0.5.12

插件市场UI优化

.github/workflows/airappmarket-validate.yml

@@ -0,0 +1,27 @@
+name: AirAppMarket Validate
+
+on:
+  push:
+    paths:
+      - "airappmarket/**"
+      - ".github/workflows/airappmarket-validate.yml"
+  pull_request:
+    paths:
+      - "airappmarket/**"
+      - ".github/workflows/airappmarket-validate.yml"
+
+jobs:
+  validate:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Setup .NET
+        uses: actions/setup-dotnet@v4
+        with:
+          dotnet-version: "10.0.x"
+
+      - name: Validate AirAppMarket index
+        run: dotnet run --project airappmarket/tools/AirAppMarket.Validator -- airappmarket/index.json airappmarket/schema/airappmarket-index.schema.json

.gitignore

@@ -484,3 +484,11 @@ nul
 /publish-test
 /_build_verify
 /_build_verify_tray
+/_build_verify_plugin
+/_build_verify_plugin_tabs
+/_build_verify_sample_plugin
+/_build_verify_sample_plugin_capabilities
+/_build_verify_plugin_page_host
+/_build_verify_plugin_services
+/LanMountainDesktop.PluginSdk/_build_verify_*/
+/_build_obj

LanAirApp/README.md

@@ -0,0 +1,21 @@
+# LanAirApp
+
+## 中文
+
+`LanAirApp` 是阑山桌面插件生态的对外工作区。这个目录是宿主仓库中的镜像副本，权威版本以独立 `LanAirApp` 仓库为准。
+
+### 目录说明
+
+- `docs/`：插件开发与打包文档。
+- `samples/`：示例插件与参考项目。
+- `standards/`：插件清单和目录结构约定。
+- `tools/`：插件打包与辅助工具。
+
+### 与宿主的关系
+
+- 宿主程序只连接独立 `LanAirApp` 仓库中的官方市场索引。
+- 每个插件项目应在仓库根目录提供 `.laapp` 和 `README.md`。
+
+## English
+
+`LanAirApp` is the external-facing workspace for the LanMountainDesktop plugin ecosystem. This copy is only a mirror inside the host repository; the standalone `LanAirApp` repository remains the source of truth.

LanAirApp/docs/PLUGIN_DEVELOPMENT.md

@@ -0,0 +1,16 @@
+# 插件开发指南
+
+## 中文
+
+使用 `LanMountainDesktop.PluginSdk` 开发插件时，至少需要准备：
+
+- `plugin.json`
+- 插件入口程序集
+- 入口类
+- 本地化资源
+
+推荐从示例插件开始，先完成清单、入口、设置页和桌面组件，再逐步扩展业务逻辑。
+
+## English
+
+To build a plugin with `LanMountainDesktop.PluginSdk`, prepare the manifest, plugin assembly, entrance class, and localization resources first.

LanAirApp/docs/PLUGIN_PACKAGING.md

@@ -0,0 +1,14 @@
+# 插件打包指南
+
+## 中文
+
+阑山桌面插件的标准安装格式为 `.laapp`。插件项目应在仓库根目录提供：
+
+- `.laapp` 安装包
+- `README.md`
+
+官方市场索引只负责记录链接和校验信息。
+
+## English
+
+The standard package format is `.laapp`. Plugin repositories should keep the package and `README.md` in the repository root, while the official market index stores metadata and validation data.

LanAirApp/samples/LanMountainDesktop.SamplePlugin/LanMountainDesktop.SamplePlugin.csproj

@@ -0,0 +1,30 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net10.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+    <Version>1.0.0</Version>
+    <EnableDynamicLoading>true</EnableDynamicLoading>
+    <OutputPath>bin\$(Configuration)\$(TargetFramework)\content\</OutputPath>
+    <AppendTargetFrameworkToOutputPath>false</AppendTargetFrameworkToOutputPath>
+    <AppendRuntimeIdentifierToOutputPath>false</AppendRuntimeIdentifierToOutputPath>
+    <PluginPackageOutputDirectory>..\..\..\LanMountainDesktop\bin\$(Configuration)\$(TargetFramework)\Extensions\Plugins\</PluginPackageOutputDirectory>
+    <PluginPackagePath>$(PluginPackageOutputDirectory)$(AssemblyName).laapp</PluginPackagePath>
+    <LegacyLoosePluginOutputDirectory>..\..\..\LanMountainDesktop\bin\$(Configuration)\$(TargetFramework)\Extensions\Plugins\SamplePlugin\</LegacyLoosePluginOutputDirectory>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\..\..\LanMountainDesktop.PluginSdk\LanMountainDesktop.PluginSdk.csproj" Private="false" />
+    <None Include="plugin.json" CopyToOutputDirectory="PreserveNewest" />
+    <None Include="Localization\*.json" CopyToOutputDirectory="PreserveNewest" />
+  </ItemGroup>
+
+  <Target Name="CreateLaappPackage" AfterTargets="Build">
+    <MakeDir Directories="$(PluginPackageOutputDirectory)" />
+    <RemoveDir Directories="$(LegacyLoosePluginOutputDirectory)" />
+    <Delete Files="$(PluginPackagePath)" TreatErrorsAsWarnings="true" />
+    <ZipDirectory SourceDirectory="$(OutputPath)" DestinationFile="$(PluginPackagePath)" />
+  </Target>
+
+</Project>

LanAirApp/samples/LanMountainDesktop.SamplePlugin/Localization/en-US.json

@@ -0,0 +1,79 @@
+{
+  "settings.page_title": "Plugin Status",
+  "plugin.name": "LanMountain Sample Plugin",
+  "plugin.description": "Example plugin used to validate PluginSdk loading, services, communication, and localization.",
+  "widget.display_name": "Sample Plugin Status Clock",
+  "widget.category": "Plugins",
+  "settings.header.title": "Sample Plugin Capability Inspector",
+  "settings.section.info": "Plugin Info",
+  "settings.section.capabilities": "Accessible Capabilities",
+  "settings.section.status": "Live Runtime Status",
+  "settings.info.plugin_name": "Plugin Name",
+  "settings.info.plugin_id": "Plugin Id",
+  "settings.info.version": "Version",
+  "settings.info.author": "Author",
+  "settings.info.description": "Description",
+  "settings.info.plugin_directory": "Plugin Directory",
+  "settings.info.data_directory": "Data Directory",
+  "settings.info.host_application": "Host Application",
+  "settings.info.host_version": "Host Version",
+  "settings.info.sdk_api_version": "SDK API Version",
+  "settings.info.state_service_resolved": "State Service Resolved",
+  "settings.info.clock_service_resolved": "Clock Service Resolved",
+  "settings.info.message_bus_resolved": "Message Bus Resolved",
+  "settings.info.component_placed": "Component Placed",
+  "settings.info.placed_count": "Placed Count",
+  "settings.info.preview_count": "Preview Count",
+  "settings.info.placement_ids": "Placement Ids",
+  "settings.info.last_component_id": "Last Component Id",
+  "settings.info.last_cell_size": "Last Cell Size",
+  "settings.info.clock_service_time": "Clock Service Time",
+  "settings.status.updated_at": "Updated: {0}",
+  "status.frontend.title": "Frontend Status",
+  "status.component.title": "Component Status",
+  "status.backend.title": "Backend Status",
+  "status.service.title": "Clock Service",
+  "status.summary.pending": "Pending",
+  "status.summary.attached": "Attached",
+  "status.summary.healthy": "Healthy",
+  "status.summary.faulted": "Faulted",
+  "status.summary.placed": "Placed",
+  "status.summary.preview": "Preview",
+  "status.frontend.detail.pending": "Waiting for a plugin UI surface to connect.",
+  "status.frontend.detail.settings_connected": "Settings page is connected to plugin services and communication.",
+  "status.frontend.detail.widget_connected": "Widget surface is connected to plugin services and communication.",
+  "status.component.detail.pending": "No component instance has been created yet.",
+  "status.component.detail.none": "No component instance is active.",
+  "status.component.detail.preview": "Preview instances: {0}; no placed desktop instance is active yet.",
+  "status.component.detail.placed": "Placed count: {0}; preview count: {1}; placements: {2}",
+  "status.backend.detail.pending": "Plugin initialization is in progress.",
+  "status.backend.detail.log_written": "Initialization log written to: {0}",
+  "status.backend.detail.log_write_failed": "Initialization log write failed: {0}",
+  "status.service.detail.pending": "Clock service is not attached yet.",
+  "status.service.detail.attached": "Clock service was attached and is waiting for the first tick.",
+  "status.service.detail.running": "Clock service is running. Current service time: {0}",
+  "status.service.detail.write_failed": "Clock state write failed: {0}",
+  "capability.manifest.title": "IPluginContext.Manifest",
+  "capability.manifest.detail": "Readable. Current plugin id: {0}; version: {1}.",
+  "capability.directories.title": "IPluginContext.PluginDirectory / DataDirectory",
+  "capability.directories.detail": "Readable. Plugin directory: {0}; data directory: {1}.",
+  "capability.properties.title": "IPluginContext.Properties",
+  "capability.properties.detail": "Readable. Host properties currently exposed: {0}.",
+  "capability.get_service.title": "IPluginContext.GetService<T>()",
+  "capability.get_service.detail": "Callable. State service resolved: {0}; clock service resolved: {1}; message bus resolved: {2}.",
+  "capability.register_service.title": "IPluginContext.RegisterService<TService>()",
+  "capability.register_service.detail": "Callable during plugin initialization. This sample plugin registers SamplePluginRuntimeStateService and SamplePluginClockService into the plugin service container.",
+  "capability.message_bus.title": "Plugin Communication Bus",
+  "capability.message_bus.detail": "This sample plugin uses IPluginMessageBus to push clock ticks and state change notifications into plugin UI surfaces.",
+  "capability.widget_context.title": "PluginDesktopComponentContext",
+  "capability.widget_context.detail": "Widgets can read ComponentId, PlacementId, CellSize, and call GetService<T>() against the same plugin service container.",
+  "widget.subtitle.preview": "Preview surface | placed: {0}",
+  "widget.subtitle.placement": "Placement {0} | placed: {1}",
+  "common.dev": "dev",
+  "common.none": "(none)",
+  "common.unknown": "(unknown)",
+  "common.true": "true",
+  "common.false": "false",
+  "common.yes": "Yes",
+  "common.no": "No"
+}

LanAirApp/samples/LanMountainDesktop.SamplePlugin/Localization/zh-CN.json

@@ -0,0 +1,79 @@
+{
+  "settings.page_title": "插件状态",
+  "plugin.name": "阑山示例插件",
+  "plugin.description": "用于验证 PluginSdk 加载、服务、通信与本地化能力的示例插件。",
+  "widget.display_name": "示例插件状态时钟",
+  "widget.category": "插件",
+  "settings.header.title": "示例插件能力检查器",
+  "settings.section.info": "插件信息",
+  "settings.section.capabilities": "可访问能力",
+  "settings.section.status": "实时运行状态",
+  "settings.info.plugin_name": "插件名称",
+  "settings.info.plugin_id": "插件 Id",
+  "settings.info.version": "版本",
+  "settings.info.author": "作者",
+  "settings.info.description": "描述",
+  "settings.info.plugin_directory": "插件目录",
+  "settings.info.data_directory": "数据目录",
+  "settings.info.host_application": "宿主应用",
+  "settings.info.host_version": "宿主版本",
+  "settings.info.sdk_api_version": "SDK API 版本",
+  "settings.info.state_service_resolved": "状态服务已解析",
+  "settings.info.clock_service_resolved": "时钟服务已解析",
+  "settings.info.message_bus_resolved": "消息总线已解析",
+  "settings.info.component_placed": "组件是否已放置",
+  "settings.info.placed_count": "已放置数量",
+  "settings.info.preview_count": "预览数量",
+  "settings.info.placement_ids": "放置位置 Id",
+  "settings.info.last_component_id": "最近组件 Id",
+  "settings.info.last_cell_size": "最近单元尺寸",
+  "settings.info.clock_service_time": "时钟服务时间",
+  "settings.status.updated_at": "更新时间：{0}",
+  "status.frontend.title": "前端状态",
+  "status.component.title": "组件状态",
+  "status.backend.title": "后端状态",
+  "status.service.title": "时钟服务",
+  "status.summary.pending": "等待中",
+  "status.summary.attached": "已挂接",
+  "status.summary.healthy": "正常",
+  "status.summary.faulted": "异常",
+  "status.summary.placed": "已放置",
+  "status.summary.preview": "预览中",
+  "status.frontend.detail.pending": "等待插件界面接入。",
+  "status.frontend.detail.settings_connected": "设置页已接入插件服务与通信。",
+  "status.frontend.detail.widget_connected": "组件界面已接入插件服务与通信。",
+  "status.component.detail.pending": "当前还没有创建组件实例。",
+  "status.component.detail.none": "当前没有活动中的组件实例。",
+  "status.component.detail.preview": "当前预览实例数量：{0}；尚未有已放置的桌面实例。",
+  "status.component.detail.placed": "已放置数量：{0}；预览数量：{1}；放置位置：{2}",
+  "status.backend.detail.pending": "插件初始化进行中。",
+  "status.backend.detail.log_written": "初始化日志已写入：{0}",
+  "status.backend.detail.log_write_failed": "初始化日志写入失败：{0}",
+  "status.service.detail.pending": "时钟服务尚未挂接。",
+  "status.service.detail.attached": "时钟服务已挂接，正在等待第一次心跳。",
+  "status.service.detail.running": "时钟服务运行中，当前服务时间：{0}",
+  "status.service.detail.write_failed": "时钟状态写入失败：{0}",
+  "capability.manifest.title": "IPluginContext.Manifest",
+  "capability.manifest.detail": "可读取。当前插件 id：{0}；版本：{1}。",
+  "capability.directories.title": "IPluginContext.PluginDirectory / DataDirectory",
+  "capability.directories.detail": "可读取。插件目录：{0}；数据目录：{1}。",
+  "capability.properties.title": "IPluginContext.Properties",
+  "capability.properties.detail": "可读取。宿主当前暴露的属性：{0}。",
+  "capability.get_service.title": "IPluginContext.GetService<T>()",
+  "capability.get_service.detail": "可调用。状态服务已解析：{0}；时钟服务已解析：{1}；消息总线已解析：{2}。",
+  "capability.register_service.title": "IPluginContext.RegisterService<TService>()",
+  "capability.register_service.detail": "可在插件初始化阶段调用。这个示例插件会把 SamplePluginRuntimeStateService 和 SamplePluginClockService 注册进插件服务容器。",
+  "capability.message_bus.title": "插件通信总线",
+  "capability.message_bus.detail": "这个示例插件通过 IPluginMessageBus 向插件 UI 推送时钟心跳和状态变化通知。",
+  "capability.widget_context.title": "PluginDesktopComponentContext",
+  "capability.widget_context.detail": "组件可以读取 ComponentId、PlacementId、CellSize，并能在同一个插件服务容器上调用 GetService<T>()。",
+  "widget.subtitle.preview": "预览界面 | 已放置：{0}",
+  "widget.subtitle.placement": "位置 {0} | 已放置：{1}",
+  "common.dev": "开发版",
+  "common.none": "（无）",
+  "common.unknown": "（未知）",
+  "common.true": "是",
+  "common.false": "否",
+  "common.yes": "是",
+  "common.no": "否"
+}

LanAirApp/samples/LanMountainDesktop.SamplePlugin/README.md

@@ -0,0 +1,9 @@
+# LanMountainDesktop.SamplePlugin
+
+## 中文
+
+这是阑山桌面的标准示例插件，用于演示插件清单、设置页、桌面组件、服务注册、本地化和 `.laapp` 打包流程。
+
+## English
+
+This is the standard sample plugin used to demonstrate manifests, settings pages, desktop components, service registration, localization, and `.laapp` packaging.

LanAirApp/samples/LanMountainDesktop.SamplePlugin/SamplePlugin.cs

@@ -0,0 +1,92 @@
+using LanMountainDesktop.PluginSdk;
+
+namespace LanMountainDesktop.SamplePlugin;
+
+[PluginEntrance]
+public sealed class SamplePlugin : PluginBase, IDisposable
+{
+    private SamplePluginRuntimeStateService? _stateService;
+    private SamplePluginClockService? _clockService;
+
+    public override void Initialize(IPluginContext context)
+    {
+        Directory.CreateDirectory(context.DataDirectory);
+        var localizer = PluginLocalizer.Create(context);
+
+        var hostName = GetHostProperty(context, PluginHostPropertyKeys.HostApplicationName, "UnknownHost");
+        var hostVersion = GetHostProperty(context, PluginHostPropertyKeys.HostVersion, "UnknownVersion");
+        var sdkApiVersion = GetHostProperty(context, PluginHostPropertyKeys.PluginSdkApiVersion, "UnknownApiVersion");
+        var messageBus = context.GetService<IPluginMessageBus>()
+            ?? throw new InvalidOperationException("Plugin message bus is not available.");
+
+        _stateService = new SamplePluginRuntimeStateService(
+            context.Manifest,
+            context.PluginDirectory,
+            context.DataDirectory,
+            hostName,
+            hostVersion,
+            sdkApiVersion,
+            messageBus,
+            localizer);
+        context.RegisterService(_stateService);
+
+        _clockService = new SamplePluginClockService(context.DataDirectory, _stateService, messageBus, localizer);
+        context.RegisterService(_clockService);
+        _stateService.AttachClockService(_clockService);
+
+        var logPath = Path.Combine(context.DataDirectory, "sample-plugin.log");
+        var initMessage =
+            $"[{DateTimeOffset.UtcNow:O}] {context.Manifest.Name} initialized in {hostName} (plugin version {context.Manifest.Version ?? "dev"}).";
+
+        try
+        {
+            File.AppendAllText(logPath, initMessage + Environment.NewLine);
+            _stateService.MarkBackendReady(localizer.Format(
+                "status.backend.detail.log_written",
+                "初始化日志已写入：{0}",
+                logPath));
+        }
+        catch (Exception ex)
+        {
+            _stateService.MarkBackendFaulted(localizer.Format(
+                "status.backend.detail.log_write_failed",
+                "初始化日志写入失败：{0}",
+                ex.Message));
+            throw;
+        }
+
+        _clockService.Start();
+
+        context.RegisterSettingsPage(new PluginSettingsPageRegistration(
+            "status",
+            localizer.GetString("settings.page_title", "插件状态"),
+            () => new SamplePluginSettingsView(context)));
+
+        context.RegisterDesktopComponent(new PluginDesktopComponentRegistration(
+            "LanMountainDesktop.SamplePlugin.StatusClock",
+            localizer.GetString("widget.display_name", "示例插件状态时钟"),
+            widgetContext => new SamplePluginStatusClockWidget(widgetContext),
+            iconKey: "PuzzlePiece",
+            category: localizer.GetString("widget.category", "插件"),
+            minWidthCells: 4,
+            minHeightCells: 4,
+            allowDesktopPlacement: true,
+            allowStatusBarPlacement: false,
+            resizeMode: PluginDesktopComponentResizeMode.Proportional,
+            cornerRadiusResolver: cellSize => Math.Clamp(cellSize * 0.34, 18, 34)));
+    }
+
+    public void Dispose()
+    {
+        _clockService?.Dispose();
+        _clockService = null;
+        _stateService = null;
+    }
+
+    private static string GetHostProperty(IPluginContext context, string key, string fallback)
+    {
+        return context.TryGetProperty<string>(key, out var value) && !string.IsNullOrWhiteSpace(value)
+            ? value
+            : fallback;
+    }
+}

LanAirApp/samples/LanMountainDesktop.SamplePlugin/SamplePluginRuntimeStatus.cs

@@ -0,0 +1,524 @@
+using System.Globalization;
+using System.IO;
+using System.Linq;
+using System.Threading;
+using LanMountainDesktop.PluginSdk;
+
+namespace LanMountainDesktop.SamplePlugin;
+
+internal enum SamplePluginHealthState
+{
+    Healthy,
+    Pending,
+    Faulted
+}
+
+internal sealed record SamplePluginStatusEntry(
+    string Key,
+    string Title,
+    SamplePluginHealthState State,
+    string Summary,
+    string Detail,
+    DateTimeOffset UpdatedAt);
+
+internal sealed record SamplePluginCapabilityItem(
+    string Title,
+    string Detail);
+
+internal sealed record SamplePluginRuntimeSnapshot(
+    PluginManifest Manifest,
+    string PluginDirectory,
+    string DataDirectory,
+    string HostApplicationName,
+    string HostVersion,
+    string SdkApiVersion,
+    IReadOnlyList<SamplePluginStatusEntry> StatusEntries,
+    bool HasPlacedComponent,
+    int PlacedCount,
+    int PreviewCount,
+    IReadOnlyList<string> PlacementIds,
+    string? LastComponentId,
+    double LastCellSize,
+    DateTimeOffset? ServiceClockTime);
+
+internal sealed record SamplePluginClockTickMessage(DateTimeOffset CurrentTime);
+
+internal sealed record SamplePluginStateChangedMessage(string Reason);
+
+internal sealed record SamplePluginComponentInstance(
+    string ComponentId,
+    string? PlacementId,
+    double CellSize)
+{
+    public bool IsPlaced => !string.IsNullOrWhiteSpace(PlacementId);
+}
+
+internal sealed class SamplePluginRuntimeStateService
+{
+    private readonly object _gate = new();
+    private readonly IPluginMessageBus _messageBus;
+    private readonly Dictionary<string, SamplePluginComponentInstance> _componentInstances =
+        new(StringComparer.OrdinalIgnoreCase);
+
+    private readonly PluginManifest _manifest;
+    private readonly string _pluginDirectory;
+    private readonly string _dataDirectory;
+    private readonly string _hostApplicationName;
+    private readonly string _hostVersion;
+    private readonly string _sdkApiVersion;
+    private readonly PluginLocalizer _localizer;
+
+    private SamplePluginStatusEntry _frontend;
+    private SamplePluginStatusEntry _component;
+    private SamplePluginStatusEntry _backend;
+    private SamplePluginStatusEntry _service;
+    private string? _lastComponentId;
+    private double _lastCellSize;
+    private DateTimeOffset? _serviceClockTime;
+
+    public SamplePluginRuntimeStateService(
+        PluginManifest manifest,
+        string pluginDirectory,
+        string dataDirectory,
+        string hostApplicationName,
+        string hostVersion,
+        string sdkApiVersion,
+        IPluginMessageBus messageBus,
+        PluginLocalizer localizer)
+    {
+        _manifest = manifest;
+        _pluginDirectory = pluginDirectory;
+        _dataDirectory = dataDirectory;
+        _hostApplicationName = hostApplicationName;
+        _hostVersion = hostVersion;
+        _sdkApiVersion = sdkApiVersion;
+        _messageBus = messageBus;
+        _localizer = localizer;
+
+        _frontend = CreateEntry(
+            "frontend",
+            T("status.frontend.title", "前端状态"),
+            SamplePluginHealthState.Pending,
+            T("status.summary.pending", "等待中"),
+            T("status.frontend.detail.pending", "等待插件界面接入。"));
+
+        _component = CreateEntry(
+            "component",
+            T("status.component.title", "组件状态"),
+            SamplePluginHealthState.Pending,
+            T("status.summary.pending", "等待中"),
+            T("status.component.detail.pending", "当前还没有创建组件实例。"));
+
+        _backend = CreateEntry(
+            "backend",
+            T("status.backend.title", "后端状态"),
+            SamplePluginHealthState.Pending,
+            T("status.summary.pending", "等待中"),
+            T("status.backend.detail.pending", "插件初始化进行中。"));
+
+        _service = CreateEntry(
+            "service",
+            T("status.service.title", "时钟服务"),
+            SamplePluginHealthState.Pending,
+            T("status.summary.pending", "等待中"),
+            T("status.service.detail.pending", "时钟服务尚未挂接。"));
+    }
+
+    public void AttachClockService(SamplePluginClockService clockService)
+    {
+        ArgumentNullException.ThrowIfNull(clockService);
+
+        lock (_gate)
+        {
+            _serviceClockTime = clockService.CurrentTime;
+            _service = CreateEntry(
+                "service",
+                T("status.service.title", "时钟服务"),
+                SamplePluginHealthState.Pending,
+                T("status.summary.attached", "已挂接"),
+                T("status.service.detail.attached", "时钟服务已挂接，正在等待第一次心跳。"));
+        }
+
+        PublishStateChanged("Clock service attached");
+    }
+
+    public void MarkFrontendReady(string detail)
+    {
+        lock (_gate)
+        {
+            _frontend = CreateEntry(
+                "frontend",
+                T("status.frontend.title", "前端状态"),
+                SamplePluginHealthState.Healthy,
+                T("status.summary.healthy", "正常"),
+                detail);
+        }
+
+        PublishStateChanged("Frontend updated");
+    }
+
+    public void MarkBackendReady(string detail)
+    {
+        lock (_gate)
+        {
+            _backend = CreateEntry(
+                "backend",
+                T("status.backend.title", "后端状态"),
+                SamplePluginHealthState.Healthy,
+                T("status.summary.healthy", "正常"),
+                detail);
+        }
+
+        PublishStateChanged("Backend updated");
+    }
+
+    public void MarkBackendFaulted(string detail)
+    {
+        lock (_gate)
+        {
+            _backend = CreateEntry(
+                "backend",
+                T("status.backend.title", "后端状态"),
+                SamplePluginHealthState.Faulted,
+                T("status.summary.faulted", "异常"),
+                detail);
+        }
+
+        PublishStateChanged("Backend faulted");
+    }
+
+    public void MarkClockServiceTick(DateTimeOffset currentTime)
+    {
+        lock (_gate)
+        {
+            _serviceClockTime = currentTime;
+            _service = CreateEntry(
+                "service",
+                T("status.service.title", "时钟服务"),
+                SamplePluginHealthState.Healthy,
+                T("status.summary.healthy", "正常"),
+                Tf(
+                    "status.service.detail.running",
+                    "时钟服务运行中，当前服务时间：{0}",
+                    currentTime.LocalDateTime.ToString("HH:mm:ss")));
+        }
+
+        PublishStateChanged("Clock service tick");
+    }
+
+    public void MarkClockServiceFaulted(string detail)
+    {
+        lock (_gate)
+        {
+            _service = CreateEntry(
+                "service",
+                T("status.service.title", "时钟服务"),
+                SamplePluginHealthState.Faulted,
+                T("status.summary.faulted", "异常"),
+                detail);
+        }
+
+        PublishStateChanged("Clock service faulted");
+    }
+
+    public string RegisterComponentInstance(string componentId, string? placementId, double cellSize)
+    {
+        var instanceId = Guid.NewGuid().ToString("N");
+
+        lock (_gate)
+        {
+            _componentInstances[instanceId] = new SamplePluginComponentInstance(componentId, placementId, cellSize);
+            _lastComponentId = componentId;
+            _lastCellSize = cellSize;
+            UpdateComponentStatusNoLock();
+        }
+
+        PublishStateChanged("Component attached");
+        return instanceId;
+    }
+
+    public void UnregisterComponentInstance(string instanceId)
+    {
+        ArgumentException.ThrowIfNullOrWhiteSpace(instanceId);
+
+        var removed = false;
+        lock (_gate)
+        {
+            removed = _componentInstances.Remove(instanceId);
+            if (removed)
+            {
+                UpdateComponentStatusNoLock();
+            }
+        }
+
+        if (removed)
+        {
+            PublishStateChanged("Component detached");
+        }
+    }
+
+    public SamplePluginRuntimeSnapshot GetSnapshot()
+    {
+        lock (_gate)
+        {
+            var placementIds = _componentInstances.Values
+                .Where(instance => instance.IsPlaced)
+                .Select(instance => instance.PlacementId!)
+                .Distinct(StringComparer.OrdinalIgnoreCase)
+                .OrderBy(id => id, StringComparer.OrdinalIgnoreCase)
+                .ToArray();
+
+            var previewCount = _componentInstances.Values.Count(instance => !instance.IsPlaced);
+
+            return new SamplePluginRuntimeSnapshot(
+                _manifest,
+                _pluginDirectory,
+                _dataDirectory,
+                _hostApplicationName,
+                _hostVersion,
+                _sdkApiVersion,
+                [_frontend, _component, _backend, _service],
+                placementIds.Length > 0,
+                placementIds.Length,
+                previewCount,
+                placementIds,
+                _lastComponentId,
+                _lastCellSize,
+                _serviceClockTime);
+        }
+    }
+
+    public IReadOnlyList<SamplePluginCapabilityItem> GetCapabilities(
+        IPluginContext context,
+        bool hasStateService,
+        bool hasClockService,
+        bool hasMessageBus)
+    {
+        ArgumentNullException.ThrowIfNull(context);
+
+        var propertyNames = context.Properties.Count == 0
+            ? T("common.none", "（无）")
+            : string.Join(", ", context.Properties.Keys.OrderBy(key => key, StringComparer.OrdinalIgnoreCase));
+
+        return
+        [
+            new SamplePluginCapabilityItem(
+                T("capability.manifest.title", "IPluginContext.Manifest"),
+                Tf(
+                    "capability.manifest.detail",
+                    "可读取。当前插件 id：{0}；版本：{1}。",
+                    context.Manifest.Id,
+                    context.Manifest.Version ?? T("common.dev", "开发版"))),
+            new SamplePluginCapabilityItem(
+                T("capability.directories.title", "IPluginContext.PluginDirectory / DataDirectory"),
+                Tf(
+                    "capability.directories.detail",
+                    "可读取。插件目录：{0}；数据目录：{1}。",
+                    context.PluginDirectory,
+                    context.DataDirectory)),
+            new SamplePluginCapabilityItem(
+                T("capability.properties.title", "IPluginContext.Properties"),
+                Tf(
+                    "capability.properties.detail",
+                    "可读取。宿主当前暴露的属性：{0}。",
+                    propertyNames)),
+            new SamplePluginCapabilityItem(
+                T("capability.get_service.title", "IPluginContext.GetService<T>()"),
+                Tf(
+                    "capability.get_service.detail",
+                    "可调用。状态服务已解析：{0}；时钟服务已解析：{1}；消息总线已解析：{2}。",
+                    FormatBoolean(hasStateService),
+                    FormatBoolean(hasClockService),
+                    FormatBoolean(hasMessageBus))),
+            new SamplePluginCapabilityItem(
+                T("capability.register_service.title", "IPluginContext.RegisterService<TService>()"),
+                T(
+                    "capability.register_service.detail",
+                    "可在插件初始化阶段调用。这个示例插件会把 SamplePluginRuntimeStateService 和 SamplePluginClockService 注册进插件服务容器。")),
+            new SamplePluginCapabilityItem(
+                T("capability.message_bus.title", "插件通信总线"),
+                T(
+                    "capability.message_bus.detail",
+                    "这个示例插件通过 IPluginMessageBus 向插件 UI 推送时钟心跳和状态变化通知。")),
+            new SamplePluginCapabilityItem(
+                T("capability.widget_context.title", "PluginDesktopComponentContext"),
+                T(
+                    "capability.widget_context.detail",
+                    "组件可以读取 ComponentId、PlacementId、CellSize，并能在同一个插件服务容器上调用 GetService<T>()。"))
+        ];
+    }
+
+    private void UpdateComponentStatusNoLock()
+    {
+        var placementIds = _componentInstances.Values
+            .Where(instance => instance.IsPlaced)
+            .Select(instance => instance.PlacementId!)
+            .Distinct(StringComparer.OrdinalIgnoreCase)
+            .OrderBy(id => id, StringComparer.OrdinalIgnoreCase)
+            .ToArray();
+
+        var previewCount = _componentInstances.Values.Count(instance => !instance.IsPlaced);
+
+        if (placementIds.Length > 0)
+        {
+            _component = CreateEntry(
+                "component",
+                T("status.component.title", "组件状态"),
+                SamplePluginHealthState.Healthy,
+                T("status.summary.placed", "已放置"),
+                Tf(
+                    "status.component.detail.placed",
+                    "已放置数量：{0}；预览数量：{1}；放置位置：{2}",
+                    placementIds.Length,
+                    previewCount,
+                    string.Join(", ", placementIds)));
+            return;
+        }
+
+        if (previewCount > 0)
+        {
+            _component = CreateEntry(
+                "component",
+                T("status.component.title", "组件状态"),
+                SamplePluginHealthState.Healthy,
+                T("status.summary.preview", "预览中"),
+                Tf(
+                    "status.component.detail.preview",
+                    "当前预览实例数量：{0}；尚未有已放置的桌面实例。",
+                    previewCount));
+            return;
+        }
+
+        _component = CreateEntry(
+            "component",
+            T("status.component.title", "组件状态"),
+            SamplePluginHealthState.Pending,
+            T("status.summary.pending", "等待中"),
+            T("status.component.detail.none", "当前没有活动中的组件实例。"));
+    }
+
+    private void PublishStateChanged(string reason)
+    {
+        _messageBus.Publish(new SamplePluginStateChangedMessage(reason));
+    }
+
+    private static SamplePluginStatusEntry CreateEntry(
+        string key,
+        string title,
+        SamplePluginHealthState state,
+        string summary,
+        string detail)
+    {
+        return new SamplePluginStatusEntry(
+            key,
+            title,
+            state,
+            summary,
+            detail,
+            DateTimeOffset.Now);
+    }
+
+    private string T(string key, string fallback)
+    {
+        return _localizer.GetString(key, fallback);
+    }
+
+    private string Tf(string key, string fallback, params object[] args)
+    {
+        return _localizer.Format(key, fallback, args);
+    }
+
+    private string FormatBoolean(bool value)
+    {
+        return value
+            ? T("common.true", "是")
+            : T("common.false", "否");
+    }
+}
+
+internal sealed class SamplePluginClockService : IDisposable
+{
+    private readonly object _gate = new();
+    private readonly string _clockStateFilePath;
+    private readonly SamplePluginRuntimeStateService _stateService;
+    private readonly IPluginMessageBus _messageBus;
+    private readonly PluginLocalizer _localizer;
+    private readonly Timer _timer;
+    private DateTimeOffset _currentTime = DateTimeOffset.Now;
+    private int _disposed;
+
+    public SamplePluginClockService(
+        string dataDirectory,
+        SamplePluginRuntimeStateService stateService,
+        IPluginMessageBus messageBus,
+        PluginLocalizer localizer)
+    {
+        _clockStateFilePath = Path.Combine(dataDirectory, "clock-service.txt");
+        _stateService = stateService;
+        _messageBus = messageBus;
+        _localizer = localizer;
+        _timer = new Timer(OnTimerTick);
+    }
+
+    public DateTimeOffset CurrentTime
+    {
+        get
+        {
+            lock (_gate)
+            {
+                return _currentTime;
+            }
+        }
+    }
+
+    public void Start()
+    {
+        PublishTick();
+        _timer.Change(TimeSpan.FromSeconds(1), TimeSpan.FromSeconds(1));
+    }
+
+    public void Dispose()
+    {
+        if (Interlocked.Exchange(ref _disposed, 1) != 0)
+        {
+            return;
+        }
+
+        _timer.Dispose();
+    }
+
+    private void OnTimerTick(object? state)
+    {
+        PublishTick();
+    }
+
+    private void PublishTick()
+    {
+        if (Volatile.Read(ref _disposed) != 0)
+        {
+            return;
+        }
+
+        var now = DateTimeOffset.Now;
+        lock (_gate)
+        {
+            _currentTime = now;
+        }
+
+        try
+        {
+            File.WriteAllText(
+                _clockStateFilePath,
+                now.ToString("O", CultureInfo.InvariantCulture));
+            _stateService.MarkClockServiceTick(now);
+            _messageBus.Publish(new SamplePluginClockTickMessage(now));
+        }
+        catch (Exception ex)
+        {
+            _stateService.MarkClockServiceFaulted(_localizer.Format(
+                "status.service.detail.write_failed",
+                "时钟状态写入失败：{0}",
+                ex.Message));
+        }
+    }
+}

LanAirApp/samples/LanMountainDesktop.SamplePlugin/SamplePluginSettingsView.cs

@@ -0,0 +1,374 @@
+using Avalonia;
+using Avalonia.Controls;
+using Avalonia.Layout;
+using Avalonia.Media;
+using Avalonia.Threading;
+using LanMountainDesktop.PluginSdk;
+
+namespace LanMountainDesktop.SamplePlugin;
+
+internal sealed class SamplePluginSettingsView : UserControl
+{
+    private readonly IPluginContext _context;
+    private readonly PluginLocalizer _localizer;
+    private readonly SamplePluginRuntimeStateService _stateService;
+    private readonly SamplePluginClockService _clockService;
+    private readonly IPluginMessageBus _messageBus;
+    private readonly StackPanel _pluginInfoPanel = new() { Spacing = 8 };
+    private readonly StackPanel _capabilityPanel = new() { Spacing = 8 };
+    private readonly StackPanel _statusPanel = new() { Spacing = 10 };
+    private readonly List<IDisposable> _subscriptions = [];
+
+    public SamplePluginSettingsView(IPluginContext context)
+    {
+        _context = context;
+        _localizer = PluginLocalizer.Create(context);
+        _stateService = context.GetService<SamplePluginRuntimeStateService>()
+            ?? throw new InvalidOperationException("SamplePluginRuntimeStateService is not available.");
+        _clockService = context.GetService<SamplePluginClockService>()
+            ?? throw new InvalidOperationException("SamplePluginClockService is not available.");
+        _messageBus = context.GetService<IPluginMessageBus>()
+            ?? throw new InvalidOperationException("IPluginMessageBus is not available.");
+
+        _stateService.MarkFrontendReady(T(
+            "status.frontend.detail.settings_connected",
+            "设置页已接入插件服务与通信。"));
+
+        AttachedToVisualTree += OnAttachedToVisualTree;
+        DetachedFromVisualTree += OnDetachedFromVisualTree;
+
+        Content = new Border
+        {
+            Background = new LinearGradientBrush
+            {
+                StartPoint = new RelativePoint(0, 0, RelativeUnit.Relative),
+                EndPoint = new RelativePoint(1, 1, RelativeUnit.Relative),
+                GradientStops =
+                [
+                    new GradientStop(Color.Parse("#1F0B1120"), 0),
+                    new GradientStop(Color.Parse("#260C4A6E"), 1)
+                ]
+            },
+            BorderBrush = new SolidColorBrush(Color.Parse("#6628B2FF")),
+            BorderThickness = new Thickness(1),
+            CornerRadius = new CornerRadius(18),
+            Padding = new Thickness(18),
+            Child = new StackPanel
+            {
+                Spacing = 14,
+                Children =
+                {
+                    new TextBlock
+                    {
+                        Text = T("settings.header.title", "示例插件能力检查器"),
+                        FontSize = 22,
+                        FontWeight = FontWeight.SemiBold,
+                        Foreground = Brushes.White
+                    },
+                    CreateSection(T("settings.section.info", "插件信息"), _pluginInfoPanel),
+                    CreateSection(T("settings.section.capabilities", "可访问能力"), _capabilityPanel),
+                    CreateSection(T("settings.section.status", "实时运行状态"), _statusPanel)
+                }
+            }
+        };
+
+        RefreshView();
+    }
+
+    private void OnAttachedToVisualTree(object? sender, VisualTreeAttachmentEventArgs e)
+    {
+        SubscribeToPluginBus();
+        RefreshView();
+    }
+
+    private void OnDetachedFromVisualTree(object? sender, VisualTreeAttachmentEventArgs e)
+    {
+        foreach (var subscription in _subscriptions)
+        {
+            subscription.Dispose();
+        }
+
+        _subscriptions.Clear();
+    }
+
+    private void SubscribeToPluginBus()
+    {
+        if (_subscriptions.Count > 0)
+        {
+            return;
+        }
+
+        _subscriptions.Add(_messageBus.Subscribe<SamplePluginClockTickMessage>(_ =>
+            Dispatcher.UIThread.Post(RefreshView)));
+
+        _subscriptions.Add(_messageBus.Subscribe<SamplePluginStateChangedMessage>(_ =>
+            Dispatcher.UIThread.Post(RefreshView)));
+    }
+
+    private void RefreshView()
+    {
+        var snapshot = _stateService.GetSnapshot();
+        RefreshPluginInfo(snapshot);
+        RefreshCapabilities();
+        RefreshStatuses(snapshot);
+    }
+
+    private void RefreshPluginInfo(SamplePluginRuntimeSnapshot snapshot)
+    {
+        _pluginInfoPanel.Children.Clear();
+        _pluginInfoPanel.Children.Add(CreateInfoLine(
+            T("settings.info.plugin_name", "插件名称"),
+            T("plugin.name", snapshot.Manifest.Name)));
+        _pluginInfoPanel.Children.Add(CreateInfoLine(T("settings.info.plugin_id", "插件 Id"), snapshot.Manifest.Id));
+        _pluginInfoPanel.Children.Add(CreateInfoLine(T("settings.info.version", "版本"), snapshot.Manifest.Version ?? T("common.dev", "开发版")));
+        _pluginInfoPanel.Children.Add(CreateInfoLine(T("settings.info.author", "作者"), snapshot.Manifest.Author ?? T("common.none", "（无）")));
+        _pluginInfoPanel.Children.Add(CreateInfoLine(
+            T("settings.info.description", "描述"),
+            T("plugin.description", snapshot.Manifest.Description ?? T("common.none", "（无）"))));
+        _pluginInfoPanel.Children.Add(CreateInfoLine(T("settings.info.plugin_directory", "插件目录"), snapshot.PluginDirectory));
+        _pluginInfoPanel.Children.Add(CreateInfoLine(T("settings.info.data_directory", "数据目录"), snapshot.DataDirectory));
+        _pluginInfoPanel.Children.Add(CreateInfoLine(T("settings.info.host_application", "宿主应用"), snapshot.HostApplicationName));
+        _pluginInfoPanel.Children.Add(CreateInfoLine(T("settings.info.host_version", "宿主版本"), snapshot.HostVersion));
+        _pluginInfoPanel.Children.Add(CreateInfoLine(T("settings.info.sdk_api_version", "SDK API 版本"), snapshot.SdkApiVersion));
+        _pluginInfoPanel.Children.Add(CreateInfoLine(
+            T("settings.info.state_service_resolved", "状态服务已解析"),
+            FormatBoolean(_context.GetService<SamplePluginRuntimeStateService>() is not null)));
+        _pluginInfoPanel.Children.Add(CreateInfoLine(
+            T("settings.info.clock_service_resolved", "时钟服务已解析"),
+            FormatBoolean(_context.GetService<SamplePluginClockService>() is not null)));
+        _pluginInfoPanel.Children.Add(CreateInfoLine(
+            T("settings.info.message_bus_resolved", "消息总线已解析"),
+            FormatBoolean(_context.GetService<IPluginMessageBus>() is not null)));
+        _pluginInfoPanel.Children.Add(CreateInfoLine(
+            T("settings.info.component_placed", "组件是否已放置"),
+            snapshot.HasPlacedComponent ? T("common.yes", "是") : T("common.no", "否")));
+        _pluginInfoPanel.Children.Add(CreateInfoLine(T("settings.info.placed_count", "已放置数量"), snapshot.PlacedCount.ToString()));
+        _pluginInfoPanel.Children.Add(CreateInfoLine(T("settings.info.preview_count", "预览数量"), snapshot.PreviewCount.ToString()));
+        _pluginInfoPanel.Children.Add(CreateInfoLine(
+            T("settings.info.placement_ids", "放置位置 Id"),
+            snapshot.PlacementIds.Count == 0 ? T("common.none", "（无）") : string.Join(", ", snapshot.PlacementIds)));
+        _pluginInfoPanel.Children.Add(CreateInfoLine(
+            T("settings.info.last_component_id", "最近组件 Id"),
+            snapshot.LastComponentId ?? T("common.none", "（无）")));
+        _pluginInfoPanel.Children.Add(CreateInfoLine(
+            T("settings.info.last_cell_size", "最近单元尺寸"),
+            snapshot.LastCellSize > 0 ? $"{snapshot.LastCellSize:F0}px" : T("common.unknown", "（未知）")));
+        _pluginInfoPanel.Children.Add(CreateInfoLine(
+            T("settings.info.clock_service_time", "时钟服务时间"),
+            _clockService.CurrentTime.LocalDateTime.ToString("HH:mm:ss")));
+    }
+
+    private void RefreshCapabilities()
+    {
+        var capabilities = _stateService.GetCapabilities(
+            _context,
+            _context.GetService<SamplePluginRuntimeStateService>() is not null,
+            _context.GetService<SamplePluginClockService>() is not null,
+            _context.GetService<IPluginMessageBus>() is not null);
+
+        _capabilityPanel.Children.Clear();
+        foreach (var capability in capabilities)
+        {
+            _capabilityPanel.Children.Add(CreateCapabilityCard(capability));
+        }
+    }
+
+    private void RefreshStatuses(SamplePluginRuntimeSnapshot snapshot)
+    {
+        _statusPanel.Children.Clear();
+
+        foreach (var entry in snapshot.StatusEntries)
+        {
+            var palette = GetPalette(entry.State);
+            _statusPanel.Children.Add(new Border
+            {
+                Background = new SolidColorBrush(palette.Background),
+                BorderBrush = new SolidColorBrush(palette.Border),
+                BorderThickness = new Thickness(1),
+                CornerRadius = new CornerRadius(12),
+                Padding = new Thickness(12, 10),
+                Child = new StackPanel
+                {
+                    Spacing = 4,
+                    Children =
+                    {
+                        CreateStatusHeader(entry, palette),
+                        new TextBlock
+                        {
+                            Text = entry.Detail,
+                            Foreground = new SolidColorBrush(Color.Parse("#FFE0F2FE")),
+                            TextWrapping = TextWrapping.Wrap
+                        },
+                        new TextBlock
+                        {
+                            Text = Tf("settings.status.updated_at", "更新时间：{0}", entry.UpdatedAt.LocalDateTime.ToString("HH:mm:ss")),
+                            Foreground = new SolidColorBrush(Color.Parse("#FF93C5FD"))
+                        }
+                    }
+                }
+            });
+        }
+    }
+
+    private Border CreateSection(string title, Control content)
+    {
+        return new Border
+        {
+            Background = new SolidColorBrush(Color.Parse("#14000000")),
+            BorderBrush = new SolidColorBrush(Color.Parse("#3328B2FF")),
+            BorderThickness = new Thickness(1),
+            CornerRadius = new CornerRadius(14),
+            Padding = new Thickness(14),
+            Child = new StackPanel
+            {
+                Spacing = 12,
+                Children =
+                {
+                    new TextBlock
+                    {
+                        Text = title,
+                        FontSize = 16,
+                        FontWeight = FontWeight.SemiBold,
+                        Foreground = Brushes.White
+                    },
+                    content
+                }
+            }
+        };
+    }
+
+    private Control CreateInfoLine(string label, string value)
+    {
+        var grid = new Grid
+        {
+            ColumnDefinitions = new ColumnDefinitions("180,*"),
+            ColumnSpacing = 10
+        };
+
+        var labelText = new TextBlock
+        {
+            Text = label,
+            Foreground = new SolidColorBrush(Color.Parse("#FFBAE6FD")),
+            FontWeight = FontWeight.SemiBold,
+            TextWrapping = TextWrapping.Wrap
+        };
+        var valueText = new TextBlock
+        {
+            Text = value,
+            Foreground = Brushes.White,
+            TextWrapping = TextWrapping.Wrap
+        };
+
+        grid.Children.Add(labelText);
+        grid.Children.Add(valueText);
+        Grid.SetColumn(valueText, 1);
+        return grid;
+    }
+
+    private Control CreateCapabilityCard(SamplePluginCapabilityItem item)
+    {
+        return new Border
+        {
+            Background = new SolidColorBrush(Color.Parse("#0F082F49")),
+            BorderBrush = new SolidColorBrush(Color.Parse("#3338BDF8")),
+            BorderThickness = new Thickness(1),
+            CornerRadius = new CornerRadius(12),
+            Padding = new Thickness(12, 10),
+            Child = new StackPanel
+            {
+                Spacing = 4,
+                Children =
+                {
+                    new TextBlock
+                    {
+                        Text = item.Title,
+                        Foreground = Brushes.White,
+                        FontWeight = FontWeight.SemiBold
+                    },
+                    new TextBlock
+                    {
+                        Text = item.Detail,
+                        Foreground = new SolidColorBrush(Color.Parse("#FFE0F2FE")),
+                        TextWrapping = TextWrapping.Wrap
+                    }
+                }
+            }
+        };
+    }
+
+    private static Control CreateStatusHeader(
+        SamplePluginStatusEntry entry,
+        (Color Background, Color Border, Color Dot) palette)
+    {
+        var grid = new Grid
+        {
+            ColumnDefinitions = new ColumnDefinitions("Auto,*,Auto"),
+            ColumnSpacing = 8
+        };
+
+        var dot = new Border
+        {
+            Width = 10,
+            Height = 10,
+            CornerRadius = new CornerRadius(999),
+            Background = new SolidColorBrush(palette.Dot),
+            VerticalAlignment = VerticalAlignment.Center
+        };
+        var title = new TextBlock
+        {
+            Text = entry.Title,
+            FontSize = 15,
+            FontWeight = FontWeight.SemiBold,
+            Foreground = Brushes.White
+        };
+        var summary = new TextBlock
+        {
+            Text = entry.Summary,
+            Foreground = new SolidColorBrush(Color.Parse("#FFD7F2FF")),
+            HorizontalAlignment = HorizontalAlignment.Right
+        };
+
+        grid.Children.Add(dot);
+        grid.Children.Add(title);
+        grid.Children.Add(summary);
+        Grid.SetColumn(title, 1);
+        Grid.SetColumn(summary, 2);
+        return grid;
+    }
+
+    private static (Color Background, Color Border, Color Dot) GetPalette(SamplePluginHealthState state)
+    {
+        return state switch
+        {
+            SamplePluginHealthState.Healthy => (
+                Color.Parse("#1F115E59"),
+                Color.Parse("#665EEAD4"),
+                Color.Parse("#5EEAD4")),
+            SamplePluginHealthState.Faulted => (
+                Color.Parse("#291B1B"),
+                Color.Parse("#66F87171"),
+                Color.Parse("#F87171")),
+            _ => (
+                Color.Parse("#2B3A2A0D"),
+                Color.Parse("#66FBBF24"),
+                Color.Parse("#FBBF24"))
+        };
+    }
+
+    private string T(string key, string fallback)
+    {
+        return _localizer.GetString(key, fallback);
+    }
+
+    private string Tf(string key, string fallback, params object[] args)
+    {
+        return _localizer.Format(key, fallback, args);
+    }
+
+    private string FormatBoolean(bool value)
+    {
+        return value
+            ? T("common.true", "是")
+            : T("common.false", "否");
+    }
+}

