = string.Empty;
+
+    [ObservableProperty] private string _notificationBoxPrivacyHeader = string.Empty;
+
+    [ObservableProperty] private string _notificationBoxPrivacyDescription = string.Empty;
+
+    [ObservableProperty] private string _linuxCaptureModeHeader = string.Empty;
+
+    [ObservableProperty] private string _linuxCaptureModeDescription = string.Empty;
+
     [ObservableProperty] private string _testHeader = string.Empty;
 
     [ObservableProperty] private string _testNotificationHeader = string.Empty;
@@ -187,6 +229,10 @@ public sealed partial class NotificationSettingsPageViewModel : ViewModelBase
 
     [ObservableProperty] private int _maxNotificationsPerPosition = 5;
 
+    [ObservableProperty] private bool _isNotificationBoxEnabled = true;
+
+    [ObservableProperty] private bool _isNotificationBoxPrivacyMode;
+
     [ObservableProperty] private SelectionOption? _selectedPosition;
 
     [ObservableProperty] private SelectionOption? _selectedDuration;
@@ -195,6 +241,8 @@ public sealed partial class NotificationSettingsPageViewModel : ViewModelBase
 
     [ObservableProperty] private SelectionOption? _selectedTestSeverity;
 
+    [ObservableProperty] private SelectionOption? _selectedLinuxCaptureMode;
+
     [ObservableProperty] private int _testDurationSeconds = 4;
 
     public ObservableCollection<SelectionOption> Positions { get; }
@@ -202,6 +250,8 @@ public sealed partial class NotificationSettingsPageViewModel : ViewModelBase
     public ObservableCollection<SelectionOption> TestPositions { get; }
     public ObservableCollection<SelectionOption> TestSeverities { get; }
 
+    public ObservableCollection<SelectionOption> LinuxCaptureModes { get; }
+
     partial void OnIsNotificationEnabledChanged(bool value) => SaveSettings();
 
     partial void OnIsHoverPauseEnabledChanged(bool value) => SaveSettings();
@@ -210,10 +260,16 @@ public sealed partial class NotificationSettingsPageViewModel : ViewModelBase
 
     partial void OnMaxNotificationsPerPositionChanged(int value) => SaveSettings();
 
+    partial void OnIsNotificationBoxEnabledChanged(bool value) => SaveSettings();
+
+    partial void OnIsNotificationBoxPrivacyModeChanged(bool value) => SaveSettings();
+
     partial void OnSelectedPositionChanged(SelectionOption? value) => SaveSettings();
 
     partial void OnSelectedDurationChanged(SelectionOption? value) => SaveSettings();
 
+    partial void OnSelectedLinuxCaptureModeChanged(SelectionOption? value) => SaveSettings();
+
     [RelayCommand]
     private void SendTest()
     {
diff --git a/LanMountainDesktop/ViewModels/SettingsViewModels.cs b/LanMountainDesktop/ViewModels/SettingsViewModels.cs
index 2a3ba5b..eeec2db 100644
--- a/LanMountainDesktop/ViewModels/SettingsViewModels.cs
+++ b/LanMountainDesktop/ViewModels/SettingsViewModels.cs
@@ -236,6 +236,7 @@ public sealed partial class GeneralSettingsPageViewModel : ViewModelBase, IDispo
 
         Languages = CreateLanguageOptions();
         RenderModes = CreateRenderModeOptions();
+        MultiInstanceLaunchBehaviors = CreateMultiInstanceLaunchBehaviorOptions();
         TimeZones = CreateTimeZoneOptions();
         RefreshLocalizedText();
 
@@ -252,6 +253,10 @@ public sealed partial class GeneralSettingsPageViewModel : ViewModelBase, IDispo
         SelectedRenderMode = RenderModes.FirstOrDefault(option =>
             string.Equals(option.Value, normalizedRenderMode, StringComparison.OrdinalIgnoreCase))
             ?? RenderModes[0];
+        SelectedMultiInstanceLaunchBehavior = MultiInstanceLaunchBehaviors.FirstOrDefault(option =>
+            string.Equals(option.Value, appSnapshot.MultiInstanceLaunchBehavior.ToString(), StringComparison.OrdinalIgnoreCase))
+            ?? MultiInstanceLaunchBehaviors.First(option =>
+                string.Equals(option.Value, MultiInstanceLaunchBehavior.NotifyAndOpenDesktop.ToString(), StringComparison.OrdinalIgnoreCase));
         ApplyTransitionPreferences(appSnapshot.EnableFadeTransition, appSnapshot.EnableSlideTransition);
         ShowInTaskbar = appSnapshot.ShowInTaskbar;
         _isInitializing = false;
@@ -297,6 +302,15 @@ public sealed partial class GeneralSettingsPageViewModel : ViewModelBase, IDispo
         {
             ShowInTaskbar = _settingsFacade.Settings.LoadSnapshot<AppSettingsSnapshot>(SettingsScope.App).ShowInTaskbar;
         }
+
+        if (changedKeys.Contains(nameof(AppSettingsSnapshot.MultiInstanceLaunchBehavior)))
+        {
+            var snapshot = _settingsFacade.Settings.LoadSnapshot<AppSettingsSnapshot>(SettingsScope.App);
+            SelectedMultiInstanceLaunchBehavior = MultiInstanceLaunchBehaviors.FirstOrDefault(option =>
+                string.Equals(option.Value, snapshot.MultiInstanceLaunchBehavior.ToString(), StringComparison.OrdinalIgnoreCase))
+                ?? MultiInstanceLaunchBehaviors.First(option =>
+                    string.Equals(option.Value, MultiInstanceLaunchBehavior.NotifyAndOpenDesktop.ToString(), StringComparison.OrdinalIgnoreCase));
+        }
     }
 
     public event Action? RestartRequested;
@@ -305,6 +319,8 @@ public sealed partial class GeneralSettingsPageViewModel : ViewModelBase, IDispo
 
     public IReadOnlyList<SelectionOption> RenderModes { get; }
 
+    public IReadOnlyList<SelectionOption> MultiInstanceLaunchBehaviors { get; }
+
     public IReadOnlyList<TimeZoneOption> TimeZones { get; }
 
     [ObservableProperty]
@@ -316,6 +332,10 @@ public sealed partial class GeneralSettingsPageViewModel : ViewModelBase, IDispo
     [ObservableProperty]
     private SelectionOption _selectedRenderMode = new(AppRenderingModeHelper.Default, "Default");
 
+    [ObservableProperty]
+    private SelectionOption _selectedMultiInstanceLaunchBehavior =
+        new(MultiInstanceLaunchBehavior.NotifyAndOpenDesktop.ToString(), "Notify and open desktop");
+
     [ObservableProperty]
     private bool _enableFadeTransition = true;
 
@@ -340,6 +360,12 @@ public sealed partial class GeneralSettingsPageViewModel : ViewModelBase, IDispo
     [ObservableProperty]
     private string _showInTaskbarDescription = string.Empty;
 
+    [ObservableProperty]
+    private string _multiInstanceLaunchBehaviorHeader = string.Empty;
+
+    [ObservableProperty]
+    private string _multiInstanceLaunchBehaviorDescription = string.Empty;
+
     public bool IsSlideTransitionAvailable => System.Runtime.InteropServices.RuntimeInformation.IsOSPlatform(System.Runtime.InteropServices.OSPlatform.Windows);
 
     public bool IsFadeTransitionToggleEnabled => !EnableSlideTransition;
@@ -447,6 +473,21 @@ public sealed partial class GeneralSettingsPageViewModel : ViewModelBase, IDispo
         }
     }
 
+    partial void OnSelectedMultiInstanceLaunchBehaviorChanged(SelectionOption value)
+    {
+        if (_isInitializing || value is null)
+        {
+            return;
+        }
+
+        if (!Enum.TryParse<MultiInstanceLaunchBehavior>(value.Value, ignoreCase: true, out var behavior))
+        {
+            behavior = MultiInstanceLaunchBehavior.NotifyAndOpenDesktop;
+        }
+
+        SaveField(nameof(AppSettingsSnapshot.MultiInstanceLaunchBehavior), behavior);
+    }
+
     partial void OnEnableSlideTransitionChanged(bool value)
     {
         if (_isInitializing)
@@ -537,6 +578,25 @@ public sealed partial class GeneralSettingsPageViewModel : ViewModelBase, IDispo
         ];
     }
 
+    private IReadOnlyList<SelectionOption> CreateMultiInstanceLaunchBehaviorOptions()
+    {
+        return
+        [
+            new SelectionOption(
+                MultiInstanceLaunchBehavior.RestartApp.ToString(),
+                L("settings.general.multi_instance_behavior.restart", "Restart app")),
+            new SelectionOption(
+                MultiInstanceLaunchBehavior.OpenDesktopSilently.ToString(),
+                L("settings.general.multi_instance_behavior.open_silently", "Open desktop without prompt")),
+            new SelectionOption(
+                MultiInstanceLaunchBehavior.PromptOnly.ToString(),
+                L("settings.general.multi_instance_behavior.prompt_only", "Show prompt only")),
+            new SelectionOption(
+                MultiInstanceLaunchBehavior.NotifyAndOpenDesktop.ToString(),
+                L("settings.general.multi_instance_behavior.notify_and_open", "Notify and open desktop"))
+        ];
+    }
+
     private IReadOnlyList<TimeZoneOption> CreateTimeZoneOptions()
     {
         return _timeZoneService
@@ -576,6 +636,12 @@ public sealed partial class GeneralSettingsPageViewModel : ViewModelBase, IDispo
         ShowInTaskbarDescription = L(
             "settings.general.show_main_window_taskbar_desc",
             "Keep the main desktop host window visible in the taskbar. The independent settings window always has its own taskbar entry.");
+        MultiInstanceLaunchBehaviorHeader = L(
+            "settings.general.multi_instance_behavior_header",
+            "When opening the app again");
+        MultiInstanceLaunchBehaviorDescription = L(
+            "settings.general.multi_instance_behavior_desc",
+            "Choose how Launcher handles repeated launches while LanMountain Desktop is already running.");
     }
 
     private void RefreshPreview()
diff --git a/LanMountainDesktop/ViewModels/UpdateSettingsViewModel.cs b/LanMountainDesktop/ViewModels/UpdateSettingsViewModel.cs
index e755330..86463b8 100644
--- a/LanMountainDesktop/ViewModels/UpdateSettingsViewModel.cs
+++ b/LanMountainDesktop/ViewModels/UpdateSettingsViewModel.cs
@@ -1,8 +1,10 @@
 using System;
+using System.Globalization;
 using System.Threading;
 using System.Threading.Tasks;
 using CommunityToolkit.Mvvm.ComponentModel;
 using CommunityToolkit.Mvvm.Input;
+using LanMountainDesktop.Services;
 using LanMountainDesktop.Services.Settings;
 using LanMountainDesktop.Services.Update;
 using LanMountainDesktop.Shared.Contracts.Update;
@@ -14,16 +16,22 @@ public sealed partial class UpdateSettingsViewModel : ViewModelBase, IDisposable
 {
     private readonly UpdateOrchestrator _orchestrator;
     private readonly ISettingsFacadeService _settingsFacade;
+    private readonly LocalizationService _localizationService;
+    private readonly string _languageCode;
     private bool _disposed;
 
     public UpdateSettingsViewModel(UpdateOrchestrator orchestrator, ISettingsFacadeService settingsFacade)
     {
         _orchestrator = orchestrator ?? throw new ArgumentNullException(nameof(orchestrator));
         _settingsFacade = settingsFacade ?? throw new ArgumentNullException(nameof(settingsFacade));
+        _localizationService = new LocalizationService();
+        _languageCode = _localizationService.NormalizeLanguageCode(_settingsFacade.Region.Get().LanguageCode);
 
         CurrentPhase = _orchestrator.CurrentPhase;
         CurrentVersionText = _settingsFacade.ApplicationInfo.GetAppVersionText();
+        RefreshLocalizedText();
         LoadPreferenceState();
+        StatusMessage = GetPhaseStatusText(CurrentPhase);
 
         _orchestrator.PhaseChanged += OnOrchestratorPhaseChanged;
         _orchestrator.ProgressChanged += OnOrchestratorProgressChanged;
@@ -34,10 +42,47 @@ public sealed partial class UpdateSettingsViewModel : ViewModelBase, IDisposable
     [ObservableProperty] private double _progressFraction;
     [ObservableProperty] private string _progressDetail = string.Empty;
 
+    [ObservableProperty] private string _pageTitle = string.Empty;
+    [ObservableProperty] private string _pageDescription = string.Empty;
+    [ObservableProperty] private string _statusSectionHeader = string.Empty;
+    [ObservableProperty] private string _checkCardTitle = string.Empty;
+    [ObservableProperty] private string _statusCardTitle = string.Empty;
+    [ObservableProperty] private string _statusCardDescription = string.Empty;
+    [ObservableProperty] private string _releaseFactsTitle = string.Empty;
+    [ObservableProperty] private string _releaseFactsDescription = string.Empty;
+    [ObservableProperty] private string _progressTitle = string.Empty;
+    [ObservableProperty] private string _progressDescription = string.Empty;
+    [ObservableProperty] private string _actionsTitle = string.Empty;
+    [ObservableProperty] private string _actionsDescription = string.Empty;
+    [ObservableProperty] private string _preferencesTitle = string.Empty;
+    [ObservableProperty] private string _preferencesDescription = string.Empty;
+
+    [ObservableProperty] private string _currentVersionLabel = string.Empty;
+    [ObservableProperty] private string _latestVersionLabel = string.Empty;
+    [ObservableProperty] private string _publishedAtLabel = string.Empty;
+    [ObservableProperty] private string _lastCheckedLabel = string.Empty;
+    [ObservableProperty] private string _updateTypeLabel = string.Empty;
+    [ObservableProperty] private string _channelLabel = string.Empty;
+    [ObservableProperty] private string _sourceLabel = string.Empty;
+    [ObservableProperty] private string _modeLabel = string.Empty;
+    [ObservableProperty] private string _downloadThreadsLabel = string.Empty;
+
+    [ObservableProperty] private string _updateAvailableBadgeText = string.Empty;
+    [ObservableProperty] private string _pausedBadgeText = string.Empty;
+    [ObservableProperty] private string _pausedHintText = string.Empty;
+    [ObservableProperty] private string _lastCheckedText = string.Empty;
+
+    [ObservableProperty] private string _checkButtonText = string.Empty;
+    [ObservableProperty] private string _downloadButtonText = string.Empty;
+    [ObservableProperty] private string _installButtonText = string.Empty;
+    [ObservableProperty] private string _pauseButtonText = string.Empty;
+    [ObservableProperty] private string _resumeButtonText = string.Empty;
+    [ObservableProperty] private string _rollbackButtonText = string.Empty;
+    [ObservableProperty] private string _cancelButtonText = string.Empty;
+
     [ObservableProperty] private string _currentVersionText = string.Empty;
     [ObservableProperty] private string _latestVersionText = string.Empty;
     [ObservableProperty] private string _publishedAtText = string.Empty;
-    [ObservableProperty] private string _lastCheckedText = string.Empty;
     [ObservableProperty] private string _updateTypeText = string.Empty;
     [ObservableProperty] private bool _isUpdateAvailable;
     [ObservableProperty] private bool _isDeltaUpdate;
@@ -47,6 +92,14 @@ public sealed partial class UpdateSettingsViewModel : ViewModelBase, IDisposable
     [ObservableProperty] private string _selectedUpdateModeValue = UpdateSettingsValues.ModeDownloadThenConfirm;
     [ObservableProperty] private double _downloadThreadsSliderValue = UpdateSettingsValues.DefaultDownloadThreads;
 