LanAirApp/samples/LanMountainDesktop.SamplePlugin/SamplePluginStatusClockWidget.cs

@@ -0,0 +1,298 @@
+using Avalonia;
+using Avalonia.Controls;
+using Avalonia.Layout;
+using Avalonia.Media;
+using Avalonia.Threading;
+using LanMountainDesktop.PluginSdk;
+
+namespace LanMountainDesktop.SamplePlugin;
+
+internal sealed class SamplePluginStatusClockWidget : Border
+{
+    private readonly PluginDesktopComponentContext _context;
+    private readonly PluginLocalizer _localizer;
+    private readonly SamplePluginRuntimeStateService _stateService;
+    private readonly SamplePluginClockService _clockService;
+    private readonly IPluginMessageBus _messageBus;
+    private readonly TextBlock _timeTextBlock;
+    private readonly TextBlock _subtitleTextBlock;
+    private readonly StackPanel _statusPanel;
+    private readonly Border _statusHost;
+    private readonly List<IDisposable> _subscriptions = [];
+    private string? _instanceId;
+
+    public SamplePluginStatusClockWidget(PluginDesktopComponentContext context)
+    {
+        _context = context;
+        _localizer = PluginLocalizer.Create(context);
+        _stateService = context.GetService<SamplePluginRuntimeStateService>()
+            ?? throw new InvalidOperationException("SamplePluginRuntimeStateService is not available.");
+        _clockService = context.GetService<SamplePluginClockService>()
+            ?? throw new InvalidOperationException("SamplePluginClockService is not available.");
+        _messageBus = context.GetService<IPluginMessageBus>()
+            ?? throw new InvalidOperationException("IPluginMessageBus is not available.");
+
+        _timeTextBlock = new TextBlock
+        {
+            Foreground = Brushes.White,
+            FontWeight = FontWeight.Bold,
+            HorizontalAlignment = HorizontalAlignment.Left
+        };
+        _subtitleTextBlock = new TextBlock
+        {
+            Foreground = new SolidColorBrush(Color.Parse("#FFBFE9FF")),
+            HorizontalAlignment = HorizontalAlignment.Left,
+            TextWrapping = TextWrapping.Wrap
+        };
+        _statusPanel = new StackPanel
+        {
+            Spacing = 8
+        };
+        _statusHost = new Border
+        {
+            Background = new SolidColorBrush(Color.Parse("#1F082F49")),
+            BorderBrush = new SolidColorBrush(Color.Parse("#5538BDF8")),
+            BorderThickness = new Thickness(1),
+            Child = _statusPanel
+        };
+
+        Background = new LinearGradientBrush
+        {
+            StartPoint = new RelativePoint(0, 0, RelativeUnit.Relative),
+            EndPoint = new RelativePoint(1, 1, RelativeUnit.Relative),
+            GradientStops =
+            [
+                new GradientStop(Color.Parse("#FF07111F"), 0),
+                new GradientStop(Color.Parse("#FF0C4A6E"), 0.55),
+                new GradientStop(Color.Parse("#FF0EA5E9"), 1)
+            ]
+        };
+        BorderBrush = new SolidColorBrush(Color.Parse("#6648C7FF"));
+        BorderThickness = new Thickness(1);
+        HorizontalAlignment = HorizontalAlignment.Stretch;
+        VerticalAlignment = VerticalAlignment.Stretch;
+        Child = new Grid
+        {
+            RowDefinitions = new RowDefinitions("Auto,*"),
+            RowSpacing = 14,
+            Children =
+            {
+                new StackPanel
+                {
+                    Spacing = 4,
+                    HorizontalAlignment = HorizontalAlignment.Left,
+                    Children =
+                    {
+                        _timeTextBlock,
+                        _subtitleTextBlock
+                    }
+                },
+                _statusHost
+            }
+        };
+
+        Grid.SetRow(((Grid)Child).Children[1], 1);
+
+        AttachedToVisualTree += OnAttachedToVisualTree;
+        DetachedFromVisualTree += OnDetachedFromVisualTree;
+        SizeChanged += OnSizeChanged;
+
+        RefreshClock(_clockService.CurrentTime);
+        UpdateSubtitle();
+        RefreshStatusPanel();
+        ApplyScale();
+    }
+
+    private void OnAttachedToVisualTree(object? sender, VisualTreeAttachmentEventArgs e)
+    {
+        if (string.IsNullOrWhiteSpace(_instanceId))
+        {
+            _instanceId = _stateService.RegisterComponentInstance(
+                _context.ComponentId,
+                _context.PlacementId,
+                _context.CellSize);
+        }
+
+        _stateService.MarkFrontendReady(T(
+            "status.frontend.detail.widget_connected",
+            "组件界面已接入插件服务与通信。"));
+        SubscribeToPluginBus();
+
+        RefreshClock(_clockService.CurrentTime);
+        UpdateSubtitle();
+        RefreshStatusPanel();
+    }
+
+    private void OnDetachedFromVisualTree(object? sender, VisualTreeAttachmentEventArgs e)
+    {
+        foreach (var subscription in _subscriptions)
+        {
+            subscription.Dispose();
+        }
+
+        _subscriptions.Clear();
+
+        if (string.IsNullOrWhiteSpace(_instanceId))
+        {
+            return;
+        }
+
+        _stateService.UnregisterComponentInstance(_instanceId);
+        _instanceId = null;
+    }
+
+    private void OnSizeChanged(object? sender, SizeChangedEventArgs e)
+    {
+        ApplyScale();
+        RefreshStatusPanel();
+    }
+
+    private void SubscribeToPluginBus()
+    {
+        if (_subscriptions.Count > 0)
+        {
+            return;
+        }
+
+        _subscriptions.Add(_messageBus.Subscribe<SamplePluginClockTickMessage>(message =>
+            Dispatcher.UIThread.Post(() => RefreshClock(message.CurrentTime))));
+
+        _subscriptions.Add(_messageBus.Subscribe<SamplePluginStateChangedMessage>(_ =>
+            Dispatcher.UIThread.Post(() =>
+            {
+                UpdateSubtitle();
+                RefreshStatusPanel();
+            })));
+    }
+
+    private void RefreshClock(DateTimeOffset currentTime)
+    {
+        _timeTextBlock.Text = currentTime.LocalDateTime.ToString("HH:mm:ss");
+    }
+
+    private void UpdateSubtitle()
+    {
+        var snapshot = _stateService.GetSnapshot();
+        _subtitleTextBlock.Text = string.IsNullOrWhiteSpace(_context.PlacementId)
+            ? Tf("widget.subtitle.preview", "预览界面 | 已放置：{0}", snapshot.PlacedCount)
+            : Tf("widget.subtitle.placement", "位置 {0} | 已放置：{1}", _context.PlacementId!, snapshot.PlacedCount);
+    }
+
+    private void RefreshStatusPanel()
+    {
+        _statusPanel.Children.Clear();
+
+        var snapshot = _stateService.GetSnapshot();
+        var basis = GetLayoutBasis();
+        var titleSize = Math.Clamp(basis * 0.068, 11, 16);
+        var detailSize = Math.Clamp(basis * 0.052, 9, 13);
+
+        foreach (var entry in snapshot.StatusEntries)
+        {
+            var palette = GetPalette(entry.State);
+            _statusPanel.Children.Add(new Border
+            {
+                Background = new SolidColorBrush(palette.Background),
+                BorderBrush = new SolidColorBrush(palette.Border),
+                BorderThickness = new Thickness(1),
+                CornerRadius = new CornerRadius(12),
+                Padding = new Thickness(10, 8),
+                Child = new Grid
+                {
+                    RowDefinitions = new RowDefinitions("Auto,Auto"),
+                    ColumnDefinitions = new ColumnDefinitions("Auto,*,Auto"),
+                    ColumnSpacing = 8,
+                    Children =
+                    {
+                        new Border
+                        {
+                            Width = Math.Clamp(basis * 0.038, 8, 11),
+                            Height = Math.Clamp(basis * 0.038, 8, 11),
+                            CornerRadius = new CornerRadius(999),
+                            Background = new SolidColorBrush(palette.Dot),
+                            VerticalAlignment = VerticalAlignment.Center
+                        },
+                        new TextBlock
+                        {
+                            Text = entry.Title,
+                            FontSize = titleSize,
+                            FontWeight = FontWeight.SemiBold,
+                            Foreground = Brushes.White,
+                            TextWrapping = TextWrapping.Wrap
+                        },
+                        new TextBlock
+                        {
+                            Text = entry.Summary,
+                            FontSize = detailSize,
+                            Foreground = new SolidColorBrush(Color.Parse("#FFD7F2FF")),
+                            HorizontalAlignment = HorizontalAlignment.Right,
+                            TextAlignment = TextAlignment.Right,
+                            VerticalAlignment = VerticalAlignment.Center
+                        },
+                        new TextBlock
+                        {
+                            Text = entry.Detail,
+                            FontSize = detailSize,
+                            Foreground = new SolidColorBrush(Color.Parse("#FFD7F2FF")),
+                            TextWrapping = TextWrapping.Wrap
+                        }
+                    }
+                }
+            });
+
+            var row = (Grid)((Border)_statusPanel.Children[^1]).Child!;
+            Grid.SetColumn(row.Children[1], 1);
+            Grid.SetColumn(row.Children[2], 2);
+            Grid.SetColumnSpan(row.Children[3], 3);
+            Grid.SetRow(row.Children[3], 1);
+        }
+    }
+
+    private void ApplyScale()
+    {
+        var basis = GetLayoutBasis();
+        Padding = new Thickness(Math.Clamp(basis * 0.09, 16, 26));
+        CornerRadius = new CornerRadius(Math.Clamp(basis * 0.14, 20, 34));
+        _timeTextBlock.FontSize = Math.Clamp(basis * 0.22, 30, 58);
+        _subtitleTextBlock.FontSize = Math.Clamp(basis * 0.062, 11, 17);
+        _statusHost.Padding = new Thickness(Math.Clamp(basis * 0.045, 10, 18));
+        _statusHost.CornerRadius = new CornerRadius(Math.Clamp(basis * 0.09, 14, 22));
+        _statusPanel.Spacing = Math.Clamp(basis * 0.024, 6, 10);
+    }
+
+    private double GetLayoutBasis()
+    {
+        var width = Bounds.Width > 1 ? Bounds.Width : _context.CellSize * 4;
+        var height = Bounds.Height > 1 ? Bounds.Height : _context.CellSize * 4;
+        return Math.Max(_context.CellSize * 4, Math.Min(width, height));
+    }
+
+    private static (Color Background, Color Border, Color Dot) GetPalette(SamplePluginHealthState state)
+    {
+        return state switch
+        {
+            SamplePluginHealthState.Healthy => (
+                Color.Parse("#1F0F766E"),
+                Color.Parse("#4D5EEAD4"),
+                Color.Parse("#5EEAD4")),
+            SamplePluginHealthState.Faulted => (
+                Color.Parse("#29B91C1C"),
+                Color.Parse("#66F87171"),
+                Color.Parse("#F87171")),
+            _ => (
+                Color.Parse("#1F7C2D12"),
+                Color.Parse("#66FDBA74"),
+                Color.Parse("#FDBA74"))
+        };
+    }
+
+    private string T(string key, string fallback)
+    {
+        return _localizer.GetString(key, fallback);
+    }
+
+    private string Tf(string key, string fallback, params object[] args)
+    {
+        return _localizer.Format(key, fallback, args);
+    }
+}

LanAirApp/samples/LanMountainDesktop.SamplePlugin/plugin.json

@@ -0,0 +1,9 @@
+{
+  "id": "LanMountainDesktop.SamplePlugin",
+  "name": "LanMountain Sample Plugin",
+  "description": "Example plugin used to validate PluginSdk loading and isolation.",
+  "author": "LanMountainDesktop",
+  "version": "1.0.0",
+  "apiVersion": "1.0.0",
+  "entranceAssembly": "LanMountainDesktop.SamplePlugin.dll"
+}

LanAirApp/samples/README.md

@@ -0,0 +1,11 @@
+# 示例插件目录
+
+## 中文
+
+本目录用于存放阑山桌面的示例插件和参考实现。
+
+当前标准示例为 `LanMountainDesktop.SamplePlugin`。
+
+## English
+
+This directory stores sample plugins and reference implementations. The current standard sample is `LanMountainDesktop.SamplePlugin`.

LanAirApp/standards/README.md

@@ -0,0 +1,9 @@
+# 插件标准说明
+
+## 中文
+
+本目录存放插件开发需要遵循的基础约定，包括 `.laapp`、`plugin.json`、`Localization/` 以及仓库根目录 README 和安装包等要求。
+
+## English
+
+This directory stores the baseline conventions for plugin development, including `.laapp`, `plugin.json`, `Localization/`, and repository-root deliverables.

LanAirApp/standards/plugin.template.json

@@ -0,0 +1,9 @@
+{
+  "id": "LanMountainDesktop.YourPlugin",
+  "name": "Your Plugin",
+  "description": "Describe what your plugin adds to LanMountainDesktop.",
+  "author": "Your Name",
+  "version": "1.0.0",
+  "apiVersion": "1.0.0",
+  "entranceAssembly": "LanMountainDesktop.YourPlugin.dll"
+}

LanAirApp/tools/LanMountainDesktop.PluginPackager/LanMountainDesktop.PluginPackager.csproj

@@ -0,0 +1,15 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net10.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+    <Version>1.0.0</Version>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\..\..\LanMountainDesktop.PluginSdk\LanMountainDesktop.PluginSdk.csproj" />
+  </ItemGroup>
+
+</Project>

LanAirApp/tools/LanMountainDesktop.PluginPackager/Program.cs

@@ -0,0 +1,136 @@
+using System.IO.Compression;
+using LanMountainDesktop.PluginSdk;
+
+return await RunAsync(args);
+
+static async Task<int> RunAsync(string[] args)
+{
+    if (args.Length == 0 || args.Any(arg => string.Equals(arg, "--help", StringComparison.OrdinalIgnoreCase)))
+    {
+        PrintUsage();
+        return 0;
+    }
+
+    string? inputDirectory = null;
+    string? outputPath = null;
+    var overwrite = false;
+
+    for (var i = 0; i < args.Length; i++)
+    {
+        switch (args[i])
+        {
+            case "--input":
+                inputDirectory = ReadValue(args, ref i, "--input");
+                break;
+            case "--output":
+                outputPath = ReadValue(args, ref i, "--output");
+                break;
+            case "--overwrite":
+                overwrite = true;
+                break;
+            default:
+                throw new InvalidOperationException($"Unknown argument '{args[i]}'.");
+        }
+    }
+
+    if (string.IsNullOrWhiteSpace(inputDirectory))
+    {
+        throw new InvalidOperationException("Missing required argument '--input'.");
+    }
+
+    var fullInputDirectory = Path.GetFullPath(inputDirectory);
+    if (!Directory.Exists(fullInputDirectory))
+    {
+        throw new DirectoryNotFoundException($"Plugin build directory '{fullInputDirectory}' was not found.");
+    }
+
+    var manifestPath = Path.Combine(fullInputDirectory, PluginSdkInfo.ManifestFileName);
+    if (!File.Exists(manifestPath))
+    {
+        throw new FileNotFoundException(
+            $"Plugin build directory '{fullInputDirectory}' does not contain '{PluginSdkInfo.ManifestFileName}'.",
+            manifestPath);
+    }
+
+    var manifest = PluginManifest.Load(manifestPath);
+    var entranceAssemblyPath = manifest.ResolveEntranceAssemblyPath(manifestPath);
+    if (!File.Exists(entranceAssemblyPath))
+    {
+        throw new FileNotFoundException(
+            $"The entrance assembly declared by '{PluginSdkInfo.ManifestFileName}' was not found.",
+            entranceAssemblyPath);
+    }
+
+    outputPath ??= Path.Combine(
+        Path.GetDirectoryName(fullInputDirectory) ?? fullInputDirectory,
+        BuildPackageFileName(manifest.Id));
+
+    var fullOutputPath = Path.GetFullPath(outputPath);
+    var inputDirectoryWithSeparator = EnsureTrailingSeparator(fullInputDirectory);
+    if (fullOutputPath.StartsWith(inputDirectoryWithSeparator, StringComparison.OrdinalIgnoreCase))
+    {
+        throw new InvalidOperationException("The output .laapp path cannot be placed inside the source directory.");
+    }
+
+    var destinationDirectory = Path.GetDirectoryName(fullOutputPath);
+    if (string.IsNullOrWhiteSpace(destinationDirectory))
+    {
+        throw new InvalidOperationException("Failed to determine the output directory for the .laapp package.");
+    }
+
+    Directory.CreateDirectory(destinationDirectory);
+    if (File.Exists(fullOutputPath))
+    {
+        if (!overwrite)
+        {
+            throw new InvalidOperationException(
+                $"The output package '{fullOutputPath}' already exists. Pass '--overwrite' to replace it.");
+        }
+
+        File.Delete(fullOutputPath);
+    }
+
+    await Task.Run(() => ZipFile.CreateFromDirectory(
+        fullInputDirectory,
+        fullOutputPath,
+        CompressionLevel.Optimal,
+        includeBaseDirectory: false));
+
+    Console.WriteLine($"Packaged '{manifest.Name}' to '{fullOutputPath}'.");
+    return 0;
+}
+
+static string ReadValue(IReadOnlyList<string> args, ref int index, string optionName)
+{
+    var nextIndex = index + 1;
+    if (nextIndex >= args.Count)
+    {
+        throw new InvalidOperationException($"Missing value for '{optionName}'.");
+    }
+
+    index = nextIndex;
+    return args[nextIndex];
+}
+
+static string BuildPackageFileName(string pluginId)
+{
+    var invalidChars = Path.GetInvalidFileNameChars();
+    var safeName = new string(pluginId.Select(ch => invalidChars.Contains(ch) ? '_' : ch).ToArray());
+    return safeName + PluginSdkInfo.PackageFileExtension;
+}
+
+static string EnsureTrailingSeparator(string path)
+{
+    return path.EndsWith(Path.DirectorySeparatorChar.ToString(), StringComparison.Ordinal)
+        ? path
+        : path + Path.DirectorySeparatorChar;
+}
+
+static void PrintUsage()
+{
+    Console.WriteLine("LanMountainDesktop.PluginPackager");
+    Console.WriteLine("Usage:");
+    Console.WriteLine("  --input <plugin build directory>   Required");
+    Console.WriteLine("  --output <path to .laapp>          Optional");
+    Console.WriteLine("  --overwrite                        Optional");
+}

LanMountainDesktop.PluginSdk/IPlugin.cs

@@ -0,0 +1,6 @@
+namespace LanMountainDesktop.PluginSdk;
+
+public interface IPlugin
+{
+    void Initialize(IPluginContext context);
+}

LanMountainDesktop.PluginSdk/IPluginContext.cs

@@ -0,0 +1,27 @@
+using System.Collections.Generic;
+
+namespace LanMountainDesktop.PluginSdk;
+
+public interface IPluginContext
+{
+    PluginManifest Manifest { get; }
+
+    string PluginDirectory { get; }
+
+    string DataDirectory { get; }
+
+    IServiceProvider Services { get; }
+
+    IReadOnlyDictionary<string, object?> Properties { get; }
+
+    T? GetService<T>();
+
+    bool TryGetProperty<T>(string key, out T? value);
+
+    void RegisterService<TService>(TService service)
+        where TService : class;
+
+    void RegisterSettingsPage(PluginSettingsPageRegistration registration);
+
+    void RegisterDesktopComponent(PluginDesktopComponentRegistration registration);
+}

LanMountainDesktop.PluginSdk/IPluginMessageBus.cs

@@ -0,0 +1,8 @@
+namespace LanMountainDesktop.PluginSdk;
+
+public interface IPluginMessageBus
+{
+    IDisposable Subscribe<TMessage>(Action<TMessage> handler);
+
+    void Publish<TMessage>(TMessage message);
+}

LanMountainDesktop.PluginSdk/IPluginPackageManager.cs

@@ -0,0 +1,8 @@
+namespace LanMountainDesktop.PluginSdk;
+
+public interface IPluginPackageManager
+{
+    IReadOnlyList<InstalledPluginInfo> GetInstalledPlugins();
+
+    PluginPackageInstallResult InstallPackage(string packagePath);
+}

LanMountainDesktop.PluginSdk/InstalledPluginInfo.cs

@@ -0,0 +1,8 @@
+namespace LanMountainDesktop.PluginSdk;
+
+public sealed record InstalledPluginInfo(
+    PluginManifest Manifest,
+    bool IsEnabled,
+    bool IsLoaded,
+    bool IsPackage,
+    string? ErrorMessage);

LanMountainDesktop.PluginSdk/LanMountainDesktop.PluginSdk.csproj

@@ -0,0 +1,15 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net10.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+    <Version>1.0.0</Version>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <Compile Remove="_build_verify_*\**\*.cs" />
+    <PackageReference Include="Avalonia" Version="11.3.12" />
+  </ItemGroup>
+
+</Project>

LanMountainDesktop.PluginSdk/PluginBase.cs

@@ -0,0 +1,8 @@
+namespace LanMountainDesktop.PluginSdk;
+
+public abstract class PluginBase : IPlugin
+{
+    public virtual void Initialize(IPluginContext context)
+    {
+    }
+}

LanMountainDesktop.PluginSdk/PluginDesktopComponentContext.cs

@@ -0,0 +1,66 @@
+namespace LanMountainDesktop.PluginSdk;
+
+public sealed class PluginDesktopComponentContext
+{
+    public PluginDesktopComponentContext(
+        PluginManifest manifest,
+        string pluginDirectory,
+        string dataDirectory,
+        IServiceProvider services,
+        IReadOnlyDictionary<string, object?> properties,
+        string componentId,
+        string? placementId,
+        double cellSize)
+    {
+        ArgumentNullException.ThrowIfNull(manifest);
+        ArgumentException.ThrowIfNullOrWhiteSpace(pluginDirectory);
+        ArgumentException.ThrowIfNullOrWhiteSpace(dataDirectory);
+        ArgumentException.ThrowIfNullOrWhiteSpace(componentId);
+        ArgumentNullException.ThrowIfNull(services);
+        ArgumentNullException.ThrowIfNull(properties);
+
+        Manifest = manifest;
+        PluginDirectory = pluginDirectory;
+        DataDirectory = dataDirectory;
+        Services = services;
+        Properties = properties;
+        ComponentId = componentId.Trim();
+        PlacementId = string.IsNullOrWhiteSpace(placementId) ? null : placementId.Trim();
+        CellSize = Math.Max(1, cellSize);
+    }
+
+    public PluginManifest Manifest { get; }
+
+    public string PluginDirectory { get; }
+
+    public string DataDirectory { get; }
+
+    public IServiceProvider Services { get; }
+
+    public IReadOnlyDictionary<string, object?> Properties { get; }
+
+    public string ComponentId { get; }
+
+    public string? PlacementId { get; }
+
+    public double CellSize { get; }
+
+    public T? GetService<T>()
+    {
+        return (T?)Services.GetService(typeof(T));
+    }
+
+    public bool TryGetProperty<T>(string key, out T? value)
+    {
+        ArgumentException.ThrowIfNullOrWhiteSpace(key);
+
+        if (Properties.TryGetValue(key, out var rawValue) && rawValue is T typedValue)
+        {
+            value = typedValue;
+            return true;
+        }
+
+        value = default;
+        return false;
+    }
+}

LanMountainDesktop.PluginSdk/PluginDesktopComponentRegistration.cs

@@ -0,0 +1,66 @@
+using Avalonia.Controls;
+
+namespace LanMountainDesktop.PluginSdk;
+
+public sealed class PluginDesktopComponentRegistration
+{
+    public PluginDesktopComponentRegistration(
+        string componentId,
+        string displayName,
+        Func<PluginDesktopComponentContext, Control> controlFactory,
+        string iconKey = "PuzzlePiece",
+        string category = "Plugins",
+        int minWidthCells = 2,
+        int minHeightCells = 2,
+        bool allowDesktopPlacement = true,
+        bool allowStatusBarPlacement = false,
+        PluginDesktopComponentResizeMode resizeMode = PluginDesktopComponentResizeMode.Proportional,
+        string? displayNameLocalizationKey = null,
+        Func<double, double>? cornerRadiusResolver = null)
+    {
+        ArgumentException.ThrowIfNullOrWhiteSpace(componentId);
+        ArgumentException.ThrowIfNullOrWhiteSpace(displayName);
+        ArgumentException.ThrowIfNullOrWhiteSpace(iconKey);
+        ArgumentException.ThrowIfNullOrWhiteSpace(category);
+        ArgumentNullException.ThrowIfNull(controlFactory);
+
+        ComponentId = componentId.Trim();
+        DisplayName = displayName.Trim();
+        DisplayNameLocalizationKey = string.IsNullOrWhiteSpace(displayNameLocalizationKey)
+            ? null
+            : displayNameLocalizationKey.Trim();
+        ControlFactory = controlFactory;
+        IconKey = iconKey.Trim();
+        Category = category.Trim();
+        MinWidthCells = Math.Max(1, minWidthCells);
+        MinHeightCells = Math.Max(1, minHeightCells);
+        AllowDesktopPlacement = allowDesktopPlacement;
+        AllowStatusBarPlacement = allowStatusBarPlacement;
+        ResizeMode = resizeMode;
+        CornerRadiusResolver = cornerRadiusResolver;
+    }
+
+    public string ComponentId { get; }
+
+    public string DisplayName { get; }
+
+    public string? DisplayNameLocalizationKey { get; }
+
+    public Func<PluginDesktopComponentContext, Control> ControlFactory { get; }
+
+    public string IconKey { get; }
+
+    public string Category { get; }
+
+    public int MinWidthCells { get; }
+
+    public int MinHeightCells { get; }
+
+    public bool AllowDesktopPlacement { get; }
+
+    public bool AllowStatusBarPlacement { get; }
+
+    public PluginDesktopComponentResizeMode ResizeMode { get; }
+
+    public Func<double, double>? CornerRadiusResolver { get; }
+}

LanMountainDesktop.PluginSdk/PluginDesktopComponentResizeMode.cs

@@ -0,0 +1,7 @@
+namespace LanMountainDesktop.PluginSdk;
+
+public enum PluginDesktopComponentResizeMode
+{
+    Proportional = 0,
+    Free = 1
+}

LanMountainDesktop.PluginSdk/PluginEntranceAttribute.cs

@@ -0,0 +1,6 @@
+namespace LanMountainDesktop.PluginSdk;
+
+[AttributeUsage(AttributeTargets.Class, AllowMultiple = false, Inherited = false)]
+public sealed class PluginEntranceAttribute : Attribute
+{
+}

LanMountainDesktop.PluginSdk/PluginHostPropertyKeys.cs

@@ -0,0 +1,9 @@
+namespace LanMountainDesktop.PluginSdk;
+
+public static class PluginHostPropertyKeys
+{
+    public const string HostApplicationName = "HostApplicationName";
+    public const string HostVersion = "HostVersion";
+    public const string PluginSdkApiVersion = "PluginSdkApiVersion";
+    public const string HostLanguageCode = "HostLanguageCode";
+}

LanMountainDesktop.PluginSdk/PluginLocalizer.cs

@@ -0,0 +1,114 @@
+using System.Globalization;
+using System.Text.Json;
+
+namespace LanMountainDesktop.PluginSdk;
+
+public sealed class PluginLocalizer
+{
+    private static readonly JsonSerializerOptions JsonOptions = new()
+    {
+        ReadCommentHandling = JsonCommentHandling.Skip,
+        AllowTrailingCommas = true
+    };
+
+    private readonly Dictionary<string, Dictionary<string, string>> _cache =
+        new(StringComparer.OrdinalIgnoreCase);
+
+    public PluginLocalizer(string pluginDirectory, string? languageCode)
+    {
+        ArgumentException.ThrowIfNullOrWhiteSpace(pluginDirectory);
+
+        PluginDirectory = pluginDirectory;
+        LanguageCode = NormalizeLanguageCode(languageCode);
+    }
+
+    public string PluginDirectory { get; }
+
+    public string LanguageCode { get; }
+
+    public static PluginLocalizer Create(IPluginContext context)
+    {
+        ArgumentNullException.ThrowIfNull(context);
+        return new PluginLocalizer(context.PluginDirectory, ResolveLanguageCode(context.Properties));
+    }
+
+    public static PluginLocalizer Create(PluginDesktopComponentContext context)
+    {
+        ArgumentNullException.ThrowIfNull(context);
+        return new PluginLocalizer(context.PluginDirectory, ResolveLanguageCode(context.Properties));
+    }
+
+    public string GetString(string key, string fallback)
+    {
+        ArgumentException.ThrowIfNullOrWhiteSpace(key);
+
+        var primaryTable = LoadLanguageTable(LanguageCode);
+        if (primaryTable.TryGetValue(key, out var value) && !string.IsNullOrWhiteSpace(value))
+        {
+            return value;
+        }
+
+        if (!string.Equals(LanguageCode, "en-US", StringComparison.OrdinalIgnoreCase))
+        {
+            var fallbackTable = LoadLanguageTable("en-US");
+            if (fallbackTable.TryGetValue(key, out value) && !string.IsNullOrWhiteSpace(value))
+            {
+                return value;
+            }
+        }
+
+        return fallback;
+    }
+
+    public string Format(string key, string fallback, params object[] args)
+    {
+        return string.Format(CultureInfo.CurrentCulture, GetString(key, fallback), args);
+    }
+
+    public static string NormalizeLanguageCode(string? languageCode)
+    {
+        return string.Equals(languageCode, "en-US", StringComparison.OrdinalIgnoreCase)
+            ? "en-US"
+            : "zh-CN";
+    }
+
+    public static string ResolveLanguageCode(IReadOnlyDictionary<string, object?> properties)
+    {
+        ArgumentNullException.ThrowIfNull(properties);
+
+        return properties.TryGetValue(PluginHostPropertyKeys.HostLanguageCode, out var rawValue) &&
+               rawValue is string languageCode
+            ? NormalizeLanguageCode(languageCode)
+            : NormalizeLanguageCode(CultureInfo.CurrentUICulture.Name);
+    }
+
+    private Dictionary<string, string> LoadLanguageTable(string languageCode)
+    {
+        if (_cache.TryGetValue(languageCode, out var table))
+        {
+            return table;
+        }
+
+        var result = new Dictionary<string, string>(StringComparer.OrdinalIgnoreCase);
+        try
+        {
+            var filePath = Path.Combine(PluginDirectory, "Localization", $"{languageCode}.json");
+            if (File.Exists(filePath))
+            {
+                var json = File.ReadAllText(filePath).TrimStart('\uFEFF');
+                var data = JsonSerializer.Deserialize<Dictionary<string, string>>(json, JsonOptions);
+                if (data is not null)
+                {
+                    result = new Dictionary<string, string>(data, StringComparer.OrdinalIgnoreCase);
+                }
+            }
+        }
+        catch
+        {
+            // Keep empty localization table for plugin resilience.
+        }
+
+        _cache[languageCode] = result;
+        return result;
+    }
+}

LanMountainDesktop.PluginSdk/PluginManifest.cs

@@ -0,0 +1,107 @@
+using System.Text.Json;
+
+namespace LanMountainDesktop.PluginSdk;
+
+public sealed record PluginManifest(
+    string Id,
+    string Name,
+    string EntranceAssembly,
+    string? Description = null,
+    string? Author = null,
+    string? Version = null,
+    string? ApiVersion = null)
+{
+    private static readonly JsonSerializerOptions SerializerOptions = new()
+    {
+        PropertyNameCaseInsensitive = true,
+        ReadCommentHandling = JsonCommentHandling.Skip,
+        AllowTrailingCommas = true
+    };
+
+    public static PluginManifest Load(string manifestPath)
+    {
+        ArgumentException.ThrowIfNullOrWhiteSpace(manifestPath);
+
+        using var stream = File.OpenRead(manifestPath);
+        return Load(stream, manifestPath);
+    }
+
+    public static PluginManifest Load(Stream stream, string sourceName)
+    {
+        ArgumentNullException.ThrowIfNull(stream);
+        ArgumentException.ThrowIfNullOrWhiteSpace(sourceName);
+
+        var manifest = JsonSerializer.Deserialize<PluginManifest>(stream, SerializerOptions);
+        if (manifest is null)
+        {
+            throw new InvalidOperationException($"Failed to deserialize plugin manifest '{sourceName}'.");
+        }
+
+        return manifest.NormalizeAndValidate(sourceName);
+    }
+
+    public string ResolveEntranceAssemblyPath(string manifestPath)
+    {
+        ArgumentException.ThrowIfNullOrWhiteSpace(manifestPath);
+
+        if (Path.IsPathRooted(EntranceAssembly))
+        {
+            return Path.GetFullPath(EntranceAssembly);
+        }
+
+        var manifestDirectory = Path.GetDirectoryName(Path.GetFullPath(manifestPath))
+            ?? throw new InvalidOperationException($"Failed to determine the directory of '{manifestPath}'.");
+
+        return Path.GetFullPath(Path.Combine(manifestDirectory, EntranceAssembly));
+    }
+
+    private PluginManifest NormalizeAndValidate(string manifestPath)
+    {
+        var normalized = this with
+        {
+            Id = RequireValue(Id, nameof(Id), manifestPath),
+            Name = RequireValue(Name, nameof(Name), manifestPath),
+            EntranceAssembly = RequireValue(EntranceAssembly, nameof(EntranceAssembly), manifestPath),
+            Description = NormalizeOptionalValue(Description),
+            Author = NormalizeOptionalValue(Author),
+            Version = NormalizeOptionalValue(Version),
+            ApiVersion = NormalizeOptionalValue(ApiVersion) ?? PluginSdkInfo.ApiVersion
+        };
+
+        if (!System.Version.TryParse(normalized.ApiVersion, out var requestedVersion))
+        {
+            throw new InvalidOperationException(
+                $"Plugin manifest '{manifestPath}' declares an invalid API version '{normalized.ApiVersion}'.");
+        }
+
+        if (!System.Version.TryParse(PluginSdkInfo.ApiVersion, out var currentVersion))
+        {
+            throw new InvalidOperationException($"Plugin SDK API version '{PluginSdkInfo.ApiVersion}' is invalid.");
+        }
+
+        if (requestedVersion.Major != currentVersion.Major)
+        {
+            throw new InvalidOperationException(
+                $"Plugin '{normalized.Id}' targets API version '{normalized.ApiVersion}', but the host provides '{PluginSdkInfo.ApiVersion}'.");
+        }
+
+        return normalized;
+    }
+
+    private static string RequireValue(string? value, string propertyName, string manifestPath)
+    {
+        var normalized = NormalizeOptionalValue(value);
+        if (string.IsNullOrWhiteSpace(normalized))
+        {
+            throw new InvalidOperationException(
+                $"Plugin manifest '{manifestPath}' is missing required property '{propertyName}'.");
+        }
+
+        return normalized;
+    }
+
+    private static string? NormalizeOptionalValue(string? value)
+    {
+        return string.IsNullOrWhiteSpace(value) ? null : value.Trim();
+    }
+}

LanMountainDesktop.PluginSdk/PluginPackageInstallResult.cs

@@ -0,0 +1,6 @@
+namespace LanMountainDesktop.PluginSdk;
+
+public sealed record PluginPackageInstallResult(
+    PluginManifest Manifest,
+    bool ReplacedExisting,
+    bool RestartRequired);

LanMountainDesktop.PluginSdk/PluginSdkInfo.cs

@@ -0,0 +1,12 @@
+namespace LanMountainDesktop.PluginSdk;
+
+public static class PluginSdkInfo
+{
+    public const string ApiVersion = "1.0.0";
+    public const string ManifestFileName = "plugin.json";
+    public const string PackageFileExtension = ".laapp";
+    public const string DataDirectoryName = "Data";
+    public const string RuntimeDirectoryName = ".runtime";
+    public const string ExtractedPackagesDirectoryName = "packages";
+    public const string PackagedDataDirectoryName = "data";
+}

LanMountainDesktop.PluginSdk/PluginSettingsPageRegistration.cs

@@ -0,0 +1,30 @@
+using Avalonia.Controls;
+
+namespace LanMountainDesktop.PluginSdk;
+
+public sealed class PluginSettingsPageRegistration
+{
+    public PluginSettingsPageRegistration(
+        string id,
+        string title,
+        Func<Control> contentFactory,
+        int sortOrder = 0)
+    {
+        ArgumentException.ThrowIfNullOrWhiteSpace(id);
+        ArgumentException.ThrowIfNullOrWhiteSpace(title);
+        ArgumentNullException.ThrowIfNull(contentFactory);
+
+        Id = id.Trim();
+        Title = title.Trim();
+        ContentFactory = contentFactory;
+        SortOrder = sortOrder;
+    }
+
+    public string Id { get; }
+
+    public string Title { get; }
+
+    public int SortOrder { get; }
+
+    public Func<Control> ContentFactory { get; }
+}

LanMountainDesktop.sln

@@ -5,6 +5,12 @@ VisualStudioVersion = 17.0.31903.59
 MinimumVisualStudioVersion = 10.0.40219.1
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "LanMountainDesktop", "LanMountainDesktop\LanMountainDesktop.csproj", "{00000001-0000-0000-0000-000000000001}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "LanMountainDesktop.SamplePlugin", "LanAirApp\samples\LanMountainDesktop.SamplePlugin\LanMountainDesktop.SamplePlugin.csproj", "{BDCD028D-DB6E-4BD5-994A-65889DBDEE0C}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "LanMountainDesktop.PluginPackager", "LanAirApp\tools\LanMountainDesktop.PluginPackager\LanMountainDesktop.PluginPackager.csproj", "{AAE8578B-1F9D-4D4F-8B2E-0A98C55B0C31}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "LanMountainDesktop.PluginSdk", "LanMountainDesktop.PluginSdk\LanMountainDesktop.PluginSdk.csproj", "{30A0F689-AACC-48C8-8BFE-BC7BFBA6CC55}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -15,5 +21,17 @@ Global
 		{00000001-0000-0000-0000-000000000001}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{00000001-0000-0000-0000-000000000001}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{00000001-0000-0000-0000-000000000001}.Release|Any CPU.Build.0 = Release|Any CPU
+		{BDCD028D-DB6E-4BD5-994A-65889DBDEE0C}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{BDCD028D-DB6E-4BD5-994A-65889DBDEE0C}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{BDCD028D-DB6E-4BD5-994A-65889DBDEE0C}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{BDCD028D-DB6E-4BD5-994A-65889DBDEE0C}.Release|Any CPU.Build.0 = Release|Any CPU
+		{AAE8578B-1F9D-4D4F-8B2E-0A98C55B0C31}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{AAE8578B-1F9D-4D4F-8B2E-0A98C55B0C31}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{AAE8578B-1F9D-4D4F-8B2E-0A98C55B0C31}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{AAE8578B-1F9D-4D4F-8B2E-0A98C55B0C31}.Release|Any CPU.Build.0 = Release|Any CPU
+		{30A0F689-AACC-48C8-8BFE-BC7BFBA6CC55}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{30A0F689-AACC-48C8-8BFE-BC7BFBA6CC55}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{30A0F689-AACC-48C8-8BFE-BC7BFBA6CC55}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{30A0F689-AACC-48C8-8BFE-BC7BFBA6CC55}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 EndGlobal

LanMountainDesktop/App.axaml

@@ -16,23 +16,6 @@
         <local:ViewLocator/>
     </Application.DataTemplates>
 
-    <TrayIcon.Icons>
-        <TrayIcons>
-            <TrayIcon Icon="/Assets/avalonia-logo.ico"
-                      ToolTipText="LanMountainDesktop">
-                <TrayIcon.Menu>
-                    <NativeMenu>
-                        <NativeMenuItem Header="设置" Click="OnTraySettingsClick" />
-                        <NativeMenuItemSeparator />
-                        <NativeMenuItem Header="重启应用" Click="OnTrayRestartClick" />
-                        <NativeMenuItemSeparator />
-                        <NativeMenuItem Header="退出应用" Click="OnTrayExitClick" />
-                    </NativeMenu>
-                </TrayIcon.Menu>
-            </TrayIcon>
-        </TrayIcons>
-    </TrayIcon.Icons>
-  
     <Application.Styles>
         <sty:FluentAvaloniaTheme />
         <mi:MaterialIconStyles />

LanMountainDesktop/App.axaml.cs

@@ -1,11 +1,12 @@
-using Avalonia;
+using Avalonia;
+using Avalonia.Controls;
 using Avalonia.Controls.ApplicationLifetimes;
 using Avalonia.Data.Core;
 using Avalonia.Data.Core.Plugins;
 using System;
-using System.Diagnostics;
 using System.Linq;
 using Avalonia.Markup.Xaml;
+using Avalonia.Platform;
 using Avalonia.Threading;
 using LanMountainDesktop.Services;
 using LanMountainDesktop.ViewModels;
@@ -16,10 +17,18 @@ namespace LanMountainDesktop;
 
 public partial class App : Application
 {
+    private readonly AppSettingsService _appSettingsService = new();
+    private readonly LocalizationService _localizationService = new();
+
     private SettingsWindow? _traySettingsWindow;
+    private TrayIcons? _trayIcons;
+    private PluginRuntimeService? _pluginRuntimeService;
+
+    public PluginRuntimeService? PluginRuntimeService => _pluginRuntimeService;
 
     public override void Initialize()
     {
+        AppLogger.Info("App", "Initializing application resources.");
         ConfigureWebViewUserDataFolder();
         AvaloniaWebViewBuilder.Initialize(default);
         AvaloniaXamlLoader.Load(this);
@@ -27,18 +36,29 @@ public partial class App : Application
 
     public override void OnFrameworkInitializationCompleted()
     {
+        AppLogger.Info("App", "Framework initialization completed.");
         LinuxDesktopEntryInstaller.EnsureInstalled();
+        InitializePluginRuntime();
+        AppSettingsService.SettingsSaved += OnAppSettingsSaved;
+        InitializeTrayIcon();
 
         if (ApplicationLifetime is IClassicDesktopStyleApplicationLifetime desktop)
         {
-            // Avoid duplicate validations from both Avalonia and the CommunityToolkit. 
+            // Avoid duplicate validations from both Avalonia and the CommunityToolkit.
             // More info: https://docs.avaloniaui.net/docs/guides/development-guides/data-validation#manage-validationplugins
             DisableAvaloniaDataAnnotationValidation();
             desktop.ShutdownMode = Avalonia.Controls.ShutdownMode.OnExplicitShutdown;
+            desktop.Exit += (_, _) =>
+            {
+                AppLogger.Info("App", "Desktop lifetime exit triggered.");
+                AppSettingsService.SettingsSaved -= OnAppSettingsSaved;
+                DisposeTrayIcon();
+            };
             desktop.MainWindow = new MainWindow
             {
                 DataContext = new MainWindowViewModel(),
             };
+            AppLogger.Info("App", $"Main window created. LogFile={AppLogger.LogFilePath}");
         }
 
         base.OnFrameworkInitializationCompleted();
@@ -46,6 +66,8 @@ public partial class App : Application
 
     private void OnTrayExitClick(object? sender, EventArgs e)
     {
+        DisposeTrayIcon();
+
         if (ApplicationLifetime is IClassicDesktopStyleApplicationLifetime desktop)
         {
             desktop.Shutdown();
@@ -85,52 +107,25 @@ public partial class App : Application
             }
             catch (Exception ex)
             {
-                Debug.WriteLine($"[TraySettings] Failed to open settings window: {ex}");
+                AppLogger.Warn("TraySettings", "Failed to open settings window.", ex);
             }
         }, DispatcherPriority.Normal);
     }
 
     private void OnTrayRestartClick(object? sender, EventArgs e)
     {
-        if (ApplicationLifetime is not IClassicDesktopStyleApplicationLifetime desktop)
-        {
-            return;
-        }
-
-        if (TryStartCurrentProcess())
-        {
-            desktop.Shutdown();
-        }
+        AppRestartService.TryRestartApplication();
     }
 
-    private static bool TryStartCurrentProcess()
+    private void OnAppSettingsSaved(string _)
     {
-        try
+        Dispatcher.UIThread.Post(() =>
         {
-            var args = Environment.GetCommandLineArgs();
-            if (args.Length == 0 || string.IsNullOrWhiteSpace(args[0]))
+            if (_trayIcons is not null)
             {
-                return false;
+                InitializeTrayIcon();
             }
-
-            var startInfo = new ProcessStartInfo
-            {
-                FileName = args[0],
-                UseShellExecute = false
-            };
-
-            for (var i = 1; i < args.Length; i++)
-            {
-                startInfo.ArgumentList.Add(args[i]);
-            }
-
-            Process.Start(startInfo);
-            return true;
-        }
-        catch
-        {
-            return false;
-        }
+        }, DispatcherPriority.Background);
     }
 
     private void DisableAvaloniaDataAnnotationValidation()
@@ -167,9 +162,94 @@ public partial class App : Application
                 userDataFolder,
                 EnvironmentVariableTarget.Process);
         }
-        catch
+        catch (Exception ex)
         {
             // Keep startup resilient if user profile folders are unavailable.
+            AppLogger.Warn("WebView2", "Failed to configure WebView2 user data folder.", ex);
         }
     }
+
+    private void InitializePluginRuntime()
+    {
+        try
+        {
+            _pluginRuntimeService?.Dispose();
+            _pluginRuntimeService = new PluginRuntimeService();
+            _pluginRuntimeService.LoadInstalledPlugins();
+        }
+        catch (Exception ex)
+        {
+            AppLogger.Warn("PluginRuntime", "Failed to initialize plugin runtime.", ex);
+        }
+    }
+
+    private void InitializeTrayIcon()
+    {
+        try
+        {
+            DisposeTrayIcon();
+
+            using var iconStream = AssetLoader.Open(new Uri("avares://LanMountainDesktop/Assets/avalonia-logo.ico"));
+            var trayIcon = new TrayIcon
+            {
+                Icon = new WindowIcon(iconStream),
+                ToolTipText = L("tray.tooltip", "LanMountainDesktop"),
+                Menu = BuildTrayMenu(),
+                IsVisible = true
+            };
+
+            _trayIcons = [trayIcon];
+            TrayIcon.SetIcons(this, _trayIcons);
+        }
+        catch (Exception ex)
+        {
+            AppLogger.Warn("TrayIcon", "Failed to initialize tray icon.", ex);
+        }
+    }
+
+    private NativeMenu BuildTrayMenu()
+    {
+        var menu = new NativeMenu();
+
+        var settingsItem = new NativeMenuItem(L("tray.menu.settings", "设置"));
+        settingsItem.Click += OnTraySettingsClick;
+        menu.Items.Add(settingsItem);
+
+        menu.Items.Add(new NativeMenuItemSeparator());
+
+        var restartItem = new NativeMenuItem(L("tray.menu.restart", "重启应用"));
+        restartItem.Click += OnTrayRestartClick;
+        menu.Items.Add(restartItem);
+
+        menu.Items.Add(new NativeMenuItemSeparator());
+
+        var exitItem = new NativeMenuItem(L("tray.menu.exit", "退出应用"));
+        exitItem.Click += OnTrayExitClick;
+        menu.Items.Add(exitItem);
+
+        return menu;
+    }
+
+    private void DisposeTrayIcon()
+    {
+        if (_trayIcons is null)
+        {
+            return;
+        }
+
+        TrayIcon.SetIcons(this, null);
+        foreach (var trayIcon in _trayIcons)
+        {
+            trayIcon.Dispose();
+        }
+
+        _trayIcons = null;
+    }
+
+    private string L(string key, string fallback)
+    {
+        var snapshot = _appSettingsService.Load();
+        var languageCode = _localizationService.NormalizeLanguageCode(snapshot.LanguageCode);
+        return _localizationService.GetString(languageCode, key, fallback);
+    }
 }

LanMountainDesktop/Assets/Fonts/MiSans-NOTICE.md

@@ -1,22 +1,35 @@
-# MiSans Font Notice
+# MiSans 字体说明
 
-This app bundles MiSans fonts for consistent cross-device rendering.
+## 中文
 
-## Included files
+本项目内置 MiSans 字体，用于在不同设备上保持相对一致的文字渲染效果。
+
+### 包含文件
 
 - `MiSans-Regular.ttf`
 - `MiSans-Semibold.ttf`
 - `MiSans-Bold.ttf`
 
-## Source
+### 来源
+
+- 上游仓库：https://github.com/dsrkafuu/misans
+- 上游所引用的小米字体页面：https://hyperos.mi.com/font/zh/
+
+### 许可与使用说明
+
+- 上游脚本或打包仓库使用 Apache-2.0 许可。
+- MiSans 字体本身的版权和补充使用条款以小米官方说明为准：
+  - https://hyperos.mi.com/font-download/MiSans%E5%AD%97%E4%BD%93%E7%9F%A5%E8%AF%86%E4%BA%A7%E6%9D%83%E8%AE%B8%E5%8F%AF%E5%8D%8F%E8%AE%AE.pdf
+
+在重新分发本项目时，请自行确认并遵守 MiSans 字体的相关条款。
+
+## English
+
+This project bundles MiSans fonts for more consistent cross-device rendering.
+
+### Sources
 
 - Upstream package repository: https://github.com/dsrkafuu/misans
-- Original font source referenced by upstream: https://hyperos.mi.com/font/zh/
+- Xiaomi font source page: https://hyperos.mi.com/font/zh/
 
-## License and usage notes
-
-- Script/package license in upstream repository: Apache-2.0
-- MiSans font copyright and additional usage terms:
-  https://hyperos.mi.com/font-download/MiSans%E5%AD%97%E4%BD%93%E7%9F%A5%E8%AF%86%E4%BA%A7%E6%9D%83%E8%AE%B8%E5%8F%AF%E5%8D%8F%E8%AE%AE.pdf
-
-Please review and comply with the MiSans font terms when distributing this app.
+Please review and comply with the MiSans font terms before redistributing this application.

LanMountainDesktop/Assets/Weather/ATTRIBUTION.md

@@ -1,9 +1,12 @@
-# Weather Background Assets
+# 天气背景资源署名
 
-Weather card background images are sourced from **Pexels** and used under the Pexels license:
-https://www.pexels.com/license/
+## 中文
 
-## Sources
+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/
@@ -14,16 +17,24 @@ https://www.pexels.com/license/
 - `storm.jpg`
   - https://www.pexels.com/photo/sea-under-a-stormy-sky-4609228/
 
-## Derived Variants (for widget scene mapping)
+### 派生资源
 
-The following files are generated from the above base assets by color grading/brightness adjustments to match the ColorOS-like weather card style:
+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` (from `clear_sky.jpg`)
-- `clear_night.jpg` (from `clear_sky.jpg`)
-- `cloudy_day.jpg` (from `clear_sky.jpg`)
-- `cloudy_night.jpg` (from `clear_sky.jpg`)
-- `rain_light.jpg` (from `rain.jpg`)
-- `rain_heavy.jpg` (from `rain.jpg`)
-- `storm_dark.jpg` (from `storm.jpg`)
-- `fog_haze.jpg` (from `storm.jpg`)
-- `snow_soft.jpg` (from `snow.jpg`)
+- `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.

LanMountainDesktop/Assets/Weather/HyperOS3/ATTRIBUTION.md

@@ -1,45 +1,23 @@
-# HyperOS3 Weather Assets (Official Xiaomi Package)
+# 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
 
-These assets were extracted from the official Xiaomi Weather APK provided by the user:
 - Source APK: `c:\Program Files\Netease\GameViewer\Download\MI SKY 12.apk`
-- Package: `com.miui.weather2` (Mi Weather)
-- Extraction date: 2026-03-03
+- Package: `com.miui.weather2`
+- Extraction date: `2026-03-03`
 
-Extracted source paths inside APK:
-- `assets/map_custom/particle/sun_0.png` -> `hyper_sun_core.png`
-- `assets/map_custom/particle/sun_1.png` -> `hyper_sun_ring.png`
-- `assets/map_custom/particle/fog.png` -> `hyper_fog.png`
-- `assets/map_custom/particle/haze.png` -> `hyper_haze.png`
-- `assets/map_custom/particle/rain.png` -> `hyper_rain_drop.png`
-- `assets/map_custom/particle/snow.png` -> `hyper_snow_flake.png`
-- `assets/map_custom/skybox/top.png` -> `hyper_sky_top.png`
-- `assets/map_custom/skybox/back.png` -> `hyper_sky_back.png`
-- `assets/map_custom/skybox/front.png` -> `hyper_sky_front.png`
-- `assets/map_custom/skybox/left.png` -> `hyper_sky_left.png`
-- `assets/map_custom/skybox/right.png` -> `hyper_sky_right.png`
-- `assets/map_custom/skybox/bottom.png` -> `hyper_sky_bottom.png`
-- `assets/map_assets/VM3DRes/cross_sky_day.png` -> `hyper_cross_sky_day.png`
-- `assets/map_assets/VM3DRes/cross_sky_night.png` -> `hyper_cross_sky_night.png`
+### 用途说明
 
-Extracted weather icon paths inside APK (`res/*.webp`):
-- `res/aO.webp` -> `Icons/icon_sunny_day.webp`
-- `res/k2.webp` -> `Icons/icon_moon_clear.webp`
-- `res/Ip.webp` -> `Icons/icon_partly_cloudy_day.webp`
-- `res/HI.webp` -> `Icons/icon_partly_cloudy_night.webp`
-- `res/E4.webp` -> `Icons/icon_cloudy.webp`
-- `res/5f.webp` -> `Icons/icon_rain_light.webp`
-- `res/fO.webp` -> `Icons/icon_rain_heavy.webp`
-- `res/lV1.webp` -> `Icons/icon_thunder.webp`
-- `res/mH1.webp` -> `Icons/icon_snow.webp`
-- `res/jB.webp` -> `Icons/icon_sleet.webp`
-- `res/Wl.webp` -> `Icons/icon_haze.webp`
-- `res/Mg.webp` -> `Icons/icon_windy.webp`
+- 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。
 
-Use only according to Xiaomi's applicable license and usage terms.
+### 额外派生资源
 
-## Soft Widget Icon Set (2026-03-05)
-
-To better match the Xiaomi weather time-card visual hierarchy, an additional local icon set was generated for this project:
+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`
@@ -52,4 +30,8 @@ To better match the Xiaomi weather time-card visual hierarchy, an additional loc
 - `Icons/icon_mini_snow_soft.png`
 - `Icons/icon_mini_fog_soft.png`
 
-These files are original derivative assets generated in-repo with local tooling, using the extracted Xiaomi package visual direction as reference (soft glow hero icon + lightweight forecast icons).
+## 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.

LanMountainDesktop/ComponentSystem/ComponentRegistry.cs

@@ -385,6 +385,13 @@ public sealed class ComponentRegistry
         return new ComponentRegistry(merged);
     }
 
+    public ComponentRegistry RegisterComponents(IEnumerable<DesktopComponentDefinition> definitions)
+    {
+        var merged = _definitions.Values.ToList();
+        merged.AddRange(definitions);
+        return new ComponentRegistry(merged);
+    }
+
     public bool TryGetDefinition(string componentId, out DesktopComponentDefinition definition)
     {
         return _definitions.TryGetValue(componentId, out definition!);

LanMountainDesktop/ComponentSystem/README.md

@@ -1,77 +1,38 @@
-# 组件系统模块（Component System Module）
+# 组件系统说明
 
-本目录提供组件系统的模块化基础，用于支持内置组件管理与第三方扩展接入。  
-This directory provides the modular foundation for built-in component management and third-party extension integration.
+## 中文
 
-## 核心文件职责（Core Files）
-- `BuiltInComponentIds.cs`：内置组件 ID 常量（例如 `Clock`）。  
-  Built-in component ID constants (for example `Clock`).
-- `DesktopComponentDefinition.cs`：组件元数据定义（名称、类别、最小尺寸、可放置区域等）。  
-  Component metadata model (name, category, minimum size, placement permissions).
-- `ComponentPlacementRules.cs`：组件放置规则（最小尺寸、状态栏高度限制、网格边界约束）。  
-  Placement rules (minimum size, status-bar height rule, grid clamping).
-- `ComponentRegistry.cs`：组件注册中心，负责内置组件与扩展组件合并。  
-  Registry that merges built-in and extension components.
-- `Extensions/IComponentExtensionProvider.cs`：扩展提供者接口契约。  
-  Extension provider interface contract.
-- `Extensions/JsonComponentExtensionProvider.cs`：基于 JSON 的扩展加载器。  
-  JSON-based extension loader.
+`ComponentSystem/` 提供阑山桌面组件定义、注册和扩展的基础能力。
 
-## 第三方扩展契约（Extension Contract）
-- 第三方可通过实现 `IComponentExtensionProvider` 提供组件定义。  
-  Third parties can provide component definitions via `IComponentExtensionProvider`.
-- 当前内置了 JSON 提供者，运行时扫描目录：  
-  Built-in JSON provider scans at runtime:
-  - `Extensions/Components/*.json`（相对应用输出目录）  
-    `Extensions/Components/*.json` (relative to app output directory)
+### 主要职责
 
-## 加载流程（Load Flow）
-1. `ComponentRegistry.CreateDefault()` 先注册内置组件。  
-   Register built-in components first via `ComponentRegistry.CreateDefault()`.
-2. 调用 `.RegisterExtensions(...)` 合并扩展组件。  
-   Merge extension components via `.RegisterExtensions(...)`.
-3. 主窗口通过注册中心校验组件合法性与放置权限。  
-   Main window validates component identity and placement permission through the registry.
+- 管理内置组件 ID 和元数据
+- 约束组件最小尺寸与可放置区域
+- 合并内置组件与扩展组件
+- 通过 JSON 或扩展提供者接入第三方组件
 
-## JSON 清单格式（Manifest Schema）
-JSON 文件为数组，每一项代表一个组件定义。  
-The JSON file is an array, where each item represents one component definition.
+### 关键文件
 
-```json
-[
-  {
-    "id": "Weather",
-    "displayName": "Weather",
-    "iconKey": "WeatherSunny",
-    "category": "Status",
-    "minWidthCells": 1,
-    "minHeightCells": 1,
-    "allowStatusBarPlacement": true,
-    "allowDesktopPlacement": true
-  }
-]
-```
+- `BuiltInComponentIds.cs`：内置组件 ID 常量
+- `DesktopComponentDefinition.cs`：组件元数据模型
+- `ComponentPlacementRules.cs`：放置规则
+- `ComponentRegistry.cs`：组件注册中心
+- `Extensions/IComponentExtensionProvider.cs`：扩展提供者接口
+- `Extensions/JsonComponentExtensionProvider.cs`：JSON 扩展加载器
 
-字段说明（Field notes）：
-- `id`：组件唯一 ID（建议英文、稳定不变）。  
-  Unique component ID (prefer stable English key).
-- `displayName`：显示名。  
-  Display name.
-- `iconKey`：图标键（由上层 UI 解释）。  
-  Icon key resolved by UI layer.
-- `category`：组件分类。  
-  Component category.
-- `minWidthCells` / `minHeightCells`：最小占格，必须满足 `>= 1`。  
-  Minimum cell size, must satisfy `>= 1`.
-- `allowStatusBarPlacement`：是否允许放到顶部状态栏。  
-  Whether placing in top status bar is allowed.
-- `allowDesktopPlacement`：是否允许放到桌面区域。  
-  Whether placing in desktop area is allowed.
+### 扩展方式
 
-## 放置规则摘要（Placement Rules Summary）
-- 最小尺寸约束：`minWidthCells >= 1` 且 `minHeightCells >= 1`。  
-  Minimum size constraint: `minWidthCells >= 1` and `minHeightCells >= 1`.
-- 状态栏约束：状态栏组件高度必须为 `1` 格。  
-  Status bar constraint: component height must be exactly `1` cell.
-- 越界约束：所有组件坐标会被网格边界钳制（clamp）。  
-  Out-of-bounds constraint: component coordinates are clamped to grid bounds.
+- 当前默认扫描 `Extensions/Components/*.json`
+- 组件清单定义显示名、分类、最小尺寸和可放置区域
+- 主程序通过注册中心统一验证组件是否合法
+
+## English
+
+`ComponentSystem/` contains the foundation for component definition, registration, and extension in LanMountainDesktop.
+
+### Responsibilities
+
+- manage built-in component IDs and metadata
+- enforce placement rules
+- merge built-in and extension components
+- support third-party registration through JSON or provider contracts

LanMountainDesktop/LanMountainDesktop.csproj

@@ -24,6 +24,10 @@
     <None Include="Extensions\Components\*.json" CopyToOutputDirectory="PreserveNewest" />
   </ItemGroup>
 
+  <ItemGroup>
+    <ProjectReference Include="..\LanMountainDesktop.PluginSdk\LanMountainDesktop.PluginSdk.csproj" />
+  </ItemGroup>
+
   <ItemGroup>
     <PackageReference Include="Avalonia" Version="11.3.12" />
     <PackageReference Include="Avalonia.Desktop" Version="11.3.12" />
@@ -36,6 +40,7 @@
     </PackageReference>
     <PackageReference Include="CommunityToolkit.Mvvm" Version="8.2.1" />
     <PackageReference Include="DotNetCampus.AvaloniaInkCanvas" Version="1.0.1" />
+    <PackageReference Include="Downloader" Version="4.1.1" />
     <PackageReference Include="FluentAvaloniaUI" Version="2.5.0" />
     <PackageReference Include="FluentIcons.Avalonia" Version="2.0.319" />
     <PackageReference Include="FluentIcons.Avalonia.Fluent" Version="2.0.319" />

LanMountainDesktop/Localization/en-US.json

@@ -1,11 +1,22 @@
 {
     "app.title":  "LanMountainDesktop",
+    "tray.tooltip":  "LanMountainDesktop",
+    "tray.menu.settings":  "Settings",
+    "tray.menu.restart":  "Restart App",
+    "tray.menu.exit":  "Exit App",
     "button.back_to_windows":  "Back to Windows",
     "tooltip.back_to_windows":  "Back to Windows",
     "tooltip.open_settings":  "Settings",
     "settings.title":  "Settings",
+    "settings.shell.title":  "Application Settings",
+    "settings.shell.subtitle":  "LanMountainDesktop standalone preferences",
+    "settings.shell.sidebar_hint":  "Choose a category to adjust application behavior, desktop layout, and appearance.",
+    "settings.shell.footer_hint":  "Tray-opened settings are managed in this standalone window.",
     "settings.back_to_desktop":  "Back to Desktop",
     "settings.nav_header":  "Settings",
+    "settings.nav.group_desktop":  "Desktop",
+    "settings.nav.group_system":  "System",
+    "settings.nav.group_extensions":  "Extensions",
     "settings.nav.wallpaper":  "Wallpaper",
     "settings.nav.grid":  "Grid",
     "settings.nav.color":  "Color",
@@ -109,6 +120,8 @@
     "settings.weather.preview_header":  "Connection Test",
     "settings.weather.preview_desc":  "Send one test request to verify current settings.",
     "settings.weather.preview_button":  "Test Fetch",
+    "settings.weather.preview_section":  "Weather Preview",
+    "settings.weather.settings_section":  "Settings",
     "settings.weather.preview_panel_header":  "Weather Preview",
     "settings.weather.preview_panel_desc":  "Refresh and verify current weather service status.",
     "settings.weather.refresh_button":  "Refresh",
@@ -129,6 +142,15 @@
     "settings.weather.status_city_empty":  "No city location is configured.",
     "settings.weather.status_city_format":  "Mode: {0} | {1} | Key: {2}",
     "settings.weather.status_coordinates_format":  "Mode: {0} | Lat {1:F4}, Lon {2:F4} | Key: {3}",
+    "settings.weather.city_selection_label":  "City Selection",
+    "settings.weather.coordinates_selection_label":  "Coordinate Location",
+    "settings.weather.location_city_summary_desc":  "Select the current city used for weather queries.",
+    "settings.weather.location_coordinates_summary_desc":  "Set latitude/longitude and optional location name used for weather queries.",
+    "settings.weather.location_not_selected":  "No location selected",
+    "settings.weather.alert_list_label":  "Exclude List",
+    "settings.weather.alert_list_desc":  "One exclusion rule per line.",
+    "settings.weather.no_tls_toggle":  "Allow non-TLS request fallback",
+    "settings.weather.footer_hint":  "Desktop weather widgets will reuse the location and alert exclusion settings configured here.",
     "settings.weather.location_header":  "Weather Location",
     "settings.weather.location_desc":  "Set the location used by weather widgets.",
     "settings.weather.location_placeholder":  "e.g. Beijing",
@@ -237,6 +259,25 @@
     "settings.about.startup_header":  "Windows Startup",
     "settings.about.startup_desc":  "Launch the app automatically when signing in to Windows.",
     "settings.about.startup_toggle":  "Launch at Windows sign-in",
+    "settings.about.render_mode_header":  "App Rendering Mode",
+    "settings.about.render_mode_desc":  "Choose the rendering backend. Restart the app after changing this option. Unsupported modes fall back to software.",
+    "settings.about.render_mode.default":  "Default",
+    "settings.about.render_mode.software":  "Software",
+    "settings.about.render_mode.angle_egl":  "angleEgl",
+    "settings.about.render_mode.wgl":  "WGL",
+    "settings.about.render_mode.vulkan":  "Vulkan",
+    "settings.about.render_mode.unknown":  "Unknown",
+    "settings.about.render_mode.current_label":  "Current actual backend",
+    "settings.about.render_mode.current_format":  "Current backend: {0}",
+    "settings.about.render_mode.impl_format":  "Runtime implementation: {0}",
+    "settings.about.render_mode.impl_unavailable":  "Runtime implementation details are unavailable.",
+    "settings.restart_dialog.title":  "Restart required",
+    "settings.restart_dialog.render_mode_message":  "Restart the app to switch the rendering mode from \"{0}\" to \"{1}\". Restart now?",
+    "settings.restart_dialog.restart":  "Restart now",
+    "settings.restart_dialog.cancel":  "Cancel",
+    "settings.restart_dock.title":  "Restart required",
+    "settings.restart_dock.description":  "Some changes will take effect after restarting the app.",
+    "settings.restart_dock.button":  "Restart app",
     "settings.footer":  "LanMountainDesktop Settings",
     "filepicker.title":  "Select wallpaper",
     "filepicker.image_files":  "Image files",
@@ -265,12 +306,98 @@
     "settings.launcher.hidden_empty":  "No hidden items.",
     "settings.launcher.hidden_type_folder":  "Folder",
     "settings.launcher.hidden_type_shortcut":  "Shortcut",
-    "settings.launcher.restore_button":  "Show Again",
+    "settings.launcher.restore_button":  "Unhide",
     "settings.plugins.title":  "Plugins",
     "settings.plugins.runtime_header":  "Plugin Runtime",
-    "settings.plugins.runtime_desc":  "Manage plugin loading and backend isolation.",
-    "settings.plugins.runtime_hint":  "This page will host installed plugin management, permission review, and sandboxed backend runtime controls.",
-    "settings.plugins.runtime_status":  "Plugin management UI is not connected yet. Next step is wiring the loader, permissions, and worker isolation state into this panel.",
+    "settings.plugins.runtime_desc":  "Review plugin runtime state and load results.",
+    "settings.plugins.runtime_hint":  "This page shows discovery status, load results, and runtime diagnostics for installed plugins.",
+    "settings.plugins.runtime_status":  "Plugin runtime status will appear here after plugin discovery completes.",
+    "settings.plugins.installed_header":  "Installed Plugins",
+    "settings.plugins.installed_desc":  "Review installed plugins and remove them here.",
+    "settings.plugins.import_header":  "Install From Package",
+    "settings.plugins.import_desc":  "Open a .laapp package and stage it into the local plugin directory.",
+    "settings.plugins.restart_hint":  "Plugin installation and deletion changes take effect after restarting the app.",
+    "settings.plugins.empty":  "No plugins found.",
+    "settings.plugins.runtime_unavailable":  "Plugin runtime is not available.",
+    "settings.plugins.summary_format":  "Detected {0} plugin(s); enabled {1}; loaded {2}; settings pages {3}; widgets {4}; failures {5}.",
+    "settings.plugins.summary_item_format":  "{0}  v{1}  |  {2}",
+    "settings.plugins.state.enabled":  "Enabled",
+    "settings.plugins.state.enabled_failed":  "Enabled / failed to load",
+    "settings.plugins.state.disabled":  "Disabled",
+    "settings.plugins.state.loaded":  "Loaded",
+    "settings.plugins.state.load_failed":  "Load failed",
+    "settings.plugins.toggle_on":  "Enabled",
+    "settings.plugins.toggle_off":  "Disabled",
+    "settings.plugins.toggle_result_format":  "Plugin '{0}' was {1} for the next launch. Restart the app to apply page and widget changes.",
+    "settings.plugins.toggle_state_enabled":  "enabled",
+    "settings.plugins.toggle_state_disabled":  "disabled",
+    "settings.plugins.toggle_failed_detail_format":  "Failed to update plugin '{0}': {1}",
+    "settings.plugins.install_button":  "Open .laapp package",
+    "settings.plugins.install_unavailable":  "Plugin runtime is unavailable, so .laapp packages cannot be installed right now.",
+    "settings.plugins.install_hint_format":  "Open a .laapp package to install it into: {0}",
+    "settings.plugins.install_picker_title":  "Select plugin package",
+    "settings.plugins.install_file_type":  ".laapp plugin package",
+    "settings.plugins.install_picker_unavailable":  "Storage provider is unavailable.",
+    "settings.plugins.install_copy_failed":  "Failed to copy the selected .laapp package.",
+    "settings.plugins.install_success_format":  "Installed plugin '{0}'. Restart the app to apply newly added settings pages and widgets.",
+    "settings.plugins.install_failed_format":  "Failed to install plugin package: {0}",
+    "settings.plugins.delete_button":  "Delete plugin",
+    "settings.plugins.delete_success_format":  "Plugin '{0}' was staged for deletion. Restart the app to finish removing it.",
+    "settings.plugins.delete_failed_format":  "Failed to delete plugin: {0}",
+    "settings.plugins.delete_failed_detail_format":  "Failed to delete plugin '{0}': {1}",
+    "settings.plugins.publisher_format":  "Publisher: {0}",
+    "settings.plugins.publisher_unknown":  "Unknown publisher",
+    "settings.plugins.source_package":  ".laapp package",
+    "settings.plugins.source_manifest":  "Loose manifest",
+    "settings.plugins.subtitle_format":  "{0} | {1} | {2}",
+    "settings.plugins.detail_format":  "Settings pages: {0} | Widgets: {1}",
+    "settings.nav.plugin_market":  "Plugin Market",
+    "settings.plugin_market.title":  "Plugin Market",
+    "settings.plugin_market.subtitle":  "Browse plugins from the official LanAirApp source and stage installs.",
+    "settings.plugin_market.unavailable":  "Plugin runtime is not available, so the official market cannot be opened right now.",
+    "market.toolbar.search_placeholder":  "Search plugins",
+    "market.toolbar.refresh":  "Refresh",
+    "market.status.loading":  "Loading the official plugin market...",
+    "market.status.loaded_network_format":  "Loaded {0} plugin(s) from the official source.",
+    "market.status.loaded_cache_format":  "Official source unavailable. Loaded {0} plugin(s) from cache. Reason: {1}",
+    "market.status.load_failed_format":  "Failed to load the plugin market: {0}",
+    "market.status.installing_format":  "Downloading and staging plugin '{0}'...",
+    "market.status.install_success_format":  "Plugin '{0}' has been staged. Restart the app to apply it.",
+    "market.status.install_failed_format":  "Failed to install plugin: {0}",
+    "market.status.host_incompatible_format":  "This host is too old. Version {0} or newer is required.",
+    "market.list.empty":  "The plugin market has not been loaded yet.",
+    "market.list.no_results":  "No plugins match the current search.",
+    "market.card.subtitle_format":  "{0} | v{1}",
+    "market.card.loaded":  "Loaded",
+    "market.card.pending_restart":  "Restart required",
+    "market.detail.placeholder":  "Select a plugin on the left to inspect details.",
+    "market.detail.author":  "Author",
+    "market.detail.version":  "Version",
+    "market.detail.api_version":  "API Version",
+    "market.detail.min_host_version":  "Minimum Host Version",
+    "market.detail.installed_version":  "Installed Version",
+    "market.detail.not_installed":  "Not installed",
+    "market.detail.readme":  "README",
+    "market.detail.plugin_information":  "Plugin Information",
+    "market.detail.author_subtitle_format":  "By {0}",
+    "market.detail.package_size":  "Package Size",
+    "market.detail.published_at":  "Published At",
+    "market.detail.updated_at":  "Updated At",
+    "market.detail.tags":  "Tags",
+    "market.detail.project":  "Project",
+    "market.detail.state":  "Install State",
+    "market.detail.market_source":  "Market Source",
+    "market.detail.homepage":  "Homepage",
+    "market.detail.repository":  "Repository",
+    "market.detail.release_notes":  "Release Notes",
+    "market.detail.state.not_installed":  "Not installed",
+    "market.detail.state.update_available":  "Update available",
+    "market.detail.state.installed":  "Installed",
+    "market.detail.unknown":  "Unknown",
+    "market.button.install":  "Install",
+    "market.button.update":  "Update",
+    "market.button.installed":  "Installed",
+    "market.button.installing":  "Installing...",
     "button.component_library":  "Edit Desktop",
     "tooltip.component_library":  "Edit Desktop",
     "component_library.title":  "Widgets",
@@ -617,3 +744,5 @@
     "placement.center":  "Center",
     "placement.tile":  "Tile"
 }
+
+

LanMountainDesktop/Localization/zh-CN.json

@@ -1,11 +1,22 @@
 {
     "app.title":  "LanMountainDesktop",
+    "tray.tooltip":  "LanMountainDesktop",
+    "tray.menu.settings":  "设置",
+    "tray.menu.restart":  "重启应用",
+    "tray.menu.exit":  "退出应用",
     "button.back_to_windows":  "回到Windows",
     "tooltip.back_to_windows":  "回到Windows",
     "tooltip.open_settings":  "设置",
     "settings.title":  "设置",
+    "settings.shell.title":  "应用设置",
+    "settings.shell.subtitle":  "LanMountainDesktop 独立设置窗口",
+    "settings.shell.sidebar_hint":  "选择一个分类以调整应用行为、桌面布局与外观。",
+    "settings.shell.footer_hint":  "托盘菜单打开的设置会统一在这个独立窗口中管理。",
     "settings.back_to_desktop":  "返回桌面",
     "settings.nav_header":  "设置选项",
+    "settings.nav.group_desktop":  "桌面",
+    "settings.nav.group_system":  "系统",
+    "settings.nav.group_extensions":  "扩展",
     "settings.nav.wallpaper":  "壁纸",
     "settings.nav.grid":  "网格",
     "settings.nav.color":  "颜色",
@@ -109,6 +120,8 @@
     "settings.weather.preview_header":  "连接测试",
     "settings.weather.preview_desc":  "发送一次测试请求，验证当前配置是否可用。",
     "settings.weather.preview_button":  "测试获取",
+    "settings.weather.preview_section":  "天气预览",
+    "settings.weather.settings_section":  "设置",
     "settings.weather.preview_panel_header":  "天气预览",
     "settings.weather.preview_panel_desc":  "刷新并验证当前天气服务状态。",
     "settings.weather.refresh_button":  "刷新",
@@ -129,6 +142,15 @@
     "settings.weather.status_city_empty":  "尚未配置城市位置。",
     "settings.weather.status_city_format":  "模式：{0}｜{1}｜Key：{2}",
     "settings.weather.status_coordinates_format":  "模式：{0}｜纬度 {1:F4}，经度 {2:F4}｜Key：{3}",
+    "settings.weather.city_selection_label":  "城市选择",
+    "settings.weather.coordinates_selection_label":  "坐标定位",
+    "settings.weather.location_city_summary_desc":  "选择当前所在的城市，用于天气查询。",
+    "settings.weather.location_coordinates_summary_desc":  "设置经纬度与可选的位置名称，用于天气查询。",
+    "settings.weather.location_not_selected":  "未选择位置",
+    "settings.weather.alert_list_label":  "排除列表",
+    "settings.weather.alert_list_desc":  "一行一条排除项。",
+    "settings.weather.no_tls_toggle":  "允许在兼容性较差的网络环境下回退到非 TLS 请求",
+    "settings.weather.footer_hint":  "桌面上的天气组件会共享这里配置的天气位置与预警排除规则。",
     "settings.weather.location_header":  "天气位置",
     "settings.weather.location_desc":  "设置天气组件使用的位置。",
     "settings.weather.location_placeholder":  "例如：北京",
@@ -237,6 +259,25 @@
     "settings.about.startup_header":  "Windows 自启动",
     "settings.about.startup_desc":  "在登录 Windows 时自动启动应用。",
     "settings.about.startup_toggle":  "登录 Windows 时启动",
+    "settings.about.render_mode_header":  "应用渲染模式",
+    "settings.about.render_mode_desc":  "选择应用渲染后端。更改后需要重启应用生效。不支持的模式会回退到软件渲染。",
+    "settings.about.render_mode.default":  "默认",
+    "settings.about.render_mode.software":  "软件",
+    "settings.about.render_mode.angle_egl":  "angleEgl",
+    "settings.about.render_mode.wgl":  "WGL",
+    "settings.about.render_mode.vulkan":  "Vulkan",
+    "settings.about.render_mode.unknown":  "未知",
+    "settings.about.render_mode.current_label":  "当前实际渲染后端",
+    "settings.about.render_mode.current_format":  "当前后端：{0}",
+    "settings.about.render_mode.impl_format":  "运行时实现：{0}",
+    "settings.about.render_mode.impl_unavailable":  "当前无法获取运行时实现信息。",
+    "settings.restart_dialog.title":  "需要重启应用",
+    "settings.restart_dialog.render_mode_message":  "需要重启应用，才能将渲染模式从“{0}”切换到“{1}”。是否现在重启？",
+    "settings.restart_dialog.restart":  "立即重启",
+    "settings.restart_dialog.cancel":  "取消",
+    "settings.restart_dock.title":  "需要重启应用",
+    "settings.restart_dock.description":  "部分更改需要在重启应用后才会生效。",
+    "settings.restart_dock.button":  "重启应用",
     "settings.footer":  "LanMountainDesktop 设置",
     "filepicker.title":  "选择壁纸",
     "filepicker.image_files":  "图片文件",
@@ -265,12 +306,98 @@
     "settings.launcher.hidden_empty":  "暂无隐藏项目。",
     "settings.launcher.hidden_type_folder":  "文件夹",
     "settings.launcher.hidden_type_shortcut":  "快捷方式",
-    "settings.launcher.restore_button":  "重新显示",
+    "settings.launcher.restore_button":  "取消隐藏",
     "settings.plugins.title":  "插件",
     "settings.plugins.runtime_header":  "插件运行时",
-    "settings.plugins.runtime_desc":  "管理插件加载与后端隔离运行。",
-    "settings.plugins.runtime_hint":  "这里将承载已安装插件、权限审查和沙盒后端运行时控制。",
-    "settings.plugins.runtime_status":  "插件管理界面尚未接入实际数据。下一步是把加载器、权限和 worker 隔离状态接到这里。",
+    "settings.plugins.runtime_desc":  "查看插件运行时状态、加载结果与诊断信息。",
+    "settings.plugins.runtime_hint":  "这里展示已安装插件的发现结果、加载状态和运行时诊断信息。",
+    "settings.plugins.runtime_status":  "插件扫描完成后，运行时状态会显示在这里。",
+    "settings.plugins.installed_header":  "已安装插件",
+    "settings.plugins.installed_desc":  "在这里查看和删除已安装的插件。",
+    "settings.plugins.import_header":  "从安装包导入",
+    "settings.plugins.import_desc":  "打开一个 .laapp 插件包，并将其暂存到本地插件目录。",
+    "settings.plugins.restart_hint":  "插件安装和删除变更会在重启应用后生效。",
+    "settings.plugins.empty":  "未找到插件。",
+    "settings.plugins.runtime_unavailable":  "插件运行时不可用。",
+    "settings.plugins.summary_format":  "共检测到 {0} 个插件；已启用 {1} 个；已加载 {2} 个；设置页 {3} 个；组件 {4} 个；失败 {5} 个。",
+    "settings.plugins.summary_item_format":  "{0}  v{1}  |  {2}",
+    "settings.plugins.state.enabled":  "已启用",
+    "settings.plugins.state.enabled_failed":  "已启用 / 加载失败",
+    "settings.plugins.state.disabled":  "已禁用",
+    "settings.plugins.state.loaded":  "已加载",
+    "settings.plugins.state.load_failed":  "加载失败",
+    "settings.plugins.toggle_on":  "启用",
+    "settings.plugins.toggle_off":  "禁用",
+    "settings.plugins.toggle_result_format":  "插件“{0}”已在下次启动时设为{1}。重启应用后，设置页和组件变更才会生效。",
+    "settings.plugins.toggle_state_enabled":  "启用",
+    "settings.plugins.toggle_state_disabled":  "禁用",
+    "settings.plugins.toggle_failed_detail_format":  "更新插件“{0}”状态失败：{1}",
+    "settings.plugins.install_button":  "打开 .laapp 插件包",
+    "settings.plugins.install_unavailable":  "插件运行时不可用，暂时无法安装 .laapp 插件包。",
+    "settings.plugins.install_hint_format":  "打开一个 .laapp 插件包，安装到：{0}",
+    "settings.plugins.install_picker_title":  "选择插件安装包",
+    "settings.plugins.install_file_type":  ".laapp 插件包",
+    "settings.plugins.install_picker_unavailable":  "文件存储提供程序不可用。",
+    "settings.plugins.install_copy_failed":  "复制所选 .laapp 插件包失败。",
+    "settings.plugins.install_success_format":  "插件“{0}”安装完成。重启应用后，新增的设置页和组件才会生效。",
+    "settings.plugins.install_failed_format":  "安装插件包失败：{0}",
+    "settings.plugins.delete_button":  "删除插件",
+    "settings.plugins.delete_success_format":  "插件“{0}”已暂存删除。重启应用后会完成移除。",
+    "settings.plugins.delete_failed_format":  "删除插件失败：{0}",
+    "settings.plugins.delete_failed_detail_format":  "删除插件“{0}”失败：{1}",
+    "settings.plugins.publisher_format":  "发布者：{0}",
+    "settings.plugins.publisher_unknown":  "未知发布者",
+    "settings.plugins.source_package":  ".laapp 包",
+    "settings.plugins.source_manifest":  "散装清单",
+    "settings.plugins.subtitle_format":  "{0} | {1} | {2}",
+    "settings.plugins.detail_format":  "设置页：{0} | 组件：{1}",
+    "settings.nav.plugin_market":  "插件市场",
+    "settings.plugin_market.title":  "插件市场",
+    "settings.plugin_market.subtitle":  "浏览来自 LanAirApp 官方源的插件，并将安装暂存到本地。",
+    "settings.plugin_market.unavailable":  "插件运行时不可用，暂时无法打开官方市场。",
+    "market.toolbar.search_placeholder":  "搜索插件",
+    "market.toolbar.refresh":  "刷新",
+    "market.status.loading":  "正在加载官方插件市场...",
+    "market.status.loaded_network_format":  "已从官方源加载 {0} 个插件。",
+    "market.status.loaded_cache_format":  "官方源暂时不可用，已从缓存加载 {0} 个插件。原因：{1}",
+    "market.status.load_failed_format":  "加载插件市场失败：{0}",
+    "market.status.installing_format":  "正在下载并暂存插件“{0}”...",
+    "market.status.install_success_format":  "插件“{0}”已暂存完成。重启应用后生效。",
+    "market.status.install_failed_format":  "安装插件失败：{0}",
+    "market.status.host_incompatible_format":  "当前宿主版本过低，至少需要 {0}。",
+    "market.list.empty":  "插件市场尚未加载。",
+    "market.list.no_results":  "没有匹配当前搜索的插件。",
+    "market.card.subtitle_format":  "{0} | v{1}",
+    "market.card.loaded":  "已加载",
+    "market.card.pending_restart":  "需要重启",
+    "market.detail.placeholder":  "从左侧选择一个插件以查看详情。",
+    "market.detail.author":  "作者",
+    "market.detail.version":  "版本",
+    "market.detail.api_version":  "API 版本",
+    "market.detail.min_host_version":  "最低宿主版本",
+    "market.detail.installed_version":  "已安装版本",
+    "market.detail.not_installed":  "未安装",
+    "market.detail.readme":  "README",
+    "market.detail.plugin_information":  "插件信息",
+    "market.detail.author_subtitle_format":  "作者：{0}",
+    "market.detail.package_size":  "包大小",
+    "market.detail.published_at":  "首次发布",
+    "market.detail.updated_at":  "最近更新",
+    "market.detail.tags":  "标签",
+    "market.detail.project":  "项目",
+    "market.detail.state":  "安装状态",
+    "market.detail.market_source":  "市场源",
+    "market.detail.homepage":  "主页",
+    "market.detail.repository":  "仓库",
+    "market.detail.release_notes":  "发布说明",
+    "market.detail.state.not_installed":  "未安装",
+    "market.detail.state.update_available":  "可更新",
+    "market.detail.state.installed":  "已安装",
+    "market.detail.unknown":  "未知",
+    "market.button.install":  "安装",
+    "market.button.update":  "更新",
+    "market.button.installed":  "已安装",
+    "market.button.installing":  "安装中...",
     "button.component_library":  "桌面编辑",
     "tooltip.component_library":  "桌面编辑",
     "component_library.title":  "桌面编辑",
@@ -617,3 +744,5 @@
     "placement.center":  "居中",
     "placement.tile":  "平铺"
 }
+
+