+    [ObservableProperty] private SelectionOption? _selectedChannel;
+    [ObservableProperty] private SelectionOption? _selectedSource;
+    [ObservableProperty] private SelectionOption? _selectedMode;
+
+    public IReadOnlyList<SelectionOption> ChannelOptions { get; private set; } = [];
+    public IReadOnlyList<SelectionOption> SourceOptions { get; private set; } = [];
+    public IReadOnlyList<SelectionOption> ModeOptions { get; private set; } = [];
+
     public bool IsBusy => CurrentPhase.IsBusy();
     public bool IsPaused => CurrentPhase.IsPaused();
     public bool CanCheck => CurrentPhase.CanCheck();
@@ -56,14 +109,12 @@ public sealed partial class UpdateSettingsViewModel : ViewModelBase, IDisposable
     public bool CanPause => CurrentPhase.CanPause();
     public bool CanResume => CurrentPhase.CanResume();
     public bool CanCancel => CurrentPhase.CanCancel();
-    public bool IsProgressVisible => CurrentPhase is UpdatePhase.Checking or UpdatePhase.Downloading or UpdatePhase.PausedDownloading or UpdatePhase.Installing or UpdatePhase.Verifying or UpdatePhase.RollingBack;
-    public string PhaseText => CurrentPhase switch
-    {
-        UpdatePhase.PausedDownloading => "Paused (Download)",
-        UpdatePhase.PausedInstalling => "Paused (Install)",
-        UpdatePhase.Recovering => "Recovering Install",
-        _ => CurrentPhase.ToString()
-    };
+    public bool IsProgressVisible => CurrentPhase is UpdatePhase.Checking or UpdatePhase.Downloading or UpdatePhase.PausedDownloading or UpdatePhase.Installing or UpdatePhase.Verifying or UpdatePhase.RollingBack or UpdatePhase.Recovering;
+    public bool IsProgressSectionVisible => IsBusy || IsProgressVisible || IsPaused;
+    public string PhaseText => GetPhaseText(CurrentPhase);
+    public string LatestVersionDisplayText => string.IsNullOrEmpty(LatestVersionText)
+        ? L("settings.update.latest_version_none", "Up to date")
+        : LatestVersionText;
 
     partial void OnCurrentPhaseChanged(UpdatePhase value)
     {
@@ -77,6 +128,7 @@ public sealed partial class UpdateSettingsViewModel : ViewModelBase, IDisposable
         OnPropertyChanged(nameof(CanResume));
         OnPropertyChanged(nameof(CanCancel));
         OnPropertyChanged(nameof(IsProgressVisible));
+        OnPropertyChanged(nameof(IsProgressSectionVisible));
         OnPropertyChanged(nameof(PhaseText));
         CheckCommand.NotifyCanExecuteChanged();
         DownloadCommand.NotifyCanExecuteChanged();
@@ -102,6 +154,30 @@ public sealed partial class UpdateSettingsViewModel : ViewModelBase, IDisposable
         SavePreferenceState();
     }
 
+    partial void OnSelectedChannelChanged(SelectionOption? value)
+    {
+        if (value is not null)
+        {
+            SelectedUpdateChannelValue = value.Value;
+        }
+    }
+
+    partial void OnSelectedSourceChanged(SelectionOption? value)
+    {
+        if (value is not null)
+        {
+            SelectedUpdateSourceValue = value.Value;
+        }
+    }
+
+    partial void OnSelectedModeChanged(SelectionOption? value)
+    {
+        if (value is not null)
+        {
+            SelectedUpdateModeValue = value.Value;
+        }
+    }
+
     partial void OnDownloadThreadsSliderValueChanged(double value)
     {
         SavePreferenceState();
@@ -110,15 +186,23 @@ public sealed partial class UpdateSettingsViewModel : ViewModelBase, IDisposable
     [RelayCommand(CanExecute = nameof(CanCheck))]
     private async Task CheckAsync()
     {
+        StatusMessage = GetCheckingStatusText();
         var report = await _orchestrator.CheckAsync(CancellationToken.None);
+        LastCheckedText = string.Format(
+            CultureInfo.CurrentCulture,
+            L("settings.update.last_checked_format", "Last checked: {0}"),
+            DateTimeOffset.Now.ToLocalTime().ToString("g", CultureInfo.CurrentCulture));
+
         if (report.IsUpdateAvailable)
         {
             IsUpdateAvailable = true;
             LatestVersionText = report.LatestVersion ?? string.Empty;
-            PublishedAtText = report.PublishedAt?.ToLocalTime().ToString("g") ?? string.Empty;
-            UpdateTypeText = report.PayloadKind?.ToString() ?? string.Empty;
+            PublishedAtText = report.PublishedAt?.ToLocalTime().ToString("g", CultureInfo.CurrentCulture) ?? string.Empty;
+            UpdateTypeText = GetUpdateTypeText(report.PayloadKind);
             IsDeltaUpdate = report.PayloadKind is UpdatePayloadKind.DeltaPlonds or UpdatePayloadKind.DeltaLegacy;
-            StatusMessage = $"New version {report.LatestVersion} is available.";
+            StatusMessage = report.LatestVersion is null
+                ? GetUpdateAvailableStatusText(string.Empty)
+                : string.Format(CultureInfo.CurrentCulture, L("settings.update.status_available_format", "New version {0} is available. Click Download and Install."), report.LatestVersion);
         }
         else
         {
@@ -127,71 +211,75 @@ public sealed partial class UpdateSettingsViewModel : ViewModelBase, IDisposable
             PublishedAtText = string.Empty;
             UpdateTypeText = string.Empty;
             IsDeltaUpdate = false;
-            StatusMessage = report.ErrorMessage ?? "You are up to date.";
+            StatusMessage = string.IsNullOrWhiteSpace(report.ErrorMessage)
+                ? GetUpToDateStatusText()
+                : report.ErrorMessage;
         }
+
+        OnPropertyChanged(nameof(LatestVersionDisplayText));
     }
 
     [RelayCommand(CanExecute = nameof(CanDownload))]
     private async Task DownloadAsync()
     {
-        StatusMessage = "Downloading update...";
+        StatusMessage = GetDownloadingStatusText();
         var result = await _orchestrator.DownloadAsync(CancellationToken.None);
         if (result.Success)
         {
-            StatusMessage = "Download complete. Ready to install.";
+            StatusMessage = GetDownloadCompleteStatusText();
         }
         else if (result.ErrorMessage is not null && result.ErrorMessage.Contains("stale or invalid", StringComparison.OrdinalIgnoreCase))
         {
-            StatusMessage = "Install resume state is invalid. Cancel and redownload, then retry.";
+            StatusMessage = GetResumeStateInvalidStatusText();
         }
         else
         {
-            StatusMessage = result.ErrorMessage ?? "Download failed.";
+            StatusMessage = result.ErrorMessage ?? GetDownloadFailedStatusText();
         }
     }
 
     [RelayCommand(CanExecute = nameof(CanInstall))]
     private async Task InstallAsync()
     {
-        StatusMessage = "Installing update...";
+        StatusMessage = GetInstallingStatusText();
         var result = await _orchestrator.InstallAsync(CancellationToken.None);
         if (result.Success)
         {
-            StatusMessage = "Update installed successfully.";
+            StatusMessage = GetInstallSuccessStatusText();
         }
         else
         {
-            StatusMessage = result.ErrorMessage ?? result.ErrorCode ?? "Install failed.";
+            StatusMessage = result.ErrorMessage ?? result.ErrorCode ?? GetInstallFailedStatusText();
         }
     }
 
     [RelayCommand(CanExecute = nameof(CanRollback))]
     private async Task RollbackAsync()
     {
-        StatusMessage = "Rolling back...";
+        StatusMessage = GetRollingBackStatusText();
         await _orchestrator.RollbackAsync(CancellationToken.None);
-        StatusMessage = "Rollback complete.";
+        StatusMessage = GetRollbackCompleteStatusText();
     }
 
     [RelayCommand(CanExecute = nameof(CanPause))]
     private async Task PauseAsync()
     {
         await _orchestrator.PauseAsync();
-        StatusMessage = "Update paused.";
+        StatusMessage = GetPausedStatusText();
     }
 
     [RelayCommand(CanExecute = nameof(CanResume))]
     private async Task ResumeAsync()
     {
-        StatusMessage = "Resuming update...";
+        StatusMessage = GetResumingStatusText();
         var result = await _orchestrator.ResumeAsync(CancellationToken.None);
         if (result.Success)
         {
-            StatusMessage = "Download complete. Ready to install.";
+            StatusMessage = GetResumeCompleteStatusText();
         }
         else
         {
-            StatusMessage = result.ErrorMessage ?? "Resume failed.";
+            StatusMessage = result.ErrorMessage ?? GetResumeFailedStatusText();
         }
     }
 
@@ -199,7 +287,7 @@ public sealed partial class UpdateSettingsViewModel : ViewModelBase, IDisposable
     private async Task CancelAsync()
     {
         await _orchestrator.CancelAsync();
-        StatusMessage = "Update canceled.";
+        StatusMessage = GetCancelStatusText();
         ProgressDetail = string.Empty;
         ProgressFraction = 0;
     }
@@ -212,21 +300,31 @@ public sealed partial class UpdateSettingsViewModel : ViewModelBase, IDisposable
     private void OnOrchestratorProgressChanged(UpdateProgressReport report)
     {
         ProgressFraction = report.ProgressFraction;
-        StatusMessage = report.Message;
+
         if (report.DownloadDetail is not null)
         {
-            ProgressDetail = $"{report.DownloadDetail.CurrentFile} ({report.DownloadDetail.OverallPercent}%)";
+            StatusMessage = GetDownloadingStatusText();
+            ProgressDetail = string.Format(
+                CultureInfo.CurrentCulture,
+                L("settings.update.progress_download_detail_format", "{0} ({1}%)"),
+                report.DownloadDetail.CurrentFile,
+                report.DownloadDetail.OverallPercent);
         }
         else if (report.InstallDetail is not null)
         {
+            StatusMessage = GetInstallingStatusText();
             ProgressDetail = report.InstallDetail.CurrentFile ?? report.InstallDetail.Message;
         }
         else
         {
+            StatusMessage = string.IsNullOrWhiteSpace(report.Message)
+                ? GetPhaseStatusText(CurrentPhase)
+                : report.Message;
             ProgressDetail = string.Empty;
         }
     }
 
+
     private void LoadPreferenceState()
     {
         var state = _settingsFacade.Update.Get();
@@ -234,6 +332,101 @@ public sealed partial class UpdateSettingsViewModel : ViewModelBase, IDisposable
         SelectedUpdateSourceValue = state.UpdateDownloadSource;
         SelectedUpdateModeValue = state.UpdateMode;
         DownloadThreadsSliderValue = UpdateSettingsValues.NormalizeDownloadThreads(state.UpdateDownloadThreads);
+
+        SyncComboBoxSelections();
+    }
+
+    private void SyncComboBoxSelections()
+    {
+        SelectedChannel = ChannelOptions.FirstOrDefault(o => o.Value == SelectedUpdateChannelValue)
+            ?? ChannelOptions.FirstOrDefault();
+        SelectedSource = SourceOptions.FirstOrDefault(o => o.Value == SelectedUpdateSourceValue)
+            ?? SourceOptions.FirstOrDefault();
+        SelectedMode = ModeOptions.FirstOrDefault(o => o.Value == SelectedUpdateModeValue)
+            ?? ModeOptions.FirstOrDefault();
+    }
+
+    private void RefreshLocalizedText()
+    {
+        PageTitle = L("settings.update.title", "Update");
+        PageDescription = L("settings.update.description", "Check releases, choose the update channel and download source, and control how updates are installed.");
+        StatusSectionHeader = L("settings.update.status_section_header", "Update Status");
+        CheckCardTitle = L("settings.update.check_card_title", "Check for Updates");
+        StatusCardTitle = L("settings.update.status_card_title", "Update Status");
+        StatusCardDescription = L("settings.update.status_card_description", "Check for updates, review release details, and continue with download or installation when a new version is available.");
+        ReleaseFactsTitle = L("settings.update.release_facts_title", "Release Facts");
+        ReleaseFactsDescription = L("settings.update.release_facts_description", "Keep the current version, published release, and update type visible without collapsing the layout while states change.");
+        ProgressTitle = L("settings.update.progress_title", "Progress");
+        ProgressDescription = L("settings.update.progress_description", "Watch download, installation, verification, and recovery progress here.");
+        ActionsTitle = L("settings.update.actions_title", "Actions");
+        ActionsDescription = L("settings.update.actions_description", "The buttons below stay in place while the update phase changes, so the page does not jump around.");
+        PreferencesTitle = L("settings.update.preferences_title", "Update Preferences");
+        PreferencesDescription = L("settings.update.preferences_description", "Choose the release channel, installer download source, installation behavior, and download parallelism.");
+
+        CurrentVersionLabel = L("settings.update.current_version_label", "Current Version");
+        LatestVersionLabel = L("settings.update.latest_version_label", "Latest Release");
+        PublishedAtLabel = L("settings.update.published_at_label", "Published At");
+        LastCheckedLabel = L("settings.update.last_checked_label", "Last Checked");
+        UpdateTypeLabel = L("settings.update.update_type_label", "Update Type");
+        ChannelLabel = L("settings.update.channel_label", "Update Channel");
+        SourceLabel = L("settings.update.source_label", "Download Source");
+        ModeLabel = L("settings.update.mode_label", "Update Mode");
+        DownloadThreadsLabel = L("settings.update.download_threads_label", "Download Threads");
+
+        UpdateAvailableBadgeText = L("settings.update.badge_available", "Update available");
+        PausedBadgeText = L("settings.update.badge_paused", "Paused");
+        PausedHintText = L("settings.update.paused_hint", "Paused. Resume to continue from the current state.");
+
+        CheckButtonText = L("settings.update.check_button_short", "Check");
+        DownloadButtonText = L("settings.update.download_button_short", "Download");
+        InstallButtonText = L("settings.update.install_button_short", "Install");
+        PauseButtonText = L("settings.update.pause_button_short", "Pause");
+        ResumeButtonText = L("settings.update.resume_button_short", "Resume");
+        RollbackButtonText = L("settings.update.rollback_button_short", "Rollback");
+        CancelButtonText = L("settings.update.cancel_button_short", "Cancel");
+
+        LastCheckedText = L("settings.update.last_checked_none", "Not checked yet.");
+
+        ChannelOptions = CreateChannelOptions();
+        SourceOptions = CreateSourceOptions();
+        ModeOptions = CreateModeOptions();
+        OnPropertyChanged(nameof(ChannelOptions));
+        OnPropertyChanged(nameof(SourceOptions));
+        OnPropertyChanged(nameof(ModeOptions));
+
+        SyncComboBoxSelections();
+
+        OnPropertyChanged(nameof(PhaseText));
+        OnPropertyChanged(nameof(LatestVersionDisplayText));
+    }
+
+    private IReadOnlyList<SelectionOption> CreateChannelOptions()
+    {
+        return
+        [
+            new(UpdateSettingsValues.ChannelStable, L("settings.update.channel_stable", "Stable")),
+            new(UpdateSettingsValues.ChannelPreview, L("settings.update.channel_preview", "Preview"))
+        ];
+    }
+
+    private IReadOnlyList<SelectionOption> CreateSourceOptions()
+    {
+        return
+        [
+            new(UpdateSettingsValues.DownloadSourcePlonds, L("settings.update.source_plonds", "Plonds CDN")),
+            new(UpdateSettingsValues.DownloadSourceGitHub, L("settings.update.source_github", "GitHub")),
+            new(UpdateSettingsValues.DownloadSourceGhProxy, L("settings.update.source_gh_proxy", "GitHub Proxy"))
+        ];
+    }
+
+    private IReadOnlyList<SelectionOption> CreateModeOptions()
+    {
+        return
+        [
+            new(UpdateSettingsValues.ModeManual, L("settings.update.mode_manual", "Manual")),
+            new(UpdateSettingsValues.ModeDownloadThenConfirm, L("settings.update.mode_confirm", "Download then Confirm")),
+            new(UpdateSettingsValues.ModeSilentOnExit, L("settings.update.mode_silent", "Silent on Exit"))
+        ];
     }
 
     private void SavePreferenceState()
@@ -248,6 +441,116 @@ public sealed partial class UpdateSettingsViewModel : ViewModelBase, IDisposable
         });
     }
 