LanMountainDesktop/Models/AppSettingsSnapshot.cs

@@ -20,6 +20,8 @@ public sealed class AppSettingsSnapshot
 
     public int SettingsTabIndex { get; set; } = 0;
 
+    public string? SettingsTabTag { get; set; }
+
     public string LanguageCode { get; set; } = "zh-CN";
 
     public string? TimeZoneId { get; set; }
@@ -46,6 +48,8 @@ public sealed class AppSettingsSnapshot
 
     public bool AutoStartWithWindows { get; set; }
 
+    public string AppRenderMode { get; set; } = "Default";
+
     public bool AutoCheckUpdates { get; set; } = true;
 
     public bool IncludePrereleaseUpdates { get; set; }
@@ -70,6 +74,8 @@ public sealed class AppSettingsSnapshot
 
     public int StatusBarCustomSpacingPercent { get; set; } = 12;
 
+    public List<string> DisabledPluginIds { get; set; } = [];
+
     public AppSettingsSnapshot Clone()
     {
         var clone = (AppSettingsSnapshot)MemberwiseClone();
@@ -80,6 +86,9 @@ public sealed class AppSettingsSnapshot
         clone.PinnedTaskbarActions = PinnedTaskbarActions is { Count: > 0 }
             ? new List<string>(PinnedTaskbarActions)
             : [];
+        clone.DisabledPluginIds = DisabledPluginIds is { Count: > 0 }
+            ? new List<string>(DisabledPluginIds)
+            : [];
 
         return clone;
     }

LanMountainDesktop/PACKAGING.md

@@ -1,75 +1,51 @@
-# Desktop Packaging Guide
+# 桌面端打包指南
 
-## Prerequisites
-- Install `.NET SDK 10`
-- Windows installer build only:
-  - Install `Inno Setup 6` (`ISCC.exe`)
+## 中文
 
-## Local packaging commands
+本指南说明阑山桌面的本地打包和 CI 打包流程。
+
+### 前置条件
+
+- 安装 .NET SDK 10
+- Windows 安装包需要 Inno Setup 6（`ISCC.exe`）
+
+### 本地打包命令
+
+#### Windows 安装包
 
-### Windows installer (`win-x64`)
 ```powershell
 .\scripts\package.ps1 -RuntimeIdentifier win-x64 -Version 1.0.1
 ```
 
-Output:
-- Published files: `artifacts/publish/win-x64`
-- Installer: `artifacts/installer`
+#### Linux 包
 
-### Linux package (`linux-x64`)
 ```powershell
 pwsh ./scripts/package.ps1 -RuntimeIdentifier linux-x64 -Version 1.0.1
 ```
 
-Output:
-- Published files: `artifacts/publish/linux-x64`
-- Zip package: `artifacts/packages/LanMountainDesktop-1.0.1-linux-x64.zip`
+#### macOS 包
 
-### macOS package (`osx-x64`)
 ```powershell
 pwsh ./scripts/package.ps1 -RuntimeIdentifier osx-x64 -Version 1.0.1
 ```
 
-Output:
-- Published files: `artifacts/publish/osx-x64`
-- Zip package: `artifacts/packages/LanMountainDesktop-1.0.1-osx-x64.zip`
+### 产物位置
 
-## Optional script flags
-```powershell
-# Publish only (skip Windows installer step)
-.\scripts\package.ps1 -RuntimeIdentifier win-x64 -SkipInstaller
+- 发布目录：`artifacts/publish/<rid>`
+- 安装包或压缩包：`artifacts/installer` 或 `artifacts/packages`
 
-# Publish only (skip Linux/macOS zip package step)
-pwsh ./scripts/package.ps1 -RuntimeIdentifier linux-x64 -SkipArchive
-```
+### CI 流程
 
-## Runtime dependency notes
-- Linux build does not bundle a native `libvlc` package from NuGet.
-  - Install VLC runtime on target machine, for example:
-    - Ubuntu/Debian: `sudo apt install vlc libvlc-dev`
-- macOS packaging target in CI is currently `osx-x64`.
+- 工作流文件：`.github/workflows/windows-ci.yml`
+- 日常构建会验证桌面端可编译
+- 手动触发或 `v*` 标签可生成正式包并上传到 Release
 
-## CI workflow
-- Workflow file: `.github/workflows/windows-ci.yml`
-- Workflow name: `Desktop CI`
+## English
 
-Jobs:
-- `Validate Build (Windows)` runs on every push and pull request.
-- Package flow runs on manual trigger or `v*` tag push:
-  - `Resolve Package Version` (single shared version source)
-  - `Package (Windows)` (`win-x64` installer)
-  - `Package (Linux)` (`linux-x64` zip)
-  - `Package (macOS)` (`osx-x64` zip)
-- On `v*` tags, `Attach Artifacts to GitHub Release` uploads Windows/Linux/macOS packages to the release.
+This guide covers local packaging and CI packaging for LanMountainDesktop.
 
-### Trigger manual packaging
-1. Open GitHub Actions.
-2. Choose `Desktop CI`.
-3. Click `Run workflow`.
-4. Optional: set `version` input, for example `1.0.1`.
+### Key points
 
-### Trigger by tag
-```powershell
-git tag v1.0.1
-git push origin v1.0.1
-```
+- use `scripts/package.ps1` with the target runtime identifier
+- Windows installer requires Inno Setup
+- CI can publish artifacts and attach them to GitHub Releases

LanMountainDesktop/Program.cs

@@ -1,6 +1,8 @@
-using Avalonia;
+using Avalonia;
 using Avalonia.WebView.Desktop;
+using LanMountainDesktop.Services;
 using System;
+using System.Threading.Tasks;
 
 namespace LanMountainDesktop;
 
@@ -10,14 +12,78 @@ sealed class Program
     // SynchronizationContext-reliant code before AppMain is called: things aren't initialized
     // yet and stuff might break.
     [STAThread]
-    public static void Main(string[] args) => BuildAvaloniaApp()
-        .StartWithClassicDesktopLifetime(args);
+    public static void Main(string[] args)
+    {
+        AppLogger.Initialize();
+        RegisterGlobalExceptionLogging();
+
+        var diagnostics = StartupDiagnosticsService.Run(args);
+        StartupDiagnosticsService.ShowLegacyExecutableWarningIfNeeded(diagnostics);
+
+        try
+        {
+            var renderMode = LoadConfiguredRenderMode();
+            AppLogger.Info("Startup", $"Resolved render mode '{renderMode}'.");
+            BuildAvaloniaApp(renderMode).StartWithClassicDesktopLifetime(args);
+            AppLogger.Info("Startup", "Application exited normally.");
+        }
+        catch (Exception ex)
+        {
+            AppLogger.Critical("Startup", "Application terminated during startup.", ex);
+            throw;
+        }
+    }
 
     // Avalonia configuration, don't remove; also used by visual designer.
-    public static AppBuilder BuildAvaloniaApp()
-        => AppBuilder.Configure<App>()
+    public static AppBuilder BuildAvaloniaApp(string renderMode = AppRenderingModeHelper.Default)
+    {
+        var builder = AppBuilder.Configure<App>()
             .UsePlatformDetect()
             .UseDesktopWebView()
             .WithInterFont()
             .LogToTrace();
+
+        if (OperatingSystem.IsWindows())
+        {
+            var configuredModes = AppRenderingModeHelper.GetWin32RenderingModes(renderMode);
+            if (configuredModes is { Length: > 0 })
+            {
+                builder = builder.With(new Win32PlatformOptions
+                {
+                    RenderingMode = configuredModes
+                });
+            }
+        }
+
+        return builder;
+    }
+
+    private static string LoadConfiguredRenderMode()
+    {
+        try
+        {
+            return AppRenderingModeHelper.Normalize(new AppSettingsService().Load().AppRenderMode);
+        }
+        catch (Exception ex)
+        {
+            AppLogger.Warn("Startup", "Failed to load configured render mode. Falling back to default.", ex);
+            return AppRenderingModeHelper.Default;
+        }
+    }
+
+    private static void RegisterGlobalExceptionLogging()
+    {
+        AppDomain.CurrentDomain.UnhandledException += (_, eventArgs) =>
+        {
+            AppLogger.Critical(
+                "UnhandledException",
+                $"Unhandled exception. IsTerminating={eventArgs.IsTerminating}",
+                eventArgs.ExceptionObject as Exception);
+        };
+
+        TaskScheduler.UnobservedTaskException += (_, eventArgs) =>
+        {
+            AppLogger.Error("TaskScheduler", "Unobserved task exception.", eventArgs.Exception);
+        };
+    }
 }

LanMountainDesktop/Services/AppLogger.cs

@@ -0,0 +1,169 @@
+using System;
+using System.Diagnostics;
+using System.IO;
+using System.Text;
+
+namespace LanMountainDesktop.Services;
+
+public static class AppLogger
+{
+    private static readonly object SyncRoot = new();
+    private static bool _initialized;
+    private static string _logDirectory = string.Empty;
+    private static string _logFilePath = string.Empty;
+
+    public static string LogDirectory
+    {
+        get
+        {
+            EnsureInitialized();
+            return _logDirectory;
+        }
+    }
+
+    public static string LogFilePath
+    {
+        get
+        {
+            EnsureInitialized();
+            return _logFilePath;
+        }
+    }
+
+    public static void Initialize()
+    {
+        lock (SyncRoot)
+        {
+            if (_initialized)
+            {
+                return;
+            }
+
+            var preferredDirectory = Path.Combine(AppContext.BaseDirectory, "log");
+            var fallbackDirectory = Path.Combine(
+                Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData),
+                "LanMountainDesktop",
+                "log");
+
+            var preferredReady = TryPrepareDirectory(preferredDirectory, out var preferredError);
+            var fallbackReady = false;
+            string? fallbackError = null;
+
+            if (preferredReady)
+            {
+                _logDirectory = preferredDirectory;
+            }
+            else
+            {
+                fallbackReady = TryPrepareDirectory(fallbackDirectory, out fallbackError);
+                _logDirectory = fallbackReady ? fallbackDirectory : preferredDirectory;
+            }
+
+            _logFilePath = Path.Combine(_logDirectory, $"app-{DateTime.Now:yyyyMMdd}.log");
+            _initialized = true;
+
+            WriteCore(
+                "INFO",
+                "Logger",
+                $"Initialized. Directory={_logDirectory}; File={_logFilePath}; PreferredDirectory={preferredDirectory}");
+
+            if (!preferredReady && !string.IsNullOrWhiteSpace(preferredError))
+            {
+                WriteCore(
+                    "WARN",
+                    "Logger",
+                    $"Failed to use program log directory '{preferredDirectory}'. Falling back to '{_logDirectory}'. Reason: {preferredError}");
+            }
+
+            if (!preferredReady && !fallbackReady && !string.IsNullOrWhiteSpace(fallbackError))
+            {
+                Trace.WriteLine(
+                    $"[LanMountainDesktop][Logger][ERROR] Failed to initialize fallback log directory '{fallbackDirectory}': {fallbackError}");
+            }
+        }
+    }
+
+    public static void Info(string category, string message)
+    {
+        Write("INFO", category, message, null);
+    }
+
+    public static void Warn(string category, string message, Exception? exception = null)
+    {
+        Write("WARN", category, message, exception);
+    }
+
+    public static void Error(string category, string message, Exception? exception = null)
+    {
+        Write("ERROR", category, message, exception);
+    }
+
+    public static void Critical(string category, string message, Exception? exception = null)
+    {
+        Write("CRITICAL", category, message, exception);
+    }
+
+    private static void Write(string level, string category, string message, Exception? exception)
+    {
+        EnsureInitialized();
+
+        var payload = exception is null
+            ? message
+            : $"{message}{Environment.NewLine}{exception}";
+        WriteCore(level, category, payload);
+    }
+
+    private static void EnsureInitialized()
+    {
+        if (_initialized)
+        {
+            return;
+        }
+
+        Initialize();
+    }
+
+    private static void WriteCore(string level, string category, string message)
+    {
+        var timestamp = DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss.fff");
+        var line = $"[{timestamp}] [{level}] [{category}] {message}";
+
+        lock (SyncRoot)
+        {
+            try
+            {
+                var directory = Path.GetDirectoryName(_logFilePath);
+                if (!string.IsNullOrWhiteSpace(directory))
+                {
+                    Directory.CreateDirectory(directory);
+                }
+
+                File.AppendAllText(_logFilePath, line + Environment.NewLine, Encoding.UTF8);
+            }
+            catch (Exception ex)
+            {
+                Trace.WriteLine($"[LanMountainDesktop][Logger][ERROR] {ex}");
+            }
+        }
+
+        Trace.WriteLine(line);
+    }
+
+    private static bool TryPrepareDirectory(string directory, out string? error)
+    {
+        try
+        {
+            Directory.CreateDirectory(directory);
+            var probePath = Path.Combine(directory, $".probe-{Guid.NewGuid():N}.tmp");
+            File.WriteAllText(probePath, "probe");
+            File.Delete(probePath);
+            error = null;
+            return true;
+        }
+        catch (Exception ex)
+        {
+            error = ex.Message;
+            return false;
+        }
+    }
+}

LanMountainDesktop/Services/AppRenderBackendDiagnostics.cs

@@ -0,0 +1,73 @@
+using System;
+using System.Reflection;
+using Avalonia;
+using Avalonia.Platform;
+
+namespace LanMountainDesktop.Services;
+
+public readonly record struct AppRenderBackendInfo(
+    string ActualBackend,
+    string? ImplementationTypeName);
+
+public static class AppRenderBackendDiagnostics
+{
+    public const string Unknown = "Unknown";
+
+    public static AppRenderBackendInfo Detect()
+    {
+        var platformGraphics = GetPlatformGraphics();
+        var implementationTypeName = platformGraphics?.GetType().FullName;
+        var actualBackend = DetectBackendFromImplementationType(implementationTypeName, platformGraphics is null);
+
+        return new AppRenderBackendInfo(actualBackend, implementationTypeName);
+    }
+
+    private static object? GetPlatformGraphics()
+    {
+        var currentResolver = typeof(AvaloniaLocator)
+            .GetProperty("Current", BindingFlags.Public | BindingFlags.Static)
+            ?.GetValue(null);
+
+        var getServiceMethod = currentResolver?
+            .GetType()
+            .GetMethod(
+                "GetService",
+                BindingFlags.Public | BindingFlags.Instance,
+                binder: null,
+                types: [typeof(Type)],
+                modifiers: null);
+
+        return getServiceMethod?.Invoke(currentResolver, [typeof(IPlatformGraphics)]);
+    }
+
+    private static string DetectBackendFromImplementationType(string? implementationTypeName, bool isSoftwareFallback)
+    {
+        if (isSoftwareFallback)
+        {
+            return AppRenderingModeHelper.Software;
+        }
+
+        if (string.IsNullOrWhiteSpace(implementationTypeName))
+        {
+            return Unknown;
+        }
+
+        if (implementationTypeName.Contains("Vulkan", StringComparison.OrdinalIgnoreCase))
+        {
+            return AppRenderingModeHelper.Vulkan;
+        }
+
+        if (implementationTypeName.Contains("Wgl", StringComparison.OrdinalIgnoreCase))
+        {
+            return AppRenderingModeHelper.Wgl;
+        }
+
+        if (implementationTypeName.Contains("Angle", StringComparison.OrdinalIgnoreCase) ||
+            implementationTypeName.Contains("Egl", StringComparison.OrdinalIgnoreCase))
+        {
+            return AppRenderingModeHelper.AngleEgl;
+        }
+
+        return Unknown;
+    }
+}

LanMountainDesktop/Services/AppRenderingModeHelper.cs

@@ -0,0 +1,42 @@
+using Avalonia;
+
+namespace LanMountainDesktop.Services;
+
+public static class AppRenderingModeHelper
+{
+    public const string Default = "Default";
+    public const string Software = "Software";
+    public const string AngleEgl = "AngleEgl";
+    public const string Wgl = "Wgl";
+    public const string Vulkan = "Vulkan";
+
+    public static string Normalize(string? value)
+    {
+        if (string.IsNullOrWhiteSpace(value))
+        {
+            return Default;
+        }
+
+        return value.Trim().ToUpperInvariant() switch
+        {
+            "SOFTWARE" => Software,
+            "ANGLEEGL" => AngleEgl,
+            "ANGLE_EGL" => AngleEgl,
+            "WGL" => Wgl,
+            "VULKAN" => Vulkan,
+            _ => Default
+        };
+    }
+
+    public static Win32RenderingMode[]? GetWin32RenderingModes(string? value)
+    {
+        return Normalize(value) switch
+        {
+            Software => [Win32RenderingMode.Software],
+            AngleEgl => [Win32RenderingMode.AngleEgl, Win32RenderingMode.Software],
+            Wgl => [Win32RenderingMode.Wgl, Win32RenderingMode.Software],
+            Vulkan => [Win32RenderingMode.Vulkan, Win32RenderingMode.Software],
+            _ => null
+        };
+    }
+}

LanMountainDesktop/Services/AppRestartService.cs

@@ -0,0 +1,171 @@
+using System;
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.IO;
+using System.Reflection;
+using Avalonia;
+using Avalonia.Controls.ApplicationLifetimes;
+
+namespace LanMountainDesktop.Services;
+
+public static class AppRestartService
+{
+    public static bool TryRestartApplication()
+    {
+        if (!TryRestartCurrentProcess())
+        {
+            return false;
+        }
+
+        if (Application.Current?.ApplicationLifetime is IClassicDesktopStyleApplicationLifetime desktop)
+        {
+            desktop.Shutdown();
+        }
+
+        return true;
+    }
+
+    public static bool TryRestartCurrentProcess()
+    {
+        try
+        {
+            var startInfo = CreateRestartStartInfo();
+            if (startInfo is null)
+            {
+                Debug.WriteLine("[AppRestart] Failed to resolve restart start info.");
+                return false;
+            }
+
+            Process.Start(startInfo);
+            return true;
+        }
+        catch (Exception ex)
+        {
+            Debug.WriteLine($"[AppRestart] Failed to restart app: {ex}");
+            return false;
+        }
+    }
+
+    public static ProcessStartInfo? CreateRestartStartInfo(
+        string[]? commandLineArgs = null,
+        string? processPath = null,
+        string? entryAssemblyLocation = null)
+    {
+        var args = commandLineArgs ?? Environment.GetCommandLineArgs();
+        var resolvedProcessPath = NormalizeExistingPath(processPath ?? Environment.ProcessPath);
+        var resolvedEntryAssemblyPath = NormalizeExistingPath(
+            entryAssemblyLocation ?? Assembly.GetEntryAssembly()?.Location);
+
+        if (IsDotnetHost(resolvedProcessPath))
+        {
+            return CreateDotnetStartInfo(
+                resolvedProcessPath!,
+                resolvedEntryAssemblyPath,
+                args);
+        }
+
+        if (!string.IsNullOrWhiteSpace(resolvedProcessPath))
+        {
+            return CreateExecutableStartInfo(
+                resolvedProcessPath,
+                resolvedEntryAssemblyPath,
+                args);
+        }
+
+        if (!string.IsNullOrWhiteSpace(resolvedEntryAssemblyPath) &&
+            string.Equals(Path.GetExtension(resolvedEntryAssemblyPath), ".dll", StringComparison.OrdinalIgnoreCase))
+        {
+            return CreateDotnetStartInfo(
+                "dotnet",
+                resolvedEntryAssemblyPath,
+                args);
+        }
+
+        return null;
+    }
+
+    private static ProcessStartInfo CreateExecutableStartInfo(
+        string executablePath,
+        string? entryAssemblyPath,
+        IReadOnlyList<string> commandLineArgs)
+    {
+        var startInfo = new ProcessStartInfo
+        {
+            FileName = executablePath,
+            UseShellExecute = false,
+            WorkingDirectory = ResolveWorkingDirectory(executablePath, entryAssemblyPath)
+        };
+
+        AppendArguments(startInfo, commandLineArgs);
+        return startInfo;
+    }
+
+    private static ProcessStartInfo? CreateDotnetStartInfo(
+        string dotnetHostPath,
+        string? entryAssemblyPath,
+        IReadOnlyList<string> commandLineArgs)
+    {
+        if (string.IsNullOrWhiteSpace(entryAssemblyPath))
+        {
+            return null;
+        }
+
+        var startInfo = new ProcessStartInfo
+        {
+            FileName = dotnetHostPath,
+            UseShellExecute = false,
+            WorkingDirectory = ResolveWorkingDirectory(dotnetHostPath, entryAssemblyPath)
+        };
+
+        startInfo.ArgumentList.Add(entryAssemblyPath);
+        AppendArguments(startInfo, commandLineArgs);
+        return startInfo;
+    }
+
+    private static void AppendArguments(ProcessStartInfo startInfo, IReadOnlyList<string> commandLineArgs)
+    {
+        for (var i = 1; i < commandLineArgs.Count; i++)
+        {
+            startInfo.ArgumentList.Add(commandLineArgs[i]);
+        }
+    }
+
+    private static string? NormalizeExistingPath(string? path)
+    {
+        if (string.IsNullOrWhiteSpace(path))
+        {
+            return null;
+        }
+
+        try
+        {
+            var fullPath = Path.GetFullPath(path);
+            return File.Exists(fullPath) ? fullPath : null;
+        }
+        catch
+        {
+            return null;
+        }
+    }
+
+    private static bool IsDotnetHost(string? processPath)
+    {
+        if (string.IsNullOrWhiteSpace(processPath))
+        {
+            return false;
+        }
+
+        var fileName = Path.GetFileName(processPath);
+        return string.Equals(fileName, "dotnet", StringComparison.OrdinalIgnoreCase) ||
+               string.Equals(fileName, "dotnet.exe", StringComparison.OrdinalIgnoreCase);
+    }
+
+    private static string ResolveWorkingDirectory(string launchPath, string? entryAssemblyPath)
+    {
+        var basePath = !string.IsNullOrWhiteSpace(entryAssemblyPath)
+            ? entryAssemblyPath
+            : launchPath;
+
+        return Path.GetDirectoryName(basePath) ?? AppContext.BaseDirectory;
+    }
+}

LanMountainDesktop/Services/AppSettingsService.cs

@@ -63,8 +63,9 @@ public sealed class AppSettingsService
                 return loadedSnapshot.Clone();
             }
         }
-        catch
+        catch (Exception ex)
         {
+            AppLogger.Warn("AppSettings", $"Failed to load settings from '{_settingsPath}'.", ex);
             return new AppSettingsSnapshot();
         }
     }
@@ -95,9 +96,9 @@ public sealed class AppSettingsService
 
             SettingsSaved?.Invoke(InstanceId);
         }
-        catch
+        catch (Exception ex)
         {
-            // Swallow persistence errors to keep UI interactions uninterrupted.
+            AppLogger.Warn("AppSettings", $"Failed to save settings to '{_settingsPath}'.", ex);
         }
     }
 
@@ -136,8 +137,9 @@ public sealed class AppSettingsService
             var json = File.ReadAllText(_settingsPath);
             return JsonSerializer.Deserialize<AppSettingsSnapshot>(json, SerializerOptions) ?? new AppSettingsSnapshot();
         }
-        catch
+        catch (Exception ex)
         {
+            AppLogger.Warn("AppSettings", $"Failed to deserialize settings from '{_settingsPath}'.", ex);
             return new AppSettingsSnapshot();
         }
     }

LanMountainDesktop/Services/ComponentSettingsService.cs

@@ -51,8 +51,9 @@ public sealed class ComponentSettingsService : IComponentInstanceSettingsStore
                 return document.DefaultSettings.Clone();
             }
         }
-        catch
+        catch (Exception ex)
         {
+            AppLogger.Warn("ComponentSettings", $"Failed to load component settings from '{_settingsPath}'.", ex);
             return new ComponentSettingsSnapshot();
         }
     }
@@ -76,9 +77,9 @@ public sealed class ComponentSettingsService : IComponentInstanceSettingsStore
                 PersistDocumentLocked(document);
             }
         }
-        catch
+        catch (Exception ex)
         {
-            // Swallow persistence errors to keep UI interactions uninterrupted.
+            AppLogger.Warn("ComponentSettings", $"Failed to save default component settings to '{_settingsPath}'.", ex);
         }
     }
 
@@ -99,8 +100,12 @@ public sealed class ComponentSettingsService : IComponentInstanceSettingsStore
                 return document.DefaultSettings.Clone();
             }
         }
-        catch
+        catch (Exception ex)
         {
+            AppLogger.Warn(
+                "ComponentSettings",
+                $"Failed to load component settings. ComponentId={componentId}; PlacementId={placementId}; Path={_settingsPath}",
+                ex);
             return new ComponentSettingsSnapshot();
         }
     }
@@ -124,9 +129,12 @@ public sealed class ComponentSettingsService : IComponentInstanceSettingsStore
                 PersistDocumentLocked(document);
             }
         }
-        catch
+        catch (Exception ex)
         {
-            // Swallow persistence errors to keep UI interactions uninterrupted.
+            AppLogger.Warn(
+                "ComponentSettings",
+                $"Failed to save component settings. ComponentId={componentId}; PlacementId={placementId}; Path={_settingsPath}",
+                ex);
         }
     }
 
@@ -151,9 +159,12 @@ public sealed class ComponentSettingsService : IComponentInstanceSettingsStore
                 }
             }
         }
-        catch
+        catch (Exception ex)
         {
-            // Swallow persistence errors to keep UI interactions uninterrupted.
+            AppLogger.Warn(
+                "ComponentSettings",
+                $"Failed to delete component settings. ComponentId={componentId}; PlacementId={placementId}; Path={_settingsPath}",
+                ex);
         }
     }
 
@@ -174,8 +185,12 @@ public sealed class ComponentSettingsService : IComponentInstanceSettingsStore
                 return JsonSerializer.Deserialize<T>(settingsElement.GetRawText(), SerializerOptions) ?? new T();
             }
         }
-        catch
+        catch (Exception ex)
         {
+            AppLogger.Warn(
+                "ComponentSettings",
+                $"Failed to load plugin settings. ComponentId={componentId}; PlacementId={placementId}; Path={_settingsPath}",
+                ex);
             return new T();
         }
     }
@@ -197,9 +212,12 @@ public sealed class ComponentSettingsService : IComponentInstanceSettingsStore
                 PersistDocumentLocked(document);
             }
         }
-        catch
+        catch (Exception ex)
         {
-            // Swallow persistence errors to keep UI interactions uninterrupted.
+            AppLogger.Warn(
+                "ComponentSettings",
+                $"Failed to save plugin settings. ComponentId={componentId}; PlacementId={placementId}; Path={_settingsPath}",
+                ex);
         }
     }
 
@@ -222,9 +240,12 @@ public sealed class ComponentSettingsService : IComponentInstanceSettingsStore
                 }
             }
         }
-        catch
+        catch (Exception ex)
         {
-            // Swallow persistence errors to keep UI interactions uninterrupted.
+            AppLogger.Warn(
+                "ComponentSettings",
+                $"Failed to delete plugin settings. ComponentId={componentId}; PlacementId={placementId}; Path={_settingsPath}",
+                ex);
         }
     }
 
@@ -373,8 +394,9 @@ public sealed class ComponentSettingsService : IComponentInstanceSettingsStore
                 DefaultSettings = NormalizeSnapshot(legacySnapshot)
             };
         }
-        catch
+        catch (Exception ex)
         {
+            AppLogger.Warn("ComponentSettings", $"Failed to deserialize component settings from '{_settingsPath}'.", ex);
             return new ComponentSettingsDocumentSnapshot();
         }
     }
@@ -428,8 +450,9 @@ public sealed class ComponentSettingsService : IComponentInstanceSettingsStore
 
             return true;
         }
-        catch
+        catch (Exception ex)
         {
+            AppLogger.Warn("ComponentSettings", $"Failed to migrate legacy component settings from '{_legacyAppSettingsPath}'.", ex);
             return false;
         }
     }

LanMountainDesktop/Services/DesktopComponentRegistryFactory.cs

@@ -0,0 +1,174 @@
+using System;
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.IO;
+using System.Linq;
+using Avalonia;
+using Avalonia.Controls;
+using Avalonia.Layout;
+using Avalonia.Media;
+using LanMountainDesktop.ComponentSystem;
+using LanMountainDesktop.ComponentSystem.Extensions;
+using LanMountainDesktop.PluginSdk;
+using LanMountainDesktop.Views.Components;
+
+namespace LanMountainDesktop.Services;
+
+public static class DesktopComponentRegistryFactory
+{
+    public static ComponentRegistry Create(PluginRuntimeService? pluginRuntimeService)
+    {
+        var registry = ComponentRegistry
+            .CreateDefault()
+            .RegisterExtensions(
+                JsonComponentExtensionProvider.LoadProvidersFromDirectory(
+                    Path.Combine(AppContext.BaseDirectory, "Extensions", "Components")));
+
+        var pluginDefinitions = GetPluginDefinitions(registry, pluginRuntimeService);
+        return pluginDefinitions.Count == 0
+            ? registry
+            : registry.RegisterComponents(pluginDefinitions);
+    }
+
+    public static DesktopComponentRuntimeRegistry CreateRuntimeRegistry(
+        ComponentRegistry componentRegistry,
+        PluginRuntimeService? pluginRuntimeService)
+    {
+        var registrations = DesktopComponentRuntimeRegistry.GetDefaultRegistrations().ToList();
+        var registeredIds = new HashSet<string>(
+            registrations.Select(registration => registration.ComponentId),
+            StringComparer.OrdinalIgnoreCase);
+
+        if (pluginRuntimeService is not null)
+        {
+            foreach (var contribution in pluginRuntimeService.DesktopComponents)
+            {
+                var registration = contribution.Registration;
+                if (!componentRegistry.TryGetDefinition(registration.ComponentId, out _))
+                {
+                    continue;
+                }
+
+                if (!registeredIds.Add(registration.ComponentId))
+                {
+                    Debug.WriteLine(
+                        $"[PluginRuntime] Skipped plugin widget '{registration.ComponentId}' from '{contribution.Plugin.Manifest.Id}' because a runtime registration already exists.");
+                    continue;
+                }
+
+                registrations.Add(new DesktopComponentRuntimeRegistration(
+                    registration.ComponentId,
+                    registration.DisplayNameLocalizationKey,
+                    factoryContext => CreatePluginControl(contribution, factoryContext),
+                    registration.CornerRadiusResolver));
+            }
+        }
+
+        return new DesktopComponentRuntimeRegistry(componentRegistry, registrations);
+    }
+
+    private static List<DesktopComponentDefinition> GetPluginDefinitions(
+        ComponentRegistry baseRegistry,
+        PluginRuntimeService? pluginRuntimeService)
+    {
+        var definitions = new List<DesktopComponentDefinition>();
+        if (pluginRuntimeService is null)
+        {
+            return definitions;
+        }
+
+        var knownIds = new HashSet<string>(
+            baseRegistry.GetAll().Select(definition => definition.Id),
+            StringComparer.OrdinalIgnoreCase);
+
+        foreach (var contribution in pluginRuntimeService.DesktopComponents)
+        {
+            var registration = contribution.Registration;
+            if (!knownIds.Add(registration.ComponentId))
+            {
+                Debug.WriteLine(
+                    $"[PluginRuntime] Skipped plugin widget '{registration.ComponentId}' from '{contribution.Plugin.Manifest.Id}' because the component id already exists.");
+                continue;
+            }
+
+            definitions.Add(new DesktopComponentDefinition(
+                registration.ComponentId,
+                registration.DisplayName,
+                registration.IconKey,
+                registration.Category,
+                registration.MinWidthCells,
+                registration.MinHeightCells,
+                registration.AllowStatusBarPlacement,
+                registration.AllowDesktopPlacement,
+                registration.ResizeMode == PluginDesktopComponentResizeMode.Free
+                    ? DesktopComponentResizeMode.Free
+                    : DesktopComponentResizeMode.Proportional));
+        }
+
+        return definitions;
+    }
+
+    private static Control CreatePluginControl(
+        PluginDesktopComponentContribution contribution,
+        DesktopComponentControlFactoryContext context)
+    {
+        try
+        {
+            var pluginContext = new PluginDesktopComponentContext(
+                contribution.Plugin.Manifest,
+                contribution.Plugin.Context.PluginDirectory,
+                contribution.Plugin.Context.DataDirectory,
+                contribution.Plugin.Context.Services,
+                contribution.Plugin.Context.Properties,
+                contribution.Registration.ComponentId,
+                context.PlacementId,
+                context.CellSize);
+
+            return contribution.Registration.ControlFactory(pluginContext);
+        }
+        catch (Exception ex)
+        {
+            Debug.WriteLine(
+                $"[PluginRuntime] Failed to create widget '{contribution.Registration.ComponentId}' from '{contribution.Plugin.Manifest.Id}': {ex}");
+            return CreatePluginErrorControl(contribution, ex);
+        }
+    }
+
+    private static Control CreatePluginErrorControl(
+        PluginDesktopComponentContribution contribution,
+        Exception exception)
+    {
+        return new Border
+        {
+            Background = new SolidColorBrush(Color.Parse("#332B0F16")),
+            BorderBrush = new SolidColorBrush(Color.Parse("#66F97316")),
+            BorderThickness = new Thickness(1),
+            CornerRadius = new CornerRadius(16),
+            Padding = new Thickness(12),
+            Child = new StackPanel
+            {
+                Spacing = 6,
+                Children =
+                {
+                    new TextBlock
+                    {
+                        Text = contribution.Registration.DisplayName,
+                        FontSize = 14,
+                        FontWeight = FontWeight.SemiBold,
+                        TextWrapping = TextWrapping.Wrap
+                    },
+                    new TextBlock
+                    {
+                        Text = $"Plugin {contribution.Plugin.Manifest.Name} failed to create this widget.",
+                        TextWrapping = TextWrapping.Wrap
+                    },
+                    new TextBlock
+                    {
+                        Text = exception.Message,
+                        TextWrapping = TextWrapping.Wrap
+                    }
+                }
+            }
+        };
+    }
+}

LanMountainDesktop/Services/DesktopLayoutSettingsService.cs

@@ -80,8 +80,9 @@ public sealed class DesktopLayoutSettingsService
                 return normalizedSnapshot.Clone();
             }
         }
-        catch
+        catch (Exception ex)
         {
+            AppLogger.Warn("DesktopLayout", $"Failed to load desktop layout settings from '{_settingsPath}'.", ex);
             return new DesktopLayoutSettingsSnapshot();
         }
     }
@@ -99,9 +100,9 @@ public sealed class DesktopLayoutSettingsService
                 UpdateCache(snapshotToPersist, writeTimeUtc, DateTime.UtcNow);
             }
         }
-        catch
+        catch (Exception ex)
         {
-            // Swallow persistence errors to keep UI interactions uninterrupted.
+            AppLogger.Warn("DesktopLayout", $"Failed to save desktop layout settings to '{_settingsPath}'.", ex);
         }
     }
 
@@ -141,8 +142,9 @@ public sealed class DesktopLayoutSettingsService
             var snapshot = JsonSerializer.Deserialize<DesktopLayoutSettingsSnapshot>(json, SerializerOptions);
             return NormalizeSnapshot(snapshot);
         }
-        catch
+        catch (Exception ex)
         {
+            AppLogger.Warn("DesktopLayout", $"Failed to deserialize desktop layout settings from '{_settingsPath}'.", ex);
             return new DesktopLayoutSettingsSnapshot();
         }
     }
@@ -174,8 +176,9 @@ public sealed class DesktopLayoutSettingsService
 
             return true;
         }
-        catch
+        catch (Exception ex)
         {
+            AppLogger.Warn("DesktopLayout", $"Failed to migrate legacy desktop layout settings from '{_legacyAppSettingsPath}'.", ex);
             return false;
         }
     }

LanMountainDesktop/Services/FileOperationRetryHelper.cs

@@ -0,0 +1,98 @@
+using System;
+using System.IO;
+using System.Threading;
+
+namespace LanMountainDesktop.Services;
+
+internal static class FileOperationRetryHelper
+{
+    private static readonly TimeSpan[] RetryDelays =
+    [
+        TimeSpan.FromMilliseconds(120),
+        TimeSpan.FromMilliseconds(250),
+        TimeSpan.FromMilliseconds(500)
+    ];
+
+    public static void CopyWithRetry(string sourceFilePath, string destinationFilePath, bool overwrite, string category)
+    {
+        Retry(
+            () => File.Copy(sourceFilePath, destinationFilePath, overwrite),
+            category,
+            $"Copy '{sourceFilePath}' -> '{destinationFilePath}'");
+    }
+
+    public static void MoveWithOverwriteRetry(string sourceFilePath, string destinationFilePath, string category)
+    {
+        Retry(
+            () => File.Move(sourceFilePath, destinationFilePath, overwrite: true),
+            category,
+            $"Move '{sourceFilePath}' -> '{destinationFilePath}'");
+    }
+
+    public static void DeleteFileWithRetry(string filePath, string category)
+    {
+        Retry(
+            () =>
+            {
+                if (File.Exists(filePath))
+                {
+                    File.Delete(filePath);
+                }
+            },
+            category,
+            $"Delete file '{filePath}'");
+    }
+
+    public static void DeleteDirectoryWithRetry(string directoryPath, bool recursive, string category)
+    {
+        Retry(
+            () =>
+            {
+                if (Directory.Exists(directoryPath))
+                {
+                    Directory.Delete(directoryPath, recursive);
+                }
+            },
+            category,
+            $"Delete directory '{directoryPath}'");
+    }
+
+    private static void Retry(Action action, string category, string operationDescription)
+    {
+        Exception? lastException = null;
+
+        for (var attempt = 0; attempt <= RetryDelays.Length; attempt++)
+        {
+            try
+            {
+                action();
+                return;
+            }
+            catch (Exception ex) when (IsRetriable(ex))
+            {
+                lastException = ex;
+                if (attempt >= RetryDelays.Length)
+                {
+                    break;
+                }
+
+                var delay = RetryDelays[attempt];
+                AppLogger.Warn(
+                    category,
+                    $"{operationDescription} failed on attempt {attempt + 1}. Retrying after {delay.TotalMilliseconds:0} ms.",
+                    ex);
+                Thread.Sleep(delay);
+            }
+        }
+
+        if (lastException is not null)
+        {
+            throw lastException;
+        }
+    }
+
+    private static bool IsRetriable(Exception exception)
+    {
+        return exception is IOException or UnauthorizedAccessException;
+    }
+}

LanMountainDesktop/Services/GitHubReleaseUpdateService.cs

@@ -45,6 +45,7 @@ public sealed class GitHubReleaseUpdateService : IDisposable
     private readonly string _owner;
     private readonly string _repo;
     private readonly HttpClient _httpClient;
+    private readonly ResumableDownloadService _downloadService;
     private readonly bool _ownsHttpClient;
 
     public GitHubReleaseUpdateService(
@@ -69,6 +70,8 @@ public sealed class GitHubReleaseUpdateService : IDisposable
             _ownsHttpClient = false;
         }
 
+        _downloadService = new ResumableDownloadService(_httpClient);
+
         if (!_httpClient.DefaultRequestHeaders.UserAgent.Any())
         {
             _httpClient.DefaultRequestHeaders.UserAgent.ParseAdd("LanMountainDesktop-Updater/1.0");
@@ -187,59 +190,37 @@ public sealed class GitHubReleaseUpdateService : IDisposable
             return new UpdateDownloadResult(false, null, "Destination file path is empty.");
         }
 
-        try
+        var progressAdapter = progress is null
+            ? null
+            : new Progress<DownloadProgressInfo>(info => progress.Report(info.Progress));
+
+        var result = await _downloadService.DownloadAsync(
+            asset.BrowserDownloadUrl,
+            destinationFilePath,
+            new DownloadOptions(ExpectedSizeBytes: asset.SizeBytes > 0 ? asset.SizeBytes : null),
+            progressAdapter,
+            cancellationToken);
+
+        return result.Success
+            ? new UpdateDownloadResult(true, result.FilePath ?? destinationFilePath, null)
+            : new UpdateDownloadResult(false, null, result.ErrorMessage);
+    }
+
+    public async Task<GitHubReleaseInfo?> GetReleaseByTagAsync(
+        string tagName,
+        CancellationToken cancellationToken = default)
+    {
+        if (string.IsNullOrWhiteSpace(tagName))
         {
-            var directory = Path.GetDirectoryName(destinationFilePath);
-            if (!string.IsNullOrWhiteSpace(directory))
-            {
-                Directory.CreateDirectory(directory);
-            }
-
-            using var response = await _httpClient.GetAsync(
-                asset.BrowserDownloadUrl,
-                HttpCompletionOption.ResponseHeadersRead,
-                cancellationToken);
-
-            if (!response.IsSuccessStatusCode)
-            {
-                return new UpdateDownloadResult(
-                    false,
-                    null,
-                    $"HTTP {(int)response.StatusCode}: {response.ReasonPhrase}");
-            }
-
-            var contentLength = response.Content.Headers.ContentLength ??
-                                (asset.SizeBytes > 0 ? asset.SizeBytes : -1);
-
-            await using var sourceStream = await response.Content.ReadAsStreamAsync(cancellationToken);
-            await using var destinationStream = File.Create(destinationFilePath);
-
-            var buffer = new byte[81920];
-            long totalRead = 0;
-            int read;
-            while ((read = await sourceStream.ReadAsync(buffer, cancellationToken)) > 0)
-            {
-                await destinationStream.WriteAsync(buffer.AsMemory(0, read), cancellationToken);
-                totalRead += read;
-
-                if (contentLength > 0)
-                {
-                    progress?.Report(Math.Clamp(totalRead / (double)contentLength, 0d, 1d));
-                }
-            }
-
-            progress?.Report(1d);
-
-            return new UpdateDownloadResult(true, destinationFilePath, null);
-        }
-        catch (OperationCanceledException)
-        {
-            throw;
-        }
-        catch (Exception ex)
-        {
-            return new UpdateDownloadResult(false, null, ex.Message);
+            return null;
         }
+
+        var url =
+            $"https://api.github.com/repos/{_owner}/{_repo}/releases/tags/{Uri.EscapeDataString(tagName.Trim())}";
+        var responseText = await GetResponseTextAsync(url, cancellationToken);
+
+        using var document = JsonDocument.Parse(responseText);
+        return ParseRelease(document.RootElement);
     }
 
     private async Task<GitHubReleaseInfo?> GetLatestStableReleaseAsync(CancellationToken cancellationToken)

LanMountainDesktop/Services/LauncherSettingsService.cs

@@ -85,8 +85,9 @@ public sealed class LauncherSettingsService
                 return normalizedSnapshot.Clone();
             }
         }
-        catch
+        catch (Exception ex)
         {
+            AppLogger.Warn("LauncherSettings", $"Failed to load launcher settings from '{_settingsPath}'.", ex);
             return new LauncherSettingsSnapshot();
         }
     }
@@ -106,9 +107,9 @@ public sealed class LauncherSettingsService
 
             SettingsSaved?.Invoke(InstanceId);
         }
-        catch
+        catch (Exception ex)
         {
-            // Swallow persistence errors to keep UI interactions uninterrupted.
+            AppLogger.Warn("LauncherSettings", $"Failed to save launcher settings to '{_settingsPath}'.", ex);
         }
     }
 
@@ -148,8 +149,9 @@ public sealed class LauncherSettingsService
             var snapshot = JsonSerializer.Deserialize<LauncherSettingsSnapshot>(json, SerializerOptions);
             return NormalizeSnapshot(snapshot);
         }
-        catch
+        catch (Exception ex)
         {
+            AppLogger.Warn("LauncherSettings", $"Failed to deserialize launcher settings from '{_settingsPath}'.", ex);
             return new LauncherSettingsSnapshot();
         }
     }
@@ -180,8 +182,9 @@ public sealed class LauncherSettingsService
 
             return true;
         }
-        catch
+        catch (Exception ex)
         {
+            AppLogger.Warn("LauncherSettings", $"Failed to migrate legacy launcher settings from '{_legacyAppSettingsPath}'.", ex);
             return false;
         }
     }

LanMountainDesktop/Services/PendingRestartStateService.cs

@@ -0,0 +1,55 @@
+using System;
+using System.Collections.Generic;
+
+namespace LanMountainDesktop.Services;
+
+public static class PendingRestartStateService
+{
+    public const string RenderModeReason = "RenderMode";
+    public const string PluginCatalogReason = "PluginCatalog";
+
+    private static readonly object Gate = new();
+    private static readonly HashSet<string> PendingReasons = new(StringComparer.OrdinalIgnoreCase);
+
+    public static event Action? StateChanged;
+
+    public static bool HasPendingRestart
+    {
+        get
+        {
+            lock (Gate)
+            {
+                return PendingReasons.Count > 0;
+            }
+        }
+    }
+
+    public static bool HasPendingReason(string reason)
+    {
+        lock (Gate)
+        {
+            return PendingReasons.Contains(reason);
+        }
+    }
+
+    public static void SetPending(string reason, bool pending)
+    {
+        if (string.IsNullOrWhiteSpace(reason))
+        {
+            return;
+        }
+
+        var changed = false;
+        lock (Gate)
+        {
+            changed = pending
+                ? PendingReasons.Add(reason)
+                : PendingReasons.Remove(reason);
+        }
+
+        if (changed)
+        {
+            StateChanged?.Invoke();
+        }
+    }
+}

LanMountainDesktop/Services/ResumableDownloadService.cs

@@ -0,0 +1,412 @@
+using System;
+using System.Collections.Concurrent;
+using System.IO;
+using System.Threading;
+using System.Threading.Tasks;
+using Downloader;
+
+namespace LanMountainDesktop.Services;
+
+public sealed record DownloadProgressInfo(
+    long DownloadedBytes,
+    long? TotalBytes,
+    double Progress,
+    bool IsResuming,
+    bool IsParallel);
+
+public sealed record DownloadOptions(
+    long? ExpectedSizeBytes = null,
+    int MaxParallelSegments = 4,
+    int ParallelThresholdBytes = 8 * 1024 * 1024,
+    int BufferSize = 128 * 1024);
+
+public sealed record DownloadResult(
+    bool Success,
+    string? FilePath,
+    string? ErrorMessage,
+    bool UsedResume,
+    bool UsedParallelDownload);
+
+public sealed class ResumableDownloadService
+{
+    private static readonly ConcurrentDictionary<string, SemaphoreSlim> DestinationGates =
+        new(StringComparer.OrdinalIgnoreCase);
+
+    public ResumableDownloadService(System.Net.Http.HttpClient httpClient)
+    {
+    }
+
+    public async Task<DownloadResult> DownloadAsync(
+        string source,
+        string destinationFilePath,
+        DownloadOptions? options = null,
+        IProgress<DownloadProgressInfo>? progress = null,
+        CancellationToken cancellationToken = default)
+    {
+        ArgumentException.ThrowIfNullOrWhiteSpace(source);
+        ArgumentException.ThrowIfNullOrWhiteSpace(destinationFilePath);
+
+        var normalizedOptions = NormalizeOptions(options);
+        var fullDestinationPath = Path.GetFullPath(destinationFilePath);
+        var destinationGate = DestinationGates.GetOrAdd(
+            fullDestinationPath,
+            static _ => new SemaphoreSlim(1, 1));
+
+        await destinationGate.WaitAsync(cancellationToken);
+        try
+        {
+            if (File.Exists(source))
+            {
+                return await CopyLocalFileAsync(
+                    source,
+                    fullDestinationPath,
+                    normalizedOptions,
+                    progress,
+                    cancellationToken);
+            }
+
+            if (!Uri.TryCreate(source, UriKind.Absolute, out var sourceUri) ||
+                (sourceUri.Scheme != Uri.UriSchemeHttp && sourceUri.Scheme != Uri.UriSchemeHttps))
+            {
+                return new DownloadResult(false, null, $"Unsupported download source '{source}'.", false, false);
+            }
+
+            return await DownloadRemoteFileAsync(
+                sourceUri,
+                fullDestinationPath,
+                normalizedOptions,
+                progress,
+                cancellationToken);
+        }
+        catch (OperationCanceledException)
+        {
+            throw;
+        }
+        catch (Exception ex)
+        {
+            AppLogger.Warn(
+                "Downloader",
+                $"Download failed. Source='{source}'; Destination='{fullDestinationPath}'.",
+                ex);
+            return new DownloadResult(false, null, ex.Message, false, false);
+        }
+        finally
+        {
+            destinationGate.Release();
+        }
+    }
+
+    private async Task<DownloadResult> CopyLocalFileAsync(
+        string sourceFilePath,
+        string destinationFilePath,
+        DownloadOptions options,
+        IProgress<DownloadProgressInfo>? progress,
+        CancellationToken cancellationToken)
+    {
+        var fullSourcePath = Path.GetFullPath(sourceFilePath);
+        var fullDestinationPath = Path.GetFullPath(destinationFilePath);
+        var totalBytes = new FileInfo(fullSourcePath).Length;
+
+        var tempFilePath = BuildTempFilePath(fullDestinationPath);
+        PrepareDestination(fullDestinationPath);
+
+        if (CanReuseCompletedDestination(fullDestinationPath, totalBytes))
+        {
+            progress?.Report(new DownloadProgressInfo(totalBytes, totalBytes, 1d, false, false));
+            CleanupLocalPartialArtifacts(tempFilePath);
+            return new DownloadResult(true, fullDestinationPath, null, false, false);
+        }
+
+        long existingBytes = 0;
+        if (File.Exists(tempFilePath))
+        {
+            existingBytes = new FileInfo(tempFilePath).Length;
+            if (existingBytes > totalBytes)
+            {
+                CleanupLocalPartialArtifacts(tempFilePath);
+                existingBytes = 0;
+            }
+        }
+
+        if (!File.Exists(tempFilePath))
+        {
+            await using var tempCreateStream = new FileStream(
+                tempFilePath,
+                FileMode.Create,
+                FileAccess.Write,
+                FileShare.Read,
+                options.BufferSize,
+                FileOptions.Asynchronous | FileOptions.SequentialScan);
+        }
+
+        if (existingBytes >= totalBytes)
+        {
+            CompleteLocalCopy(tempFilePath, fullDestinationPath);
+            progress?.Report(new DownloadProgressInfo(totalBytes, totalBytes, 1d, existingBytes > 0, false));
+            return new DownloadResult(true, fullDestinationPath, null, existingBytes > 0, false);
+        }
+
+        await using var sourceStream = new FileStream(
+            fullSourcePath,
+            FileMode.Open,
+            FileAccess.Read,
+            FileShare.Read,
+            options.BufferSize,
+            FileOptions.Asynchronous | FileOptions.SequentialScan);
+        await using var destinationStream = new FileStream(
+            tempFilePath,
+            FileMode.Open,
+            FileAccess.Write,
+            FileShare.Read,
+            options.BufferSize,
+            FileOptions.Asynchronous | FileOptions.SequentialScan);
+
+        if (existingBytes > 0)
+        {
+            sourceStream.Seek(existingBytes, SeekOrigin.Begin);
+            destinationStream.Seek(existingBytes, SeekOrigin.Begin);
+        }
+
+        await CopyStreamAsync(
+            sourceStream,
+            destinationStream,
+            existingBytes,
+            totalBytes,
+            progress,
+            cancellationToken);
+
+        CompleteLocalCopy(tempFilePath, fullDestinationPath);
+        return new DownloadResult(true, fullDestinationPath, null, existingBytes > 0, false);
+    }
+
+    private async Task<DownloadResult> DownloadRemoteFileAsync(
+        Uri sourceUri,
+        string destinationFilePath,
+        DownloadOptions options,
+        IProgress<DownloadProgressInfo>? progress,
+        CancellationToken cancellationToken)
+    {
+        PrepareDestination(destinationFilePath);
+
+        if (CanReuseCompletedDestination(destinationFilePath, options.ExpectedSizeBytes))
+        {
+            var existingLength = new FileInfo(destinationFilePath).Length;
+            progress?.Report(new DownloadProgressInfo(existingLength, options.ExpectedSizeBytes, 1d, false, false));
+            CleanupDownloaderArtifacts(destinationFilePath);
+            return new DownloadResult(true, destinationFilePath, null, false, false);
+        }
+
+        var usedResume = HasDownloaderResumeArtifacts(destinationFilePath);
+        var usedParallelDownload = ShouldUseParallelDownload(options);
+        var configuration = CreateConfiguration(options, usedParallelDownload);
+        using var downloader = new DownloadService(configuration);
+
+        downloader.DownloadProgressChanged += (_, args) =>
+        {
+            progress?.Report(MapProgress(args, options.ExpectedSizeBytes, usedResume, usedParallelDownload));
+        };
+
+        using var cancellationRegistration = cancellationToken.Register(() =>
+        {
+            try
+            {
+                downloader.CancelAsync();
+            }
+            catch (Exception ex)
+            {
+                AppLogger.Warn(
+                    "Downloader",
+                    $"Failed to cancel Downloader request for '{destinationFilePath}'.",
+                    ex);
+            }
+        });
+
+        AppLogger.Info(
+            "Downloader",
+            $"Starting remote download. Source='{sourceUri}'; Destination='{destinationFilePath}'; Parallel={usedParallelDownload}; ChunkCount={configuration.ChunkCount}; Resume={usedResume}.");
+
+        await downloader.DownloadFileTaskAsync(sourceUri.AbsoluteUri, destinationFilePath);
+
+        if (!File.Exists(destinationFilePath))
+        {
+            throw new FileNotFoundException(
+                $"Downloader completed without producing '{destinationFilePath}'.",
+                destinationFilePath);
+        }
+
+        var finalLength = new FileInfo(destinationFilePath).Length;
+        progress?.Report(new DownloadProgressInfo(
+            finalLength,
+            options.ExpectedSizeBytes ?? finalLength,
+            1d,
+            usedResume,
+            usedParallelDownload));
+
+        AppLogger.Info(
+            "Downloader",
+            $"Remote download completed. Source='{sourceUri}'; Destination='{destinationFilePath}'; Size={finalLength}; Parallel={usedParallelDownload}; Resume={usedResume}.");
+
+        return new DownloadResult(true, destinationFilePath, null, usedResume, usedParallelDownload);
+    }
+
+    private static async Task CopyStreamAsync(
+        Stream sourceStream,
+        Stream destinationStream,
+        long initialDownloadedBytes,
+        long totalBytes,
+        IProgress<DownloadProgressInfo>? progress,
+        CancellationToken cancellationToken)
+    {
+        var buffer = new byte[128 * 1024];
+        var downloadedBytes = initialDownloadedBytes;
+        progress?.Report(new DownloadProgressInfo(downloadedBytes, totalBytes, downloadedBytes / (double)totalBytes, initialDownloadedBytes > 0, false));
+
+        while (true)
+        {
+            var read = await sourceStream.ReadAsync(buffer.AsMemory(0, buffer.Length), cancellationToken);
+            if (read <= 0)
+            {
+                break;
+            }
+
+            await destinationStream.WriteAsync(buffer.AsMemory(0, read), cancellationToken);
+            downloadedBytes += read;
+            progress?.Report(new DownloadProgressInfo(
+                downloadedBytes,
+                totalBytes,
+                Math.Clamp(downloadedBytes / (double)totalBytes, 0d, 1d),
+                initialDownloadedBytes > 0,
+                false));
+        }
+
+        await destinationStream.FlushAsync(cancellationToken);
+    }
+
+    private static DownloadConfiguration CreateConfiguration(DownloadOptions options, bool useParallelDownload)
+    {
+        return new DownloadConfiguration
+        {
+            BufferBlockSize = options.BufferSize,
+            ChunkCount = useParallelDownload ? options.MaxParallelSegments : 1,
+            ParallelCount = useParallelDownload ? options.MaxParallelSegments : 1,
+            ParallelDownload = useParallelDownload,
+            MinimumSizeOfChunking = options.ParallelThresholdBytes,
+            MaxTryAgainOnFailure = 3,
+            ResumeDownloadIfCan = true,
+            ClearPackageOnCompletionWithFailure = false,
+            FileExistPolicy = FileExistPolicy.Delete,
+            DownloadFileExtension = ".part"
+        };
+    }
+
+    private static DownloadProgressInfo MapProgress(
+        DownloadProgressChangedEventArgs args,
+        long? expectedSizeBytes,
+        bool isResuming,
+        bool isParallel)
+    {
+        var totalBytes = args.TotalBytesToReceive > 0
+            ? args.TotalBytesToReceive
+            : expectedSizeBytes;
+        var downloadedBytes = Math.Max(0L, args.ReceivedBytesSize);
+        var normalizedProgress = args.ProgressPercentage > 1d
+            ? args.ProgressPercentage / 100d
+            : args.ProgressPercentage;
+
+        if (totalBytes is > 0 && normalizedProgress <= 0d)
+        {
+            normalizedProgress = downloadedBytes / (double)totalBytes.Value;
+        }
+
+        return new DownloadProgressInfo(
+            downloadedBytes,
+            totalBytes,
+            Math.Clamp(normalizedProgress, 0d, 1d),
+            isResuming,
+            isParallel);
+    }
+
+    private static bool CanReuseCompletedDestination(string destinationFilePath, long? expectedSizeBytes)
+    {
+        if (!File.Exists(destinationFilePath))
+        {
+            return false;
+        }
+
+        if (expectedSizeBytes is not > 0)
+        {
+            return false;
+        }
+
+        return new FileInfo(destinationFilePath).Length == expectedSizeBytes.Value;
+    }
+
+    private static void PrepareDestination(string destinationFilePath)
+    {
+        var directory = Path.GetDirectoryName(destinationFilePath);
+        if (!string.IsNullOrWhiteSpace(directory))
+        {
+            Directory.CreateDirectory(directory);
+        }
+    }
+
+    private static void CleanupLocalPartialArtifacts(string tempFilePath)
+    {
+        if (File.Exists(tempFilePath))
+        {
+            FileOperationRetryHelper.DeleteFileWithRetry(tempFilePath, "Downloader");
+        }
+    }
+
+    private static void CompleteLocalCopy(string tempFilePath, string destinationFilePath)
+    {
+        if (!File.Exists(tempFilePath))
+        {
+            return;
+        }
+
+        FileOperationRetryHelper.MoveWithOverwriteRetry(tempFilePath, destinationFilePath, "Downloader");
+    }
+
+    private static void CleanupDownloaderArtifacts(string destinationFilePath)
+    {
+        var transientFilePath = BuildTempFilePath(destinationFilePath);
+        var metadataFilePath = BuildPackageFilePath(destinationFilePath);
+
+        if (File.Exists(transientFilePath))
+        {
+            FileOperationRetryHelper.DeleteFileWithRetry(transientFilePath, "Downloader");
+        }
+
+        if (File.Exists(metadataFilePath))
+        {
+            FileOperationRetryHelper.DeleteFileWithRetry(metadataFilePath, "Downloader");
+        }
+    }
+
+    private static bool HasDownloaderResumeArtifacts(string destinationFilePath)
+    {
+        return File.Exists(BuildTempFilePath(destinationFilePath)) ||
+               File.Exists(BuildPackageFilePath(destinationFilePath));
+    }
+
+    private static bool ShouldUseParallelDownload(DownloadOptions options)
+    {
+        return options.MaxParallelSegments > 1;
+    }
+
+    private static DownloadOptions NormalizeOptions(DownloadOptions? options)
+    {
+        var normalized = options ?? new DownloadOptions();
+        return normalized with
+        {
+            MaxParallelSegments = Math.Clamp(normalized.MaxParallelSegments, 1, 8),
+            ParallelThresholdBytes = Math.Max(1_048_576, normalized.ParallelThresholdBytes),
+            BufferSize = Math.Max(16 * 1024, normalized.BufferSize)
+        };
+    }
+
+    private static string BuildTempFilePath(string destinationFilePath) => destinationFilePath + ".part";
+
+    private static string BuildPackageFilePath(string destinationFilePath) => destinationFilePath + ".download";
+}

LanMountainDesktop/Services/StartupDiagnosticsService.cs

@@ -0,0 +1,193 @@
+using System;
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.IO;
+using System.Linq;
+using System.Reflection;
+
+namespace LanMountainDesktop.Services;
+
+public sealed class StartupDiagnosticsResult
+{
+    public string ExecutablePath { get; init; } = string.Empty;
+
+    public string BaseDirectory { get; init; } = string.Empty;
+
+    public string ExecutableName { get; init; } = string.Empty;
+
+    public bool IsLegacyExecutableLaunch { get; init; }
+
+    public IReadOnlyList<string> FoundLegacyArtifacts { get; init; } = Array.Empty<string>();
+
+    public IReadOnlyList<string> DeletedLegacyArtifacts { get; init; } = Array.Empty<string>();
+
+    public IReadOnlyList<string> FailedLegacyArtifacts { get; init; } = Array.Empty<string>();
+}
+
+public static class StartupDiagnosticsService
+{
+    private const string CurrentExecutableName = "LanMountainDesktop.exe";
+
+    private static readonly string[] LegacyArtifactNames =
+    [
+        "LanMontainDesktop.exe",
+        "LanMontainDesktop.dll",
+        "LanMontainDesktop.deps.json",
+        "LanMontainDesktop.runtimeconfig.json",
+        "LanMontainDesktop.pdb",
+        "LanMontainDesktop.exe.WebView2"
+    ];
+
+    public static StartupDiagnosticsResult Run(string[] args)
+    {
+        var executablePath = ResolveExecutablePath();
+        var baseDirectory = AppContext.BaseDirectory;
+        var executableName = Path.GetFileName(executablePath);
+        var assemblyVersion = Assembly.GetEntryAssembly()?.GetName().Version?.ToString() ?? "unknown";
+        var fileVersion = string.Empty;
+
+        try
+        {
+            if (!string.IsNullOrWhiteSpace(executablePath) && File.Exists(executablePath))
+            {
+                fileVersion = FileVersionInfo.GetVersionInfo(executablePath).FileVersion ?? string.Empty;
+            }
+        }
+        catch
+        {
+            // Keep diagnostics best-effort.
+        }
+
+        AppLogger.Info(
+            "Startup",
+            $"Application starting. ExecutablePath={executablePath}; BaseDirectory={baseDirectory}; ExecutableName={executableName}; AssemblyVersion={assemblyVersion}; FileVersion={fileVersion}; Args=[{string.Join(", ", args)}]");
+
+        var foundLegacyArtifacts = LegacyArtifactNames
+            .Select(name => Path.Combine(baseDirectory, name))
+            .Where(path => File.Exists(path) || Directory.Exists(path))
+            .OrderBy(path => path, StringComparer.OrdinalIgnoreCase)
+            .ToList();
+
+        var deletedLegacyArtifacts = new List<string>();
+        var failedLegacyArtifacts = new List<string>();
+        foreach (var legacyArtifact in foundLegacyArtifacts)
+        {
+            if (string.Equals(legacyArtifact, executablePath, StringComparison.OrdinalIgnoreCase))
+            {
+                continue;
+            }
+
+            if (TryDeleteLegacyArtifact(legacyArtifact, out var error))
+            {
+                deletedLegacyArtifacts.Add(legacyArtifact);
+            }
+            else if (!string.IsNullOrWhiteSpace(error))
+            {
+                failedLegacyArtifacts.Add($"{legacyArtifact} ({error})");
+            }
+        }
+
+        if (foundLegacyArtifacts.Count > 0)
+        {
+            AppLogger.Warn(
+                "StartupDiagnostics",
+                $"Found legacy artifacts: {string.Join("; ", foundLegacyArtifacts)}");
+        }
+
+        if (deletedLegacyArtifacts.Count > 0)
+        {
+            AppLogger.Info(
+                "StartupDiagnostics",
+                $"Deleted legacy artifacts: {string.Join("; ", deletedLegacyArtifacts)}");
+        }
+
+        if (failedLegacyArtifacts.Count > 0)
+        {
+            AppLogger.Warn(
+                "StartupDiagnostics",
+                $"Failed to delete legacy artifacts: {string.Join("; ", failedLegacyArtifacts)}");
+        }
+
+        var isLegacyExecutableLaunch = string.Equals(
+            executableName,
+            "LanMontainDesktop.exe",
+            StringComparison.OrdinalIgnoreCase);
+
+        if (isLegacyExecutableLaunch)
+        {
+            AppLogger.Warn(
+                "StartupDiagnostics",
+                $"Legacy executable launch detected. Current executable should be '{CurrentExecutableName}', but actual executable is '{executableName}'.");
+        }
+
+        return new StartupDiagnosticsResult
+        {
+            ExecutablePath = executablePath,
+            BaseDirectory = baseDirectory,
+            ExecutableName = executableName,
+            IsLegacyExecutableLaunch = isLegacyExecutableLaunch,
+            FoundLegacyArtifacts = foundLegacyArtifacts,
+            DeletedLegacyArtifacts = deletedLegacyArtifacts,
+            FailedLegacyArtifacts = failedLegacyArtifacts
+        };
+    }
+
+    public static void ShowLegacyExecutableWarningIfNeeded(StartupDiagnosticsResult diagnostics)
+    {
+        if (!diagnostics.IsLegacyExecutableLaunch)
+        {
+            return;
+        }
+
+        var message =
+            "检测到当前是从旧残留可执行文件启动的。\r\n\r\n" +
+            $"当前文件: {diagnostics.ExecutableName}\r\n" +
+            $"当前路径: {diagnostics.ExecutablePath}\r\n\r\n" +
+            $"请改用 {CurrentExecutableName} 启动，以免继续读取旧残留文件。\r\n" +
+            $"日志目录: {AppLogger.LogDirectory}";
+
+        WindowsNativeDialogService.ShowWarning("LanMountainDesktop 启动诊断", message);
+    }
+
+    private static string ResolveExecutablePath()
+    {
+        try
+        {
+            return Environment.ProcessPath ??
+                   Process.GetCurrentProcess().MainModule?.FileName ??
+                   string.Empty;
+        }
+        catch
+        {
+            return string.Empty;
+        }
+    }
+
+    private static bool TryDeleteLegacyArtifact(string path, out string? error)
+    {
+        try
+        {
+            if (File.Exists(path))
+            {
+                File.Delete(path);
+                error = null;
+                return true;
+            }
+
+            if (Directory.Exists(path))
+            {
+                Directory.Delete(path, recursive: true);
+                error = null;
+                return true;
+            }
+
+            error = null;
+            return false;
+        }
+        catch (Exception ex)
+        {
+            error = ex.Message;
+            return false;
+        }
+    }
+}

LanMountainDesktop/Services/WindowsNativeDialogService.cs

@@ -0,0 +1,30 @@
+using System;
+using System.Runtime.InteropServices;
+
+namespace LanMountainDesktop.Services;
+
+internal static class WindowsNativeDialogService
+{
+    private const uint Ok = 0x00000000;
+    private const uint IconWarning = 0x00000030;
+
+    public static void ShowWarning(string caption, string message)
+    {
+        if (!OperatingSystem.IsWindows())
+        {
+            return;
+        }
+
+        try
+        {
+            _ = MessageBoxW(IntPtr.Zero, message, caption, Ok | IconWarning);
+        }
+        catch (Exception ex)
+        {
+            AppLogger.Warn("StartupDiagnostics", "Failed to show legacy executable warning dialog.", ex);
+        }
+    }
+
+    [DllImport("user32.dll", EntryPoint = "MessageBoxW", CharSet = CharSet.Unicode, SetLastError = true)]
+    private static extern int MessageBoxW(IntPtr hWnd, string text, string caption, uint type);
+}

LanMountainDesktop/Services/WindowsStartupService.cs

@@ -30,8 +30,9 @@ public sealed class WindowsStartupService
             return runKey?.GetValue(ValueName) is string value &&
                    !string.IsNullOrWhiteSpace(value);
         }
-        catch
+        catch (Exception ex)
         {
+            AppLogger.Warn("WindowsStartup", "Failed to query startup registry state.", ex);
             return false;
         }
     }
@@ -67,8 +68,9 @@ public sealed class WindowsStartupService
 
             return IsEnabled() == enabled;
         }
-        catch
+        catch (Exception ex)
         {
+            AppLogger.Warn("WindowsStartup", $"Failed to set startup registry state. Enabled={enabled}", ex);
             return false;
         }
     }

LanMountainDesktop/Views/Components/DesktopComponentRuntimeRegistry.cs

@@ -7,24 +7,65 @@ using LanMountainDesktop.Services;
 
 namespace LanMountainDesktop.Views.Components;
 
-public sealed record DesktopComponentRuntimeRegistration(
-    string ComponentId,
-    string DisplayNameLocalizationKey,
-    Func<Control> ControlFactory,
-    Func<double, double>? CornerRadiusResolver = null);
+public sealed record DesktopComponentControlFactoryContext(
+    DesktopComponentDefinition Definition,
+    double CellSize,
+    TimeZoneService TimeZoneService,
+    IWeatherInfoService WeatherInfoService,
+    IRecommendationInfoService RecommendationInfoService,
+    ICalculatorDataService CalculatorDataService,
+    IComponentInstanceSettingsStore ComponentSettingsStore,
+    string? PlacementId = null);
+
+public sealed class DesktopComponentRuntimeRegistration
+{
+    public DesktopComponentRuntimeRegistration(
+        string componentId,
+        string? displayNameLocalizationKey,
+        Func<Control> controlFactory,
+        Func<double, double>? cornerRadiusResolver = null)
+        : this(componentId, displayNameLocalizationKey, _ => controlFactory(), cornerRadiusResolver)
+    {
+    }
+
+    public DesktopComponentRuntimeRegistration(
+        string componentId,
+        string? displayNameLocalizationKey,
+        Func<DesktopComponentControlFactoryContext, Control> controlFactory,
+        Func<double, double>? cornerRadiusResolver = null)
+    {
+        ArgumentException.ThrowIfNullOrWhiteSpace(componentId);
+        ArgumentNullException.ThrowIfNull(controlFactory);
+
+        ComponentId = componentId.Trim();
+        DisplayNameLocalizationKey = string.IsNullOrWhiteSpace(displayNameLocalizationKey)
+            ? null
+            : displayNameLocalizationKey.Trim();
+        ControlFactory = controlFactory;
+        CornerRadiusResolver = cornerRadiusResolver;
+    }
+
+    public string ComponentId { get; }
+
+    public string? DisplayNameLocalizationKey { get; }
+
+    public Func<DesktopComponentControlFactoryContext, Control> ControlFactory { get; }
+
+    public Func<double, double>? CornerRadiusResolver { get; }
+}
 
 public sealed class DesktopComponentRuntimeDescriptor
 {
     private static readonly Func<double, double> DefaultCornerRadiusResolver =
         cellSize => Math.Clamp(cellSize * 0.22, 8, 18);
 
-    private readonly Func<Control> _controlFactory;
+    private readonly Func<DesktopComponentControlFactoryContext, Control> _controlFactory;
     private readonly Func<double, double> _cornerRadiusResolver;
 
     internal DesktopComponentRuntimeDescriptor(
         DesktopComponentDefinition definition,
-        string displayNameLocalizationKey,
-        Func<Control> controlFactory,
+        string? displayNameLocalizationKey,
+        Func<DesktopComponentControlFactoryContext, Control> controlFactory,
         Func<double, double>? cornerRadiusResolver)
     {
         Definition = definition;
@@ -35,7 +76,7 @@ public sealed class DesktopComponentRuntimeDescriptor
 
     public DesktopComponentDefinition Definition { get; }
 
-    public string DisplayNameLocalizationKey { get; }
+    public string? DisplayNameLocalizationKey { get; }
 
     public Control CreateControl(
         double cellSize,
@@ -46,7 +87,15 @@ public sealed class DesktopComponentRuntimeDescriptor
         IComponentInstanceSettingsStore componentSettingsStore,
         string? placementId = null)
     {
-        var control = _controlFactory();
+        var control = _controlFactory(new DesktopComponentControlFactoryContext(
+            Definition,
+            cellSize,
+            timeZoneService,
+            weatherInfoService,
+            recommendationInfoService,
+            calculatorDataService,
+            componentSettingsStore,
+            placementId));
         var runtimeContext = new DesktopComponentRuntimeContext(
             Definition.Id,
             placementId,
@@ -133,12 +182,10 @@ public sealed class DesktopComponentRuntimeRegistry
                 StringComparer.OrdinalIgnoreCase);
     }
 
-    public static DesktopComponentRuntimeRegistry CreateDefault(ComponentRegistry componentRegistry)
+    public static IReadOnlyList<DesktopComponentRuntimeRegistration> GetDefaultRegistrations()
     {
-        return new DesktopComponentRuntimeRegistry(
-            componentRegistry,
-            new[]
-            {
+        return
+        [
                 new DesktopComponentRuntimeRegistration(
                     BuiltInComponentIds.Date,
                     "component.date",
@@ -319,7 +366,12 @@ public sealed class DesktopComponentRuntimeRegistry
                     "component.holiday_calendar",
                     () => new HolidayCalendarWidget(),
                     cellSize => Math.Clamp(cellSize * 0.32, 12, 28))
-            });
+        ];
+    }
+
+    public static DesktopComponentRuntimeRegistry CreateDefault(ComponentRegistry componentRegistry)
+    {
+        return new DesktopComponentRuntimeRegistry(componentRegistry, GetDefaultRegistrations());
     }
 
     public bool TryGetDescriptor(string componentId, out DesktopComponentRuntimeDescriptor descriptor)

LanMountainDesktop/Views/MainWindow.ComponentSystem.cs

@@ -3216,7 +3216,9 @@ public partial class MainWindow
 
     private string GetLocalizedComponentDisplayName(DesktopComponentRuntimeDescriptor descriptor)
     {
-        return L(descriptor.DisplayNameLocalizationKey, descriptor.Definition.DisplayName);
+        return string.IsNullOrWhiteSpace(descriptor.DisplayNameLocalizationKey)
+            ? descriptor.Definition.DisplayName
+            : L(descriptor.DisplayNameLocalizationKey, descriptor.Definition.DisplayName);
     }
 
     private void OnComponentLibraryComponentPreviewPointerPressed(object? sender, PointerPressedEventArgs e)

LanMountainDesktop/Views/MainWindow.DesktopPaging.cs

@@ -13,6 +13,7 @@ using Avalonia.Media;
 using Avalonia.Media.Imaging;
 using Avalonia.Threading;
 using Avalonia.VisualTree;
+using FluentAvalonia.UI.Controls;
 using LanMountainDesktop.Models;
 using LanMountainDesktop.Services;
 
@@ -1069,12 +1070,12 @@ public partial class MainWindow
 
     private void RenderLauncherHiddenItemsList()
     {
-        if (LauncherHiddenItemsListPanel is null || LauncherHiddenItemsEmptyTextBlock is null)
+        if (LauncherHiddenItemsSettingsExpander is null || LauncherHiddenItemsEmptyTextBlock is null)
         {
             return;
         }
 
-        LauncherHiddenItemsListPanel.Children.Clear();
+        LauncherHiddenItemsSettingsExpander.Items.Clear();
         var hiddenItems = BuildLauncherHiddenItems();
         LauncherHiddenItemsEmptyTextBlock.IsVisible = hiddenItems.Count == 0;
         if (hiddenItems.Count == 0)
@@ -1084,7 +1085,7 @@ public partial class MainWindow
 
         foreach (var hiddenItem in hiddenItems)
         {
-            LauncherHiddenItemsListPanel.Children.Add(CreateLauncherHiddenItemRow(hiddenItem));
+            LauncherHiddenItemsSettingsExpander.Items.Add(CreateLauncherHiddenItemRow(hiddenItem));
         }
     }
 
@@ -1186,92 +1187,47 @@ public partial class MainWindow
             : fileName;
     }
 
-    private Control CreateLauncherHiddenItemRow(LauncherHiddenItemView hiddenItem)
+    private SettingsExpanderItem CreateLauncherHiddenItemRow(LauncherHiddenItemView hiddenItem)
     {
-        Control icon = hiddenItem.IconBitmap is not null
-            ? new Image
-            {
-                Source = hiddenItem.IconBitmap,
-                Width = 24,
-                Height = 24,
-                Stretch = Stretch.Uniform
-            }
-            : new Border
-            {
-                Width = 24,
-                Height = 24,
-                CornerRadius = new CornerRadius(999),
-                Background = GetThemeBrush("AdaptiveButtonBackgroundBrush"),
-                Child = new TextBlock
-                {
-                    Text = hiddenItem.Monogram,
-                    FontSize = 10,
-                    FontWeight = FontWeight.Bold,
-                    HorizontalAlignment = HorizontalAlignment.Center,
-                    VerticalAlignment = VerticalAlignment.Center
-                }
-            };
-
         var typeText = hiddenItem.Kind == LauncherEntryKind.Folder
             ? L("settings.launcher.hidden_type_folder", "Folder")
             : L("settings.launcher.hidden_type_shortcut", "Shortcut");
 
-        var infoPanel = new StackPanel
-        {
-            Orientation = Orientation.Horizontal,
-            Spacing = 10,
-            VerticalAlignment = VerticalAlignment.Center,
-            HorizontalAlignment = HorizontalAlignment.Stretch
-        };
-        infoPanel.Children.Add(icon);
-        infoPanel.Children.Add(new StackPanel
-        {
-            Spacing = 2,
-            VerticalAlignment = VerticalAlignment.Center,
-            HorizontalAlignment = HorizontalAlignment.Left,
-            Children =
-            {
-                new TextBlock
-                {
-                    Text = hiddenItem.DisplayName,
-                    TextTrimming = TextTrimming.CharacterEllipsis,
-                    MaxLines = 1
-                },
-                new TextBlock
-                {
-                    Text = typeText,
-                    FontSize = 11,
-                    Opacity = 0.7
-                }
-            }
-        });
-
         var restoreButton = new Button
         {
-            Content = L("settings.launcher.restore_button", "Show Again"),
+            Content = L("settings.launcher.restore_button", "Unhide"),
             MinWidth = 110,
             Padding = new Thickness(12, 6),
             Tag = new LauncherHiddenItemToken(hiddenItem.Kind, hiddenItem.Key)
         };
         restoreButton.Click += OnRestoreLauncherHiddenItemClick;
 
-        var row = new Grid
+        return new SettingsExpanderItem
         {
-            ColumnDefinitions = new ColumnDefinitions("*,Auto"),
-            ColumnSpacing = 10
+            Content = hiddenItem.DisplayName,
+            Description = typeText,
+            IconSource = CreateLauncherHiddenItemIconSource(hiddenItem),
+            IsClickEnabled = false,
+            Footer = restoreButton
         };
-        row.Children.Add(infoPanel);
-        Grid.SetColumn(infoPanel, 0);
-        row.Children.Add(restoreButton);
-        Grid.SetColumn(restoreButton, 1);
+    }
 
-        return new Border
+    private IconSource CreateLauncherHiddenItemIconSource(LauncherHiddenItemView hiddenItem)
+    {
+        if (hiddenItem.IconBitmap is not null)
         {
-            Classes = { "glass-panel" },
-            BorderThickness = new Thickness(0),
-            CornerRadius = new CornerRadius(14),
-            Padding = new Thickness(10, 8),
-            Child = row
+            return new ImageIconSource
+            {
+                Source = hiddenItem.IconBitmap
+            };
+        }
+
+        return new FluentIcons.Avalonia.Fluent.SymbolIconSource
+        {
+            Symbol = hiddenItem.Kind == LauncherEntryKind.Folder
+                ? FluentIcons.Common.Symbol.Folder
+                : FluentIcons.Common.Symbol.Apps,
+            IconVariant = FluentIcons.Common.IconVariant.Regular
         };
     }
 

LanMountainDesktop/Views/MainWindow.Localization.cs

@@ -1,10 +1,12 @@
 using System;
 using System.Collections.Generic;
+using System.Linq;
 using Avalonia.Controls;
 using Avalonia.Interactivity;
 using Avalonia.Layout;
 using FluentIcons.Avalonia;
 using FluentIcons.Common;
+using LanMountainDesktop.Services;
 
 namespace LanMountainDesktop.Views;
 
@@ -117,6 +119,7 @@ public partial class MainWindow
         SettingsNavUpdateItem.Content = L("settings.nav.update", "Update");
         SettingsNavLauncherItem.Content = L("settings.nav.launcher", "App Launcher");
         SettingsNavPluginsItem.Content = L("settings.nav.plugins", "Plugins");
+        SettingsNavPluginMarketItem.Content = L("settings.nav.plugin_market", "Plugin Market");
 
         WallpaperPanelTitleTextBlock.Text = L("settings.wallpaper.title", "Personalize your wallpaper");
         WallpaperPlacementSettingsExpander.Header = L("settings.wallpaper.placement_label", "Placement");
@@ -178,6 +181,14 @@ public partial class MainWindow
         StatusBarSpacingCustomPanel.Content = L("settings.status_bar.spacing_custom_label", "Custom spacing (%)");
 
         WeatherPanelTitleTextBlock.Text = L("settings.weather.title", "Weather");
+        WeatherPreviewSectionTextBlock.Text = L("settings.weather.preview_section", "Weather Preview");
+        WeatherSettingsSectionTextBlock.Text = L("settings.weather.settings_section", "Settings");
+        WeatherPreviewSettingsExpander.Header = L("settings.weather.preview_panel_header", "Weather Preview");
+        WeatherPreviewSettingsExpander.Description = L(
+            "settings.weather.preview_panel_desc",
+            "Refresh and verify current weather service status.");
+        WeatherPreviewButton.Content = L("settings.weather.refresh_button", "Refresh");
+
         WeatherLocationSettingsExpander.Header = L("settings.weather.location_source_header", "Location Source");
         WeatherLocationSettingsExpander.Description = L(
             "settings.weather.location_source_desc",
@@ -187,6 +198,10 @@ public partial class MainWindow
         WeatherLocationModeCityChipItem.Content = L("settings.weather.mode_city_search", "City Search");
         WeatherLocationModeCoordinatesChipItem.Content = L("settings.weather.mode_coordinates", "Coordinates");
         WeatherAutoRefreshToggleSwitch.Content = L("settings.weather.auto_refresh", "Auto refresh location on startup");
+        WeatherLocationSelectionTitleTextBlock.Text = L("settings.weather.city_selection_label", "City Selection");
+        WeatherLocationSelectionDescriptionTextBlock.Text = L(
+            "settings.weather.location_city_summary_desc",
+            "Select the current city used for weather queries.");
 