+    private string GetPhaseText(UpdatePhase phase)
+    {
+        return phase switch
+        {
+            UpdatePhase.Idle => L("settings.update.phase_idle", "Ready"),
+            UpdatePhase.Checking => L("settings.update.phase_checking", "Checking"),
+            UpdatePhase.Checked => L("settings.update.phase_checked", "Checked"),
+            UpdatePhase.Downloading => L("settings.update.phase_downloading", "Downloading"),
+            UpdatePhase.PausedDownloading => L("settings.update.phase_paused_download", "Paused (Download)"),
+            UpdatePhase.Downloaded => L("settings.update.phase_downloaded", "Downloaded"),
+            UpdatePhase.Installing => L("settings.update.phase_installing", "Installing"),
+            UpdatePhase.PausedInstalling => L("settings.update.phase_paused_install", "Paused (Install)"),
+            UpdatePhase.Installed => L("settings.update.phase_installed", "Installed"),
+            UpdatePhase.Verifying => L("settings.update.phase_verifying", "Verifying"),
+            UpdatePhase.Completed => L("settings.update.phase_completed", "Completed"),
+            UpdatePhase.Failed => L("settings.update.phase_failed", "Failed"),
+            UpdatePhase.Recovering => L("settings.update.phase_recovering", "Recovering"),
+            UpdatePhase.RollingBack => L("settings.update.phase_rolling_back", "Rolling Back"),
+            UpdatePhase.RolledBack => L("settings.update.phase_rolled_back", "Rolled Back"),
+            _ => phase.ToString()
+        };
+    }
+
+
+    private string GetPhaseStatusText(UpdatePhase phase)
+    {
+        return phase switch
+        {
+            UpdatePhase.Checking => GetCheckingStatusText(),
+            UpdatePhase.Downloading => GetDownloadingStatusText(),
+            UpdatePhase.PausedDownloading or UpdatePhase.PausedInstalling => GetPausedStatusText(),
+            UpdatePhase.Installing => GetInstallingStatusText(),
+            UpdatePhase.Recovering => GetRecoveringStatusText(),
+            UpdatePhase.RollingBack => GetRollingBackStatusText(),
+            UpdatePhase.Completed => GetInstallSuccessStatusText(),
+            UpdatePhase.Installed => GetInstallSuccessStatusText(),
+            UpdatePhase.RolledBack => GetRollbackCompleteStatusText(),
+            UpdatePhase.Failed => L("settings.update.status_failed", "The update failed."),
+            _ => GetReadyStatusText()
+        };
+    }
+
+    private string GetReadyStatusText()
+        => L("settings.update.status_ready", "Ready to check for updates.");
+
+    private string GetCheckingStatusText()
+        => L("settings.update.status_checking", "Checking GitHub releases...");
+
+    private string GetUpToDateStatusText()
+        => L("settings.update.status_up_to_date", "You are already on the latest version.");
+
+    private string GetUpdateAvailableStatusText(string version)
+        => string.Format(CultureInfo.CurrentCulture, L("settings.update.status_available_format", "New version {0} is available. Click Download and Install."), version);
+
+    private string GetDownloadingStatusText()
+        => L("settings.update.status_downloading", "Downloading installer...");
+
+    private string GetDownloadCompleteStatusText()
+        => L("settings.update.status_launching_installer", "Download complete. Launching installer...");
+
+    private string GetDownloadFailedStatusText()
+        => L("settings.update.status_download_failed", "Download failed.");
+
+    private string GetResumeStateInvalidStatusText()
+        => L("settings.update.status_resume_state_invalid", "The resume state is invalid. Cancel and redownload, then try again.");
+
+    private string GetInstallingStatusText()
+        => L("settings.update.status_installing", "Installing update...");
+
+    private string GetInstallSuccessStatusText()
+        => L("settings.update.status_installed", "Update installed successfully.");
+
+    private string GetInstallFailedStatusText()
+        => L("settings.update.status_install_failed", "Install failed.");
+
+    private string GetRollingBackStatusText()
+        => L("settings.update.status_rolling_back", "Rolling back...");
+
+    private string GetRollbackCompleteStatusText()
+        => L("settings.update.status_rolled_back", "Rollback complete.");
+
+    private string GetPausedStatusText()
+        => L("settings.update.status_paused", "Update paused.");
+
+    private string GetResumingStatusText()
+        => L("settings.update.status_resuming", "Resuming update...");
+
+    private string GetResumeCompleteStatusText()
+        => L("settings.update.status_resumed", "Resume complete.");
+
+    private string GetResumeFailedStatusText()
+        => L("settings.update.status_resume_failed", "Resume failed.");
+
+    private string GetRecoveringStatusText()
+        => L("settings.update.status_recovering", "Recovering installation...");
+
+    private string GetCancelStatusText()
+        => L("settings.update.status_canceled", "Update canceled.");
+
+    private string GetUpdateTypeText(UpdatePayloadKind? payloadKind)
+        => payloadKind switch
+        {
+            UpdatePayloadKind.DeltaPlonds or UpdatePayloadKind.DeltaLegacy => L("settings.update.type_delta", "Incremental Update"),
+            UpdatePayloadKind.FullInstaller => L("settings.update.type_full", "Full Installer"),
+            _ => string.Empty
+        };
+
+    private string L(string key, string fallback)
+        => _localizationService.GetString(_languageCode, key, fallback);
+
     public void Dispose()
     {
         if (_disposed)
diff --git a/LanMountainDesktop/ViewModels/WeatherSettingsPageViewModel.cs b/LanMountainDesktop/ViewModels/WeatherSettingsPageViewModel.cs
index 29c621c..fdd3a37 100644
--- a/LanMountainDesktop/ViewModels/WeatherSettingsPageViewModel.cs
+++ b/LanMountainDesktop/ViewModels/WeatherSettingsPageViewModel.cs
@@ -10,7 +10,6 @@ using CommunityToolkit.Mvvm.Input;
 using LanMountainDesktop.Models;
 using LanMountainDesktop.Services;
 using LanMountainDesktop.Services.Settings;
-using LanMountainDesktop.Views.Components;
 
 namespace LanMountainDesktop.ViewModels;
 
@@ -445,22 +444,14 @@ public sealed partial class WeatherSettingsPageViewModel : ViewModelBase
             }
 
             var snapshot = result.Data;
-            var isNight = snapshot.Current.IsDaylight.HasValue
-                ? !snapshot.Current.IsDaylight.Value
-                : _settingsFacade.Theme.Get().IsNightMode;
-            var preview = XiaomiWeatherVisualResolver.Resolve(
-                snapshot.Current.WeatherText,
-                snapshot.Current.WeatherCode,
-                isNight,
-                _languageCode);
-            PreviewIcon = HyperOS3WeatherAssetLoader.LoadImage(preview.PrimaryIconAsset);
+            PreviewIcon = null;
             PreviewLocation = string.IsNullOrWhiteSpace(snapshot.LocationName)
                 ? state.LocationName
                 : snapshot.LocationName!;
             PreviewTemperature = snapshot.Current.TemperatureC.HasValue
                 ? string.Format(CultureInfo.InvariantCulture, "{0:0.#}°C", snapshot.Current.TemperatureC.Value)
                 : "--";
-            PreviewCondition = preview.DisplayText;
+            PreviewCondition = ResolveWeatherDisplayText(snapshot.Current.WeatherText, snapshot.Current.WeatherCode);
 
             var updatedAt = (snapshot.ObservationTime ?? snapshot.FetchedAt).ToLocalTime();
             PreviewUpdated = string.Format(
@@ -523,18 +514,12 @@ public sealed partial class WeatherSettingsPageViewModel : ViewModelBase
         UpdateModeVisibility();
         UpdateCurrentLocationSummary();
 
-        var preview = XiaomiWeatherVisualResolver.Resolve(
-            "Partly cloudy",
-            4,
-            isNight: false,
-            _languageCode);
-
         SearchStatus = "2 sample locations are shown for design preview.";
         LocationActionStatus = "Using mocked Windows location support in design mode.";
-        PreviewIcon = HyperOS3WeatherAssetLoader.LoadImage(preview.PrimaryIconAsset);
+        PreviewIcon = null;
         PreviewLocation = previewLocation.Name;
         PreviewTemperature = "24 deg C";
-        PreviewCondition = preview.DisplayText;
+        PreviewCondition = ResolveWeatherDisplayText("Partly cloudy", 4);
         PreviewUpdated = "Updated 09:42";
         PreviewStatus = "Preview data is mocked for Avalonia design mode.";
     }
@@ -713,6 +698,17 @@ public sealed partial class WeatherSettingsPageViewModel : ViewModelBase
         return _localizationService.GetString(_languageCode, key, fallback);
     }
 
+    private string ResolveWeatherDisplayText(string? weatherText, int? weatherCode)
+    {
+        if (!string.IsNullOrWhiteSpace(weatherText))
+        {
+            return weatherText.Trim();
+        }
+
+        return XiaomiWeatherCodeMapper.ResolveDisplayText(weatherCode, _languageCode)
+            ?? L("settings.weather.preview_unknown", "Unknown");
+    }
+
     private CultureInfo ResolveCulture()
     {
         try
diff --git a/LanMountainDesktop/Views/Components/ClassScheduleWidget.axaml b/LanMountainDesktop/Views/Components/ClassScheduleWidget.axaml
index 1593a58..596e1b5 100644
--- a/LanMountainDesktop/Views/Components/ClassScheduleWidget.axaml
+++ b/LanMountainDesktop/Views/Components/ClassScheduleWidget.axaml
@@ -6,14 +6,15 @@
             BorderBrush="{DynamicResource AdaptiveButtonBorderBrush}"
             BorderThickness="1"
             CornerRadius="{DynamicResource DesignCornerRadiusComponent}"
-            Padding="14,12">
+            Padding="0">
         <Grid x:Name="LayoutGrid"
               RowDefinitions="Auto,*">
             <Grid x:Name="HeaderGrid"
-                  ColumnDefinitions="*,Auto">
+                  ColumnDefinitions="Auto,*,Auto"
+                  Margin="16,12,16,8">
                 <StackPanel x:Name="DateGroup"
                             Orientation="Horizontal"
-                            VerticalAlignment="Top">
+                            VerticalAlignment="Center">
                     <TextBlock x:Name="MonthTextBlock"
                                Text="7"
                                FontWeight="Bold"
@@ -27,21 +28,24 @@
                                TextTrimming="CharacterEllipsis" />
                 </StackPanel>
 
-                <StackPanel x:Name="MetaStack"
-                            Grid.Column="1"
-                            HorizontalAlignment="Right"
-                            VerticalAlignment="Top">
-                    <TextBlock x:Name="WeekdayTextBlock"
-                               Text="周一"
-                               TextAlignment="Right"
-                               FontWeight="SemiBold"
-                               TextTrimming="CharacterEllipsis" />
+                <TextBlock x:Name="WeekdayTextBlock"
+                           Grid.Column="1"
+                           Text="周一"
+                           HorizontalAlignment="Center"
+                           VerticalAlignment="Center"
+                           FontWeight="SemiBold"
+                           TextTrimming="CharacterEllipsis" />
+
+                <Border x:Name="ClassCountBadge"
+                        Grid.Column="2"
+                        VerticalAlignment="Center"
+                        Padding="8,3"
+                        CornerRadius="{DynamicResource DesignCornerRadiusMicro}">
                     <TextBlock x:Name="ClassCountTextBlock"
                                Text="0节课"
-                               TextAlignment="Right"
                                FontWeight="SemiBold"
                                TextTrimming="CharacterEllipsis" />
-                </StackPanel>
+                </Border>
             </Grid>
 
             <Grid Grid.Row="1">
diff --git a/LanMountainDesktop/Views/Components/ClassScheduleWidget.axaml.cs b/LanMountainDesktop/Views/Components/ClassScheduleWidget.axaml.cs
index 424240d..dcf6457 100644
--- a/LanMountainDesktop/Views/Components/ClassScheduleWidget.axaml.cs
+++ b/LanMountainDesktop/Views/Components/ClassScheduleWidget.axaml.cs
@@ -22,7 +22,10 @@ public partial class ClassScheduleWidget : UserControl, IDesktopComponentWidget,
         string Name,
         string TimeRange,
         string Detail,
-        bool IsCurrent);
+        bool IsCurrent,
+        TimeSpan StartTime,
+        TimeSpan EndTime,
+        double Progress);
 
     private readonly DispatcherTimer _refreshTimer = new()
     {
@@ -227,18 +230,11 @@ public partial class ClassScheduleWidget : UserControl, IDesktopComponentWidget,
         for (var i = 0; i < _courseItems.Count; i++)
         {
             var item = _courseItems[i];
-            var timeParts = item.TimeRange.Split('-');
-            if (timeParts.Length != 2) continue;
-
-            if (TimeSpan.TryParse(timeParts[0].Trim(), out var startTime) &&
-                TimeSpan.TryParse(timeParts[1].Trim(), out var endTime))
+            var shouldBeCurrent = now.TimeOfDay >= item.StartTime && now.TimeOfDay <= item.EndTime;
+            if (shouldBeCurrent != item.IsCurrent)
             {
-                var shouldBeCurrent = now.TimeOfDay >= startTime && now.TimeOfDay <= endTime;
-                if (shouldBeCurrent != item.IsCurrent)
-                {
-                    needsRender = true;
-                    break;
-                }
+                needsRender = true;
+                break;
             }
         }
 
@@ -522,11 +518,22 @@ public partial class ClassScheduleWidget : UserControl, IDesktopComponentWidget,
             var subjectName = ResolveSubjectName(snapshot, classInfo.SubjectId);
             var detail = ResolveSubjectDetail(snapshot, classInfo.SubjectId);
             var isCurrent = now.TimeOfDay >= slot.StartTime && now.TimeOfDay <= slot.EndTime;
+            var progress = 0.0;
+            if (isCurrent && slot.EndTime > slot.StartTime)
+            {
+                var elapsed = (now.TimeOfDay - slot.StartTime).TotalSeconds;
+                var total = (slot.EndTime - slot.StartTime).TotalSeconds;
+                progress = total > 0 ? Math.Clamp(elapsed / total, 0, 1) : 0;
+            }
+
             result.Add(new CourseItemViewModel(
                 Name: subjectName,
                 TimeRange: $"{FormatTime(slot.StartTime)}-{FormatTime(slot.EndTime)}",
                 Detail: detail,
-                IsCurrent: isCurrent));
+                IsCurrent: isCurrent,
+                StartTime: slot.StartTime,
+                EndTime: slot.EndTime,
+                Progress: progress));
         }
 
         return result;
@@ -674,173 +681,93 @@ public partial class ClassScheduleWidget : UserControl, IDesktopComponentWidget,
     {
         CourseListPanel.Children.Clear();
 
-        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);
-        var secondarySize = Math.Clamp(29 * scale, 10, 28);
-        var lineSpacing = Math.Clamp(4 * scale, 1.5, 8);
-        var itemPadding = new Thickness(
-            Math.Clamp(6 * scale, 3, 10),
-            Math.Clamp(4 * scale, 2, 8),
-            Math.Clamp(4 * scale, 2, 8),
-            Math.Clamp(4 * scale, 2, 8));
-
-        var primaryBrush = CreateBrush(_isNightVisual ? "#F9FBFF" : "#151821");
-        var secondaryBrush = CreateBrush(_isNightVisual ? "#848B99" : "#667084");
-        var currentBrush = useMonetColor
-            ? CreateBrush("#FF4FC3F7")
-            : CreateBrush("#FF4D5A");
-        var normalBulletBrush = CreateBrush(_isNightVisual ? "#B8BEC9" : "#9AA3B2");
+        var cardRadius = ComponentChromeCornerRadiusHelper.Small();
+        var timeFontSize = Math.Clamp(11 * scale, 8, 14);
+        var courseNameFontSize = Math.Clamp(14 * scale, 10, 18);
+        var detailFontSize = Math.Clamp(11 * scale, 8, 14);
+        var progressFontSize = Math.Clamp(10 * scale, 7, 12);
+        var cardPadding = new Thickness(
+            Math.Clamp(10 * scale, 6, 14),
+            Math.Clamp(8 * scale, 5, 12),
+            Math.Clamp(10 * scale, 6, 14),
+            Math.Clamp(8 * scale, 5, 12));
+        var timeColumnWidth = Math.Clamp(44 * scale, 30, 56);
+        var accentBarWidth = Math.Clamp(3 * scale, 2, 4);
+        var progressBarHeight = Math.Clamp(3 * scale, 2, 4);
 
         for (var i = 0; i < _courseItems.Count; i++)
         {
             var item = _courseItems[i];
-            var itemControls = CreateSingleItemControl(
+            var itemControl = CreateTimelineItemControl(
                 item,
                 scale,
-                bulletSize,
-                courseNameSize,
-                secondarySize,
-                lineSpacing,
-                itemPadding,
-                primaryBrush,
-                secondaryBrush,
-                item.IsCurrent ? currentBrush : normalBulletBrush);
-
-            CourseListPanel.Children.Add(itemControls);
+                cardRadius,
+                timeFontSize,
+                courseNameFontSize,
+                detailFontSize,
+                progressFontSize,
+                cardPadding,
+                timeColumnWidth,
+                accentBarWidth,
+                progressBarHeight);
+            CourseListPanel.Children.Add(itemControl);
         }
     }
 
-    private void IncrementalUpdateItems()
-    {
-        var useMonetColor = ComponentColorSchemeHelper.ShouldUseMonetColor(
-            _componentColorScheme,
-            ComponentColorSchemeHelper.GetCurrentGlobalThemeColorMode());
-
-        var currentBrush = useMonetColor
-            ? CreateBrush("#FF4FC3F7")
-            : CreateBrush("#FF4D5A");
-        var normalBulletBrush = CreateBrush(_isNightVisual ? "#B8BEC9" : "#9AA3B2");
-        var primaryBrush = CreateBrush(_isNightVisual ? "#F9FBFF" : "#151821");
-        var secondaryBrush = CreateBrush(_isNightVisual ? "#848B99" : "#667084");
-
-        for (var i = 0; i < _courseItems.Count && i < CourseListPanel.Children.Count; i++)
-        {
-            var item = _courseItems[i];
-            var existingBorder = CourseListPanel.Children[i] as Border;
-            if (existingBorder == null) continue;
-
-            var existingGrid = existingBorder.Child as Grid;
-            if (existingGrid == null || existingGrid.Children.Count < 2) continue;
-
-            var bulletBorder = existingGrid.Children[0] as Border;
-            var textStack = existingGrid.Children[1] as StackPanel;
-            if (bulletBorder == null || textStack == null || textStack.Children.Count < 3) continue;
-
-            var newBulletBrush = item.IsCurrent ? currentBrush : normalBulletBrush;
-            bulletBorder.Background = newBulletBrush;
-
-            var titleText = textStack.Children[0] as TextBlock;
-            var timeText = textStack.Children[1] as TextBlock;
-            var detailText = textStack.Children[2] as TextBlock;
-
-            if (titleText != null)
-            {
-                if (titleText.Text != item.Name)
-                {
-                    titleText.Text = item.Name;
-                }
-                titleText.Foreground = primaryBrush;
-            }
-
-            if (timeText != null)
-            {
-                if (timeText.Text != item.TimeRange)
-                {
-                    timeText.Text = item.TimeRange;
-                }
-                timeText.Foreground = secondaryBrush;
-            }
-
-            if (detailText != null)
-            {
-                if (detailText.Text != item.Detail)
-                {
-                    detailText.Text = item.Detail;
-                }
-                detailText.Foreground = secondaryBrush;
-            }
-        }
-    }
-
-    private void IncrementalUpdateCurrentCourseHighlight(int currentCourseIndex)
-    {
-        var useMonetColor = ComponentColorSchemeHelper.ShouldUseMonetColor(
-            _componentColorScheme,
-            ComponentColorSchemeHelper.GetCurrentGlobalThemeColorMode());
-
-        var currentBrush = useMonetColor
-            ? CreateBrush("#FF4FC3F7")
-            : CreateBrush("#FF4D5A");
-        var normalBulletBrush = CreateBrush(_isNightVisual ? "#B8BEC9" : "#9AA3B2");
-
-        for (var i = 0; i < CourseListPanel.Children.Count; i++)
-        {
-            var border = CourseListPanel.Children[i] as Border;
-            if (border == null) continue;
-
-            var grid = border.Child as Grid;
-            if (grid == null || grid.Children.Count < 2) continue;
-
-            var bulletBorder = grid.Children[0] as Border;
-            if (bulletBorder == null) continue;
-
-            bulletBorder.Background = i == currentCourseIndex ? currentBrush : normalBulletBrush;
-        }
-    }
-
-    private Border CreateSingleItemControl(
+    private Border CreateTimelineItemControl(
         CourseItemViewModel item,
         double scale,
-        double bulletSize,
-        double courseNameSize,
-        double secondarySize,
-        double lineSpacing,
-        Thickness itemPadding,
-        IBrush primaryBrush,
-        IBrush secondaryBrush,
-        IBrush bulletBrush)
+        double cardRadius,
+        double timeFontSize,
+        double courseNameFontSize,
+        double detailFontSize,
+        double progressFontSize,
+        Thickness cardPadding,
+        double timeColumnWidth,
+        double accentBarWidth,
+        double progressBarHeight)
     {
-        var bullet = new Border
+        var subjectBrush = SubjectColorService.ResolveForegroundBrush(item.Name, _isNightVisual);
+        var cardBackground = SubjectColorService.ResolveBackgroundBrush(item.Name, item.IsCurrent);
+        var secondaryBrush = CreateBrush(_isNightVisual ? "#848B99" : "#667084");
+        var timeBrush = CreateBrush(_isNightVisual ? "#6B7280" : "#9AA3B2");
+        var timeEndBrush = CreateBrush(_isNightVisual ? "#4B5563" : "#B8BEC9");
+
+        var startTimeText = new TextBlock
         {
-            Width = bulletSize,
-            Height = bulletSize,
-            CornerRadius = new CornerRadius(bulletSize * 0.5),
-            Background = bulletBrush,
-            VerticalAlignment = Avalonia.Layout.VerticalAlignment.Top,
-            Margin = new Thickness(0, Math.Clamp(8 * scale, 2, 12), 0, 0)
+            Text = FormatTime(item.StartTime),
+            FontSize = timeFontSize,
+            FontWeight = FontWeight.SemiBold,
+            Foreground = timeBrush,
+            HorizontalAlignment = Avalonia.Layout.HorizontalAlignment.Right,
+            TextTrimming = TextTrimming.CharacterEllipsis
         };
 
-        var titleText = new TextBlock
+        var endTimeText = new TextBlock
+        {
+            Text = FormatTime(item.EndTime),
+            FontSize = timeFontSize - 1,
+            FontWeight = FontWeight.Normal,
+            Foreground = timeEndBrush,
+            HorizontalAlignment = Avalonia.Layout.HorizontalAlignment.Right,
+            TextTrimming = TextTrimming.CharacterEllipsis
+        };
+
+        var timeColumn = new StackPanel
+        {
+            Spacing = Math.Clamp(2 * scale, 1, 4),
+            VerticalAlignment = Avalonia.Layout.VerticalAlignment.Center,
+            Width = timeColumnWidth,
+            Children = { startTimeText, endTimeText }
+        };
+
+        var courseNameText = new TextBlock
         {
             Text = item.Name,
-            FontSize = courseNameSize,
-            FontWeight = ToVariableWeight(Lerp(620, 780, Math.Clamp((scale - 0.60) / 1.2, 0, 1))),
-            Foreground = primaryBrush,
-            TextTrimming = TextTrimming.CharacterEllipsis,
-            TextWrapping = TextWrapping.NoWrap
-        };
-
-        var timeText = new TextBlock
-        {
-            Text = item.TimeRange,
-            FontSize = secondarySize,
-            FontWeight = ToVariableWeight(Lerp(520, 680, Math.Clamp((scale - 0.60) / 1.2, 0, 1))),
-            Foreground = secondaryBrush,
+            FontSize = courseNameFontSize,
+            FontWeight = ToVariableWeight(Lerp(650, 800, Math.Clamp((scale - 0.60) / 1.2, 0, 1))),
+            Foreground = subjectBrush,
             TextTrimming = TextTrimming.CharacterEllipsis,
             TextWrapping = TextWrapping.NoWrap
         };
@@ -848,31 +775,129 @@ public partial class ClassScheduleWidget : UserControl, IDesktopComponentWidget,
         var detailText = new TextBlock
         {
             Text = item.Detail,
-            FontSize = secondarySize,
-            FontWeight = ToVariableWeight(Lerp(500, 640, Math.Clamp((scale - 0.60) / 1.2, 0, 1))),
+            FontSize = detailFontSize,
+            FontWeight = ToVariableWeight(Lerp(450, 550, Math.Clamp((scale - 0.60) / 1.2, 0, 1))),
             Foreground = secondaryBrush,
             TextTrimming = TextTrimming.CharacterEllipsis,
             TextWrapping = TextWrapping.NoWrap
         };
 
-        var textStack = new StackPanel
+        var cardContent = new StackPanel
         {
-            Spacing = lineSpacing,
-            Children = { titleText, timeText, detailText }
+            Spacing = Math.Clamp(2 * scale, 1, 4)
+        };
+
+        cardContent.Children.Add(courseNameText);
+        cardContent.Children.Add(detailText);
+
+        if (item.IsCurrent && item.Progress > 0)
+        {
+            var progressTrack = new Border
+            {
+                Height = progressBarHeight,
+                CornerRadius = new CornerRadius(progressBarHeight * 0.5),
+                Background = CreateBrush(_isNightVisual ? "#1AFFFFFF" : "#0D000000"),
+                ClipToBounds = true,
+                Child = new Border
+                {
+                    Height = progressBarHeight,
+                    Width = Math.Max(progressBarHeight, Math.Clamp(item.Progress * 100, 0, 100) * 0.01 * 200),
+                    HorizontalAlignment = Avalonia.Layout.HorizontalAlignment.Left,
+                    CornerRadius = new CornerRadius(progressBarHeight * 0.5),
+                    Background = subjectBrush
+                }
+            };
+
+            var progressText = new TextBlock
+            {
+                Text = $"{(int)(item.Progress * 100)}%",
+                FontSize = progressFontSize,
+                FontWeight = FontWeight.SemiBold,
+                Foreground = subjectBrush,
+                HorizontalAlignment = Avalonia.Layout.HorizontalAlignment.Right
+            };
+
+            var progressRow = new Grid
+            {
+                ColumnDefinitions = new ColumnDefinitions("*,Auto"),
+                Margin = new Thickness(0, Math.Clamp(2 * scale, 1, 4), 0, 0)
+            };
+            progressRow.Children.Add(progressTrack);
+            progressRow.Children.Add(progressText);
+            Grid.SetColumn(progressText, 1);
+
+            cardContent.Children.Add(progressRow);
+        }
+
+        var cardInner = new Grid
+        {
+            ColumnDefinitions = new ColumnDefinitions($"{accentBarWidth},*")
+        };
+
+        if (item.IsCurrent)
+        {
+            var accentBar = new Border
+            {
+                Width = accentBarWidth,
+                CornerRadius = new CornerRadius(accentBarWidth * 0.5),
+                Background = subjectBrush,
+                Margin = new Thickness(0, 2, 0, 2)
+            };
+            cardInner.Children.Add(accentBar);
+
+            var contentWrapper = new StackPanel
+            {
+                Margin = new Thickness(Math.Clamp(6 * scale, 3, 8), 0, 0, 0),
+                Spacing = 0
+            };
+            foreach (var child in cardContent.Children.ToList())
+            {
+                cardContent.Children.Remove(child);
+                contentWrapper.Children.Add(child);
+            }
+            cardInner.Children.Add(contentWrapper);
+            Grid.SetColumn(contentWrapper, 1);
+        }
+        else
+        {
+            var contentWrapper = new StackPanel
+            {
+                Margin = new Thickness(Math.Clamp(8 * scale, 4, 12), 0, 0, 0),
+                Spacing = 0
+            };
+            foreach (var child in cardContent.Children.ToList())
+            {
+                cardContent.Children.Remove(child);
+                contentWrapper.Children.Add(child);
+            }
+            cardInner.Children.Add(contentWrapper);
+            Grid.SetColumn(contentWrapper, 1);
+        }
+
+        var cardBorder = new Border
+        {
+            CornerRadius = new CornerRadius(cardRadius),
+            Background = cardBackground,
+            Padding = cardPadding,
+            Child = cardInner
         };
 
         var itemGrid = new Grid
         {
-            ColumnDefinitions = new ColumnDefinitions("Auto,*"),
-            ColumnSpacing = Math.Clamp(10 * scale, 4, 14)
+            ColumnDefinitions = new ColumnDefinitions($"{timeColumnWidth},*"),
+            ColumnSpacing = Math.Clamp(6 * scale, 3, 10)
         };
-        itemGrid.Children.Add(bullet);
-        itemGrid.Children.Add(textStack);
-        Grid.SetColumn(textStack, 1);
+        itemGrid.Children.Add(timeColumn);
+        itemGrid.Children.Add(cardBorder);
+        Grid.SetColumn(cardBorder, 1);
 
         var itemBorder = new Border
         {
-            Padding = itemPadding,
+            Padding = new Thickness(
+                Math.Clamp(10 * scale, 6, 14),
+                Math.Clamp(2 * scale, 1, 4),
+                Math.Clamp(10 * scale, 6, 14),
+                Math.Clamp(2 * scale, 1, 4)),
             Background = Brushes.Transparent,
             Child = itemGrid
         };
@@ -880,15 +905,88 @@ public partial class ClassScheduleWidget : UserControl, IDesktopComponentWidget,
         return itemBorder;
     }
 
-    private int ResolveMaxVisibleItems(double scale)
+    private void IncrementalUpdateItems()
     {
-        var height = Bounds.Height > 1 ? Bounds.Height : _currentCellSize * 4;
-        var rootVerticalPadding = RootBorder.Padding.Top + RootBorder.Padding.Bottom;
-        var headerEstimatedHeight = Math.Clamp(100 * scale, 54, 140);
-        var itemEstimatedHeight = Math.Clamp(136 * scale, 72, 178);
-        var available = Math.Max(1, height - rootVerticalPadding - headerEstimatedHeight);
-        var count = (int)Math.Floor(available / Math.Max(1, itemEstimatedHeight));
-        return Math.Clamp(count, 1, 6);
+        for (var i = 0; i < _courseItems.Count && i < CourseListPanel.Children.Count; i++)
+        {
+            var item = _courseItems[i];
+            var outerBorder = CourseListPanel.Children[i] as Border;
+            if (outerBorder == null) continue;
+
+            var itemGrid = outerBorder.Child as Grid;
+            if (itemGrid == null || itemGrid.Children.Count < 2) continue;
+
+            var cardBorder = itemGrid.Children[1] as Border;
+            if (cardBorder == null) continue;
+
+            cardBorder.Background = SubjectColorService.ResolveBackgroundBrush(item.Name, item.IsCurrent);
+
+            var cardInner = cardBorder.Child as Grid;
+            if (cardInner == null) continue;
+
+            var contentPanel = cardInner.Children.OfType<StackPanel>().FirstOrDefault();
+            if (contentPanel == null) continue;
+
+            var subjectBrush = SubjectColorService.ResolveForegroundBrush(item.Name, _isNightVisual);
+            var secondaryBrush = CreateBrush(_isNightVisual ? "#848B99" : "#667084");
+
+            foreach (var child in contentPanel.Children)
+            {
+                if (child is TextBlock tb)
+                {
+                    if (contentPanel.Children.IndexOf(tb) == 0)
+                    {
+                        if (tb.Text != item.Name) tb.Text = item.Name;
+                        tb.Foreground = subjectBrush;
+                    }
+                    else if (contentPanel.Children.IndexOf(tb) == 1)
+                    {
+                        if (tb.Text != item.Detail) tb.Text = item.Detail;
+                        tb.Foreground = secondaryBrush;
+                    }
+                }
+            }
+
+            var accentBar = cardInner.Children.OfType<Border>().FirstOrDefault(b => b.Width > 0 && b.Width < 10);
+            if (accentBar != null)
+            {
+                accentBar.Background = subjectBrush;
+                accentBar.IsVisible = item.IsCurrent;
+            }
+        }
+    }
+
+    private void IncrementalUpdateCurrentCourseHighlight(int currentCourseIndex)
+    {
+        for (var i = 0; i < CourseListPanel.Children.Count; i++)
+        {
+            var outerBorder = CourseListPanel.Children[i] as Border;
+            if (outerBorder == null) continue;
+
+            var itemGrid = outerBorder.Child as Grid;
+            if (itemGrid == null || itemGrid.Children.Count < 2) continue;
+
+            var cardBorder = itemGrid.Children[1] as Border;
+            if (cardBorder == null) continue;
+
+            var item = i < _courseItems.Count ? _courseItems[i] : null;
+            if (item == null) continue;
+
+            cardBorder.Background = SubjectColorService.ResolveBackgroundBrush(item.Name, i == currentCourseIndex);
+
+            var cardInner = cardBorder.Child as Grid;
+            if (cardInner == null) continue;
+
+            var accentBar = cardInner.Children.OfType<Border>().FirstOrDefault(b => b.Width > 0 && b.Width < 10);
+            if (accentBar != null)
+            {
+                accentBar.IsVisible = i == currentCourseIndex;
+                if (i == currentCourseIndex)
+                {
+                    accentBar.Background = SubjectColorService.ResolveForegroundBrush(item.Name, _isNightVisual);
+                }
+            }
+        }
     }
 
     private void ApplyAdaptiveLayout()
@@ -915,38 +1013,34 @@ public partial class ClassScheduleWidget : UserControl, IDesktopComponentWidget,
             : CreateGradientBrush("#F7F8FC", "#ECEFF6");
         RootBorder.BorderBrush = CreateBrush(_isNightVisual ? "#24FFFFFF" : "#15000000");
 
-        var rootPadding = new Thickness(
+        var headerPadding = new Thickness(
             ComponentChromeCornerRadiusHelper.SafeValue(16 * scale, 10, 24),
-            ComponentChromeCornerRadiusHelper.SafeValue(14 * scale, 9, 20),
+            ComponentChromeCornerRadiusHelper.SafeValue(12 * scale, 8, 16),
             ComponentChromeCornerRadiusHelper.SafeValue(16 * scale, 10, 24),
-            ComponentChromeCornerRadiusHelper.SafeValue(14 * scale, 8, 20));
-        RootBorder.Padding = rootPadding;
+            ComponentChromeCornerRadiusHelper.SafeValue(8 * scale, 4, 12));
+        HeaderGrid.Margin = headerPadding;
 