         WeatherCitySearchSettingsExpander.Header = L("settings.weather.city_search_header", "City Search");
         WeatherCitySearchSettingsExpander.Description = L(
@@ -206,24 +221,12 @@ public partial class MainWindow
         WeatherLocationNameTextBox.Watermark = L("settings.weather.location_name_placeholder", "Display name (optional)");
         WeatherApplyCoordinatesButton.Content = L("settings.weather.apply_coordinates_button", "Apply Coordinates");
 
-        WeatherPreviewSettingsExpander.Header = L("settings.weather.preview_panel_header", "Weather Preview");
-        WeatherPreviewSettingsExpander.Description = L(
-            "settings.weather.preview_panel_desc",
-            "Refresh and verify current weather service status.");
-        WeatherPreviewButton.Content = L("settings.weather.refresh_button", "Refresh");
-
-        WeatherLocationSettingsExpander.Header = L("settings.weather.location_msg_header", "Location Source");
-        WeatherLocationSettingsExpander.Description = L(
-            "settings.weather.location_msg_desc",
-            "Choose how weather widgets resolve location.");
-        WeatherLocationModeCityChipItem.Content = L("settings.weather.mode_city", "City Search");
-        WeatherLocationModeCoordinatesChipItem.Content = L("settings.weather.mode_coordinates", "Coordinates");
-        WeatherAutoRefreshToggleSwitch.Content = L("settings.weather.auto_location_toggle", "Auto refresh location on startup");
-
         WeatherAlertFilterSettingsExpander.Header = L("settings.weather.alert_filter_header", "Excluded Alerts");
         WeatherAlertFilterSettingsExpander.Description = L(
             "settings.weather.alert_filter_desc",
             "Alerts containing these words will not be shown. One rule per line.");
+        WeatherAlertListTitleTextBlock.Text = L("settings.weather.alert_list_label", "Exclude List");
+        WeatherAlertListDescriptionTextBlock.Text = L("settings.weather.alert_list_desc", "One exclusion rule per line.");
         WeatherExcludedAlertsTextBox.Watermark = L("settings.weather.alert_filter_placeholder", "One keyword per line");
 
         WeatherIconPackSettingsExpander.Header = L("settings.weather.icon_style_header", "Weather Icon Style");
@@ -237,6 +240,10 @@ public partial class MainWindow
         WeatherNoTlsSettingsExpander.Description = L(
             "settings.weather.no_tls_desc",
             "Not recommended. Enable only for incompatible network environments.");
+        WeatherNoTlsToggleSwitch.Content = L("settings.weather.no_tls_toggle", "Allow non-TLS request fallback");
+        WeatherFooterHintTextBlock.Text = L(
+            "settings.weather.footer_hint",
+            "Desktop weather widgets will reuse the location and alert exclusion settings configured here.");
 
         if (string.IsNullOrWhiteSpace(_weatherSearchKeyword))
         {
@@ -276,17 +283,8 @@ public partial class MainWindow
             "Right-click an icon in launcher to hide it. Hidden entries appear here.");
         LauncherHiddenItemsEmptyTextBlock.Text = L("settings.launcher.hidden_empty", "No hidden items.");
 
-        PluginSettingsPanelTitleTextBlock.Text = L("settings.plugins.title", "Plugins");
-        PluginSystemSettingsExpander.Header = L("settings.plugins.runtime_header", "Plugin Runtime");
-        PluginSystemSettingsExpander.Description = L(
-            "settings.plugins.runtime_desc",
-            "Manage plugin loading and backend isolation.");
-        PluginSystemDescriptionTextBlock.Text = L(
-            "settings.plugins.runtime_hint",
-            "This page will host installed plugin management, permission review, and sandboxed backend runtime controls.");
-        PluginSystemStatusTextBlock.Text = L(
-            "settings.plugins.runtime_status",
-            "Plugin management UI is not connected yet. Next step is wiring the loader, permissions, and worker isolation state into this panel.");
+        ApplyPluginSettingsLocalization();
+        ApplyPluginMarketSettingsLocalization();
 
         SettingsNavAboutItem.Content = L("settings.nav.about", "About");
         AboutPanelTitleTextBlock.Text = L("settings.about.title", "About");
@@ -306,6 +304,17 @@ public partial class MainWindow
         AboutStartupSettingsExpander.Description = L(
             "settings.about.startup_desc",
             "Launch the app automatically when signing in to Windows.");
+        AboutRenderModeSettingsExpander.Header = L("settings.about.render_mode_header", "Rendering Mode");
+        AboutRenderModeSettingsExpander.Description = L(
+            "settings.about.render_mode_desc",
+            "Choose the rendering backend. Restart the app after changing this option. Unsupported modes fall back to software.");
+        SetAppRenderModeComboItemContent(AppRenderingModeHelper.Default, L("settings.about.render_mode.default", "Default"));
+        SetAppRenderModeComboItemContent(AppRenderingModeHelper.Software, L("settings.about.render_mode.software", "Software"));
+        SetAppRenderModeComboItemContent(AppRenderingModeHelper.AngleEgl, L("settings.about.render_mode.angle_egl", "angleEgl"));
+        SetAppRenderModeComboItemContent(AppRenderingModeHelper.Wgl, L("settings.about.render_mode.wgl", "WGL"));
+        SetAppRenderModeComboItemContent(AppRenderingModeHelper.Vulkan, L("settings.about.render_mode.vulkan", "Vulkan"));
+        UpdateCurrentRenderBackendStatus();
+        UpdatePendingRestartDock();
 
         if (WallpaperPlacementComboBox?.ItemCount >= 5)
         {
@@ -332,6 +341,19 @@ public partial class MainWindow
         UpdateWallpaperDisplay();
     }
 
+    private void SetAppRenderModeComboItemContent(string tag, string content)
+    {
+        var item = AppRenderModeComboBox.Items
+            .OfType<ComboBoxItem>()
+            .FirstOrDefault(candidate =>
+                string.Equals(candidate.Tag?.ToString(), tag, StringComparison.OrdinalIgnoreCase));
+
+        if (item is not null)
+        {
+            item.Content = content;
+        }
+    }
+
     private string GetLocalizedTimeZoneDisplayName(TimeZoneInfo timeZone)
     {
         var offset = timeZone.GetUtcOffset(DateTime.UtcNow);
@@ -402,6 +424,7 @@ public partial class MainWindow
                 WeatherLocationStatusTextBlock.Text = L(
                     "settings.weather.status_city_empty",
                     "No city location is configured.");
+                UpdateWeatherLocationSummaryCard();
                 return;
             }
 
@@ -414,6 +437,7 @@ public partial class MainWindow
                 modeText,
                 locationName,
                 _weatherLocationKey);
+            UpdateWeatherLocationSummaryCard();
             return;
         }
 
@@ -426,5 +450,7 @@ public partial class MainWindow
             string.IsNullOrWhiteSpace(_weatherLocationKey)
                 ? BuildCoordinateLocationKey(_weatherLatitude, _weatherLongitude)
                 : _weatherLocationKey);
+        UpdateWeatherLocationSummaryCard();
     }
 }
+

LanMountainDesktop/Views/MainWindow.RenderBackend.cs

@@ -0,0 +1,42 @@
+using System;
+using LanMountainDesktop.Services;
+
+namespace LanMountainDesktop.Views;
+
+public partial class MainWindow
+{
+    private void UpdateCurrentRenderBackendStatus()
+    {
+        var backendInfo = AppRenderBackendDiagnostics.Detect();
+        var localizedBackend = GetLocalizedRenderBackendName(backendInfo.ActualBackend);
+
+        CurrentRenderBackendLabelTextBlock.Text = L(
+            "settings.about.render_mode.current_label",
+            "Current actual backend");
+        CurrentRenderBackendValueTextBlock.Text = Lf(
+            "settings.about.render_mode.current_format",
+            "Current backend: {0}",
+            localizedBackend);
+        CurrentRenderBackendImplementationTextBlock.Text = string.IsNullOrWhiteSpace(backendInfo.ImplementationTypeName)
+            ? L(
+                "settings.about.render_mode.impl_unavailable",
+                "Runtime implementation is unavailable.")
+            : Lf(
+                "settings.about.render_mode.impl_format",
+                "Runtime implementation: {0}",
+                backendInfo.ImplementationTypeName);
+    }
+
+    private string GetLocalizedRenderBackendName(string renderBackend)
+    {
+        return renderBackend switch
+        {
+            AppRenderingModeHelper.Default => L("settings.about.render_mode.default", "Default"),
+            AppRenderingModeHelper.Software => L("settings.about.render_mode.software", "Software"),
+            AppRenderingModeHelper.AngleEgl => L("settings.about.render_mode.angle_egl", "angleEgl"),
+            AppRenderingModeHelper.Wgl => L("settings.about.render_mode.wgl", "WGL"),
+            AppRenderingModeHelper.Vulkan => L("settings.about.render_mode.vulkan", "Vulkan"),
+            _ => L("settings.about.render_mode.unknown", "Unknown")
+        };
+    }
+}

LanMountainDesktop/Views/MainWindow.RestartPrompt.cs

@@ -0,0 +1,112 @@
+using System.Threading.Tasks;
+using Avalonia.Interactivity;
+using Avalonia.Threading;
+using FluentAvalonia.UI.Controls;
+using LanMountainDesktop.Services;
+
+namespace LanMountainDesktop.Views;
+
+public partial class MainWindow
+{
+    private bool _isRestartPromptVisible;
+
+    private void OnPendingRestartStateChanged()
+    {
+        if (Dispatcher.UIThread.CheckAccess())
+        {
+            UpdatePendingRestartDock();
+            return;
+        }
+
+        Dispatcher.UIThread.Post(UpdatePendingRestartDock);
+    }
+
+    private void UpdatePendingRestartDock()
+    {
+        PendingRestartDock.IsVisible = PendingRestartStateService.HasPendingRestart;
+        PendingRestartDockTitleTextBlock.Text = L("settings.restart_dock.title", "Restart required");
+        PendingRestartDockDescriptionTextBlock.Text = L(
+            "settings.restart_dock.description",
+            "Some changes will take effect after restarting the app.");
+        PendingRestartDockButtonTextBlock.Text = L("settings.restart_dock.button", "Restart app");
+    }
+
+    private async void OnPendingRestartDockButtonClick(object? sender, RoutedEventArgs e)
+    {
+        await ShowGenericRestartPromptAsync();
+    }
+
+    private Task ShowRenderModeRestartPromptAsync(string selectedMode)
+    {
+        var message = Lf(
+            "settings.restart_dialog.render_mode_message",
+            "Restart the app to switch the rendering mode from \"{0}\" to \"{1}\". Restart now?",
+            GetLocalizedAppRenderModeDisplayName(_runningAppRenderMode),
+            GetLocalizedAppRenderModeDisplayName(selectedMode));
+
+        return ShowRestartPromptCoreAsync(message);
+    }
+
+    private Task ShowGenericRestartPromptAsync()
+    {
+        return ShowRestartPromptCoreAsync(L(
+            "settings.restart_dock.description",
+            "Some changes will take effect after restarting the app."));
+    }
+
+    private async Task ShowRestartPromptCoreAsync(string message)
+    {
+        if (_isRestartPromptVisible)
+        {
+            return;
+        }
+
+        _isRestartPromptVisible = true;
+
+        try
+        {
+            var dialog = new ContentDialog
+            {
+                Title = L("settings.restart_dialog.title", "Restart required"),
+                Content = message,
+                PrimaryButtonText = L("settings.restart_dialog.restart", "Restart now"),
+                CloseButtonText = L("settings.restart_dialog.cancel", "Cancel"),
+                DefaultButton = ContentDialogButton.Primary
+            };
+
+            var result = await dialog.ShowAsync(this);
+            if (result == ContentDialogResult.Primary)
+            {
+                if (!AppRestartService.TryRestartApplication())
+                {
+                    UpdatePendingRestartDock();
+                }
+
+                return;
+            }
+
+            UpdatePendingRestartDock();
+        }
+        finally
+        {
+            _isRestartPromptVisible = false;
+        }
+    }
+
+    private string GetLocalizedAppRenderModeDisplayName(string renderMode)
+    {
+        if (renderMode == AppRenderBackendDiagnostics.Unknown)
+        {
+            return L("settings.about.render_mode.unknown", "Unknown");
+        }
+
+        return AppRenderingModeHelper.Normalize(renderMode) switch
+        {
+            AppRenderingModeHelper.Software => L("settings.about.render_mode.software", "Software"),
+            AppRenderingModeHelper.AngleEgl => L("settings.about.render_mode.angle_egl", "angleEgl"),
+            AppRenderingModeHelper.Wgl => L("settings.about.render_mode.wgl", "WGL"),
+            AppRenderingModeHelper.Vulkan => L("settings.about.render_mode.vulkan", "Vulkan"),
+            _ => L("settings.about.render_mode.default", "Default")
+        };
+    }
+}

LanMountainDesktop/Views/MainWindow.Settings.cs

@@ -100,24 +100,7 @@ public partial class MainWindow
 
     private int GetSettingsTabIndex()
     {
-        if (SettingsNavView?.SelectedItem is FluentAvalonia.UI.Controls.NavigationViewItem item)
-        {
-            return item.Tag?.ToString() switch
-            {
-                "Wallpaper" => 0,
-                "Grid" => 1,
-                "Color" => 2,
-                "StatusBar" => 3,
-                "Weather" => 4,
-                "Region" => 5,
-                "Update" => 6,
-                "About" => 7,
-                "Launcher" => 8,
-                "Plugins" => 9,
-                _ => 0
-            };
-        }
-        return 0;
+        return ResolveSelectedSettingsTabIndex();
     }
 
     private void UpdateSettingsTabContent()
@@ -132,7 +115,8 @@ public partial class MainWindow
             UpdateSettingsPanel is null ||
             LauncherSettingsPanel is null ||
             AboutSettingsPanel is null ||
-            PluginSettingsPanel is null)
+            PluginSettingsPanel is null ||
+            PluginMarketSettingsPanel is null)
         {
             return;
         }
@@ -150,12 +134,24 @@ public partial class MainWindow
         AboutSettingsPanel.IsVisible = tag == "About";
         LauncherSettingsPanel.IsVisible = tag == "Launcher";
         PluginSettingsPanel.IsVisible = tag == "Plugins";
+        PluginMarketSettingsPanel.IsVisible = tag == "PluginMarket";
+        UpdatePluginSettingsPageVisibility(tag);
 
         if (tag == "Launcher")
         {
             RenderLauncherHiddenItemsList();
         }
 
+        if (tag == "Plugins")
+        {
+            PluginSettingsPanel.RefreshFromRuntime();
+        }
+
+        if (tag == "PluginMarket")
+        {
+            PluginMarketSettingsPanel.RefreshFromRuntime();
+        }
+
         if (tag == "Grid")
         {
             UpdateGridPreviewLayout();
@@ -984,10 +980,7 @@ public partial class MainWindow
             GridSizeNumberBox.Value = _targetShortSideCells;
             GridSizeSlider.Value = _targetShortSideCells;
 
-            if (SettingsNavView.MenuItems.ElementAtOrDefault(Math.Clamp(snapshot.SettingsTabIndex, 0, 9)) is FluentAvalonia.UI.Controls.NavigationViewItem navItem)
-            {
-                SettingsNavView.SelectedItem = navItem;
-            }
+            RestoreSettingsTabSelection(snapshot);
 
             UpdateSettingsTabContent();
             WallpaperPlacementComboBox.SelectedIndex = GetPlacementIndexFromSetting(snapshot.WallpaperPlacement);
@@ -997,6 +990,7 @@ public partial class MainWindow
             InitializeWeatherSettings(snapshot);
             _ = _componentSettingsService.Load();
             InitializeAutoStartWithWindowsSetting(snapshot);
+            InitializeAppRenderModeSetting(snapshot);
             InitializeUpdateSettings(snapshot);
             InitializeDesktopSurfaceState(desktopLayoutSnapshot);
             InitializeLauncherVisibilitySettings(launcherSnapshot);
@@ -1036,42 +1030,42 @@ public partial class MainWindow
 
     private AppSettingsSnapshot BuildAppSettingsSnapshot()
     {
-        return new AppSettingsSnapshot
-        {
-            GridShortSideCells = _targetShortSideCells,
-            GridSpacingPreset = _gridSpacingPreset,
-            DesktopEdgeInsetPercent = _desktopEdgeInsetPercent,
-            IsNightMode = _isNightMode,
-            ThemeColor = _selectedThemeColor.ToString(),
-            WallpaperPath = _wallpaperPath,
-            WallpaperPlacement = GetPlacementDisplayName(GetSelectedWallpaperPlacement()),
-            SettingsTabIndex = Math.Max(0, GetSettingsTabIndex()),
-            LanguageCode = _languageCode,
-            TimeZoneId = _timeZoneService.CurrentTimeZone.Id,
-            WeatherLocationMode = ToWeatherLocationModeTag(_weatherLocationMode),
-            WeatherLocationKey = _weatherLocationKey,
-            WeatherLocationName = _weatherLocationName,
-            WeatherLatitude = _weatherLatitude,
-            WeatherLongitude = _weatherLongitude,
-            WeatherAutoRefreshLocation = _weatherAutoRefreshLocation,
-            WeatherLocationQuery = BuildLegacyWeatherLocationQuery(),
-            WeatherExcludedAlerts = _weatherExcludedAlertsRaw,
-            WeatherIconPackId = _weatherIconPackId,
-            WeatherNoTlsRequests = _weatherNoTlsRequests,
-            AutoStartWithWindows = _autoStartWithWindows,
-            AutoCheckUpdates = _autoCheckUpdates,
-            IncludePrereleaseUpdates = IncludePrereleaseUpdates,
-            UpdateChannel = IncludePrereleaseUpdates ? "Preview" : "Stable",
-            TopStatusComponentIds = _topStatusComponentIds.ToList(),
-            PinnedTaskbarActions = _pinnedTaskbarActions.Select(action => action.ToString()).ToList(),
-            EnableDynamicTaskbarActions = _enableDynamicTaskbarActions,
-            TaskbarLayoutMode = _taskbarLayoutMode,
-            ClockDisplayFormat = _clockDisplayFormat == ClockDisplayFormat.HourMinute ? "HourMinute" : "HourMinuteSecond",
-            StatusBarSpacingMode = _statusBarSpacingMode,
-            StatusBarCustomSpacingPercent = _statusBarCustomSpacingPercent
-        };
+        var snapshot = _appSettingsService.Load();
+        snapshot.GridShortSideCells = _targetShortSideCells;
+        snapshot.GridSpacingPreset = _gridSpacingPreset;
+        snapshot.DesktopEdgeInsetPercent = _desktopEdgeInsetPercent;
+        snapshot.IsNightMode = _isNightMode;
+        snapshot.ThemeColor = _selectedThemeColor.ToString();
+        snapshot.WallpaperPath = _wallpaperPath;
+        snapshot.WallpaperPlacement = GetPlacementDisplayName(GetSelectedWallpaperPlacement());
+        snapshot.SettingsTabIndex = Math.Max(0, GetSettingsTabIndex());
+        snapshot.SettingsTabTag = GetSelectedSettingsTabTag();
+        snapshot.LanguageCode = _languageCode;
+        snapshot.TimeZoneId = _timeZoneService.CurrentTimeZone.Id;
+        snapshot.WeatherLocationMode = ToWeatherLocationModeTag(_weatherLocationMode);
+        snapshot.WeatherLocationKey = _weatherLocationKey;
+        snapshot.WeatherLocationName = _weatherLocationName;
+        snapshot.WeatherLatitude = _weatherLatitude;
+        snapshot.WeatherLongitude = _weatherLongitude;
+        snapshot.WeatherAutoRefreshLocation = _weatherAutoRefreshLocation;
+        snapshot.WeatherLocationQuery = BuildLegacyWeatherLocationQuery();
+        snapshot.WeatherExcludedAlerts = _weatherExcludedAlertsRaw;
+        snapshot.WeatherIconPackId = _weatherIconPackId;
+        snapshot.WeatherNoTlsRequests = _weatherNoTlsRequests;
+        snapshot.AutoStartWithWindows = _autoStartWithWindows;
+        snapshot.AppRenderMode = _selectedAppRenderMode;
+        snapshot.AutoCheckUpdates = _autoCheckUpdates;
+        snapshot.IncludePrereleaseUpdates = IncludePrereleaseUpdates;
+        snapshot.UpdateChannel = IncludePrereleaseUpdates ? UpdateChannelPreview : UpdateChannelStable;
+        snapshot.TopStatusComponentIds = _topStatusComponentIds.ToList();
+        snapshot.PinnedTaskbarActions = _pinnedTaskbarActions.Select(action => action.ToString()).ToList();
+        snapshot.EnableDynamicTaskbarActions = _enableDynamicTaskbarActions;
+        snapshot.TaskbarLayoutMode = _taskbarLayoutMode;
+        snapshot.ClockDisplayFormat = _clockDisplayFormat == ClockDisplayFormat.HourMinute ? "HourMinute" : "HourMinuteSecond";
+        snapshot.StatusBarSpacingMode = _statusBarSpacingMode;
+        snapshot.StatusBarCustomSpacingPercent = _statusBarCustomSpacingPercent;
+        return snapshot;
     }
-
     private DesktopLayoutSettingsSnapshot BuildDesktopLayoutSettingsSnapshot()
     {
         return new DesktopLayoutSettingsSnapshot
@@ -1081,7 +1075,6 @@ public partial class MainWindow
             DesktopComponentPlacements = _desktopComponentPlacements.ToList()
         };
     }
-
     private LauncherSettingsSnapshot BuildLauncherSettingsSnapshot()
     {
         return new LauncherSettingsSnapshot
@@ -1241,6 +1234,61 @@ public partial class MainWindow
         }
     }
 
+    private void InitializeAppRenderModeSetting(AppSettingsSnapshot snapshot)
+    {
+        _selectedAppRenderMode = AppRenderingModeHelper.Normalize(snapshot.AppRenderMode);
+        _runningAppRenderMode = ResolveActiveAppRenderModeForUi(_selectedAppRenderMode);
+        var renderModeForUi = PendingRestartStateService.HasPendingReason(PendingRestartStateService.RenderModeReason)
+            ? _selectedAppRenderMode
+            : _runningAppRenderMode;
+
+        if (AppRenderModeComboBox is null)
+        {
+            return;
+        }
+
+        _suppressAppRenderModeSelectionEvents = true;
+        try
+        {
+            AppRenderModeComboBox.IsEnabled = OperatingSystem.IsWindows();
+            SelectAppRenderModeInUi(renderModeForUi);
+        }
+        finally
+        {
+            _suppressAppRenderModeSelectionEvents = false;
+        }
+    }
+
+    private void SelectAppRenderModeInUi(string renderMode)
+    {
+        if (AppRenderModeComboBox is null)
+        {
+            return;
+        }
+
+        AppRenderModeComboBox.SelectedIndex = GetAppRenderModeComboBoxIndex(renderMode);
+    }
+
+    private static int GetAppRenderModeComboBoxIndex(string renderMode)
+    {
+        return AppRenderingModeHelper.Normalize(renderMode) switch
+        {
+            AppRenderingModeHelper.Software => 1,
+            AppRenderingModeHelper.AngleEgl => 2,
+            AppRenderingModeHelper.Wgl => 3,
+            AppRenderingModeHelper.Vulkan => 4,
+            _ => 0
+        };
+    }
+
+    private static string ResolveActiveAppRenderModeForUi(string configuredRenderMode)
+    {
+        var detectedRenderMode = AppRenderBackendDiagnostics.Detect().ActualBackend;
+        return string.Equals(detectedRenderMode, AppRenderBackendDiagnostics.Unknown, StringComparison.Ordinal)
+            ? configuredRenderMode
+            : AppRenderingModeHelper.Normalize(detectedRenderMode);
+    }
+
     private static WeatherLocationMode ParseWeatherLocationMode(string? value)
     {
         return string.Equals(value, "Coordinates", StringComparison.OrdinalIgnoreCase)
@@ -1360,6 +1408,8 @@ public partial class MainWindow
         {
             WeatherCoordinateSettingsExpander.IsVisible = _weatherLocationMode == WeatherLocationMode.Coordinates;
         }
+
+        UpdateWeatherLocationSummaryCard();
     }
 
     private void OnWeatherLocationModeSelectionChanged(object? sender, SelectionChangedEventArgs e)
@@ -1508,6 +1558,33 @@ public partial class MainWindow
         PersistSettings();
     }
 
+    private void OnAppRenderModeSelectionChanged(object? sender, SelectionChangedEventArgs e)
+    {
+        if (_suppressAppRenderModeSelectionEvents || AppRenderModeComboBox is null)
+        {
+            return;
+        }
+
+        var selectedMode = AppRenderingModeHelper.Normalize(
+            TryGetSelectedComboBoxTag(AppRenderModeComboBox));
+
+        if (string.Equals(_selectedAppRenderMode, selectedMode, StringComparison.Ordinal))
+        {
+            return;
+        }
+
+        _selectedAppRenderMode = selectedMode;
+        PersistSettings();
+        var requiresRestart = !string.Equals(_runningAppRenderMode, selectedMode, StringComparison.Ordinal);
+        PendingRestartStateService.SetPending(PendingRestartStateService.RenderModeReason, requiresRestart);
+        UpdatePendingRestartDock();
+
+        if (requiresRestart)
+        {
+            _ = ShowRenderModeRestartPromptAsync(selectedMode);
+        }
+    }
+
     private async void OnSearchWeatherCityClick(object? sender, RoutedEventArgs e)
     {
         if (_isWeatherSearchInProgress || WeatherCitySearchTextBox is null || WeatherCityResultsComboBox is null)
@@ -1816,7 +1893,7 @@ public partial class MainWindow
             var weather = snapshot.Current.WeatherText ??
                           L("settings.weather.preview_unknown", "Unknown");
             var temperature = snapshot.Current.TemperatureC.HasValue
-                ? string.Create(CultureInfo.InvariantCulture, $"{snapshot.Current.TemperatureC.Value:F1} C")
+                ? FormatWeatherPreviewTemperature(snapshot.Current.TemperatureC.Value)
                 : "--";
             var updatedAt = snapshot.ObservationTime ?? snapshot.FetchedAt;
 
@@ -1859,6 +1936,14 @@ public partial class MainWindow
 
     private void UpdateWeatherPreviewSummary(int? weatherCode, string temperatureText, DateTimeOffset? updatedAt)
     {
+        if (WeatherPreviewIconImage is not null)
+        {
+            var kind = HyperOS3WeatherTheme.ResolveVisualKind(weatherCode, _isNightMode);
+            WeatherPreviewIconImage.Source = HyperOS3WeatherAssetLoader.LoadImage(
+                HyperOS3WeatherTheme.ResolveIconAsset(kind)) ??
+                HyperOS3WeatherAssetLoader.LoadImage(HyperOS3WeatherTheme.ResolveHeroIconAsset(kind));
+        }
+
         if (WeatherPreviewIconSymbol is not null)
         {
             WeatherPreviewIconSymbol.Symbol = ResolveWeatherPreviewSymbol(weatherCode, _isNightMode);
@@ -1878,10 +1963,15 @@ public partial class MainWindow
         }
 
         WeatherPreviewUpdatedTextBlock.Text = updatedAt.HasValue
-            ? Lf("weather.widget.updated_format", "Updated {0:HH:mm}", updatedAt.Value.LocalDateTime)
+            ? updatedAt.Value.LocalDateTime.ToString("yyyy/M/d HH:mm:ss", CultureInfo.InvariantCulture)
             : "-";
     }
 
+    private static string FormatWeatherPreviewTemperature(double temperatureC)
+    {
+        return string.Create(CultureInfo.InvariantCulture, $"{temperatureC:0.#}°C");
+    }
+
     private static Symbol ResolveWeatherPreviewSymbol(int? weatherCode, bool isNight)
     {
         return weatherCode switch
@@ -1897,6 +1987,38 @@ public partial class MainWindow
         };
     }
 
+    private void UpdateWeatherLocationSummaryCard()
+    {
+        if (WeatherLocationSelectionTitleTextBlock is null ||
+            WeatherLocationSelectionDescriptionTextBlock is null ||
+            WeatherLocationValueTextBlock is null)
+        {
+            return;
+        }
+
+        if (_weatherLocationMode == WeatherLocationMode.Coordinates)
+        {
+            WeatherLocationSelectionTitleTextBlock.Text = L("settings.weather.coordinates_selection_label", "Coordinate Location");
+            WeatherLocationSelectionDescriptionTextBlock.Text = L(
+                "settings.weather.location_coordinates_summary_desc",
+                "Set latitude/longitude and optional location name used for weather queries.");
+            WeatherLocationValueTextBlock.Text = string.IsNullOrWhiteSpace(_weatherLocationName)
+                ? string.Create(CultureInfo.InvariantCulture, $"{_weatherLatitude:F4}, {_weatherLongitude:F4}")
+                : _weatherLocationName;
+            return;
+        }
+
+        WeatherLocationSelectionTitleTextBlock.Text = L("settings.weather.city_selection_label", "City Selection");
+        WeatherLocationSelectionDescriptionTextBlock.Text = L(
+            "settings.weather.location_city_summary_desc",
+            "Select the current city used for weather queries.");
+        WeatherLocationValueTextBlock.Text = !string.IsNullOrWhiteSpace(_weatherLocationName)
+            ? _weatherLocationName
+            : !string.IsNullOrWhiteSpace(_weatherLocationKey)
+                ? _weatherLocationKey
+                : L("settings.weather.location_not_selected", "No location selected");
+    }
+
     private void SetWeatherSearchBusy(bool isBusy)
     {
         if (WeatherSearchButton is not null)
@@ -2598,6 +2720,8 @@ public partial class MainWindow
 
     // --- WeatherSettingsPage ---
     internal TextBlock WeatherPanelTitleTextBlock => WeatherSettingsPanel.FindControl<TextBlock>("WeatherPanelTitleTextBlock")!;
+    internal TextBlock WeatherPreviewSectionTextBlock => WeatherSettingsPanel.FindControl<TextBlock>("WeatherPreviewSectionTextBlock")!;
+    internal TextBlock WeatherSettingsSectionTextBlock => WeatherSettingsPanel.FindControl<TextBlock>("WeatherSettingsSectionTextBlock")!;
     internal FluentAvalonia.UI.Controls.SettingsExpander WeatherPreviewSettingsExpander => WeatherSettingsPanel.FindControl<FluentAvalonia.UI.Controls.SettingsExpander>("WeatherPreviewSettingsExpander")!;
     internal FluentAvalonia.UI.Controls.SettingsExpander WeatherLocationSettingsExpander => WeatherSettingsPanel.FindControl<FluentAvalonia.UI.Controls.SettingsExpander>("WeatherLocationSettingsExpander")!;
     internal FluentAvalonia.UI.Controls.SettingsExpander WeatherCitySearchSettingsExpander => WeatherSettingsPanel.FindControl<FluentAvalonia.UI.Controls.SettingsExpander>("WeatherCitySearchSettingsExpander")!;
@@ -2628,6 +2752,7 @@ public partial class MainWindow
     internal FluentAvalonia.UI.Controls.NumberBox WeatherLongitudeNumberBox => WeatherSettingsPanel.FindControl<FluentAvalonia.UI.Controls.NumberBox>("WeatherLongitudeNumberBox")!;
     internal TextBlock WeatherCoordinateStatusTextBlock => WeatherSettingsPanel.FindControl<TextBlock>("WeatherCoordinateStatusTextBlock")!;
     internal TextBlock WeatherPreviewResultTextBlock => WeatherSettingsPanel.FindControl<TextBlock>("WeatherPreviewResultTextBlock")!;
+    internal Image WeatherPreviewIconImage => WeatherSettingsPanel.FindControl<Image>("WeatherPreviewIconImage")!;
     internal FluentIcons.Avalonia.Fluent.SymbolIcon WeatherPreviewIconSymbol => WeatherSettingsPanel.FindControl<FluentIcons.Avalonia.Fluent.SymbolIcon>("WeatherPreviewIconSymbol")!;
     internal TextBlock WeatherPreviewTemperatureTextBlock => WeatherSettingsPanel.FindControl<TextBlock>("WeatherPreviewTemperatureTextBlock")!;
     internal TextBlock WeatherPreviewUpdatedTextBlock => WeatherSettingsPanel.FindControl<TextBlock>("WeatherPreviewUpdatedTextBlock")!;
@@ -2635,7 +2760,13 @@ public partial class MainWindow
     internal FluentAvalonia.UI.Controls.ProgressRing WeatherPreviewProgressRing => WeatherSettingsPanel.FindControl<FluentAvalonia.UI.Controls.ProgressRing>("WeatherPreviewProgressRing")!;
     internal ComboBoxItem WeatherIconPackFluentRegularItem => WeatherSettingsPanel.FindControl<ComboBoxItem>("WeatherIconPackFluentRegularItem")!;
     internal ComboBoxItem WeatherIconPackFluentFilledItem => WeatherSettingsPanel.FindControl<ComboBoxItem>("WeatherIconPackFluentFilledItem")!;
+    internal TextBlock WeatherLocationSelectionTitleTextBlock => WeatherSettingsPanel.FindControl<TextBlock>("WeatherLocationSelectionTitleTextBlock")!;
+    internal TextBlock WeatherLocationSelectionDescriptionTextBlock => WeatherSettingsPanel.FindControl<TextBlock>("WeatherLocationSelectionDescriptionTextBlock")!;
+    internal TextBlock WeatherLocationValueTextBlock => WeatherSettingsPanel.FindControl<TextBlock>("WeatherLocationValueTextBlock")!;
     internal TextBlock WeatherLocationStatusTextBlock => WeatherSettingsPanel.FindControl<TextBlock>("WeatherLocationStatusTextBlock")!;
+    internal TextBlock WeatherAlertListTitleTextBlock => WeatherSettingsPanel.FindControl<TextBlock>("WeatherAlertListTitleTextBlock")!;
+    internal TextBlock WeatherAlertListDescriptionTextBlock => WeatherSettingsPanel.FindControl<TextBlock>("WeatherAlertListDescriptionTextBlock")!;
+    internal TextBlock WeatherFooterHintTextBlock => WeatherSettingsPanel.FindControl<TextBlock>("WeatherFooterHintTextBlock")!;
 
     // --- UpdateSettingsPage ---
     internal TextBlock UpdatePanelTitleTextBlock => UpdateSettingsPanel.FindControl<TextBlock>("UpdatePanelTitleTextBlock")!;
@@ -2661,7 +2792,12 @@ public partial class MainWindow
     // --- AboutSettingsPage ---
     internal TextBlock AboutPanelTitleTextBlock => AboutSettingsPanel.FindControl<TextBlock>("AboutPanelTitleTextBlock")!;
     internal FluentAvalonia.UI.Controls.SettingsExpander AboutStartupSettingsExpander => AboutSettingsPanel.FindControl<FluentAvalonia.UI.Controls.SettingsExpander>("AboutStartupSettingsExpander")!;
+    internal FluentAvalonia.UI.Controls.SettingsExpander AboutRenderModeSettingsExpander => AboutSettingsPanel.FindControl<FluentAvalonia.UI.Controls.SettingsExpander>("AboutRenderModeSettingsExpander")!;
     internal ToggleSwitch AutoStartWithWindowsToggleSwitch => AboutSettingsPanel.FindControl<ToggleSwitch>("AutoStartWithWindowsToggleSwitch")!;
+    internal ComboBox AppRenderModeComboBox => AboutSettingsPanel.FindControl<ComboBox>("AppRenderModeComboBox")!;
+    internal TextBlock CurrentRenderBackendLabelTextBlock => AboutSettingsPanel.FindControl<TextBlock>("CurrentRenderBackendLabelTextBlock")!;
+    internal TextBlock CurrentRenderBackendValueTextBlock => AboutSettingsPanel.FindControl<TextBlock>("CurrentRenderBackendValueTextBlock")!;
+    internal TextBlock CurrentRenderBackendImplementationTextBlock => AboutSettingsPanel.FindControl<TextBlock>("CurrentRenderBackendImplementationTextBlock")!;
     internal TextBlock VersionTextBlock => AboutSettingsPanel.FindControl<TextBlock>("VersionTextBlock")!;
     internal TextBlock CodeNameTextBlock => AboutSettingsPanel.FindControl<TextBlock>("CodeNameTextBlock")!;
     internal TextBlock FontInfoTextBlock => AboutSettingsPanel.FindControl<TextBlock>("FontInfoTextBlock")!;
@@ -2669,13 +2805,10 @@ public partial class MainWindow
     // --- LauncherSettingsPage ---
     internal TextBlock LauncherSettingsPanelTitleTextBlock => LauncherSettingsPanel.FindControl<TextBlock>("LauncherSettingsPanelTitleTextBlock")!;
     internal FluentAvalonia.UI.Controls.SettingsExpander LauncherHiddenItemsSettingsExpander => LauncherSettingsPanel.FindControl<FluentAvalonia.UI.Controls.SettingsExpander>("LauncherHiddenItemsSettingsExpander")!;
-    internal StackPanel LauncherHiddenItemsListPanel => LauncherSettingsPanel.FindControl<StackPanel>("LauncherHiddenItemsListPanel")!;
     internal TextBlock LauncherHiddenItemsEmptyTextBlock => LauncherSettingsPanel.FindControl<TextBlock>("LauncherHiddenItemsEmptyTextBlock")!;
     internal TextBlock LauncherHiddenItemsDescriptionTextBlock => LauncherSettingsPanel.FindControl<TextBlock>("LauncherHiddenItemsDescriptionTextBlock")!;
 
-    // --- PluginSettingsPage (Added for completeness) ---
-    internal TextBlock PluginSettingsPanelTitleTextBlock => PluginSettingsPanel.FindControl<TextBlock>("PluginSettingsPanelTitleTextBlock")!;
-    internal FluentAvalonia.UI.Controls.SettingsExpander PluginSystemSettingsExpander => PluginSettingsPanel.FindControl<FluentAvalonia.UI.Controls.SettingsExpander>("PluginSystemSettingsExpander")!;
-    internal TextBlock PluginSystemDescriptionTextBlock => PluginSettingsPanel.FindControl<TextBlock>("PluginSystemDescriptionTextBlock")!;
-    internal TextBlock PluginSystemStatusTextBlock => PluginSettingsPanel.FindControl<TextBlock>("PluginSystemStatusTextBlock")!;
 }
+
+
+

LanMountainDesktop/Views/MainWindow.axaml

@@ -377,88 +377,144 @@
                 <Border Classes="mica-strong"
                         CornerRadius="{DynamicResource DesignCornerRadiusXl}"
                         Padding="18">
-                    <ui:NavigationView x:Name="SettingsNavView"
-                                       PaneDisplayMode="Left"
-                                       IsSettingsVisible="False"
-                                       OpenPaneLength="220"
-                                       SelectionChanged="OnSettingsNavSelectionChanged">
-                        <ui:NavigationView.MenuItems>
-                            <ui:NavigationViewItem x:Name="SettingsNavWallpaperItem" Content="壁纸" Tag="Wallpaper" ToolTip.Tip="壁纸">
-                                <ui:NavigationViewItem.IconSource>
-                                    <ic:SymbolIconSource Symbol="Wallpaper" IconVariant="Regular" />
-                                </ui:NavigationViewItem.IconSource>
-                            </ui:NavigationViewItem>
-                            <ui:NavigationViewItem x:Name="SettingsNavGridItem" Content="网格" Tag="Grid" ToolTip.Tip="网格">
-                                <ui:NavigationViewItem.IconSource>
-                                    <ic:SymbolIconSource Symbol="Grid" IconVariant="Regular" />
-                                </ui:NavigationViewItem.IconSource>
-                            </ui:NavigationViewItem>
-                            <ui:NavigationViewItem x:Name="SettingsNavColorItem" Content="颜色" Tag="Color" ToolTip.Tip="颜色">
-                                <ui:NavigationViewItem.IconSource>
-                                    <ic:SymbolIconSource Symbol="Color" IconVariant="Regular" />
-                                </ui:NavigationViewItem.IconSource>
-                            </ui:NavigationViewItem>
-                            <ui:NavigationViewItem x:Name="SettingsNavStatusBarItem" Content="状态栏" Tag="StatusBar" ToolTip.Tip="状态栏">
-                                <ui:NavigationViewItem.IconSource>
-                                    <ic:SymbolIconSource Symbol="Status" IconVariant="Regular" />
-                                </ui:NavigationViewItem.IconSource>
-                            </ui:NavigationViewItem>
-                            <ui:NavigationViewItem x:Name="SettingsNavWeatherItem" Content="天气" Tag="Weather" ToolTip.Tip="天气">
-                                <ui:NavigationViewItem.IconSource>
-                                    <ic:SymbolIconSource Symbol="WeatherSunny" IconVariant="Regular" />
-                                </ui:NavigationViewItem.IconSource>
-                            </ui:NavigationViewItem>
-                            <ui:NavigationViewItem x:Name="SettingsNavRegionItem" Content="地区" Tag="Region" ToolTip.Tip="地区">
-                                <ui:NavigationViewItem.IconSource>
-                                    <ic:SymbolIconSource Symbol="Globe" IconVariant="Regular" />
-                                </ui:NavigationViewItem.IconSource>
-                            </ui:NavigationViewItem>
-                            <ui:NavigationViewItem x:Name="SettingsNavUpdateItem" Content="更新" Tag="Update" ToolTip.Tip="更新">
-                                <ui:NavigationViewItem.IconSource>
-                                    <ic:SymbolIconSource Symbol="ArrowSync" IconVariant="Regular" />
-                                </ui:NavigationViewItem.IconSource>
-                            </ui:NavigationViewItem>
-                            <ui:NavigationViewItem x:Name="SettingsNavAboutItem" Content="关于" Tag="About" ToolTip.Tip="关于">
-                                <ui:NavigationViewItem.IconSource>
-                                    <ic:SymbolIconSource Symbol="Info" IconVariant="Regular" />
-                                </ui:NavigationViewItem.IconSource>
-                            </ui:NavigationViewItem>
-                            <ui:NavigationViewItem x:Name="SettingsNavLauncherItem" Content="应用启动台" Tag="Launcher" ToolTip.Tip="应用启动台">
-                                <ui:NavigationViewItem.IconSource>
-                                    <ic:SymbolIconSource Symbol="Apps" IconVariant="Regular" />
-                                </ui:NavigationViewItem.IconSource>
-                            </ui:NavigationViewItem>
-                            <ui:NavigationViewItem x:Name="SettingsNavPluginsItem" Content="插件" Tag="Plugins" ToolTip.Tip="插件">
-                                <ui:NavigationViewItem.IconSource>
-                                    <ic:SymbolIconSource Symbol="PuzzlePiece" IconVariant="Regular" />
-                                </ui:NavigationViewItem.IconSource>
-                            </ui:NavigationViewItem>
-                        </ui:NavigationView.MenuItems>
+                    <Grid RowDefinitions="*,Auto"
+                          RowSpacing="14">
+                        <ui:NavigationView x:Name="SettingsNavView"
+                                           Grid.Row="0"
+                                           PaneDisplayMode="Left"
+                                           IsSettingsVisible="False"
+                                           OpenPaneLength="220"
+                                           SelectionChanged="OnSettingsNavSelectionChanged">
+                            <ui:NavigationView.MenuItems>
+                                <ui:NavigationViewItem x:Name="SettingsNavWallpaperItem" Content="壁纸" Tag="Wallpaper" ToolTip.Tip="壁纸">
+                                    <ui:NavigationViewItem.IconSource>
+                                        <ic:SymbolIconSource Symbol="Wallpaper" IconVariant="Regular" />
+                                    </ui:NavigationViewItem.IconSource>
+                                </ui:NavigationViewItem>
+                                <ui:NavigationViewItem x:Name="SettingsNavGridItem" Content="网格" Tag="Grid" ToolTip.Tip="网格">
+                                    <ui:NavigationViewItem.IconSource>
+                                        <ic:SymbolIconSource Symbol="Grid" IconVariant="Regular" />
+                                    </ui:NavigationViewItem.IconSource>
+                                </ui:NavigationViewItem>
+                                <ui:NavigationViewItem x:Name="SettingsNavColorItem" Content="颜色" Tag="Color" ToolTip.Tip="颜色">
+                                    <ui:NavigationViewItem.IconSource>
+                                        <ic:SymbolIconSource Symbol="Color" IconVariant="Regular" />
+                                    </ui:NavigationViewItem.IconSource>
+                                </ui:NavigationViewItem>
+                                <ui:NavigationViewItem x:Name="SettingsNavStatusBarItem" Content="状态栏" Tag="StatusBar" ToolTip.Tip="状态栏">
+                                    <ui:NavigationViewItem.IconSource>
+                                        <ic:SymbolIconSource Symbol="Status" IconVariant="Regular" />
+                                    </ui:NavigationViewItem.IconSource>
+                                </ui:NavigationViewItem>
+                                <ui:NavigationViewItem x:Name="SettingsNavWeatherItem" Content="天气" Tag="Weather" ToolTip.Tip="天气">
+                                    <ui:NavigationViewItem.IconSource>
+                                        <ic:SymbolIconSource Symbol="WeatherSunny" IconVariant="Regular" />
+                                    </ui:NavigationViewItem.IconSource>
+                                </ui:NavigationViewItem>
+                                <ui:NavigationViewItem x:Name="SettingsNavRegionItem" Content="地区" Tag="Region" ToolTip.Tip="地区">
+                                    <ui:NavigationViewItem.IconSource>
+                                        <ic:SymbolIconSource Symbol="Globe" IconVariant="Regular" />
+                                    </ui:NavigationViewItem.IconSource>
+                                </ui:NavigationViewItem>
+                                <ui:NavigationViewItem x:Name="SettingsNavUpdateItem" Content="更新" Tag="Update" ToolTip.Tip="更新">
+                                    <ui:NavigationViewItem.IconSource>
+                                        <ic:SymbolIconSource Symbol="ArrowSync" IconVariant="Regular" />
+                                    </ui:NavigationViewItem.IconSource>
+                                </ui:NavigationViewItem>
+                                <ui:NavigationViewItem x:Name="SettingsNavAboutItem" Content="关于" Tag="About" ToolTip.Tip="关于">
+                                    <ui:NavigationViewItem.IconSource>
+                                        <ic:SymbolIconSource Symbol="Info" IconVariant="Regular" />
+                                    </ui:NavigationViewItem.IconSource>
+                                </ui:NavigationViewItem>
+                                <ui:NavigationViewItem x:Name="SettingsNavLauncherItem" Content="应用启动台" Tag="Launcher" ToolTip.Tip="应用启动台">
+                                    <ui:NavigationViewItem.IconSource>
+                                        <ic:SymbolIconSource Symbol="Apps" IconVariant="Regular" />
+                                    </ui:NavigationViewItem.IconSource>
+                                </ui:NavigationViewItem>
+                                <ui:NavigationViewItem x:Name="SettingsNavPluginsItem" Content="插件" Tag="Plugins" ToolTip.Tip="插件">
+                                    <ui:NavigationViewItem.IconSource>
+                                        <ic:SymbolIconSource Symbol="PuzzlePiece" IconVariant="Regular" />
+                                    </ui:NavigationViewItem.IconSource>
+                                </ui:NavigationViewItem>
+                                <ui:NavigationViewItem x:Name="SettingsNavPluginMarketItem" Content="插件市场" Tag="PluginMarket" ToolTip.Tip="插件市场">
+                                    <ui:NavigationViewItem.IconSource>
+                                        <ic:SymbolIconSource Symbol="PuzzlePiece" IconVariant="Regular" />
+                                    </ui:NavigationViewItem.IconSource>
+                                </ui:NavigationViewItem>
+                            </ui:NavigationView.MenuItems>
 