-        LayoutGrid.RowSpacing = Math.Clamp(14 * scale, 6, 20);
-        HeaderGrid.ColumnSpacing = Math.Clamp(10 * scale, 4, 16);
+        HeaderGrid.ColumnSpacing = Math.Clamp(8 * scale, 4, 14);
         DateGroup.Spacing = Math.Clamp(1.5 * scale, 0.5, 3);
-        MetaStack.Spacing = Math.Clamp(6 * scale, 3, 10);
-        CourseListPanel.Spacing = Math.Clamp(6 * scale, 3, 10);
+        CourseListPanel.Spacing = Math.Clamp(2 * scale, 0, 6);
 
-        var dateFontByScale = Math.Clamp(66 * scale, 26, 82);
-        var weekdayFontByScale = Math.Clamp(34 * scale, 13, 32);
-        var classCountFontByScale = Math.Clamp(40 * scale, 14, 36);
+        var dateFontByScale = Math.Clamp(28 * scale, 14, 36);
+        var weekdayFontByScale = Math.Clamp(14 * scale, 10, 18);
+        var classCountFontByScale = Math.Clamp(12 * scale, 9, 15);
 
-        // 宽度感知：当头部内容总需求超过可用宽度时，按比例缩小日期字体
-        var availableWidth = Math.Max(1, Bounds.Width - rootPadding.Left - rootPadding.Right);
+        var availableWidth = Math.Max(1, Bounds.Width - headerPadding.Left - headerPadding.Right);
         var dateGroupEstimatedWidth = dateFontByScale * 0.6 * 3 + DateGroup.Spacing * 2;
-        var metaStackEstimatedWidth = classCountFontByScale * 0.6 * 4 + MetaStack.Spacing;
-        var headerColumnSpacing = Math.Clamp(10 * scale, 4, 16);
-        var totalHeaderNeed = dateGroupEstimatedWidth + headerColumnSpacing + metaStackEstimatedWidth;
+        var badgeEstimatedWidth = classCountFontByScale * 0.6 * 5 + 16;
+        var headerColumnSpacing = HeaderGrid.ColumnSpacing;
+        var totalHeaderNeed = dateGroupEstimatedWidth + headerColumnSpacing + badgeEstimatedWidth + weekdayFontByScale * 2;
 
         var dateFont = dateFontByScale;
         if (totalHeaderNeed > availableWidth)
         {
             var shrinkRatio = availableWidth / totalHeaderNeed;
-            dateFont = Math.Max(20, dateFontByScale * shrinkRatio);
+            dateFont = Math.Max(14, dateFontByScale * shrinkRatio);
         }
 
-        // 为 HeaderGrid 左列设置最小宽度，防止被压缩至零
         var minDateColumnWidth = dateFont * 0.6 * 3 + DateGroup.Spacing * 2;
         HeaderGrid.ColumnDefinitions[0].MinWidth = minDateColumnWidth;
 
@@ -958,15 +1052,24 @@ public partial class ClassScheduleWidget : UserControl, IDesktopComponentWidget,
         DayTextBlock.Foreground = CreateBrush(_isNightVisual ? "#F8FAFF" : "#131722");
         SlashTextBlock.Foreground = slashBrush;
         WeekdayTextBlock.Foreground = CreateBrush(_isNightVisual ? "#C6CBD5" : "#4B5463");
-        ClassCountTextBlock.Foreground = CreateBrush(_isNightVisual ? "#8D95A4" : "#738095");
         StatusTextBlock.Foreground = CreateBrush(_isNightVisual ? "#9AA2B1" : "#4B5565");
 
         WeekdayTextBlock.FontSize = weekdayFontByScale;
-        ClassCountTextBlock.FontSize = classCountFontByScale;
-        StatusTextBlock.FontSize = Math.Clamp(30 * scale, 12, 30);
-
         WeekdayTextBlock.FontWeight = ToVariableWeight(Lerp(560, 700, Math.Clamp((scale - 0.60) / 1.2, 0, 1)));
+
+        ClassCountTextBlock.FontSize = classCountFontByScale;
         ClassCountTextBlock.FontWeight = ToVariableWeight(Lerp(560, 680, Math.Clamp((scale - 0.60) / 1.2, 0, 1)));
+
+        var badgeBrush = useMonetColor
+            ? CreateBrush(_isNightVisual ? "#1A4FC3F7" : "#124FC3F7")
+            : CreateBrush(_isNightVisual ? "#1AFF4D5A" : "#12FF4D5A");
+        ClassCountBadge.Background = badgeBrush;
+        ClassCountBadge.CornerRadius = new CornerRadius(ComponentChromeCornerRadiusHelper.Micro());
+        ClassCountTextBlock.Foreground = useMonetColor
+            ? CreateBrush("#FF4FC3F7")
+            : CreateBrush("#FF4D5A");
+
+        StatusTextBlock.FontSize = Math.Clamp(14 * scale, 10, 18);
     }
 
     private static string FormatTime(TimeSpan time)
diff --git a/LanMountainDesktop/Views/Components/DesktopComponentRuntimeRegistry.cs b/LanMountainDesktop/Views/Components/DesktopComponentRuntimeRegistry.cs
index 77002a0..e80bbf0 100644
--- a/LanMountainDesktop/Views/Components/DesktopComponentRuntimeRegistry.cs
+++ b/LanMountainDesktop/Views/Components/DesktopComponentRuntimeRegistry.cs
@@ -332,10 +332,6 @@ public sealed class DesktopComponentRuntimeRegistry
                     BuiltInComponentIds.DesktopClock,
                     "component.desktop_clock",
                     () => new AnalogClockWidget()),
-                new DesktopComponentRuntimeRegistration(
-                    BuiltInComponentIds.DesktopWeatherClock,
-                    "component.weather_clock",
-                    () => new WeatherClockWidget()),
                 new DesktopComponentRuntimeRegistration(
                     BuiltInComponentIds.DesktopWorldClock,
                     "component.world_clock",
@@ -344,22 +340,6 @@ public sealed class DesktopComponentRuntimeRegistry
                     BuiltInComponentIds.DesktopTimer,
                     "component.desktop_timer",
                     () => new TimerWidget()),
-                new DesktopComponentRuntimeRegistration(
-                    BuiltInComponentIds.DesktopWeather,
-                    "component.desktop_weather",
-                    () => new WeatherWidget()),
-                new DesktopComponentRuntimeRegistration(
-                    BuiltInComponentIds.DesktopHourlyWeather,
-                    "component.hourly_weather",
-                    () => new HourlyWeatherWidget()),
-                new DesktopComponentRuntimeRegistration(
-                    BuiltInComponentIds.DesktopMultiDayWeather,
-                    "component.multiday_weather",
-                    () => new MultiDayWeatherWidget()),
-                new DesktopComponentRuntimeRegistration(
-                    BuiltInComponentIds.DesktopExtendedWeather,
-                    "component.extended_weather",
-                    () => new ExtendedWeatherWidget()),
                 new DesktopComponentRuntimeRegistration(
                     BuiltInComponentIds.DesktopClassSchedule,
                     "component.class_schedule",
diff --git a/LanMountainDesktop/Views/Components/ExtendedWeatherWidget.axaml b/LanMountainDesktop/Views/Components/ExtendedWeatherWidget.axaml
deleted file mode 100644
index 167f6e2..0000000
--- a/LanMountainDesktop/Views/Components/ExtendedWeatherWidget.axaml
+++ /dev/null
@@ -1,250 +0,0 @@
-<UserControl xmlns="https://github.com/avaloniaui"
-             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
-             xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
-             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
-             mc:Ignorable="d"
-             d:DesignWidth="640"
-             d:DesignHeight="640"
-             x:Class="LanMountainDesktop.Views.Components.ExtendedWeatherWidget">
-
-    <Border x:Name="RootBorder"
-            CornerRadius="{DynamicResource DesignCornerRadiusComponent}"
-            ClipToBounds="True"
-            Background="#6B7B8F">
-        <Grid>
-            <Border x:Name="BackgroundImageLayer"
-                    CornerRadius="{DynamicResource DesignCornerRadiusComponent}"
-                    ClipToBounds="True" />
-
-            <Border x:Name="BackgroundMotionLayer"
-                    CornerRadius="{DynamicResource DesignCornerRadiusComponent}"
-                    ClipToBounds="True"
-                    Opacity="0.26"
-                    RenderTransformOrigin="0.5,0.5">
-                <Border.RenderTransform>
-                    <TransformGroup>
-                        <ScaleTransform ScaleX="1.07"
-                                        ScaleY="1.07" />
-                        <TranslateTransform />
-                    </TransformGroup>
-                </Border.RenderTransform>
-            </Border>
-
-            <Border x:Name="BackgroundTintLayer"
-                    CornerRadius="{DynamicResource DesignCornerRadiusComponent}"
-                    ClipToBounds="True"
-                    Opacity="0.12" />
-
-            <Border x:Name="BackgroundLightLayer"
-                    CornerRadius="{DynamicResource DesignCornerRadiusComponent}"
-                    ClipToBounds="True"
-                    Opacity="0.54">
-                <Border.Background>
-                    <LinearGradientBrush StartPoint="0,0"
-                                         EndPoint="1,1">
-                        <GradientStop Color="#45FFFFFF"
-                                      Offset="0" />
-                        <GradientStop Color="#16FFFFFF"
-                                      Offset="0.34" />
-                        <GradientStop Color="#00000000"
-                                      Offset="0.66" />
-                    </LinearGradientBrush>
-                </Border.Background>
-            </Border>
-
-            <Border x:Name="BackgroundShadeLayer"
-                    CornerRadius="{DynamicResource DesignCornerRadiusComponent}"
-                    ClipToBounds="True"
-                    Opacity="0.70">
-                <Border.Background>
-                    <LinearGradientBrush StartPoint="0,0"
-                                         EndPoint="0,1">
-                        <GradientStop Color="#00000000"
-                                      Offset="0.40" />
-                        <GradientStop Color="#1A000000"
-                                      Offset="1" />
-                    </LinearGradientBrush>
-                </Border.Background>
-            </Border>
-
-            <Canvas x:Name="ParticleLayer"
-                    IsHitTestVisible="False"
-                    ClipToBounds="True" />
-
-            <Border x:Name="ContentPaddingBorder"
-                    Padding="24,20"
-                    Background="Transparent">
-                <Grid x:Name="LayoutRoot"
-                      RowDefinitions="Auto,Auto,Auto,*">
-                    <Grid x:Name="SummaryGrid"
-                          Grid.Row="0"
-                          ColumnDefinitions="Auto,*,Auto"
-                          ColumnSpacing="16">
-                        <TextBlock x:Name="TemperatureTextBlock"
-                                   Grid.Column="0"
-                                   Text="7°"
-                                   FontSize="64"
-                                   FontWeight="Light"
-                                   VerticalAlignment="Center"
-                                   Margin="0,-2,0,0"
-                                   TextTrimming="None"
-                                   MaxLines="1" />
-
-                        <Grid x:Name="SummaryInfoGrid"
-                              Grid.Column="1"
-                              VerticalAlignment="Center"
-                              Margin="2,0,0,0"
-                              RowDefinitions="Auto,Auto"
-                              RowSpacing="2">
-                            <StackPanel x:Name="BottomInfoStack"
-                                        Grid.Row="0"
-                                        Orientation="Horizontal"
-                                        Spacing="3"
-                                        Margin="0,0,0,1"
-                                        VerticalAlignment="Center">
-                                <Border x:Name="CityInfoBadge"
-                                        Background="Transparent"
-                                        CornerRadius="0"
-                                        Padding="0">
-                                    <TextBlock x:Name="CityTextBlock"
-                                               Text="北京"
-                                               FontSize="18"
-                                               FontWeight="SemiBold"
-                                               TextAlignment="Left"
-                                               TextTrimming="CharacterEllipsis"
-                                               MaxLines="1" />
-                                </Border>
-                            </StackPanel>
-
-                            <Border x:Name="ConditionInfoBadge"
-                                    Grid.Row="1"
-                                    Background="Transparent"
-                                    CornerRadius="0"
-                                    Padding="0"
-                                    Margin="0">
-                                <StackPanel x:Name="ConditionRangeStack"
-                                            Orientation="Horizontal"
-                                            VerticalAlignment="Center"
-                                            Spacing="9">
-                                    <TextBlock x:Name="ConditionTextBlock"
-                                               Text="雾"
-                                               FontSize="20"
-                                               FontWeight="SemiBold"
-                                               TextAlignment="Left"
-                                               TextTrimming="CharacterEllipsis"
-                                               MaxLines="1" />
-                                    <TextBlock x:Name="RangeTextBlock"
-                                               Text="11°/4°"
-                                               FontSize="20"
-                                               FontWeight="SemiBold"
-                                               TextAlignment="Left"
-                                               TextTrimming="CharacterEllipsis"
-                                               MaxLines="1"
-                                               Opacity="0.92" />
-                                </StackPanel>
-                            </Border>
-                        </Grid>
-
-                        <Image x:Name="WeatherIconImage"
-                               Grid.Column="2"
-                               Width="72"
-                               Height="72"
-                               HorizontalAlignment="Right"
-                               VerticalAlignment="Center"
-                               Stretch="Uniform" />
-                    </Grid>
-
-                    <Border x:Name="HourlyPanelBorder"
-                            Grid.Row="1"
-                            Background="Transparent"
-                            CornerRadius="0"
-                            ClipToBounds="True"
-                            Padding="0,2,0,0"
-                            Margin="0,10,0,0">
-                        <Grid x:Name="HourlyGrid"
-                              ColumnDefinitions="*,*,*,*,*,*"
-                              ColumnSpacing="4">
-                            <StackPanel Grid.Column="0" HorizontalAlignment="Center" VerticalAlignment="Center" Spacing="2">
-                                <TextBlock x:Name="HourlyTemp0" Text="7°" FontSize="16" FontWeight="SemiBold" HorizontalAlignment="Center" />
-                                <Image x:Name="HourlyIcon0" Width="26" Height="26" HorizontalAlignment="Center" Stretch="Uniform" />
-                                <TextBlock x:Name="HourlyTime0" Text="15:00" FontSize="12" FontWeight="Medium" HorizontalAlignment="Center" Opacity="0.82" />
-                            </StackPanel>
-                            <StackPanel Grid.Column="1" HorizontalAlignment="Center" VerticalAlignment="Center" Spacing="2">
-                                <TextBlock x:Name="HourlyTemp1" Text="7°" FontSize="16" FontWeight="SemiBold" HorizontalAlignment="Center" />
-                                <Image x:Name="HourlyIcon1" Width="26" Height="26" HorizontalAlignment="Center" Stretch="Uniform" />
-                                <TextBlock x:Name="HourlyTime1" Text="16:00" FontSize="12" FontWeight="Medium" HorizontalAlignment="Center" Opacity="0.82" />
-                            </StackPanel>
-                            <StackPanel Grid.Column="2" HorizontalAlignment="Center" VerticalAlignment="Center" Spacing="2">
-                                <TextBlock x:Name="HourlyTemp2" Text="7°" FontSize="16" FontWeight="SemiBold" HorizontalAlignment="Center" />
-                                <Image x:Name="HourlyIcon2" Width="26" Height="26" HorizontalAlignment="Center" Stretch="Uniform" />
-                                <TextBlock x:Name="HourlyTime2" Text="17:00" FontSize="12" FontWeight="Medium" HorizontalAlignment="Center" Opacity="0.82" />
-                            </StackPanel>
-                            <StackPanel Grid.Column="3" HorizontalAlignment="Center" VerticalAlignment="Center" Spacing="2">
-                                <TextBlock x:Name="HourlyTemp3" Text="日落" FontSize="16" FontWeight="SemiBold" HorizontalAlignment="Center" />
-                                <Image x:Name="HourlyIcon3" Width="26" Height="26" HorizontalAlignment="Center" Stretch="Uniform" />
-                                <TextBlock x:Name="HourlyTime3" Text="18:00" FontSize="12" FontWeight="Medium" HorizontalAlignment="Center" Opacity="0.82" />
-                            </StackPanel>
-                            <StackPanel Grid.Column="4" HorizontalAlignment="Center" VerticalAlignment="Center" Spacing="2">
-                                <TextBlock x:Name="HourlyTemp4" Text="7°" FontSize="16" FontWeight="SemiBold" HorizontalAlignment="Center" />
-                                <Image x:Name="HourlyIcon4" Width="26" Height="26" HorizontalAlignment="Center" Stretch="Uniform" />
-                                <TextBlock x:Name="HourlyTime4" Text="19:00" FontSize="12" FontWeight="Medium" HorizontalAlignment="Center" Opacity="0.82" />
-                            </StackPanel>
-                            <StackPanel Grid.Column="5" HorizontalAlignment="Center" VerticalAlignment="Center" Spacing="2">
-                                <TextBlock x:Name="HourlyTemp5" Text="7°" FontSize="16" FontWeight="SemiBold" HorizontalAlignment="Center" />
-                                <Image x:Name="HourlyIcon5" Width="26" Height="26" HorizontalAlignment="Center" Stretch="Uniform" />
-                                <TextBlock x:Name="HourlyTime5" Text="20:00" FontSize="12" FontWeight="Medium" HorizontalAlignment="Center" Opacity="0.82" />
-                            </StackPanel>
-                        </Grid>
-                    </Border>
-
-                    <Border x:Name="SeparatorLine"
-                            Grid.Row="2"
-                            Height="1"
-                            Margin="0,12,0,0"
-                            Background="#25FFFFFF" />
-
-                    <Grid x:Name="DailyGrid"
-                          Grid.Row="3"
-                          RowDefinitions="Auto,Auto,Auto,Auto,Auto"
-                          RowSpacing="10"
-                          Margin="0,12,0,0">
-                        <Grid Grid.Row="0" ColumnDefinitions="Auto,*,Auto,Auto" ColumnSpacing="10">
-                            <Image x:Name="DailyIcon0" Width="24" Height="24" VerticalAlignment="Center" Stretch="Uniform" />
-                            <TextBlock x:Name="DailyLabel0" Grid.Column="1" Text="明天·阴" FontSize="17" FontWeight="SemiBold" TextTrimming="CharacterEllipsis" MaxLines="1" VerticalAlignment="Center" />
-                            <TextBlock x:Name="DailyHigh0" Grid.Column="2" Text="10" FontSize="17" FontWeight="SemiBold" VerticalAlignment="Center" />
-                            <TextBlock x:Name="DailyLow0" Grid.Column="3" Text="5" FontSize="17" FontWeight="Medium" VerticalAlignment="Center" Opacity="0.70" />
-                        </Grid>
-
-                        <Grid Grid.Row="1" ColumnDefinitions="Auto,*,Auto,Auto" ColumnSpacing="10">
-                            <Image x:Name="DailyIcon1" Width="24" Height="24" VerticalAlignment="Center" Stretch="Uniform" />
-                            <TextBlock x:Name="DailyLabel1" Grid.Column="1" Text="周四·多云" FontSize="17" FontWeight="SemiBold" TextTrimming="CharacterEllipsis" MaxLines="1" VerticalAlignment="Center" />
-                            <TextBlock x:Name="DailyHigh1" Grid.Column="2" Text="13" FontSize="17" FontWeight="SemiBold" VerticalAlignment="Center" />
-                            <TextBlock x:Name="DailyLow1" Grid.Column="3" Text="4" FontSize="17" FontWeight="Medium" VerticalAlignment="Center" Opacity="0.70" />
-                        </Grid>
-
-                        <Grid Grid.Row="2" ColumnDefinitions="Auto,*,Auto,Auto" ColumnSpacing="10">
-                            <Image x:Name="DailyIcon2" Width="24" Height="24" VerticalAlignment="Center" Stretch="Uniform" />
-                            <TextBlock x:Name="DailyLabel2" Grid.Column="1" Text="周五·阴" FontSize="17" FontWeight="SemiBold" TextTrimming="CharacterEllipsis" MaxLines="1" VerticalAlignment="Center" />
-                            <TextBlock x:Name="DailyHigh2" Grid.Column="2" Text="12" FontSize="17" FontWeight="SemiBold" VerticalAlignment="Center" />
-                            <TextBlock x:Name="DailyLow2" Grid.Column="3" Text="3" FontSize="17" FontWeight="Medium" VerticalAlignment="Center" Opacity="0.70" />
-                        </Grid>
-
-                        <Grid Grid.Row="3" ColumnDefinitions="Auto,*,Auto,Auto" ColumnSpacing="10">
-                            <Image x:Name="DailyIcon3" Width="24" Height="24" VerticalAlignment="Center" Stretch="Uniform" />
-                            <TextBlock x:Name="DailyLabel3" Grid.Column="1" Text="周六·多云" FontSize="17" FontWeight="SemiBold" TextTrimming="CharacterEllipsis" MaxLines="1" VerticalAlignment="Center" />
-                            <TextBlock x:Name="DailyHigh3" Grid.Column="2" Text="10" FontSize="17" FontWeight="SemiBold" VerticalAlignment="Center" />
-                            <TextBlock x:Name="DailyLow3" Grid.Column="3" Text="2" FontSize="17" FontWeight="Medium" VerticalAlignment="Center" Opacity="0.70" />
-                        </Grid>
-
-                        <Grid Grid.Row="4" ColumnDefinitions="Auto,*,Auto,Auto" ColumnSpacing="10">
-                            <Image x:Name="DailyIcon4" Width="24" Height="24" VerticalAlignment="Center" Stretch="Uniform" />
-                            <TextBlock x:Name="DailyLabel4" Grid.Column="1" Text="周日·阴" FontSize="17" FontWeight="SemiBold" TextTrimming="CharacterEllipsis" MaxLines="1" VerticalAlignment="Center" />
-                            <TextBlock x:Name="DailyHigh4" Grid.Column="2" Text="11" FontSize="17" FontWeight="SemiBold" VerticalAlignment="Center" />
-                            <TextBlock x:Name="DailyLow4" Grid.Column="3" Text="3" FontSize="17" FontWeight="Medium" VerticalAlignment="Center" Opacity="0.70" />
-                        </Grid>
-                    </Grid>
-                </Grid>
-            </Border>
-        </Grid>
-    </Border>
-</UserControl>
diff --git a/LanMountainDesktop/Views/Components/ExtendedWeatherWidget.axaml.cs b/LanMountainDesktop/Views/Components/ExtendedWeatherWidget.axaml.cs
deleted file mode 100644
index 290ab73..0000000
--- a/LanMountainDesktop/Views/Components/ExtendedWeatherWidget.axaml.cs
+++ /dev/null
@@ -1,1061 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Globalization;
-using System.Linq;
-using System.Text.RegularExpressions;
-using System.Threading;
-using System.Threading.Tasks;
-using Avalonia;
-using Avalonia.Controls;
-using Avalonia.Media;
-using Avalonia.Threading;
-using LanMountainDesktop.ComponentSystem;
-using LanMountainDesktop.Host.Abstractions;
-using LanMountainDesktop.Models;
-using LanMountainDesktop.PluginSdk;
-using LanMountainDesktop.Services;
-using LanMountainDesktop.Services.Settings;
-using LanMountainDesktop.Theme;
-
-namespace LanMountainDesktop.Views.Components;
-
-public partial class ExtendedWeatherWidget : UserControl, IDesktopComponentWidget, IDesktopPageVisibilityAwareComponentWidget, ITimeZoneAwareComponentWidget, IWeatherInfoAwareComponentWidget, IComponentPlacementContextAware, IComponentChromeContextAware
-{
-    private static readonly IWeatherInfoService DefaultWeatherInfoService = new XiaomiWeatherService();
-    private static readonly IReadOnlyList<int> SupportedAutoRefreshIntervalsMinutes = RefreshIntervalCatalog.SupportedIntervalsMinutes;
-
-    private readonly DispatcherTimer _refreshTimer = new() { Interval = TimeSpan.FromMinutes(12) };
-    private readonly DispatcherTimer _animationTimer = new() { Interval = FluttermotionToken.WeatherAnimationFrameInterval };
-    private readonly ScaleTransform _backgroundMotionScaleTransform = new(1, 1);
-    private readonly TranslateTransform _backgroundMotionTranslateTransform = new();
-    private ISettingsService _settingsService = HostSettingsFacadeProvider.GetOrCreate().Settings;
-    private readonly LocalizationService _localizationService = new();
-
-    private IWeatherInfoService _weatherInfoService = DefaultWeatherInfoService;
-    private TimeZoneService? _timeZoneService;
-    private CancellationTokenSource? _refreshCts;
-    private double _currentCellSize = 48;
-    private ComponentChromeContext? _chromeContext;
-    private double _phase;
-    private bool _isAttached;
-    private bool _isOnActivePage = true;
-    private bool _isRefreshing;
-    private bool _autoRefreshEnabled = true;
-    private string _languageCode = "zh-CN";
-    private HyperOS3WeatherVisualKind _activeVisualKind = HyperOS3WeatherVisualKind.ClearDay;
-    private string _componentId = BuiltInComponentIds.DesktopExtendedWeather;
-    private string _placementId = string.Empty;
-    private readonly TextBlock[] _hourlyTempBlocks;
-    private readonly TextBlock[] _hourlyTimeBlocks;
-    private readonly Image[] _hourlyIconBlocks;
-    private readonly TextBlock[] _dailyLabelBlocks;
-    private readonly TextBlock[] _dailyHighBlocks;
-    private readonly TextBlock[] _dailyLowBlocks;
-    private readonly Image[] _dailyIconBlocks;
-    private readonly HyperOS3WeatherVisualKind[] _dailyIconKinds;
-
-    public ExtendedWeatherWidget()
-    {
-        InitializeComponent();
-        InitializeMotionTransform();
-        _hourlyTempBlocks =
-        [
-            HourlyTemp0, HourlyTemp1, HourlyTemp2, HourlyTemp3, HourlyTemp4, HourlyTemp5
-        ];
-        _hourlyTimeBlocks =
-        [
-            HourlyTime0, HourlyTime1, HourlyTime2, HourlyTime3, HourlyTime4, HourlyTime5
-        ];
-        _hourlyIconBlocks =
-        [
-            HourlyIcon0, HourlyIcon1, HourlyIcon2, HourlyIcon3, HourlyIcon4, HourlyIcon5
-        ];
-        _dailyLabelBlocks =
-        [
-            DailyLabel0, DailyLabel1, DailyLabel2, DailyLabel3, DailyLabel4
-        ];
-        _dailyHighBlocks =
-        [
-            DailyHigh0, DailyHigh1, DailyHigh2, DailyHigh3, DailyHigh4
-        ];
-        _dailyLowBlocks =
-        [
-            DailyLow0, DailyLow1, DailyLow2, DailyLow3, DailyLow4
-        ];
-        _dailyIconBlocks =
-        [
-            DailyIcon0, DailyIcon1, DailyIcon2, DailyIcon3, DailyIcon4
-        ];
-        _dailyIconKinds = Enumerable.Repeat(HyperOS3WeatherVisualKind.Unknown, _dailyIconBlocks.Length).ToArray();
-        ConfigureTextOverflowGuards();
-        _refreshTimer.Tick += OnRefreshTimerTick;
-        _animationTimer.Tick += OnAnimationTick;
-        AttachedToVisualTree += OnAttachedToVisualTree;
-        DetachedFromVisualTree += OnDetachedFromVisualTree;
-        SizeChanged += OnSizeChanged;
-        ApplyCellSize(_currentCellSize);
-        ApplyVisualTheme(_activeVisualKind);
-        ApplyFallback();
-        ApplyAutoRefreshSettings();
-    }
-
-    private void ConfigureTextOverflowGuards()
-    {
-        CityTextBlock.TextWrapping = TextWrapping.NoWrap;
-        CityTextBlock.TextTrimming = TextTrimming.CharacterEllipsis;
-        CityTextBlock.MaxLines = 1;
-
-        ConditionTextBlock.TextWrapping = TextWrapping.NoWrap;
-        ConditionTextBlock.TextTrimming = TextTrimming.CharacterEllipsis;
-        ConditionTextBlock.MaxLines = 1;
-
-        RangeTextBlock.TextWrapping = TextWrapping.NoWrap;
-        RangeTextBlock.TextTrimming = TextTrimming.CharacterEllipsis;
-        RangeTextBlock.MaxLines = 1;
-
-        TemperatureTextBlock.TextWrapping = TextWrapping.NoWrap;
-        TemperatureTextBlock.TextTrimming = TextTrimming.None;
-        TemperatureTextBlock.MaxLines = 1;
-    }
-
-    public void ApplyCellSize(double cellSize)
-    {
-        _currentCellSize = Math.Max(1, cellSize);
-        var metrics = HyperOS3WeatherTheme.ResolveMetrics(HyperOS3WeatherWidgetKind.Extended4x4);
-        var width = Bounds.Width > 1 ? Bounds.Width : _currentCellSize * 4;
-        var height = Bounds.Height > 1 ? Bounds.Height : _currentCellSize * 4;
-        var mainRectangleCornerRadius = ComponentChromeCornerRadiusHelper.ResolveMainRectangleRadius(_chromeContext);
-        ComponentChromeCornerRadiusHelper.Apply(
-            mainRectangleCornerRadius,
-            RootBorder,
-            BackgroundImageLayer,
-            BackgroundMotionLayer,
-            BackgroundTintLayer,
-            BackgroundLightLayer,
-            BackgroundShadeLayer);
-        var horizontalPadding = Math.Clamp(Math.Min(width * metrics.HorizontalPaddingScale * 0.30, width * 0.11), 4, 34);
-        var verticalPadding = Math.Clamp(Math.Min(height * metrics.VerticalPaddingScale * 0.30, height * 0.11), 4, 34);
-        ContentPaddingBorder.Padding = new Thickness(
-            ComponentChromeCornerRadiusHelper.SafeValue(horizontalPadding, 4, 34, _chromeContext),
-            ComponentChromeCornerRadiusHelper.SafeValue(verticalPadding, 4, 34, _chromeContext));
-        ApplyTypography(width, height);
-    }
-
-    public void SetComponentChromeContext(ComponentChromeContext context)
-    {
-        ArgumentNullException.ThrowIfNull(context);
-        _chromeContext = context;
-        ApplyCellSize(_currentCellSize);
-    }
-
-    public void SetTimeZoneService(TimeZoneService timeZoneService)
-    {
-        if (_timeZoneService is not null)
-        {
-            _timeZoneService.TimeZoneChanged -= OnTimeZoneChanged;
-        }
-
-        _timeZoneService = timeZoneService;
-        _timeZoneService.TimeZoneChanged += OnTimeZoneChanged;
-    }
-
-    public void ClearTimeZoneService()
-    {
-        if (_timeZoneService is null)
-        {
-            return;
-        }
-
-        _timeZoneService.TimeZoneChanged -= OnTimeZoneChanged;
-        _timeZoneService = null;
-    }
-
-    public void SetWeatherInfoService(IWeatherInfoService weatherInfoService)
-    {
-        _weatherInfoService = weatherInfoService ?? DefaultWeatherInfoService;
-        if (_isAttached && _isOnActivePage)
-        {
-            _ = RefreshWeatherAsync(false);
-        }
-    }
-
-    public void RefreshFromSettings()
-    {
-        ApplyAutoRefreshSettings();
-        if (_isAttached && _isOnActivePage)
-        {
-            _ = RefreshWeatherAsync(forceRefresh: true);
-        }
-    }
-
-    public void SetComponentPlacementContext(string componentId, string? placementId)
-    {
-        _componentId = string.IsNullOrWhiteSpace(componentId)
-            ? BuiltInComponentIds.DesktopExtendedWeather
-            : componentId.Trim();
-        _placementId = placementId?.Trim() ?? string.Empty;
-        RefreshFromSettings();
-    }
-
-    public void SetDesktopPageContext(bool isOnActivePage, bool isEditMode)
-    {
-        _ = isEditMode;
-        var wasOnActivePage = _isOnActivePage;
-        _isOnActivePage = isOnActivePage;
-        UpdateTimerState();
-
-        if (!wasOnActivePage && _isOnActivePage && _isAttached)
-        {
-            _ = RefreshWeatherAsync(false);
-        }
-    }
-
-    private void OnTimeZoneChanged(object? sender, EventArgs e)
-    {
-        if (_isAttached && _isOnActivePage)
-        {
-            _ = RefreshWeatherAsync(false);
-        }
-    }
-