-                        <ScrollViewer x:Name="SettingsContentScrollViewer"
-                                      Padding="0,0,16,0"
-                                      HorizontalScrollBarVisibility="Disabled"
-                                      VerticalScrollBarVisibility="Auto">
-                            <Grid>
-                                    <pages:WallpaperSettingsPage x:Name="WallpaperSettingsPanel" IsVisible="True" />
+                            <ScrollViewer x:Name="SettingsContentScrollViewer"
+                                          Padding="0,0,16,0"
+                                          HorizontalScrollBarVisibility="Disabled"
+                                          VerticalScrollBarVisibility="Auto">
+                                <Grid x:Name="SettingsContentPagesHost">
+                                        <pages:WallpaperSettingsPage x:Name="WallpaperSettingsPanel" IsVisible="True" />
 
-                                <pages:GridSettingsPage x:Name="GridSettingsPanel" IsVisible="False" />
+                                    <pages:GridSettingsPage x:Name="GridSettingsPanel" IsVisible="False" />
 
-                                <pages:ColorSettingsPage x:Name="ColorSettingsPanel" IsVisible="False" />
+                                    <pages:ColorSettingsPage x:Name="ColorSettingsPanel" IsVisible="False" />
 
-                                <pages:StatusBarSettingsPage x:Name="StatusBarSettingsPanel" IsVisible="False" />
-                                
-                                <pages:WeatherSettingsPage x:Name="WeatherSettingsPanel" IsVisible="False" />
-                                <pages:RegionSettingsPage x:Name="RegionSettingsPanel" IsVisible="False" />
+                                    <pages:StatusBarSettingsPage x:Name="StatusBarSettingsPanel" IsVisible="False" />
+                                    
+                                    <pages:WeatherSettingsPage x:Name="WeatherSettingsPanel" IsVisible="False" />
+                                    <pages:RegionSettingsPage x:Name="RegionSettingsPanel" IsVisible="False" />
 
-                                <pages:UpdateSettingsPage x:Name="UpdateSettingsPanel" IsVisible="False" />
+                                    <pages:UpdateSettingsPage x:Name="UpdateSettingsPanel" IsVisible="False" />
 
-                                <pages:LauncherSettingsPage x:Name="LauncherSettingsPanel" IsVisible="False" />
-                                <pages:AboutSettingsPage x:Name="AboutSettingsPanel" IsVisible="False" />
-                                <pages:PluginSettingsPage x:Name="PluginSettingsPanel" IsVisible="False" />
+                                    <pages:LauncherSettingsPage x:Name="LauncherSettingsPanel" IsVisible="False" />
+                                    <pages:AboutSettingsPage x:Name="AboutSettingsPanel" IsVisible="False" />
+                                    <pages:PluginSettingsPage x:Name="PluginSettingsPanel" IsVisible="False" />
+                                    <pages:PluginMarketSettingsPage x:Name="PluginMarketSettingsPanel" IsVisible="False" />
+                                </Grid>
+                            </ScrollViewer>
+                        </ui:NavigationView>
+
+                        <Border x:Name="PendingRestartDock"
+                                Grid.Row="1"
+                                IsVisible="False"
+                                Classes="glass-panel"
+                                CornerRadius="18"
+                                Padding="14,12">
+                            <Grid ColumnDefinitions="Auto,*,Auto"
+                                  ColumnSpacing="12">
+                                <Border Width="34"
+                                        Height="34"
+                                        CornerRadius="17"
+                                        Background="{DynamicResource AdaptiveAccentBrush}">
+                                    <fi:FluentIcon Icon="ArrowSync"
+                                                   IconVariant="Regular"
+                                                   FontSize="16"
+                                                   Foreground="White"
+                                                   HorizontalAlignment="Center"
+                                                   VerticalAlignment="Center" />
+                                </Border>
+                                <StackPanel Grid.Column="1"
+                                            Spacing="2"
+                                            VerticalAlignment="Center">
+                                    <TextBlock x:Name="PendingRestartDockTitleTextBlock"
+                                               FontSize="13"
+                                               FontWeight="SemiBold"
+                                               Text="Restart required" />
+                                    <TextBlock x:Name="PendingRestartDockDescriptionTextBlock"
+                                               TextWrapping="Wrap"
+                                               Foreground="{DynamicResource AdaptiveTextSecondaryBrush}"
+                                               Text="Your changes will apply after restarting the app." />
+                                </StackPanel>
+                                <Button x:Name="PendingRestartDockButton"
+                                        Grid.Column="2"
+                                        Padding="14,8"
+                                        Click="OnPendingRestartDockButtonClick">
+                                    <StackPanel Orientation="Horizontal" Spacing="8">
+                                        <fi:FluentIcon Icon="ArrowSync"
+                                                       IconVariant="Regular" />
+                                        <TextBlock x:Name="PendingRestartDockButtonTextBlock"
+                                                   VerticalAlignment="Center"
+                                                   Text="Restart app" />
+                                    </StackPanel>
+                                </Button>
                             </Grid>
-                        </ScrollViewer>
-                    </ui:NavigationView>
+                        </Border>
+                    </Grid>
                 </Border>
             </Border>
         </Grid>

LanMountainDesktop/Views/MainWindow.axaml.cs

@@ -19,7 +19,6 @@ using Avalonia.Styling;
 using Avalonia.Threading;
 using FluentAvalonia.Styling;
 using LanMountainDesktop.ComponentSystem;
-using LanMountainDesktop.ComponentSystem.Extensions;
 using LanMountainDesktop.Models;
 using LanMountainDesktop.Services;
 using LanMountainDesktop.Theme;
@@ -98,11 +97,7 @@ public partial class MainWindow : Window
     private readonly IWeatherDataService _weatherDataService = new XiaomiWeatherService();
     private readonly IRecommendationInfoService _recommendationInfoService = new RecommendationDataService();
     private readonly ICalculatorDataService _calculatorDataService = new CalculatorDataService();
-    private readonly ComponentRegistry _componentRegistry = ComponentRegistry
-        .CreateDefault()
-        .RegisterExtensions(
-            JsonComponentExtensionProvider.LoadProvidersFromDirectory(
-                Path.Combine(AppContext.BaseDirectory, "Extensions", "Components")));
+    private readonly ComponentRegistry _componentRegistry;
     private readonly DesktopComponentRuntimeRegistry _componentRuntimeRegistry;
     private readonly FluentAvaloniaTheme? _fluentAvaloniaTheme;
     private readonly HashSet<string> _topStatusComponentIds = new(StringComparer.OrdinalIgnoreCase);
@@ -172,6 +167,9 @@ public partial class MainWindow : Window
     private bool _weatherNoTlsRequests;
     private bool _autoStartWithWindows;
     private bool _suppressAutoStartToggleEvents;
+    private bool _suppressAppRenderModeSelectionEvents;
+    private string _selectedAppRenderMode = AppRenderingModeHelper.Default;
+    private string _runningAppRenderMode = AppRenderingModeHelper.Default;
     private string _weatherSearchKeyword = string.Empty;
     private bool _isWeatherSearchInProgress;
     private bool _isWeatherPreviewInProgress;
@@ -182,11 +180,18 @@ public partial class MainWindow : Window
 
     public MainWindow()
     {
+        var pluginRuntimeService = (Application.Current as App)?.PluginRuntimeService;
+        _componentRegistry = DesktopComponentRegistryFactory.Create(pluginRuntimeService);
+
         InitializeComponent();
-        _componentRuntimeRegistry = DesktopComponentRuntimeRegistry.CreateDefault(_componentRegistry);
+        InitializePluginSettingsNavigation();
+        _componentRuntimeRegistry = DesktopComponentRegistryFactory.CreateRuntimeRegistry(
+            _componentRegistry,
+            pluginRuntimeService);
         _fluentAvaloniaTheme = Application.Current?.Styles.OfType<FluentAvaloniaTheme>().FirstOrDefault();
         AppSettingsService.SettingsSaved += OnExternalAppSettingsSaved;
         LauncherSettingsService.SettingsSaved += OnExternalLauncherSettingsSaved;
+        PendingRestartStateService.StateChanged += OnPendingRestartStateChanged;
         PropertyChanged += OnWindowPropertyChanged;
         InitializeDesktopSurfaceSwipeHandlers();
         InitializeDesktopComponentDragHandlers();
@@ -200,8 +205,7 @@ public partial class MainWindow : Window
         GridEdgeInsetSlider.ValueChanged += OnGridEdgeInsetSliderChanged;
         ApplyGridButton.Click += OnApplyGridSizeClick;
 
-        NightModeToggleSwitch.Checked += OnNightModeChecked;
-        NightModeToggleSwitch.Unchecked += OnNightModeUnchecked;
+        NightModeToggleSwitch.IsCheckedChanged += OnNightModeIsCheckedChanged;
         RecommendedColorButton1.Click += OnRecommendedColorClick;
         RecommendedColorButton2.Click += OnRecommendedColorClick;
         RecommendedColorButton3.Click += OnRecommendedColorClick;
@@ -216,37 +220,65 @@ public partial class MainWindow : Window
         MonetColorButton5.Click += OnMonetColorClick;
         MonetColorButton6.Click += OnMonetColorClick;
 
-        StatusBarClockToggleSwitch.Checked += OnStatusBarClockChecked;
-        StatusBarClockToggleSwitch.Unchecked += OnStatusBarClockUnchecked;
-        ClockFormatHMSSRadio.Checked += OnClockFormatChanged;
-        ClockFormatHMRadio.Checked += OnClockFormatChanged;
+        StatusBarClockToggleSwitch.IsCheckedChanged += OnStatusBarClockIsCheckedChanged;
+        ClockFormatHMSSRadio.IsCheckedChanged += OnClockFormatChanged;
+        ClockFormatHMRadio.IsCheckedChanged += OnClockFormatChanged;
         StatusBarSpacingModeComboBox.SelectionChanged += OnStatusBarSpacingModeChanged;
         StatusBarSpacingSlider.ValueChanged += OnStatusBarSpacingSliderChanged;
 
         WeatherPreviewButton.Click += OnTestWeatherRequestClick;
         WeatherLocationModeComboBox.SelectionChanged += OnWeatherLocationModeSelectionChanged;
         WeatherLocationModeChipListBox.SelectionChanged += OnWeatherLocationModeChipSelectionChanged;
-        WeatherAutoRefreshToggleSwitch.Checked += OnWeatherAutoRefreshToggled;
-        WeatherAutoRefreshToggleSwitch.Unchecked += OnWeatherAutoRefreshToggled;
+        WeatherAutoRefreshToggleSwitch.IsCheckedChanged += OnWeatherAutoRefreshToggled;
         WeatherSearchButton.Click += OnSearchWeatherCityClick;
         WeatherApplyCityButton.Click += OnApplyWeatherCitySelectionClick;
         WeatherApplyCoordinatesButton.Click += OnApplyWeatherCoordinatesClick;
         WeatherExcludedAlertsTextBox.LostFocus += OnWeatherExcludedAlertsLostFocus;
         WeatherIconPackComboBox.SelectionChanged += OnWeatherIconPackSelectionChanged;
-        WeatherNoTlsToggleSwitch.Checked += OnWeatherNoTlsToggled;
-        WeatherNoTlsToggleSwitch.Unchecked += OnWeatherNoTlsToggled;
+        WeatherNoTlsToggleSwitch.IsCheckedChanged += OnWeatherNoTlsToggled;
 
         LanguageComboBox.SelectionChanged += OnLanguageSelectionChanged;
         TimeZoneComboBox.SelectionChanged += OnTimeZoneSelectionChanged;
 
-        AutoCheckUpdatesToggleSwitch.Checked += OnAutoCheckUpdatesToggled;
-        AutoCheckUpdatesToggleSwitch.Unchecked += OnAutoCheckUpdatesToggled;
+        AutoCheckUpdatesToggleSwitch.IsCheckedChanged += OnAutoCheckUpdatesToggled;
         UpdateChannelChipListBox.SelectionChanged += OnUpdateChannelSelectionChanged;
         CheckForUpdatesButton.Click += OnCheckForUpdatesClick;
         DownloadAndInstallUpdateButton.Click += OnDownloadAndInstallUpdateClick;
 
-        AutoStartWithWindowsToggleSwitch.Checked += OnAutoStartWithWindowsToggled;
-        AutoStartWithWindowsToggleSwitch.Unchecked += OnAutoStartWithWindowsToggled;
+        AutoStartWithWindowsToggleSwitch.IsCheckedChanged += OnAutoStartWithWindowsToggled;
+        AppRenderModeComboBox.SelectionChanged += OnAppRenderModeSelectionChanged;
+    }
+
+    private void OnNightModeIsCheckedChanged(object? sender, RoutedEventArgs e)
+    {
+        if (sender is not ToggleButton toggleButton)
+        {
+            return;
+        }
+
+        if (toggleButton.IsChecked == true)
+        {
+            OnNightModeChecked(sender, e);
+            return;
+        }
+
+        OnNightModeUnchecked(sender, e);
+    }
+
+    private void OnStatusBarClockIsCheckedChanged(object? sender, RoutedEventArgs e)
+    {
+        if (sender is not ToggleButton toggleButton)
+        {
+            return;
+        }
+
+        if (toggleButton.IsChecked == true)
+        {
+            OnStatusBarClockChecked(sender, e);
+            return;
+        }
+
+        OnStatusBarClockUnchecked(sender, e);
     }
 
     protected override void OnOpened(EventArgs e)
@@ -300,10 +332,7 @@ public partial class MainWindow : Window
         GridSizeSlider.ValueChanged += OnGridSizeSliderChanged;
         GridSizeNumberBox.ValueChanged += OnGridSizeNumberBoxChanged;
 
-        if (SettingsNavView.MenuItems.ElementAtOrDefault(Math.Clamp(snapshot.SettingsTabIndex, 0, 9)) is FluentAvalonia.UI.Controls.NavigationViewItem navItem)
-        {
-            SettingsNavView.SelectedItem = navItem;
-        }
+        RestoreSettingsTabSelection(snapshot);
         UpdateSettingsTabContent();
 
         WallpaperPlacementComboBox.SelectedIndex = GetPlacementIndexFromSetting(snapshot.WallpaperPlacement);
@@ -313,6 +342,7 @@ public partial class MainWindow : Window
         InitializeWeatherSettings(snapshot);
         _ = _componentSettingsService.Load();
         InitializeAutoStartWithWindowsSetting(snapshot);
+        InitializeAppRenderModeSetting(snapshot);
         InitializeUpdateSettings(snapshot);
         InitializeDesktopSurfaceState(desktopLayoutSnapshot);
         InitializeLauncherVisibilitySettings(launcherSnapshot);
@@ -378,6 +408,7 @@ public partial class MainWindow : Window
         _wallpaperBitmap = null;
         AppSettingsService.SettingsSaved -= OnExternalAppSettingsSaved;
         LauncherSettingsService.SettingsSaved -= OnExternalLauncherSettingsSaved;
+        PendingRestartStateService.StateChanged -= OnPendingRestartStateChanged;
         PropertyChanged -= OnWindowPropertyChanged;
         DesktopHost.SizeChanged -= OnDesktopHostSizeChanged;
         WallpaperPreviewHost.SizeChanged -= OnWallpaperPreviewHostSizeChanged;
@@ -782,6 +813,11 @@ public partial class MainWindow : Window
             return;
         }
 
+        if (radioButton.IsChecked != true)
+        {
+            return;
+        }
+
         _clockDisplayFormat = formatTag == "Hm" 
             ? ClockDisplayFormat.HourMinute 
             : ClockDisplayFormat.HourMinuteSecond;

LanMountainDesktop/Views/SettingsPages/AboutSettingsPage.axaml

@@ -34,5 +34,46 @@
                 </ui:SettingsExpander.Footer>
             </ui:SettingsExpander>
         </Border>
+
+        <Border Classes="settings-expander-shell">
+            <ui:SettingsExpander x:Name="AboutRenderModeSettingsExpander"
+                                 Header="Rendering Mode"
+                                 Description="Choose the rendering backend. Restart the app after changing this option. Unsupported modes fall back to software."
+                                 IsExpanded="True">
+                <ui:SettingsExpander.IconSource>
+                    <fi:SymbolIconSource Symbol="Window" />
+                </ui:SettingsExpander.IconSource>
+                <StackPanel Spacing="4"
+                            Margin="0,4,0,0">
+                    <TextBlock x:Name="CurrentRenderBackendLabelTextBlock"
+                               Text="Current actual backend"
+                               FontSize="12"
+                               FontWeight="SemiBold"
+                               Foreground="{DynamicResource AdaptiveTextPrimaryBrush}" />
+                    <TextBlock x:Name="CurrentRenderBackendValueTextBlock"
+                               Text="Current backend: Software"
+                               FontSize="13"
+                               TextWrapping="Wrap"
+                               Foreground="{DynamicResource AdaptiveTextPrimaryBrush}" />
+                    <TextBlock x:Name="CurrentRenderBackendImplementationTextBlock"
+                               Text="Runtime implementation is unavailable."
+                               FontSize="12"
+                               TextWrapping="Wrap"
+                               Foreground="{DynamicResource AdaptiveTextSecondaryBrush}" />
+                </StackPanel>
+                <ui:SettingsExpander.Footer>
+                    <ComboBox x:Name="AppRenderModeComboBox"
+                              MinWidth="180"
+                              SelectedIndex="0"
+                              HorizontalAlignment="Right">
+                        <ComboBoxItem Content="Default" Tag="Default" />
+                        <ComboBoxItem Content="Software" Tag="Software" />
+                        <ComboBoxItem Content="angleEgl" Tag="AngleEgl" />
+                        <ComboBoxItem Content="WGL" Tag="Wgl" />
+                        <ComboBoxItem Content="Vulkan" Tag="Vulkan" />
+                    </ComboBox>
+                </ui:SettingsExpander.Footer>
+            </ui:SettingsExpander>
+        </Border>
     </StackPanel>
 </UserControl>

LanMountainDesktop/Views/SettingsPages/LauncherSettingsPage.axaml

@@ -31,12 +31,6 @@
                                    IsVisible="False"
                                    Foreground="{DynamicResource AdaptiveTextSecondaryBrush}"
                                    Text="No hidden items." />
-                        <ScrollViewer MaxHeight="420"
-                                      VerticalScrollBarVisibility="Auto"
-                                      HorizontalScrollBarVisibility="Disabled">
-                            <StackPanel x:Name="LauncherHiddenItemsListPanel"
-                                        Spacing="8" />
-                        </ScrollViewer>
                     </StackPanel>
                 </ui:SettingsExpander.Footer>
             </ui:SettingsExpander>

LanMountainDesktop/Views/SettingsPages/PluginSettingsPage.axaml

@@ -1,43 +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"
-             xmlns:ui="using:FluentAvalonia.UI.Controls"
-             xmlns:fi="using:FluentIcons.Avalonia.Fluent"
-             mc:Ignorable="d" d:DesignWidth="800" d:DesignHeight="1000"
-             x:Class="LanMountainDesktop.Views.SettingsPages.PluginSettingsPage">
-
-    <StackPanel x:Name="PluginSettingsPanel" Spacing="16">
-        <TextBlock x:Name="PluginSettingsPanelTitleTextBlock"
-                   FontSize="24"
-                   FontWeight="SemiBold"
-                   Foreground="{DynamicResource AdaptiveTextPrimaryBrush}"
-                   Text="Plugins" />
-
-        <Border Classes="settings-expander-shell">
-            <ui:SettingsExpander x:Name="PluginSystemSettingsExpander"
-                                 Header="Plugin Runtime"
-                                 Description="Manage plugin loading and backend isolation."
-                                 IsExpanded="True">
-                <ui:SettingsExpander.IconSource>
-                    <ui:FontIconSource Glyph="&#xe734;" FontFamily="{StaticResource SymbolThemeFontFamily}" />
-                </ui:SettingsExpander.IconSource>
-                <ui:SettingsExpander.Footer>
-                    <StackPanel Spacing="10">
-                        <TextBlock x:Name="PluginSystemDescriptionTextBlock"
-                                   Foreground="{DynamicResource AdaptiveTextSecondaryBrush}"
-                                   Text="This page will host installed plugin management, permission review, and sandboxed backend runtime controls." />
-                        <Border Background="{DynamicResource AdaptiveSurfaceRaisedBrush}"
-                                CornerRadius="{DynamicResource DesignCornerRadiusSm}"
-                                Padding="14">
-                            <TextBlock x:Name="PluginSystemStatusTextBlock"
-                                       Foreground="{DynamicResource AdaptiveTextSecondaryBrush}"
-                                       TextWrapping="Wrap"
-                                       Text="Plugin management UI is not connected yet. Next step is wiring the loader, permissions, and worker isolation state into this panel." />
-                        </Border>
-                    </StackPanel>
-                </ui:SettingsExpander.Footer>
-            </ui:SettingsExpander>
-        </Border>
-    </StackPanel>
-</UserControl>

LanMountainDesktop/Views/SettingsPages/PluginSettingsPage.axaml.cs

@@ -1,12 +0,0 @@
-using Avalonia.Controls;
-using Avalonia.Markup.Xaml;
-
-namespace LanMountainDesktop.Views.SettingsPages;
-
-public partial class PluginSettingsPage : UserControl
-{
-    public PluginSettingsPage()
-    {
-        InitializeComponent();
-    }
-}

LanMountainDesktop/Views/SettingsPages/WeatherSettingsPage.axaml

@@ -4,91 +4,116 @@
              xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
              xmlns:ui="using:FluentAvalonia.UI.Controls"
              xmlns:fi="using:FluentIcons.Avalonia.Fluent"
-             mc:Ignorable="d" d:DesignWidth="800" d:DesignHeight="1200"
+             mc:Ignorable="d" d:DesignWidth="860" d:DesignHeight="1200"
              x:Class="LanMountainDesktop.Views.SettingsPages.WeatherSettingsPage">
 
+    <UserControl.Styles>
+        <Style Selector="StackPanel.weather-settings-root TextBlock.section-eyebrow">
+            <Setter Property="FontSize" Value="13" />
+            <Setter Property="FontWeight" Value="SemiBold" />
+            <Setter Property="Foreground" Value="{DynamicResource AdaptiveTextSecondaryBrush}" />
+        </Style>
+
+        <Style Selector="StackPanel.weather-settings-root Border.preview-icon-shell">
+            <Setter Property="Width" Value="62" />
+            <Setter Property="Height" Value="62" />
+            <Setter Property="CornerRadius" Value="18" />
+            <Setter Property="Background" Value="{DynamicResource AdaptiveSurfaceRaisedBrush}" />
+            <Setter Property="BorderThickness" Value="1" />
+            <Setter Property="BorderBrush" Value="{DynamicResource AdaptiveButtonBorderBrush}" />
+            <Setter Property="Padding" Value="10" />
+        </Style>
+
+        <Style Selector="StackPanel.weather-settings-root Border.settings-note-shell">
+            <Setter Property="Background" Value="{DynamicResource AdaptiveSurfaceRaisedBrush}" />
+            <Setter Property="CornerRadius" Value="{DynamicResource DesignCornerRadiusSm}" />
+            <Setter Property="Padding" Value="14,12" />
+        </Style>
+
+        <Style Selector="StackPanel.weather-settings-root Border.settings-expander-shell">
+            <Setter Property="Margin" Value="0" />
+        </Style>
+    </UserControl.Styles>
+
     <StackPanel x:Name="WeatherSettingsContentPanel"
+                Classes="settings-animated-intro weather-settings-root"
                 Margin="0,0,8,0"
-                Spacing="16">
+                Spacing="12">
         <TextBlock x:Name="WeatherPanelTitleTextBlock"
-                   FontSize="24"
+                   FontSize="28"
                    FontWeight="SemiBold"
                    Foreground="{DynamicResource AdaptiveTextPrimaryBrush}"
                    Text="Weather" />
 
-        <!-- Weather Preview Card -->
-        <Border Classes="settings-expander-shell">
-            <ui:SettingsExpander x:Name="WeatherPreviewSettingsExpander"
-                                 Header="Weather Preview"
-                                 Description="Refresh and verify current weather service status."
-                                 IsExpanded="True">
-                <ui:SettingsExpander.IconSource>
-                    <fi:SymbolIconSource Symbol="WeatherSunny" />
-                </ui:SettingsExpander.IconSource>
-                <ui:SettingsExpander.Footer>
-                    <StackPanel Orientation="Horizontal" Spacing="8">
-                        <Button x:Name="WeatherPreviewButton"
-                                Padding="12,8"
-                                Content="Refresh" />
-                        <ui:ProgressRing x:Name="WeatherPreviewProgressRing"
-                                         Width="20"
-                                         Height="20"
-                                         IsActive="True"
-                                         IsVisible="False" />
-                    </StackPanel>
-                </ui:SettingsExpander.Footer>
-                
-                <ui:SettingsExpanderItem>
-                    <Grid ColumnDefinitions="Auto,*" ColumnSpacing="12">
-                        <Border Width="44"
-                                Height="44"
-                                CornerRadius="{DynamicResource DesignCornerRadiusXs}"
-                                BorderThickness="1"
-                                BorderBrush="{DynamicResource AdaptiveButtonBorderBrush}"
-                                Background="{DynamicResource AdaptiveButtonBackgroundBrush}">
-                            <fi:SymbolIcon x:Name="WeatherPreviewIconSymbol"
-                                           Symbol="WeatherSunny"
-                                           IconVariant="Regular"
-                                           FontSize="22"
-                                           HorizontalAlignment="Center"
-                                           VerticalAlignment="Center" />
+        <StackPanel Spacing="8">
+            <TextBlock x:Name="WeatherPreviewSectionTextBlock"
+                       Classes="section-eyebrow"
+                       Text="Weather Preview" />
+
+            <Border Classes="settings-expander-shell"
+                    Padding="18,16">
+                <Grid RowDefinitions="Auto,Auto"
+                      RowSpacing="10">
+                    <Grid ColumnDefinitions="Auto,*,Auto"
+                          ColumnSpacing="14">
+                        <Border Classes="preview-icon-shell">
+                            <Image x:Name="WeatherPreviewIconImage"
+                                   Stretch="Uniform" />
                         </Border>
+
                         <StackPanel Grid.Column="1"
                                     VerticalAlignment="Center"
-                                    Spacing="2">
+                                    Spacing="3">
                             <TextBlock x:Name="WeatherPreviewTemperatureTextBlock"
-                                       FontSize="22"
+                                       FontSize="34"
                                        FontWeight="SemiBold"
-                                       Text="--°" />
+                                       Text="--" />
                             <TextBlock x:Name="WeatherPreviewUpdatedTextBlock"
-                                       FontSize="12"
+                                       FontSize="13"
                                        Foreground="{DynamicResource AdaptiveTextSecondaryBrush}"
                                        Text="-" />
                         </StackPanel>
+
+                        <StackPanel Grid.Column="2"
+                                    Orientation="Horizontal"
+                                    Spacing="8"
+                                    VerticalAlignment="Center">
+                            <Button x:Name="WeatherPreviewButton"
+                                    Padding="16,8"
+                                    Content="Refresh" />
+                            <ui:ProgressRing x:Name="WeatherPreviewProgressRing"
+                                             Width="20"
+                                             Height="20"
+                                             IsActive="True"
+                                             IsVisible="False" />
+                        </StackPanel>
                     </Grid>
-                </ui:SettingsExpanderItem>
 
-                <ui:SettingsExpanderItem>
                     <TextBlock x:Name="WeatherPreviewResultTextBlock"
-                               Foreground="{DynamicResource AdaptiveTextSecondaryBrush}"
+                               Grid.Row="1"
                                TextWrapping="Wrap"
+                               Foreground="{DynamicResource AdaptiveTextSecondaryBrush}"
                                Text="Use refresh to verify your weather configuration." />
-                </ui:SettingsExpanderItem>
-            </ui:SettingsExpander>
-        </Border>
+                </Grid>
+            </Border>
+        </StackPanel>
+
+        <Border Background="{DynamicResource SurfaceStrokeColorDefaultBrush}"
+                Height="1" />
+
+        <TextBlock x:Name="WeatherSettingsSectionTextBlock"
+                   Classes="section-eyebrow"
+                   Text="Settings" />
 
-        <!-- Location Source Card -->
         <Border Classes="settings-expander-shell">
             <ui:SettingsExpander x:Name="WeatherLocationSettingsExpander"
                                  Header="Location Source"
                                  Description="Choose how weather widgets resolve location."
                                  IsExpanded="True">
-                <ui:SettingsExpander.IconSource>
-                    <fi:SymbolIconSource Symbol="Location" />
-                </ui:SettingsExpander.IconSource>
                 <ui:SettingsExpander.Footer>
                     <ListBox x:Name="WeatherLocationModeChipListBox"
                              Classes="settings-chip-list"
+                             HorizontalAlignment="Right"
                              SelectionMode="Single">
                         <ListBox.ItemsPanel>
                             <ItemsPanelTemplate>
@@ -104,6 +129,39 @@
                     </ListBox>
                 </ui:SettingsExpander.Footer>
 
+                <ui:SettingsExpanderItem>
+                    <Grid ColumnDefinitions="*,Auto"
+                          ColumnSpacing="18">
+                        <StackPanel Spacing="4">
+                            <TextBlock x:Name="WeatherLocationSelectionTitleTextBlock"
+                                       FontSize="17"
+                                       FontWeight="SemiBold"
+                                       Text="City Selection" />
+                            <TextBlock x:Name="WeatherLocationSelectionDescriptionTextBlock"
+                                       Foreground="{DynamicResource AdaptiveTextSecondaryBrush}"
+                                       TextWrapping="Wrap"
+                                       Text="Select the current city used for weather queries." />
+                        </StackPanel>
+
+                        <StackPanel Grid.Column="1"
+                                    MaxWidth="420"
+                                    HorizontalAlignment="Right"
+                                    Spacing="4">
+                            <TextBlock x:Name="WeatherLocationValueTextBlock"
+                                       FontSize="17"
+                                       FontWeight="SemiBold"
+                                       TextAlignment="Right"
+                                       TextWrapping="Wrap"
+                                       Text="No location selected" />
+                            <TextBlock x:Name="WeatherLocationStatusTextBlock"
+                                       FontSize="12"
+                                       TextAlignment="Right"
+                                       TextWrapping="Wrap"
+                                       Foreground="{DynamicResource AdaptiveTextSecondaryBrush}" />
+                        </StackPanel>
+                    </Grid>
+                </ui:SettingsExpanderItem>
+
                 <ui:SettingsExpanderItem>
                     <ui:SettingsExpanderItem.Footer>
                         <ToggleSwitch x:Name="WeatherAutoRefreshToggleSwitch"
@@ -111,16 +169,18 @@
                     </ui:SettingsExpanderItem.Footer>
                 </ui:SettingsExpanderItem>
 
-                <!-- ComboBox hidden as in original -->
                 <ComboBox x:Name="WeatherLocationModeComboBox"
                           IsVisible="False">
-                    <ComboBoxItem x:Name="WeatherLocationModeCityItem" Tag="CitySearch" Content="City Search" />
-                    <ComboBoxItem x:Name="WeatherLocationModeCoordinatesItem" Tag="Coordinates" Content="Coordinates" />
+                    <ComboBoxItem x:Name="WeatherLocationModeCityItem"
+                                  Tag="CitySearch"
+                                  Content="City Search" />
+                    <ComboBoxItem x:Name="WeatherLocationModeCoordinatesItem"
+                                  Tag="Coordinates"
+                                  Content="Coordinates" />
                 </ComboBox>
             </ui:SettingsExpander>
         </Border>
 
-        <!-- City Search Card -->
         <Border Classes="settings-expander-shell">
             <ui:SettingsExpander x:Name="WeatherCitySearchSettingsExpander"
                                  Header="City Search"
@@ -128,38 +188,42 @@
                                  IsExpanded="True">
                 <ui:SettingsExpander.Footer>
                     <Button x:Name="WeatherApplyCityButton"
-                            Padding="12,8"
+                            Padding="14,8"
                             Content="Apply City" />
                 </ui:SettingsExpander.Footer>
 
-                <ui:SettingsExpanderItem Content="Advanced Filters">
-                    <StackPanel Spacing="10">
-                        <Grid ColumnDefinitions="*,Auto,Auto" ColumnSpacing="8">
+                <ui:SettingsExpanderItem>
+                    <StackPanel Spacing="12">
+                        <Grid ColumnDefinitions="*,Auto,Auto"
+                              ColumnSpacing="10">
                             <TextBox x:Name="WeatherCitySearchTextBox"
                                      Watermark="e.g. Beijing" />
                             <ui:ProgressRing x:Name="WeatherSearchProgressRing"
                                              Grid.Column="1"
-                                             Width="24"
-                                             Height="24"
+                                             Width="22"
+                                             Height="22"
                                              IsActive="True"
                                              IsVisible="False" />
                             <Button x:Name="WeatherSearchButton"
                                     Grid.Column="2"
-                                    Padding="12,8"
+                                    Padding="14,8"
                                     Content="Search" />
                         </Grid>
+
                         <ComboBox x:Name="WeatherCityResultsComboBox"
-                                  Width="320" />
+                                  HorizontalAlignment="Stretch"
+                                  MinWidth="320" />
+
                         <TextBlock x:Name="WeatherSearchStatusTextBlock"
                                    FontSize="12"
                                    Foreground="{DynamicResource AdaptiveTextSecondaryBrush}"
+                                   TextWrapping="Wrap"
                                    Text="Search by city name and apply one location." />
                     </StackPanel>
                 </ui:SettingsExpanderItem>
             </ui:SettingsExpander>
         </Border>
 
-        <!-- Coordinates Card -->
         <Border Classes="settings-expander-shell">
             <ui:SettingsExpander x:Name="WeatherCoordinateSettingsExpander"
                                  Header="Coordinates"
@@ -168,13 +232,14 @@
                                  IsExpanded="True">
                 <ui:SettingsExpander.Footer>
                     <Button x:Name="WeatherApplyCoordinatesButton"
-                            Padding="12,8"
+                            Padding="14,8"
                             Content="Apply Coordinates" />
                 </ui:SettingsExpander.Footer>
 
                 <ui:SettingsExpanderItem>
                     <StackPanel Spacing="12">
-                        <Grid ColumnDefinitions="*,*" ColumnSpacing="10">
+                        <Grid ColumnDefinitions="*,*"
+                              ColumnSpacing="10">
                             <ui:NumberBox x:Name="WeatherLatitudeNumberBox"
                                           Grid.Column="0"
                                           Header="Latitude"
@@ -194,65 +259,96 @@
                                           LargeChange="1"
                                           Value="116.4074" />
                         </Grid>
+
                         <TextBox x:Name="WeatherLocationKeyTextBox"
                                  Watermark="Location key (optional)" />
                         <TextBox x:Name="WeatherLocationNameTextBox"
                                  Watermark="Display name (optional)" />
                         <TextBlock x:Name="WeatherCoordinateStatusTextBlock"
                                    FontSize="12"
-                                   Foreground="{DynamicResource AdaptiveTextSecondaryBrush}" />
+                                   Foreground="{DynamicResource AdaptiveTextSecondaryBrush}"
+                                   TextWrapping="Wrap" />
                     </StackPanel>
                 </ui:SettingsExpanderItem>
             </ui:SettingsExpander>
         </Border>
 
-        <!-- Excluded Alerts Card -->
         <Border Classes="settings-expander-shell">
             <ui:SettingsExpander x:Name="WeatherAlertFilterSettingsExpander"
                                  Header="Excluded Alerts"
                                  Description="Alerts containing these words will not be shown. One rule per line."
                                  IsExpanded="True">
                 <ui:SettingsExpanderItem>
-                    <TextBox x:Name="WeatherExcludedAlertsTextBox"
-                             MinHeight="96"
-                             MaxHeight="220"
-                             Width="360"
-                             TextWrapping="Wrap"
-                             AcceptsReturn="True" />
+                    <Grid ColumnDefinitions="Auto,*"
+                          ColumnSpacing="20">
+                        <StackPanel Width="220"
+                                    Spacing="4">
+                            <TextBlock x:Name="WeatherAlertListTitleTextBlock"
+                                       FontSize="17"
+                                       FontWeight="SemiBold"
+                                       Text="Exclude List" />
+                            <TextBlock x:Name="WeatherAlertListDescriptionTextBlock"
+                                       Foreground="{DynamicResource AdaptiveTextSecondaryBrush}"
+                                       TextWrapping="Wrap"
+                                       Text="One exclusion rule per line." />
+                        </StackPanel>
+
+                        <TextBox x:Name="WeatherExcludedAlertsTextBox"
+                                 Grid.Column="1"
+                                 MinHeight="96"
+                                 MaxHeight="220"
+                                 HorizontalAlignment="Stretch"
+                                 AcceptsReturn="True"
+                                 TextWrapping="Wrap"
+                                 Watermark="One keyword per line" />
+                    </Grid>
                 </ui:SettingsExpanderItem>
             </ui:SettingsExpander>
         </Border>
 
-        <!-- Weather Style Card -->
-        <Border Classes="settings-expander-shell">
-            <ui:SettingsExpander x:Name="WeatherIconPackSettingsExpander"
-                                 Header="Weather Icon Style"
-                                 Description="Choose Fluent Icon style for weather symbols."
-                                 IsExpanded="True">
-                <ui:SettingsExpander.Footer>
-                    <ComboBox x:Name="WeatherIconPackComboBox"
-                              Width="240">
-                        <ComboBoxItem x:Name="WeatherIconPackFluentRegularItem" Tag="FluentRegular" Content="Fluent Regular" />
-                        <ComboBoxItem x:Name="WeatherIconPackFluentFilledItem" Tag="FluentFilled" Content="Fluent Filled" />
-                    </ComboBox>
-                </ui:SettingsExpander.Footer>
-            </ui:SettingsExpander>
-        </Border>
-
-        <!-- No TLS Card -->
         <Border Classes="settings-expander-shell">
             <ui:SettingsExpander x:Name="WeatherNoTlsSettingsExpander"
                                  Header="No TLS Weather Request"
                                  Description="Not recommended. Enable only for incompatible network environments."
                                  IsExpanded="True">
                 <ui:SettingsExpander.Footer>
-                    <ToggleSwitch x:Name="WeatherNoTlsToggleSwitch" />
+                    <ToggleSwitch x:Name="WeatherNoTlsToggleSwitch"
+                                  Content="Allow non-TLS request fallback" />
                 </ui:SettingsExpander.Footer>
             </ui:SettingsExpander>
         </Border>
 