-    private void OnAttachedToVisualTree(object? sender, VisualTreeAttachmentEventArgs e)
-    {
-        _isAttached = true;
-        ApplyAutoRefreshSettings();
-        UpdateTimerState();
-        if (_isOnActivePage)
-        {
-            _ = RefreshWeatherAsync(false);
-        }
-    }
-
-    private void OnDetachedFromVisualTree(object? sender, VisualTreeAttachmentEventArgs e)
-    {
-        _isAttached = false;
-        UpdateTimerState();
-        CancelRefresh();
-    }
-
-    private void OnSizeChanged(object? sender, SizeChangedEventArgs e)
-    {
-        ApplyCellSize(_currentCellSize);
-    }
-
-    private async void OnRefreshTimerTick(object? sender, EventArgs e)
-    {
-        await RefreshWeatherAsync(false);
-    }
-
-    private void OnAnimationTick(object? sender, EventArgs e)
-    {
-        if (!_isAttached || !_isOnActivePage)
-        {
-            return;
-        }
-
-        _phase += 0.018;
-        if (_phase > Math.PI * 2) _phase -= Math.PI * 2;
-        var sin = Math.Sin(_phase);
-        var cos = Math.Cos(_phase * 0.83);
-        SetMotionTransform(sin * 7.0, cos * 5.0, 1.05 + (sin * 0.01));
-        BackgroundMotionLayer.Opacity = Math.Clamp(0.27 + (cos * 0.05), 0.10, 0.90);
-        BackgroundLightLayer.Opacity = Math.Clamp(0.62 + (sin * 0.06), 0.20, 0.95);
-        BackgroundShadeLayer.Opacity = Math.Clamp(0.80 + (cos * 0.03), 0.45, 0.95);
-    }
-
-    private async Task RefreshWeatherAsync(bool forceRefresh)
-    {
-        if (!_isAttached || !_isOnActivePage || _isRefreshing)
-        {
-            return;
-        }
-
-        _isRefreshing = true;
-        var app = _settingsService.LoadSnapshot<AppSettingsSnapshot>(SettingsScope.App);
-        _languageCode = _localizationService.NormalizeLanguageCode(app.LanguageCode);
-        var locale = string.Equals(_languageCode, "zh-CN", StringComparison.OrdinalIgnoreCase) ? "zh_cn" : "en_us";
-        var latitude = double.IsFinite(app.WeatherLatitude) ? Math.Clamp(app.WeatherLatitude, -90, 90) : 39.9042;
-        var longitude = double.IsFinite(app.WeatherLongitude) ? Math.Clamp(app.WeatherLongitude, -180, 180) : 116.4074;
-        var locationKey = (app.WeatherLocationKey ?? string.Empty).Trim();
-        if (string.IsNullOrWhiteSpace(locationKey) && string.Equals(app.WeatherLocationMode, "Coordinates", StringComparison.OrdinalIgnoreCase))
-        {
-            locationKey = string.Create(CultureInfo.InvariantCulture, $"coord:{latitude:F4},{longitude:F4}");
-        }
-
-        if (string.IsNullOrWhiteSpace(locationKey))
-        {
-            ApplyFallback();
-            _isRefreshing = false;
-            return;
-        }
-
-        SetLoadingSkeleton(true);
-
-        var cts = new CancellationTokenSource();
-        var previous = Interlocked.Exchange(ref _refreshCts, cts);
-        previous?.Cancel();
-        previous?.Dispose();
-
-        try
-        {
-            var query = new WeatherQuery(locationKey, latitude, longitude, 7, locale, ForceRefresh: forceRefresh);
-            var result = await _weatherInfoService.GetWeatherAsync(query, cts.Token);
-            if (cts.IsCancellationRequested || !_isAttached)
-            {
-                return;
-            }
-
-            if (!result.Success || result.Data is null)
-            {
-                ApplyFallback();
-                return;
-            }
-
-            ApplySnapshot(result.Data, app.WeatherLocationName);
-        }
-        catch (OperationCanceledException)
-        {
-            // Ignore canceled requests.
-        }
-        catch
-        {
-            ApplyFallback();
-        }
-        finally
-        {
-            if (ReferenceEquals(_refreshCts, cts))
-            {
-                _refreshCts = null;
-            }
-
-            cts.Dispose();
-            _isRefreshing = false;
-        }
-    }
-
-    private void ApplySnapshot(WeatherSnapshot snapshot, string? fallbackLocationName)
-    {
-        var isNight = HyperOS3WeatherTheme.ResolveIsNightPreferred(
-            snapshot,
-            _timeZoneService?.CurrentTimeZone,
-            _timeZoneService?.GetCurrentTime() ?? DateTime.Now);
-        var currentVisual = XiaomiWeatherVisualResolver.Resolve(
-            snapshot.Current.WeatherText,
-            snapshot.Current.WeatherCode,
-            isNight,
-            _languageCode);
-        var kind = currentVisual.VisualKind;
-        ApplyVisualTheme(kind);
-        SetLoadingSkeleton(false);
-        WeatherIconImage.Source = HyperOS3WeatherAssetLoader.LoadImage(currentVisual.PrimaryIconAsset);
-        CityTextBlock.Text = ResolveLocation(snapshot.LocationName, fallbackLocationName);
-        ConditionTextBlock.Text = currentVisual.DisplayText;
-        TemperatureTextBlock.Text = FormatTemperature(snapshot.Current.TemperatureC);
-
-        var today = snapshot.DailyForecasts.FirstOrDefault();
-        RangeTextBlock.Text = $"{FormatTemperature(today?.HighTemperatureC)}/{FormatTemperature(today?.LowTemperatureC)}";
-
-        var now = _timeZoneService?.GetCurrentTime() ?? DateTime.Now;
-        var timelineStart = new DateTime(now.Year, now.Month, now.Day, now.Hour, 0, 0, now.Kind);
-        var sunsetSlotIndex = ResolveSunsetSlotIndex(snapshot, timelineStart, _hourlyTempBlocks.Length);
-        var localHourly = snapshot.HourlyForecasts
-            .Select(item => new { Source = item, Time = ConvertToConfiguredTime(item.Time) })
-            .OrderBy(item => item.Time)
-            .ToList();
-
-        for (var i = 0; i < _hourlyTempBlocks.Length; i++)
-        {
-            var target = timelineStart.AddHours(i);
-            var item = localHourly
-                .OrderBy(entry => Math.Abs((entry.Time - target).TotalMinutes))
-                .FirstOrDefault();
-            var weatherCode = item?.Source.WeatherCode ?? snapshot.Current.WeatherCode;
-            var hourVisual = XiaomiWeatherVisualResolver.Resolve(
-                item?.Source.WeatherText,
-                weatherCode,
-                IsNightHour(target),
-                _languageCode);
-            var hourKind = hourVisual.VisualKind;
-            _hourlyTempBlocks[i].Text = i == sunsetSlotIndex
-                ? L("weather.hourly.sunset", "Sunset")
-                : FormatTemperature(item?.Source.TemperatureC ?? snapshot.Current.TemperatureC);
-            _hourlyTimeBlocks[i].Text = target.ToString("HH:mm", CultureInfo.InvariantCulture);
-            _hourlyIconBlocks[i].Source = HyperOS3WeatherAssetLoader.LoadImage(hourVisual.CompactIconAsset);
-        }
-
-        var todayDate = DateOnly.FromDateTime(now);
-        for (var i = 0; i < _dailyLabelBlocks.Length; i++)
-        {
-            var date = todayDate.AddDays(i + 1);
-            var daily = snapshot.DailyForecasts.FirstOrDefault(entry => entry.Date == date) ?? snapshot.DailyForecasts.FirstOrDefault();
-            var weatherCode = daily?.DayWeatherCode ?? daily?.NightWeatherCode ?? snapshot.Current.WeatherCode;
-            var dayVisual = XiaomiWeatherVisualResolver.Resolve(
-                daily?.DayWeatherText ?? daily?.NightWeatherText,
-                weatherCode,
-                false,
-                _languageCode);
-            var dayKind = dayVisual.VisualKind;
-            var dayText = dayVisual.DisplayText;
-            _dailyLabelBlocks[i].Text = $"{ResolveDayLabel(date, i + 1)}·{dayText}";
-            _dailyHighBlocks[i].Text = FormatTemperatureValue(daily?.HighTemperatureC);
-            _dailyLowBlocks[i].Text = FormatTemperatureValue(daily?.LowTemperatureC);
-            _dailyIconKinds[i] = dayKind;
-            _dailyIconBlocks[i].Source = HyperOS3WeatherAssetLoader.LoadImage(dayVisual.CompactIconAsset);
-        }
-    }
-
-    private void ApplyFallback()
-    {
-        ApplyVisualTheme(HyperOS3WeatherVisualKind.Unknown);
-        SetLoadingSkeleton(false);
-        WeatherIconImage.Source = HyperOS3WeatherAssetLoader.LoadImage(HyperOS3WeatherTheme.ResolveHeroIconAsset(HyperOS3WeatherVisualKind.Unknown));
-        CityTextBlock.Text = L("weather.widget.location_unknown", "Unknown location");
-        ConditionTextBlock.Text = L("weather.widget.loading", "Loading...");
-        TemperatureTextBlock.Text = "--°";
-        RangeTextBlock.Text = "--°/--°";
-        var now = _timeZoneService?.GetCurrentTime() ?? DateTime.Now;
-        var timelineStart = new DateTime(now.Year, now.Month, now.Day, now.Hour, 0, 0, now.Kind);
-        for (var i = 0; i < _hourlyTempBlocks.Length; i++)
-        {
-            _hourlyTempBlocks[i].Text = i == 3 ? L("weather.hourly.sunset", "Sunset") : "--°";
-            _hourlyTimeBlocks[i].Text = timelineStart.AddHours(i).ToString("HH:mm", CultureInfo.InvariantCulture);
-            _hourlyIconBlocks[i].Source = HyperOS3WeatherAssetLoader.LoadImage(HyperOS3WeatherTheme.ResolveMiniIconAsset(HyperOS3WeatherVisualKind.Unknown));
-        }
-
-        for (var i = 0; i < _dailyLabelBlocks.Length; i++)
-        {
-            _dailyLabelBlocks[i].Text = $"{ResolveDayLabel(DateOnly.FromDateTime(DateTime.Now).AddDays(i + 1), i + 1)}·{L("weather.widget.condition_cloudy", "Cloudy")}";
-            _dailyHighBlocks[i].Text = "--";
-            _dailyLowBlocks[i].Text = "--";
-            _dailyIconKinds[i] = HyperOS3WeatherVisualKind.Unknown;
-            _dailyIconBlocks[i].Source = HyperOS3WeatherAssetLoader.LoadImage(HyperOS3WeatherTheme.ResolveMiniIconAsset(HyperOS3WeatherVisualKind.Unknown));
-        }
-    }
-
-    private void ApplyVisualTheme(HyperOS3WeatherVisualKind kind)
-    {
-        _activeVisualKind = kind;
-        var palette = HyperOS3WeatherTheme.ResolvePalette(kind);
-        RootBorder.Background = CreateGradientBrush(palette.GradientFrom, palette.GradientTo);
-
-        var background = CreateImageBrush(HyperOS3WeatherTheme.ResolveBackgroundAsset(kind));
-        BackgroundImageLayer.Background = background ?? CreateGradientBrush(palette.GradientFrom, palette.GradientTo);
-        BackgroundMotionLayer.Background = background ?? CreateGradientBrush(palette.GradientFrom, palette.GradientTo);
-        BackgroundTintLayer.Background = CreateSolidBrush(palette.Tint);
-
-        var isNightVisual = kind is HyperOS3WeatherVisualKind.ClearNight or HyperOS3WeatherVisualKind.PartlyCloudyNight or HyperOS3WeatherVisualKind.CloudyNight;
-        var backgroundSamples = WeatherTypographyAccessibility.BuildBackgroundSamples(
-            palette.GradientFrom,
-            palette.GradientTo,
-            palette.Tint,
-            isNightVisual);
-        TemperatureTextBlock.Foreground = WeatherTypographyAccessibility.CreateReadableBrush(
-            palette.PrimaryText,
-            backgroundSamples,
-            WeatherTypographyAccessibility.WcagLargeTextContrast);
-        CityTextBlock.Foreground = WeatherTypographyAccessibility.CreateReadableBrush(
-            palette.SecondaryText,
-            backgroundSamples,
-            WeatherTypographyAccessibility.WcagNormalTextContrast,
-            isNightVisual ? (byte)0xE6 : (byte)0xD4);
-        ConditionTextBlock.Foreground = WeatherTypographyAccessibility.CreateReadableBrush(
-            palette.PrimaryText,
-            backgroundSamples,
-            WeatherTypographyAccessibility.WcagLargeTextContrast,
-            isNightVisual ? (byte)0xED : (byte)0xDF);
-        RangeTextBlock.Foreground = WeatherTypographyAccessibility.CreateReadableBrush(
-            palette.PrimaryText,
-            backgroundSamples,
-            WeatherTypographyAccessibility.WcagLargeTextContrast,
-            isNightVisual ? (byte)0xE2 : (byte)0xCE);
-        HourlyPanelBorder.Background = Brushes.Transparent;
-        SeparatorLine.Background = CreateSolidBrush(palette.SecondaryText, isNightVisual ? (byte)0x3A : (byte)0x28);
-
-        var hourlyTempBrush = WeatherTypographyAccessibility.CreateReadableBrush(
-            palette.PrimaryText,
-            backgroundSamples,
-            WeatherTypographyAccessibility.WcagNormalTextContrast,
-            isNightVisual ? (byte)0xEE : (byte)0xE1);
-        var hourlyTimeBrush = WeatherTypographyAccessibility.CreateReadableBrush(
-            palette.TertiaryText,
-            backgroundSamples,
-            WeatherTypographyAccessibility.WcagNormalTextContrast,
-            isNightVisual ? (byte)0xC8 : (byte)0xAC);
-        var dailyTextBrush = WeatherTypographyAccessibility.CreateReadableBrush(
-            palette.PrimaryText,
-            backgroundSamples,
-            WeatherTypographyAccessibility.WcagNormalTextContrast,
-            isNightVisual ? (byte)0xEA : (byte)0xDF);
-        var dailyLowBrush = WeatherTypographyAccessibility.CreateReadableBrush(
-            palette.TertiaryText,
-            backgroundSamples,
-            WeatherTypographyAccessibility.WcagNormalTextContrast,
-            isNightVisual ? (byte)0xBE : (byte)0xA6);
-        for (var i = 0; i < _hourlyTempBlocks.Length; i++)
-        {
-            _hourlyTempBlocks[i].Foreground = hourlyTempBrush;
-            _hourlyTimeBlocks[i].Foreground = hourlyTimeBrush;
-        }
-
-        for (var i = 0; i < _dailyLabelBlocks.Length; i++)
-        {
-            _dailyLabelBlocks[i].Foreground = dailyTextBrush;
-            _dailyHighBlocks[i].Foreground = dailyTextBrush;
-            _dailyLowBlocks[i].Foreground = dailyLowBrush;
-        }
-    }
-
-    private void ApplyTypography(double width, double height)
-    {
-        var innerWidth = Math.Max(140, width - ContentPaddingBorder.Padding.Left - ContentPaddingBorder.Padding.Right);
-        var innerHeight = Math.Max(140, height - ContentPaddingBorder.Padding.Top - ContentPaddingBorder.Padding.Bottom);
-        var fitScale = Math.Clamp(Math.Min(innerWidth / 592d, innerHeight / 600d), 0.30, 3.20);
-        var cellScale = Math.Clamp(_currentCellSize / 44d, 0.34, 3.80);
-        var visualScale = Math.Clamp((fitScale * 0.72) + (cellScale * 0.28), 0.30, 3.80);
-        var emphasis = Math.Clamp((visualScale - 0.82) / 1.90, 0, 1);
-
-        LayoutRoot.RowSpacing = Math.Clamp(8 * fitScale, 1, 22);
-        SummaryGrid.ColumnSpacing = Math.Clamp(16 * fitScale, 4, 38);
-        SummaryInfoGrid.RowSpacing = Math.Clamp(2 * fitScale, 0.2, 9);
-        BottomInfoStack.Spacing = Math.Clamp(2 * fitScale, 0.3, 14);
-        ConditionRangeStack.Spacing = Math.Clamp(9 * fitScale, 1, 24);
-        HourlyGrid.ColumnSpacing = Math.Clamp(4 * fitScale, 0.5, 22);
-
-        var summaryHeight = Math.Clamp(innerHeight * 0.22, 34, Math.Max(34, innerHeight * 0.42));
-        var hourlyHeight = Math.Clamp(innerHeight * 0.20, 34, Math.Max(34, innerHeight * 0.36));
-        var separatorBandHeight = Math.Clamp(innerHeight * 0.03, 4, 40);
-        if (LayoutRoot.RowDefinitions.Count >= 4)
-        {
-            LayoutRoot.RowDefinitions[0].Height = new GridLength(summaryHeight, GridUnitType.Pixel);
-            LayoutRoot.RowDefinitions[1].Height = new GridLength(hourlyHeight, GridUnitType.Pixel);
-            LayoutRoot.RowDefinitions[2].Height = new GridLength(separatorBandHeight, GridUnitType.Pixel);
-            LayoutRoot.RowDefinitions[3].Height = new GridLength(1, GridUnitType.Star);
-        }
-
-        var topScale = Math.Clamp(((summaryHeight / 118d) * 0.44) + (visualScale * 0.84), 0.24, 4.00);
-        var iconGrowth = Math.Clamp((visualScale - 0.88) / 1.70, 0, 1);
-        var iconScaleBoost = ResolveHeroIconScaleBoost(_activeVisualKind);
-        var iconSize = Math.Clamp(Lerp(90, 122, iconGrowth) * topScale * iconScaleBoost, 14, 360);
-        iconSize = Math.Min(iconSize, Math.Max(14, innerWidth * Lerp(0.18, 0.26, iconGrowth)));
-        var temperatureSample = string.IsNullOrWhiteSpace(TemperatureTextBlock.Text)
-            ? "00°"
-            : TemperatureTextBlock.Text.Trim();
-        var temperatureGlyphCount = Math.Clamp(temperatureSample.Length, 3, 6);
-        var temperatureMaxWidth = Math.Max(30, innerWidth - iconSize - SummaryGrid.ColumnSpacing - 6);
-        var rawTemperatureSize = Math.Clamp(Lerp(72, 102, iconGrowth) * topScale, 14, 340);
-        var fitTemperatureSize = temperatureMaxWidth / (temperatureGlyphCount * 0.62);
-        TemperatureTextBlock.FontSize = Math.Clamp(Math.Min(rawTemperatureSize, fitTemperatureSize), 10, 340);
-        TemperatureTextBlock.FontWeight = ToVariableWeight(Lerp(300, 380, emphasis));
-        TemperatureTextBlock.MaxWidth = Math.Clamp(temperatureMaxWidth, 30, Math.Max(300, innerWidth * 0.66));
-        TemperatureTextBlock.Margin = new Thickness(0, Math.Clamp(-2.2 * topScale, -12, 0), 0, 0);
-
-        var cityFontSize = Math.Clamp(18.5 * topScale, 7, 86);
-        var conditionFontSize = Math.Clamp(20 * topScale, 7, 90);
-        var rangeFontSize = Math.Clamp(20 * topScale, 7, 90);
-        CityTextBlock.FontSize = cityFontSize;
-        ConditionTextBlock.FontSize = conditionFontSize;
-        RangeTextBlock.FontSize = rangeFontSize;
-        CityTextBlock.FontWeight = ToVariableWeight(Lerp(530, 620, emphasis));
-        ConditionTextBlock.FontWeight = ToVariableWeight(Lerp(580, 660, emphasis));
-        RangeTextBlock.FontWeight = ToVariableWeight(Lerp(600, 680, emphasis));
-        CityTextBlock.LineHeight = cityFontSize * 1.08;
-        ConditionTextBlock.LineHeight = conditionFontSize * 1.06;
-        RangeTextBlock.LineHeight = rangeFontSize * 1.06;
-
-        WeatherIconImage.Width = iconSize;
-        WeatherIconImage.Height = iconSize;
-        WeatherIconImage.Margin = new Thickness(0, Math.Clamp(-2.4 * topScale, -12, 0), 0, 0);
-        ConditionTextBlock.MaxWidth = Math.Clamp(innerWidth * 0.25, 28, 340);
-        RangeTextBlock.MaxWidth = Math.Clamp(innerWidth * 0.31, 34, 380);
-        CityTextBlock.MaxWidth = Math.Clamp(innerWidth * 0.36, 34, 420);
-
-        HourlyPanelBorder.Padding = new Thickness(0);
-        HourlyPanelBorder.CornerRadius = new CornerRadius(0);
-        HourlyPanelBorder.Margin = new Thickness(0, Math.Clamp(4 * fitScale, 0, 18), 0, 0);
-
-        var hourlyCellWidth = Math.Max(12, (innerWidth - (HourlyGrid.ColumnSpacing * 5)) / 6d);
-        var hourlyCellScale = Math.Clamp(
-            Math.Min((visualScale * 0.44) + ((hourlyHeight / 120d) * 0.62), hourlyCellWidth / 76d),
-            0.22,
-            3.80);
-        var hourlyTempSize = Math.Clamp(19 * hourlyCellScale, 6, 72);
-        var hourlyTimeSize = Math.Clamp(14 * hourlyCellScale, 6, 52);
-        var hourlyIconSize = Math.Clamp(42 * hourlyCellScale, 9, 140);
-        hourlyIconSize = Math.Min(hourlyIconSize, Math.Max(10, hourlyCellWidth * 0.86));
-        hourlyIconSize = Math.Min(hourlyIconSize, Math.Max(10, hourlyHeight * 0.56));
-        var hourlyStackSpacing = Math.Clamp(2 * hourlyCellScale, 0.2, 10);
-        for (var i = 0; i < _hourlyTempBlocks.Length; i++)
-        {
-            _hourlyTempBlocks[i].FontSize = hourlyTempSize;
-            _hourlyTimeBlocks[i].FontSize = hourlyTimeSize;
-            _hourlyTempBlocks[i].FontWeight = ToVariableWeight(Lerp(540, 650, emphasis));
-            _hourlyTimeBlocks[i].FontWeight = ToVariableWeight(Lerp(450, 560, emphasis));
-            _hourlyTempBlocks[i].MaxWidth = Math.Clamp(hourlyCellWidth, 12, 260);
-            _hourlyTimeBlocks[i].MaxWidth = Math.Clamp(hourlyCellWidth, 12, 260);
-            _hourlyIconBlocks[i].Width = hourlyIconSize;
-            _hourlyIconBlocks[i].Height = hourlyIconSize;
-            if (_hourlyTempBlocks[i].Parent is StackPanel stack) stack.Spacing = hourlyStackSpacing;
-        }
-
-        SeparatorLine.Margin = new Thickness(0, Math.Clamp(separatorBandHeight * 0.45, 1, 16), 0, 0);
-        DailyGrid.Margin = new Thickness(0, Math.Clamp(6 * fitScale, 0.5, 24), 0, 0);
-        var dailyAreaHeight = Math.Max(50, innerHeight - summaryHeight - hourlyHeight - separatorBandHeight - (LayoutRoot.RowSpacing * 3) - DailyGrid.Margin.Top);
-        var dailyRowSpacing = Math.Clamp(dailyAreaHeight * 0.028, 1, 22);
-        DailyGrid.RowSpacing = dailyRowSpacing;
-        var dailyRowHeight = Math.Max(8, (dailyAreaHeight - (dailyRowSpacing * 4)) / 5d);
-        var dailyRowScale = Math.Clamp(((dailyRowHeight / 40d) * 0.62) + (visualScale * 0.44), 0.22, 3.80);
-
-        var dailyLabelSize = Math.Clamp(18.5 * dailyRowScale, 6, 70);
-        var dailyTempSize = Math.Clamp(19 * dailyRowScale, 6, 72);
-        var dailyIconSize = Math.Clamp(43 * dailyRowScale, 9, 132);
-        dailyIconSize = Math.Min(dailyIconSize, Math.Max(10, dailyRowHeight * 0.92));
-        dailyIconSize = Math.Min(dailyIconSize, Math.Max(10, innerWidth * 0.14));
-        var dailyLabelMaxWidth = Math.Clamp(innerWidth * 0.52, 28, 460);
-        var dailyHighWidth = Math.Clamp(innerWidth * 0.14, 14, 140);
-        var dailyLowWidth = Math.Clamp(innerWidth * 0.11, 12, 120);
-        var dailyHighRightGap = Math.Clamp(innerWidth * 0.018, 1, 28);
-        for (var i = 0; i < _dailyLabelBlocks.Length; i++)
-        {
-            _dailyLabelBlocks[i].FontSize = dailyLabelSize;
-            _dailyHighBlocks[i].FontSize = dailyTempSize;
-            _dailyLowBlocks[i].FontSize = dailyTempSize;
-            _dailyLabelBlocks[i].FontWeight = ToVariableWeight(Lerp(520, 620, emphasis));
-            _dailyHighBlocks[i].FontWeight = ToVariableWeight(Lerp(560, 680, emphasis));
-            _dailyLowBlocks[i].FontWeight = ToVariableWeight(Lerp(470, 590, emphasis));
-            _dailyLabelBlocks[i].MaxWidth = dailyLabelMaxWidth;
-            _dailyHighBlocks[i].Width = dailyHighWidth;
-            _dailyLowBlocks[i].Width = dailyLowWidth;
-            _dailyHighBlocks[i].Margin = new Thickness(0, 0, dailyHighRightGap, 0);
-            _dailyLowBlocks[i].Margin = new Thickness(0);
-            _dailyHighBlocks[i].HorizontalAlignment = Avalonia.Layout.HorizontalAlignment.Right;
-            _dailyLowBlocks[i].HorizontalAlignment = Avalonia.Layout.HorizontalAlignment.Right;
-            _dailyHighBlocks[i].TextAlignment = TextAlignment.Right;
-            _dailyLowBlocks[i].TextAlignment = TextAlignment.Right;
-            if (_dailyIconBlocks[i].Parent is Grid dailyRowGrid)
-            {
-                dailyRowGrid.ColumnSpacing = Math.Clamp(9 * dailyRowScale, 4, 18);
-            }
-
-            var dailyKind = i < _dailyIconKinds.Length
-                ? _dailyIconKinds[i]
-                : HyperOS3WeatherVisualKind.Unknown;
-            var dailyIconVisualSize = Math.Clamp(
-                dailyIconSize * ResolveDailyMiniIconScaleBoost(dailyKind),
-                8,
-                148);
-            dailyIconVisualSize = Math.Min(dailyIconVisualSize, Math.Max(10, dailyRowHeight * 0.94));
-            _dailyIconBlocks[i].Width = dailyIconVisualSize;
-            _dailyIconBlocks[i].Height = dailyIconVisualSize;
-        }
-    }
-
-    private int ResolveSunsetSlotIndex(WeatherSnapshot snapshot, DateTime startTime, int slotCount)
-    {
-        if (slotCount <= 0)
-        {
-            return -1;
-        }
-
-        var todayForecast = snapshot.DailyForecasts.FirstOrDefault(item => item.Date == DateOnly.FromDateTime(startTime));
-        if (todayForecast is null || !TryParseClockTime(todayForecast.SunsetTime, out var sunsetClock))
-        {
-            return -1;
-        }
-
-        var sunsetTime = startTime.Date + sunsetClock;
-        var bestIndex = -1;
-        var bestDelta = double.MaxValue;
-        for (var i = 0; i < slotCount; i++)
-        {
-            var slotTime = startTime.AddHours(i);
-            var deltaMinutes = Math.Abs((slotTime - sunsetTime).TotalMinutes);
-            if (deltaMinutes >= bestDelta)
-            {
-                continue;
-            }
-
-            bestDelta = deltaMinutes;
-            bestIndex = i;
-        }
-
-        return bestDelta <= 60 ? bestIndex : -1;
-    }
-
-    private static bool TryParseClockTime(string? text, out TimeSpan value)
-    {
-        if (string.IsNullOrWhiteSpace(text))
-        {
-            value = default;
-            return false;
-        }
-
-        var candidate = text.Trim();
-        if (TimeSpan.TryParse(candidate, CultureInfo.InvariantCulture, out value))
-        {
-            return true;
-        }
-
-        if (DateTimeOffset.TryParse(candidate, CultureInfo.InvariantCulture, DateTimeStyles.AssumeLocal, out var dto))
-        {
-            value = dto.TimeOfDay;
-            return true;
-        }
-
-        if (DateTime.TryParse(candidate, CultureInfo.InvariantCulture, DateTimeStyles.AssumeLocal, out var dt))
-        {
-            value = dt.TimeOfDay;
-            return true;
-        }
-
-        return false;
-    }
-
-    private static bool IsNightHour(DateTime time) => time.Hour < 6 || time.Hour >= 18;
-
-    private string ResolveDayLabel(DateOnly date, int offset)
-    {
-        if (offset == 1) return L("weather.multiday.tomorrow", "Tomorrow");
-        var dt = date.ToDateTime(TimeOnly.MinValue);
-        if (string.Equals(_languageCode, "zh-CN", StringComparison.OrdinalIgnoreCase))
-        {
-            return dt.ToString("ddd", CultureInfo.GetCultureInfo("zh-CN"))
-                .Replace("星期", "周", StringComparison.Ordinal);
-        }
-
-        return dt.ToString("ddd", CultureInfo.InvariantCulture);
-    }
-
-    private string ResolveLocation(string? rawLocation, string? fallbackLocation)
-    {
-        var input = string.IsNullOrWhiteSpace(rawLocation) ? fallbackLocation : rawLocation;
-        return ResolvePreciseDisplayLocation(
-            input,
-            _languageCode,
-            L("weather.widget.location_unknown", "Unknown location"));
-    }
-
-    private static string ResolvePreciseDisplayLocation(string? rawName, string languageCode, string fallback)
-    {
-        if (string.IsNullOrWhiteSpace(rawName))
-        {
-            return fallback;
-        }
-
-        var name = rawName.Trim();
-        if (name.Length == 0)
-        {
-            return fallback;
-        }
-
-        var isZh = string.Equals(languageCode, "zh-CN", StringComparison.OrdinalIgnoreCase);
-        var candidates = new List<string> { name };
-
-        // Prefer detailed parts inside parenthesis, e.g. "Beijing (Haidian)".
-        var parenthesisMatches = Regex.Matches(name, @"\(([^()]+)\)|\uFF08([^\uFF08\uFF09]+)\uFF09");
-        foreach (Match match in parenthesisMatches)
-        {
-            var inner = match.Groups[1].Success ? match.Groups[1].Value : match.Groups[2].Value;
-            if (!string.IsNullOrWhiteSpace(inner))
-            {
-                candidates.Add(inner.Trim());
-            }
-        }
-
-        var nameWithoutParenthesis = Regex.Replace(name, @"\([^()]*\)|\uFF08[^\uFF08\uFF09]*\uFF09", " ");
-        candidates.Add(nameWithoutParenthesis);
-
-        const string splitPattern = @"[\s\|/\\,\uFF0C\u3001\u00B7]+";
-        foreach (var piece in Regex.Split(string.Join(" ", candidates), splitPattern))
-        {
-            var token = piece.Trim();
-            if (!string.IsNullOrWhiteSpace(token))
-            {
-                candidates.Add(token);
-            }
-        }
-
-        var best = fallback;
-        var bestScore = int.MinValue;
-        foreach (var candidate in candidates
-                     .Select(c => c.Trim())
-                     .Where(c => !string.IsNullOrWhiteSpace(c))
-                     .Distinct(StringComparer.OrdinalIgnoreCase))
-        {
-            var score = ScoreLocationToken(candidate, isZh);
-            if (score > bestScore)
-            {
-                bestScore = score;
-                best = candidate;
-            }
-        }
-
-        return string.IsNullOrWhiteSpace(best) ? fallback : best;
-    }
-
-    private static int ScoreLocationToken(string token, bool isZh)
<!DOCTYPE html>
<html lang="en-US" data-theme="gitea-auto">
<head>
	<meta name="viewport" content="width=device-width, initial-scale=1">
	<title>Internal Server Error -  MistAperio Gitea</title>
	<link rel="icon" href="/assets/img/favicon.svg" type="image/svg+xml">
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	<link rel="stylesheet" href="/assets/css/index.css?v=1.25.5">
<link rel="stylesheet" href="/assets/css/theme-gitea-auto.css?v=1.25.5">

</head>
<body>
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		<nav class="ui secondary menu">
			<div class="ui container tw-flex">
				<div class="item tw-flex-1">
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						<img width="30" height="30" src="/assets/img/logo.svg" alt="Logo" aria-hidden="true">
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				<div class="item">
					<button class="ui icon button disabled"><svg viewBox="0 0 16 16" class="svg octicon-three-bars" aria-hidden="true" width="16" height="16"><path d="M1 2.75A.75.75 0 0 1 1.75 2h12.5a.75.75 0 0 1 0 1.5H1.75A.75.75 0 0 1 1 2.75m0 5A.75.75 0 0 1 1.75 7h12.5a.75.75 0 0 1 0 1.5H1.75A.75.75 0 0 1 1 7.75M1.75 12h12.5a.75.75 0 0 1 0 1.5H1.75a.75.75 0 0 1 0-1.5"/></svg></button>
				</div>
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		</nav>
		<div class="divider tw-my-0"></div>
		<div role="main" class="page-content status-page-500">
			<div class="ui container" >
				<style> .ui.message.flash-message { text-align: left; } </style>
				
				<div class="status-page-error">
					<div class="status-page-error-title">500 Internal Server Error</div>
					
					<div class="tw-mt-8 tw-text-center">
						<p>Gitea Version: 1.25.5</p>
						
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