-        <TextBlock x:Name="WeatherLocationStatusTextBlock"
-                   Foreground="{DynamicResource AdaptiveTextSecondaryBrush}"
-                   Text="No city location is configured." />
+        <Border Classes="settings-note-shell">
+            <TextBlock x:Name="WeatherFooterHintTextBlock"
+                       TextWrapping="Wrap"
+                       Foreground="{DynamicResource AdaptiveTextSecondaryBrush}"
+                       Text="Desktop weather widgets will reuse the location and alert exclusion settings configured here." />
+        </Border>
+
+        <Grid IsVisible="False">
+            <ui:SettingsExpander x:Name="WeatherPreviewSettingsExpander"
+                                 Header="Weather Preview"
+                                 Description="Refresh and verify current weather service status." />
+            <fi:SymbolIcon x:Name="WeatherPreviewIconSymbol"
+                           Symbol="WeatherSunny"
+                           IconVariant="Regular" />
+            <Border Classes="settings-expander-shell">
+                <ui:SettingsExpander x:Name="WeatherIconPackSettingsExpander"
+                                     Header="Weather Icon Style"
+                                     Description="Choose Fluent Icon style for weather symbols.">
+                    <ui:SettingsExpander.Footer>
+                        <ComboBox x:Name="WeatherIconPackComboBox"
+                                  Width="220">
+                            <ComboBoxItem x:Name="WeatherIconPackFluentRegularItem"
+                                          Tag="FluentRegular"
+                                          Content="Fluent Regular" />
+                            <ComboBoxItem x:Name="WeatherIconPackFluentFilledItem"
+                                          Tag="FluentFilled"
+                                          Content="Fluent Filled" />
+                        </ComboBox>
+                    </ui:SettingsExpander.Footer>
+                </ui:SettingsExpander>
+            </Border>
+        </Grid>
     </StackPanel>
 </UserControl>

LanMountainDesktop/Views/SettingsWindow.Controls.cs

@@ -1,4 +1,4 @@
-using Avalonia.Controls;
+using Avalonia.Controls;
 using Avalonia.Media;
 using Avalonia.Media.Imaging;
 using LibVLCSharp.Avalonia;
@@ -126,6 +126,8 @@ public partial class SettingsWindow
 
     // --- WeatherSettingsPage ---
     internal TextBlock WeatherPanelTitleTextBlock => WeatherSettingsPanel.FindControl<TextBlock>("WeatherPanelTitleTextBlock")!;
+    internal TextBlock WeatherPreviewSectionTextBlock => WeatherSettingsPanel.FindControl<TextBlock>("WeatherPreviewSectionTextBlock")!;
+    internal TextBlock WeatherSettingsSectionTextBlock => WeatherSettingsPanel.FindControl<TextBlock>("WeatherSettingsSectionTextBlock")!;
     internal FluentAvalonia.UI.Controls.SettingsExpander WeatherPreviewSettingsExpander => WeatherSettingsPanel.FindControl<FluentAvalonia.UI.Controls.SettingsExpander>("WeatherPreviewSettingsExpander")!;
     internal FluentAvalonia.UI.Controls.SettingsExpander WeatherLocationSettingsExpander => WeatherSettingsPanel.FindControl<FluentAvalonia.UI.Controls.SettingsExpander>("WeatherLocationSettingsExpander")!;
     internal FluentAvalonia.UI.Controls.SettingsExpander WeatherCitySearchSettingsExpander => WeatherSettingsPanel.FindControl<FluentAvalonia.UI.Controls.SettingsExpander>("WeatherCitySearchSettingsExpander")!;
@@ -156,6 +158,7 @@ public partial class SettingsWindow
     internal FluentAvalonia.UI.Controls.NumberBox WeatherLongitudeNumberBox => WeatherSettingsPanel.FindControl<FluentAvalonia.UI.Controls.NumberBox>("WeatherLongitudeNumberBox")!;
     internal TextBlock WeatherCoordinateStatusTextBlock => WeatherSettingsPanel.FindControl<TextBlock>("WeatherCoordinateStatusTextBlock")!;
     internal TextBlock WeatherPreviewResultTextBlock => WeatherSettingsPanel.FindControl<TextBlock>("WeatherPreviewResultTextBlock")!;
+    internal Image WeatherPreviewIconImage => WeatherSettingsPanel.FindControl<Image>("WeatherPreviewIconImage")!;
     internal FluentIcons.Avalonia.Fluent.SymbolIcon WeatherPreviewIconSymbol => WeatherSettingsPanel.FindControl<FluentIcons.Avalonia.Fluent.SymbolIcon>("WeatherPreviewIconSymbol")!;
     internal TextBlock WeatherPreviewTemperatureTextBlock => WeatherSettingsPanel.FindControl<TextBlock>("WeatherPreviewTemperatureTextBlock")!;
     internal TextBlock WeatherPreviewUpdatedTextBlock => WeatherSettingsPanel.FindControl<TextBlock>("WeatherPreviewUpdatedTextBlock")!;
@@ -163,7 +166,13 @@ public partial class SettingsWindow
     internal FluentAvalonia.UI.Controls.ProgressRing WeatherPreviewProgressRing => WeatherSettingsPanel.FindControl<FluentAvalonia.UI.Controls.ProgressRing>("WeatherPreviewProgressRing")!;
     internal ComboBoxItem WeatherIconPackFluentRegularItem => WeatherSettingsPanel.FindControl<ComboBoxItem>("WeatherIconPackFluentRegularItem")!;
     internal ComboBoxItem WeatherIconPackFluentFilledItem => WeatherSettingsPanel.FindControl<ComboBoxItem>("WeatherIconPackFluentFilledItem")!;
+    internal TextBlock WeatherLocationSelectionTitleTextBlock => WeatherSettingsPanel.FindControl<TextBlock>("WeatherLocationSelectionTitleTextBlock")!;
+    internal TextBlock WeatherLocationSelectionDescriptionTextBlock => WeatherSettingsPanel.FindControl<TextBlock>("WeatherLocationSelectionDescriptionTextBlock")!;
+    internal TextBlock WeatherLocationValueTextBlock => WeatherSettingsPanel.FindControl<TextBlock>("WeatherLocationValueTextBlock")!;
     internal TextBlock WeatherLocationStatusTextBlock => WeatherSettingsPanel.FindControl<TextBlock>("WeatherLocationStatusTextBlock")!;
+    internal TextBlock WeatherAlertListTitleTextBlock => WeatherSettingsPanel.FindControl<TextBlock>("WeatherAlertListTitleTextBlock")!;
+    internal TextBlock WeatherAlertListDescriptionTextBlock => WeatherSettingsPanel.FindControl<TextBlock>("WeatherAlertListDescriptionTextBlock")!;
+    internal TextBlock WeatherFooterHintTextBlock => WeatherSettingsPanel.FindControl<TextBlock>("WeatherFooterHintTextBlock")!;
 
     // --- UpdateSettingsPage ---
     internal TextBlock UpdatePanelTitleTextBlock => UpdateSettingsPanel.FindControl<TextBlock>("UpdatePanelTitleTextBlock")!;
@@ -189,7 +198,12 @@ public partial class SettingsWindow
     // --- AboutSettingsPage ---
     internal TextBlock AboutPanelTitleTextBlock => AboutSettingsPanel.FindControl<TextBlock>("AboutPanelTitleTextBlock")!;
     internal FluentAvalonia.UI.Controls.SettingsExpander AboutStartupSettingsExpander => AboutSettingsPanel.FindControl<FluentAvalonia.UI.Controls.SettingsExpander>("AboutStartupSettingsExpander")!;
+    internal FluentAvalonia.UI.Controls.SettingsExpander AboutRenderModeSettingsExpander => AboutSettingsPanel.FindControl<FluentAvalonia.UI.Controls.SettingsExpander>("AboutRenderModeSettingsExpander")!;
     internal ToggleSwitch AutoStartWithWindowsToggleSwitch => AboutSettingsPanel.FindControl<ToggleSwitch>("AutoStartWithWindowsToggleSwitch")!;
+    internal ComboBox AppRenderModeComboBox => AboutSettingsPanel.FindControl<ComboBox>("AppRenderModeComboBox")!;
+    internal TextBlock CurrentRenderBackendLabelTextBlock => AboutSettingsPanel.FindControl<TextBlock>("CurrentRenderBackendLabelTextBlock")!;
+    internal TextBlock CurrentRenderBackendValueTextBlock => AboutSettingsPanel.FindControl<TextBlock>("CurrentRenderBackendValueTextBlock")!;
+    internal TextBlock CurrentRenderBackendImplementationTextBlock => AboutSettingsPanel.FindControl<TextBlock>("CurrentRenderBackendImplementationTextBlock")!;
     internal TextBlock VersionTextBlock => AboutSettingsPanel.FindControl<TextBlock>("VersionTextBlock")!;
     internal TextBlock CodeNameTextBlock => AboutSettingsPanel.FindControl<TextBlock>("CodeNameTextBlock")!;
     internal TextBlock FontInfoTextBlock => AboutSettingsPanel.FindControl<TextBlock>("FontInfoTextBlock")!;
@@ -197,13 +211,8 @@ public partial class SettingsWindow
     // --- LauncherSettingsPage ---
     internal TextBlock LauncherSettingsPanelTitleTextBlock => LauncherSettingsPanel.FindControl<TextBlock>("LauncherSettingsPanelTitleTextBlock")!;
     internal FluentAvalonia.UI.Controls.SettingsExpander LauncherHiddenItemsSettingsExpander => LauncherSettingsPanel.FindControl<FluentAvalonia.UI.Controls.SettingsExpander>("LauncherHiddenItemsSettingsExpander")!;
-    internal StackPanel LauncherHiddenItemsListPanel => LauncherSettingsPanel.FindControl<StackPanel>("LauncherHiddenItemsListPanel")!;
     internal TextBlock LauncherHiddenItemsEmptyTextBlock => LauncherSettingsPanel.FindControl<TextBlock>("LauncherHiddenItemsEmptyTextBlock")!;
     internal TextBlock LauncherHiddenItemsDescriptionTextBlock => LauncherSettingsPanel.FindControl<TextBlock>("LauncherHiddenItemsDescriptionTextBlock")!;
 
-    // --- PluginSettingsPage (Added for completeness) ---
-    internal TextBlock PluginSettingsPanelTitleTextBlock => PluginSettingsPanel.FindControl<TextBlock>("PluginSettingsPanelTitleTextBlock")!;
-    internal FluentAvalonia.UI.Controls.SettingsExpander PluginSystemSettingsExpander => PluginSettingsPanel.FindControl<FluentAvalonia.UI.Controls.SettingsExpander>("PluginSystemSettingsExpander")!;
-    internal TextBlock PluginSystemDescriptionTextBlock => PluginSettingsPanel.FindControl<TextBlock>("PluginSystemDescriptionTextBlock")!;
-    internal TextBlock PluginSystemStatusTextBlock => PluginSettingsPanel.FindControl<TextBlock>("PluginSystemStatusTextBlock")!;
 }
+

LanMountainDesktop/Views/SettingsWindow.Core.cs

@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Collections.Generic;
 using System.IO;
 using System.Linq;
@@ -12,6 +12,7 @@ using FluentIcons.Avalonia.Fluent;
 using FluentIcons.Common;
 using LanMountainDesktop.ComponentSystem;
 using LanMountainDesktop.Models;
+using LanMountainDesktop.Services;
 using LanMountainDesktop.Views.Components;
 
 namespace LanMountainDesktop.Views;
@@ -43,47 +44,181 @@ public partial class SettingsWindow
         }
 
         _launcherIconCache.Clear();
+        PendingRestartStateService.StateChanged -= OnPendingRestartStateChanged;
         base.OnClosed(e);
     }
 
-    private void OnSettingsNavSelectionChanged(object? sender, FluentAvalonia.UI.Controls.NavigationViewSelectionChangedEventArgs e)
+    private void InitializeSettingsNavigation()
     {
-        UpdateSettingsTabContent();
-        PersistSettings();
+        _settingsNavItems.Clear();
+        _pluginSettingsNavItems.Clear();
+
+        SettingsPrimaryNavHost.Children.Clear();
+        SettingsSecondaryNavHost.Children.Clear();
+        SettingsPluginNavHost.Children.Clear();
+        SettingsPluginNavSection.IsVisible = false;
+
+        AddSettingsNavItem(SettingsPrimaryNavHost, "Wallpaper", Symbol.Wallpaper, "Wallpaper");
+        AddSettingsNavItem(SettingsPrimaryNavHost, "Grid", Symbol.Grid, "Grid");
+        AddSettingsNavItem(SettingsPrimaryNavHost, "Color", Symbol.Color, "Color");
+        AddSettingsNavItem(SettingsPrimaryNavHost, "StatusBar", Symbol.Status, "Status Bar");
+        AddSettingsNavItem(SettingsPrimaryNavHost, "Weather", Symbol.WeatherSunny, "Weather");
+
+        AddSettingsNavItem(SettingsSecondaryNavHost, "Region", Symbol.Globe, "Region");
+        AddSettingsNavItem(SettingsSecondaryNavHost, "Launcher", Symbol.Apps, "App Launcher");
+        AddSettingsNavItem(SettingsSecondaryNavHost, "Update", Symbol.ArrowSync, "Update");
+        AddSettingsNavItem(SettingsSecondaryNavHost, "About", Symbol.Info, "About");
+        AddSettingsNavItem(SettingsSecondaryNavHost, "Plugins", Symbol.PuzzlePiece, "Plugins");
+        AddSettingsNavItem(SettingsSecondaryNavHost, "PluginMarket", Symbol.PuzzlePiece, "Plugin Market");
     }
 
-    private int GetSettingsTabIndex()
+    private void OnSettingsNavItemClick(object? sender, RoutedEventArgs e)
     {
-        if (SettingsNavView?.SelectedItem is FluentAvalonia.UI.Controls.NavigationViewItem item)
-        {
-            return item.Tag?.ToString() switch
-            {
-                "Wallpaper" => 0,
-                "Grid" => 1,
-                "Color" => 2,
-                "StatusBar" => 3,
-                "Weather" => 4,
-                "Region" => 5,
-                "Update" => 6,
-                "About" => 7,
-                "Launcher" => 8,
-                "Plugins" => 9,
-                _ => 0
-            };
-        }
-
-        return 0;
-    }
-
-    private void UpdateSettingsTabContent()
-    {
-        if (SettingsNavView is null)
+        if (sender is not Button button || button.Tag is not string tag)
         {
             return;
         }
 
-        var selectedItem = SettingsNavView.SelectedItem as FluentAvalonia.UI.Controls.NavigationViewItem;
-        var tag = selectedItem?.Tag?.ToString();
+        SelectSettingsTab(tag, persistSelection: true);
+    }
+
+    private Button AddSettingsNavItem(Panel host, string tag, Symbol symbol, string title)
+    {
+        var button = CreateSettingsNavItem(tag, symbol, title);
+        host.Children.Add(button);
+        _settingsNavItems[tag] = button;
+        return button;
+    }
+
+    private Button CreateSettingsNavItem(string tag, Symbol symbol, string title)
+    {
+        var icon = new SymbolIcon
+        {
+            Symbol = symbol,
+            IconVariant = IconVariant.Regular
+        };
+        icon.Classes.Add("settings-nav-icon");
+
+        var iconShell = new Border
+        {
+            Child = icon,
+            Classes = { "settings-sidebar-icon-shell" }
+        };
+
+        var label = new TextBlock
+        {
+            Text = title,
+            Classes = { "settings-nav-label" }
+        };
+
+        var contentGrid = new Grid
+        {
+            ColumnDefinitions = new ColumnDefinitions("Auto,*"),
+            ColumnSpacing = 12
+        };
+        contentGrid.Children.Add(iconShell);
+        contentGrid.Children.Add(label);
+        Grid.SetColumn(label, 1);
+
+        var button = new Button
+        {
+            Tag = tag,
+            Content = contentGrid,
+            Classes = { "settings-sidebar-item" }
+        };
+        button.Click += OnSettingsNavItemClick;
+        return button;
+    }
+
+    private IEnumerable<Button> EnumerateSettingsNavItems()
+    {
+        foreach (var button in SettingsPrimaryNavHost.Children.OfType<Button>())
+        {
+            yield return button;
+        }
+
+        foreach (var button in SettingsSecondaryNavHost.Children.OfType<Button>())
+        {
+            yield return button;
+        }
+
+        foreach (var button in SettingsPluginNavHost.Children.OfType<Button>())
+        {
+            yield return button;
+        }
+    }
+
+    private Button? GetSettingsNavItem(string tag)
+    {
+        if (_settingsNavItems.TryGetValue(tag, out var builtIn))
+        {
+            return builtIn;
+        }
+
+        return _pluginSettingsNavItems.GetValueOrDefault(tag);
+    }
+
+    private static void SetSettingsNavItemLabel(Button? button, string text)
+    {
+        if (button?.Content is Grid grid)
+        {
+            var label = grid.Children
+                .OfType<TextBlock>()
+                .FirstOrDefault(textBlock => textBlock.Classes.Contains("settings-nav-label"));
+
+            if (label is not null)
+            {
+                label.Text = text;
+            }
+        }
+    }
+
+    private void SelectSettingsTab(string? tag, bool persistSelection)
+    {
+        if (string.IsNullOrWhiteSpace(tag))
+        {
+            return;
+        }
+
+        var selectedButton = GetSettingsNavItem(tag);
+        if (selectedButton is null)
+        {
+            return;
+        }
+
+        _selectedSettingsTabTag = tag;
+        foreach (var button in EnumerateSettingsNavItems())
+        {
+            var isSelected = ReferenceEquals(button, selectedButton);
+            if (isSelected)
+            {
+                if (!button.Classes.Contains("nav-selected"))
+                {
+                    button.Classes.Add("nav-selected");
+                }
+            }
+            else
+            {
+                button.Classes.Remove("nav-selected");
+            }
+        }
+
+        UpdateSettingsTabContent();
+
+        if (persistSelection)
+        {
+            PersistSettings();
+        }
+    }
+
+    private int GetSettingsTabIndex()
+    {
+        return ResolveSelectedSettingsTabIndex();
+    }
+
+    private void UpdateSettingsTabContent()
+    {
+        var tag = GetSelectedSettingsTabTag();
 
         WallpaperSettingsPanel.IsVisible = tag == "Wallpaper";
         GridSettingsPanel.IsVisible = tag == "Grid";
@@ -95,12 +230,24 @@ public partial class SettingsWindow
         AboutSettingsPanel.IsVisible = tag == "About";
         LauncherSettingsPanel.IsVisible = tag == "Launcher";
         PluginSettingsPanel.IsVisible = tag == "Plugins";
+        PluginMarketSettingsPanel.IsVisible = tag == "PluginMarket";
+        UpdatePluginSettingsPageVisibility(tag);
 
         if (tag == "Launcher")
         {
             RenderLauncherHiddenItemsList();
         }
 
+        if (tag == "Plugins")
+        {
+            PluginSettingsPanel.RefreshFromRuntime();
+        }
+
+        if (tag == "PluginMarket")
+        {
+            PluginMarketSettingsPanel.RefreshFromRuntime();
+        }
+
         if (tag == "Grid")
         {
             UpdateGridPreviewLayout();
@@ -122,40 +269,41 @@ public partial class SettingsWindow
 
     private AppSettingsSnapshot BuildAppSettingsSnapshot()
     {
-        return new AppSettingsSnapshot
-        {
-            GridShortSideCells = _targetShortSideCells,
-            GridSpacingPreset = _gridSpacingPreset,
-            DesktopEdgeInsetPercent = _desktopEdgeInsetPercent,
-            IsNightMode = _isNightMode,
-            ThemeColor = _selectedThemeColor.ToString(),
-            WallpaperPath = _wallpaperPath,
-            WallpaperPlacement = GetPlacementDisplayName(GetSelectedWallpaperPlacement()),
-            SettingsTabIndex = Math.Max(0, GetSettingsTabIndex()),
-            LanguageCode = _languageCode,
-            TimeZoneId = _timeZoneService.CurrentTimeZone.Id,
-            WeatherLocationMode = ToWeatherLocationModeTag(_weatherLocationMode),
-            WeatherLocationKey = _weatherLocationKey,
-            WeatherLocationName = _weatherLocationName,
-            WeatherLatitude = _weatherLatitude,
-            WeatherLongitude = _weatherLongitude,
-            WeatherAutoRefreshLocation = _weatherAutoRefreshLocation,
-            WeatherLocationQuery = BuildLegacyWeatherLocationQuery(),
-            WeatherExcludedAlerts = _weatherExcludedAlertsRaw,
-            WeatherIconPackId = _weatherIconPackId,
-            WeatherNoTlsRequests = _weatherNoTlsRequests,
-            AutoStartWithWindows = _autoStartWithWindows,
-            AutoCheckUpdates = _autoCheckUpdates,
-            IncludePrereleaseUpdates = IncludePrereleaseUpdates,
-            UpdateChannel = IncludePrereleaseUpdates ? UpdateChannelPreview : UpdateChannelStable,
-            TopStatusComponentIds = _topStatusComponentIds.ToList(),
-            PinnedTaskbarActions = _pinnedTaskbarActions.Select(action => action.ToString()).ToList(),
-            EnableDynamicTaskbarActions = _enableDynamicTaskbarActions,
-            TaskbarLayoutMode = _taskbarLayoutMode,
-            ClockDisplayFormat = _clockDisplayFormat == ClockDisplayFormat.HourMinute ? "HourMinute" : "HourMinuteSecond",
-            StatusBarSpacingMode = _statusBarSpacingMode,
-            StatusBarCustomSpacingPercent = _statusBarCustomSpacingPercent
-        };
+        var snapshot = _appSettingsService.Load();
+        snapshot.GridShortSideCells = _targetShortSideCells;
+        snapshot.GridSpacingPreset = _gridSpacingPreset;
+        snapshot.DesktopEdgeInsetPercent = _desktopEdgeInsetPercent;
+        snapshot.IsNightMode = _isNightMode;
+        snapshot.ThemeColor = _selectedThemeColor.ToString();
+        snapshot.WallpaperPath = _wallpaperPath;
+        snapshot.WallpaperPlacement = GetPlacementDisplayName(GetSelectedWallpaperPlacement());
+        snapshot.SettingsTabIndex = Math.Max(0, GetSettingsTabIndex());
+        snapshot.SettingsTabTag = GetSelectedSettingsTabTag();
+        snapshot.LanguageCode = _languageCode;
+        snapshot.TimeZoneId = _timeZoneService.CurrentTimeZone.Id;
+        snapshot.WeatherLocationMode = ToWeatherLocationModeTag(_weatherLocationMode);
+        snapshot.WeatherLocationKey = _weatherLocationKey;
+        snapshot.WeatherLocationName = _weatherLocationName;
+        snapshot.WeatherLatitude = _weatherLatitude;
+        snapshot.WeatherLongitude = _weatherLongitude;
+        snapshot.WeatherAutoRefreshLocation = _weatherAutoRefreshLocation;
+        snapshot.WeatherLocationQuery = BuildLegacyWeatherLocationQuery();
+        snapshot.WeatherExcludedAlerts = _weatherExcludedAlertsRaw;
+        snapshot.WeatherIconPackId = _weatherIconPackId;
+        snapshot.WeatherNoTlsRequests = _weatherNoTlsRequests;
+        snapshot.AutoStartWithWindows = _autoStartWithWindows;
+        snapshot.AppRenderMode = _selectedAppRenderMode;
+        snapshot.AutoCheckUpdates = _autoCheckUpdates;
+        snapshot.IncludePrereleaseUpdates = IncludePrereleaseUpdates;
+        snapshot.UpdateChannel = IncludePrereleaseUpdates ? UpdateChannelPreview : UpdateChannelStable;
+        snapshot.TopStatusComponentIds = _topStatusComponentIds.ToList();
+        snapshot.PinnedTaskbarActions = _pinnedTaskbarActions.Select(action => action.ToString()).ToList();
+        snapshot.EnableDynamicTaskbarActions = _enableDynamicTaskbarActions;
+        snapshot.TaskbarLayoutMode = _taskbarLayoutMode;
+        snapshot.ClockDisplayFormat = _clockDisplayFormat == ClockDisplayFormat.HourMinute ? "HourMinute" : "HourMinuteSecond";
+        snapshot.StatusBarSpacingMode = _statusBarSpacingMode;
+        snapshot.StatusBarCustomSpacingPercent = _statusBarCustomSpacingPercent;
+        return snapshot;
     }
 
     private LauncherSettingsSnapshot BuildLauncherSettingsSnapshot()
@@ -293,6 +441,11 @@ public partial class SettingsWindow
             return;
         }
 
+        if (radioButton.IsChecked != true)
+        {
+            return;
+        }
+
         _clockDisplayFormat = formatTag == "Hm"
             ? ClockDisplayFormat.HourMinute
             : ClockDisplayFormat.HourMinuteSecond;
@@ -389,8 +542,7 @@ public partial class SettingsWindow
 
     private TaskbarContext GetCurrentTaskbarContext()
     {
-        var selectedItem = SettingsNavView?.SelectedItem as FluentAvalonia.UI.Controls.NavigationViewItem;
-        return selectedItem?.Tag?.ToString() switch
+        return GetSelectedSettingsTabTag() switch
         {
             "Wallpaper" => TaskbarContext.SettingsWallpaper,
             "Grid" => TaskbarContext.SettingsGrid,
@@ -514,3 +666,4 @@ public partial class SettingsWindow
         return Brushes.Transparent;
     }
 }
+

LanMountainDesktop/Views/SettingsWindow.Layout.cs

@@ -83,11 +83,6 @@ public partial class SettingsWindow
 
     private void OnGridSpacingPresetSelectionChanged(object? sender, SelectionChangedEventArgs e)
     {
-        if (_suppressGridSpacingEvents)
-        {
-            return;
-        }
-
         UpdateGridPreviewLayout();
     }
 

LanMountainDesktop/Views/SettingsWindow.Localization.cs

@@ -1,6 +1,7 @@
-using System;
+using System;
 using System.Linq;
 using Avalonia.Controls;
+using LanMountainDesktop.Services;
 
 namespace LanMountainDesktop.Views;
 
@@ -47,20 +48,33 @@ public partial class SettingsWindow
 
     private void ApplyLocalization()
     {
-        Title = L("settings.title", "Settings");
-        WindowTitleTextBlock.Text = L("settings.title", "Settings");
-        WindowSubtitleTextBlock.Text = L("settings.footer", "LanMountainDesktop Settings");
+        Title = L("settings.shell.title", "Application Settings");
+        WindowTitleTextBlock.Text = L("settings.shell.title", "Application Settings");
+        WindowSubtitleTextBlock.Text = L("settings.shell.subtitle", "LanMountainDesktop standalone preferences");
+        WindowVersionBadgeTextBlock.Text = GetAppVersionText();
+        WindowCodeNameBadgeTextBlock.Text = AppCodeName;
+        SettingsSidebarTitleTextBlock.Text = L("settings.nav_header", "Settings");
+        SettingsSidebarHintTextBlock.Text = L(
+            "settings.shell.sidebar_hint",
+            "Choose a category to adjust application behavior and desktop appearance.");
+        SettingsPrimaryGroupTextBlock.Text = L("settings.nav.group_desktop", "Desktop");
+        SettingsSecondaryGroupTextBlock.Text = L("settings.nav.group_system", "System");
+        SettingsPluginGroupTextBlock.Text = L("settings.nav.group_extensions", "Extensions");
+        SettingsSidebarFooterTextBlock.Text = L(
+            "settings.shell.footer_hint",
+            "Tray-opened settings are managed in this standalone window.");
 
-        SettingsNavWallpaperItem.Content = L("settings.nav.wallpaper", "Wallpaper");
-        SettingsNavGridItem.Content = L("settings.nav.grid", "Grid");
-        SettingsNavColorItem.Content = L("settings.nav.color", "Color");
-        SettingsNavStatusBarItem.Content = L("settings.nav.status_bar", "Status Bar");
-        SettingsNavWeatherItem.Content = L("settings.nav.weather", "Weather");
-        SettingsNavRegionItem.Content = L("settings.nav.region", "Region");
-        SettingsNavUpdateItem.Content = L("settings.nav.update", "Update");
-        SettingsNavAboutItem.Content = L("settings.nav.about", "About");
-        SettingsNavLauncherItem.Content = L("settings.nav.launcher", "App Launcher");
-        SettingsNavPluginsItem.Content = L("settings.nav.plugins", "Plugins");
+        SetSettingsNavItemLabel(GetSettingsNavItem("Wallpaper"), L("settings.nav.wallpaper", "Wallpaper"));
+        SetSettingsNavItemLabel(GetSettingsNavItem("Grid"), L("settings.nav.grid", "Grid"));
+        SetSettingsNavItemLabel(GetSettingsNavItem("Color"), L("settings.nav.color", "Color"));
+        SetSettingsNavItemLabel(GetSettingsNavItem("StatusBar"), L("settings.nav.status_bar", "Status Bar"));
+        SetSettingsNavItemLabel(GetSettingsNavItem("Weather"), L("settings.nav.weather", "Weather"));
+        SetSettingsNavItemLabel(GetSettingsNavItem("Region"), L("settings.nav.region", "Region"));
+        SetSettingsNavItemLabel(GetSettingsNavItem("Update"), L("settings.nav.update", "Update"));
+        SetSettingsNavItemLabel(GetSettingsNavItem("About"), L("settings.nav.about", "About"));
+        SetSettingsNavItemLabel(GetSettingsNavItem("Launcher"), L("settings.nav.launcher", "App Launcher"));
+        SetSettingsNavItemLabel(GetSettingsNavItem("Plugins"), L("settings.nav.plugins", "Plugins"));
+        SetSettingsNavItemLabel(GetSettingsNavItem("PluginMarket"), L("settings.nav.plugin_market", "Plugin Market"));
 
         WallpaperPanelTitleTextBlock.Text = L("settings.wallpaper.title", "Personalize your wallpaper");
         WallpaperPlacementSettingsExpander.Header = L("settings.wallpaper.placement_label", "Placement");
@@ -95,6 +109,60 @@ public partial class SettingsWindow
         StatusBarSpacingModeCustomItem.Content = L("settings.status_bar.spacing_mode_custom", "Custom");
         StatusBarSpacingCustomPanel.Content = L("settings.status_bar.spacing_custom_label", "Custom spacing (%)");
 
+        WeatherPanelTitleTextBlock.Text = L("settings.weather.title", "Weather");
+        WeatherPreviewSectionTextBlock.Text = L("settings.weather.preview_section", "Weather Preview");
+        WeatherSettingsSectionTextBlock.Text = L("settings.weather.settings_section", "Settings");
+        WeatherPreviewButton.Content = L("settings.weather.refresh_button", "Refresh");
+        WeatherPreviewResultTextBlock.Text = L("settings.weather.preview_hint", "Use refresh to verify your weather configuration.");
+        WeatherLocationSettingsExpander.Header = L("settings.weather.location_source_header", "Location Source");
+        WeatherLocationSettingsExpander.Description = L(
+            "settings.weather.location_source_desc",
+            "Choose how weather widgets resolve location.");
+        WeatherLocationModeCityItem.Content = L("settings.weather.mode_city_search", "City Search");
+        WeatherLocationModeCoordinatesItem.Content = L("settings.weather.mode_coordinates", "Coordinates");
+        WeatherLocationModeCityChipItem.Content = L("settings.weather.mode_city_search", "City Search");
+        WeatherLocationModeCoordinatesChipItem.Content = L("settings.weather.mode_coordinates", "Coordinates");
+        WeatherAutoRefreshToggleSwitch.Content = L("settings.weather.auto_refresh", "Auto refresh location on startup");
+        WeatherCitySearchSettingsExpander.Header = L("settings.weather.city_search_header", "City Search");
+        WeatherCitySearchSettingsExpander.Description = L(
+            "settings.weather.city_search_desc",
+            "Search cities and apply one weather location.");
+        WeatherCitySearchTextBox.Watermark = L("settings.weather.search_placeholder", "e.g. Beijing");
+        WeatherSearchButton.Content = L("settings.weather.search_button", "Search");
+        WeatherApplyCityButton.Content = L("settings.weather.apply_city_button", "Apply City");
+        WeatherSearchStatusTextBlock.Text = L("settings.weather.search_hint", "Search by city name and apply one location.");
+        WeatherCoordinateSettingsExpander.Header = L("settings.weather.coordinates_header", "Coordinates");
+        WeatherCoordinateSettingsExpander.Description = L(
+            "settings.weather.coordinates_desc",
+            "Set latitude/longitude and optional key/name.");
+        WeatherLatitudeNumberBox.Header = L("settings.weather.latitude_label", "Latitude");
+        WeatherLongitudeNumberBox.Header = L("settings.weather.longitude_label", "Longitude");
+        WeatherLocationKeyTextBox.Watermark = L("settings.weather.location_key_placeholder", "Location key (optional)");
+        WeatherLocationNameTextBox.Watermark = L("settings.weather.location_name_placeholder", "Display name (optional)");
+        WeatherApplyCoordinatesButton.Content = L("settings.weather.apply_coordinates_button", "Apply Coordinates");
+        WeatherAlertFilterSettingsExpander.Header = L("settings.weather.alert_filter_header", "Excluded Alerts");
+        WeatherAlertFilterSettingsExpander.Description = L(
+            "settings.weather.alert_filter_desc",
+            "Alerts containing these words will not be shown. One rule per line.");
+        WeatherAlertListTitleTextBlock.Text = L("settings.weather.alert_list_label", "Exclude List");
+        WeatherAlertListDescriptionTextBlock.Text = L("settings.weather.alert_list_desc", "One exclusion rule per line.");
+        WeatherExcludedAlertsTextBox.Watermark = L("settings.weather.alert_filter_placeholder", "One keyword per line");
+        WeatherNoTlsSettingsExpander.Header = L("settings.weather.no_tls_header", "No TLS Weather Request");
+        WeatherNoTlsSettingsExpander.Description = L(
+            "settings.weather.no_tls_desc",
+            "Not recommended. Enable only for incompatible network environments.");
+        WeatherNoTlsToggleSwitch.Content = L("settings.weather.no_tls_toggle", "Allow non-TLS request fallback");
+        WeatherFooterHintTextBlock.Text = L(
+            "settings.weather.footer_hint",
+            "Desktop weather widgets will reuse the location and alert exclusion settings configured here.");
+        WeatherIconPackSettingsExpander.Header = L("settings.weather.icon_style_header", "Weather Icon Style");
+        WeatherIconPackSettingsExpander.Description = L(
+            "settings.weather.icon_style_desc",
+            "Choose Fluent Icon style for weather symbols.");
+        WeatherIconPackFluentRegularItem.Content = L("settings.weather.icon_style_fluent_regular", "Fluent Regular");
+        WeatherIconPackFluentFilledItem.Content = L("settings.weather.icon_style_fluent_filled", "Fluent Filled");
+        UpdateWeatherLocationStatusText();
+
         RegionPanelTitleTextBlock.Text = L("settings.region.title", "Region");
         LanguageSettingsExpander.Header = L("settings.region.language_header", "Language");
         LanguageSettingsExpander.Description = L("settings.region.language_desc", "Select application language. Changes apply immediately.");
@@ -109,11 +177,8 @@ public partial class SettingsWindow
         LauncherHiddenItemsDescriptionTextBlock.Text = L("settings.launcher.hidden_hint", "Right-click an icon in launcher to hide it. Hidden entries appear here.");
         LauncherHiddenItemsEmptyTextBlock.Text = L("settings.launcher.hidden_empty", "No hidden items.");
 
-        PluginSettingsPanelTitleTextBlock.Text = L("settings.plugins.title", "Plugins");
-        PluginSystemSettingsExpander.Header = L("settings.plugins.runtime_header", "Plugin Runtime");
-        PluginSystemSettingsExpander.Description = L("settings.plugins.runtime_desc", "Manage plugin loading and backend isolation.");
-        PluginSystemDescriptionTextBlock.Text = L("settings.plugins.runtime_hint", "This page will host installed plugin management, permission review, and sandboxed backend runtime controls.");
-        PluginSystemStatusTextBlock.Text = L("settings.plugins.runtime_status", "Plugin management UI is not connected yet. Next step is wiring the loader, permissions, and worker isolation state into this panel.");
+        ApplyPluginSettingsLocalization();
+        ApplyPluginMarketSettingsLocalization();
 
         AboutPanelTitleTextBlock.Text = L("settings.about.title", "About");
         VersionTextBlock.Text = Lf("settings.about.version_format", "Version: {0}", GetAppVersionText());
@@ -121,6 +186,17 @@ public partial class SettingsWindow
         FontInfoTextBlock.Text = Lf("settings.about.font_format", "Font: {0}", AppFontName);
         AboutStartupSettingsExpander.Header = L("settings.about.startup_header", "Windows Startup");
         AboutStartupSettingsExpander.Description = L("settings.about.startup_desc", "Launch the app automatically when signing in to Windows.");
+        AboutRenderModeSettingsExpander.Header = L("settings.about.render_mode_header", "Rendering Mode");
+        AboutRenderModeSettingsExpander.Description = L(
+            "settings.about.render_mode_desc",
+            "Choose the rendering backend. Restart the app after changing this option. Unsupported modes fall back to software.");
+        SetAppRenderModeComboItemContent(AppRenderingModeHelper.Default, L("settings.about.render_mode.default", "Default"));
+        SetAppRenderModeComboItemContent(AppRenderingModeHelper.Software, L("settings.about.render_mode.software", "Software"));
+        SetAppRenderModeComboItemContent(AppRenderingModeHelper.AngleEgl, L("settings.about.render_mode.angle_egl", "angleEgl"));
+        SetAppRenderModeComboItemContent(AppRenderingModeHelper.Wgl, L("settings.about.render_mode.wgl", "WGL"));
+        SetAppRenderModeComboItemContent(AppRenderingModeHelper.Vulkan, L("settings.about.render_mode.vulkan", "Vulkan"));
+        UpdateCurrentRenderBackendStatus();
+        UpdatePendingRestartDock();
 
         var placementItems = WallpaperPlacementComboBox.Items.OfType<ComboBoxItem>().ToList();
         if (placementItems.Count >= 5)
@@ -137,6 +213,19 @@ public partial class SettingsWindow
         RenderLauncherHiddenItemsList();
     }
 
+    private void SetAppRenderModeComboItemContent(string tag, string content)
+    {
+        var item = AppRenderModeComboBox.Items
+            .OfType<ComboBoxItem>()
+            .FirstOrDefault(candidate =>
+                string.Equals(candidate.Tag?.ToString(), tag, StringComparison.OrdinalIgnoreCase));
+
+        if (item is not null)
+        {
+            item.Content = content;
+        }
+    }
+
     private string GetLocalizedTimeZoneDisplayName(TimeZoneInfo timeZone)
     {
         var offset = timeZone.GetUtcOffset(DateTime.UtcNow);
@@ -183,3 +272,4 @@ public partial class SettingsWindow
         PersistSettings();
     }
 }
+

LanMountainDesktop/Views/SettingsWindow.RenderBackend.cs

@@ -0,0 +1,42 @@
+using System;
+using LanMountainDesktop.Services;
+
+namespace LanMountainDesktop.Views;
+
+public partial class SettingsWindow
+{
+    private void UpdateCurrentRenderBackendStatus()
+    {
+        var backendInfo = AppRenderBackendDiagnostics.Detect();
+        var localizedBackend = GetLocalizedRenderBackendName(backendInfo.ActualBackend);
+
+        CurrentRenderBackendLabelTextBlock.Text = L(
+            "settings.about.render_mode.current_label",
+            "Current actual backend");
+        CurrentRenderBackendValueTextBlock.Text = Lf(
+            "settings.about.render_mode.current_format",
+            "Current backend: {0}",
+            localizedBackend);
+        CurrentRenderBackendImplementationTextBlock.Text = string.IsNullOrWhiteSpace(backendInfo.ImplementationTypeName)
+            ? L(
+                "settings.about.render_mode.impl_unavailable",
+                "Runtime implementation is unavailable.")
+            : Lf(
+                "settings.about.render_mode.impl_format",
+                "Runtime implementation: {0}",
+                backendInfo.ImplementationTypeName);
+    }
+
+    private string GetLocalizedRenderBackendName(string renderBackend)
+    {
+        return renderBackend switch
+        {
+            AppRenderingModeHelper.Default => L("settings.about.render_mode.default", "Default"),
+            AppRenderingModeHelper.Software => L("settings.about.render_mode.software", "Software"),
+            AppRenderingModeHelper.AngleEgl => L("settings.about.render_mode.angle_egl", "angleEgl"),
+            AppRenderingModeHelper.Wgl => L("settings.about.render_mode.wgl", "WGL"),
+            AppRenderingModeHelper.Vulkan => L("settings.about.render_mode.vulkan", "Vulkan"),
+            _ => L("settings.about.render_mode.unknown", "Unknown")
+        };
+    }
+}

LanMountainDesktop/Views/SettingsWindow.RestartPrompt.cs

@@ -0,0 +1,112 @@
+using System.Threading.Tasks;
+using Avalonia.Interactivity;
+using Avalonia.Threading;
+using FluentAvalonia.UI.Controls;
+using LanMountainDesktop.Services;
+
+namespace LanMountainDesktop.Views;
+
+public partial class SettingsWindow
+{
+    private bool _isRestartPromptVisible;
+
+    private void OnPendingRestartStateChanged()
+    {
+        if (Dispatcher.UIThread.CheckAccess())
+        {
+            UpdatePendingRestartDock();
+            return;
+        }
+
+        Dispatcher.UIThread.Post(UpdatePendingRestartDock);
+    }
+
+    private void UpdatePendingRestartDock()
+    {
+        PendingRestartDock.IsVisible = PendingRestartStateService.HasPendingRestart;
+        PendingRestartDockTitleTextBlock.Text = L("settings.restart_dock.title", "Restart required");
+        PendingRestartDockDescriptionTextBlock.Text = L(
+            "settings.restart_dock.description",
+            "Some changes will take effect after restarting the app.");
+        PendingRestartDockButtonTextBlock.Text = L("settings.restart_dock.button", "Restart app");
+    }
+
+    private async void OnPendingRestartDockButtonClick(object? sender, RoutedEventArgs e)
+    {
+        await ShowGenericRestartPromptAsync();
+    }
+
+    private Task ShowRenderModeRestartPromptAsync(string selectedMode)
+    {
+        var message = Lf(
+            "settings.restart_dialog.render_mode_message",
+            "Restart the app to switch the rendering mode from \"{0}\" to \"{1}\". Restart now?",
+            GetLocalizedAppRenderModeDisplayName(_runningAppRenderMode),
+            GetLocalizedAppRenderModeDisplayName(selectedMode));
+
+        return ShowRestartPromptCoreAsync(message);
+    }
+
+    private Task ShowGenericRestartPromptAsync()
+    {
+        return ShowRestartPromptCoreAsync(L(
+            "settings.restart_dock.description",
+            "Some changes will take effect after restarting the app."));
+    }
+
+    private async Task ShowRestartPromptCoreAsync(string message)
+    {
+        if (_isRestartPromptVisible)
+        {
+            return;
+        }
+
+        _isRestartPromptVisible = true;
+
+        try
+        {
+            var dialog = new ContentDialog
+            {
+                Title = L("settings.restart_dialog.title", "Restart required"),
+                Content = message,
+                PrimaryButtonText = L("settings.restart_dialog.restart", "Restart now"),
+                CloseButtonText = L("settings.restart_dialog.cancel", "Cancel"),
+                DefaultButton = ContentDialogButton.Primary
+            };
+
+            var result = await dialog.ShowAsync(this);
+            if (result == ContentDialogResult.Primary)
+            {
+                if (!AppRestartService.TryRestartApplication())
+                {
+                    UpdatePendingRestartDock();
+                }
+
+                return;
+            }
+
+            UpdatePendingRestartDock();
+        }
+        finally
+        {
+            _isRestartPromptVisible = false;
+        }
+    }
+
+    private string GetLocalizedAppRenderModeDisplayName(string renderMode)
+    {
+        if (renderMode == AppRenderBackendDiagnostics.Unknown)
+        {
+            return L("settings.about.render_mode.unknown", "Unknown");
+        }
+
+        return AppRenderingModeHelper.Normalize(renderMode) switch
+        {
+            AppRenderingModeHelper.Software => L("settings.about.render_mode.software", "Software"),
+            AppRenderingModeHelper.AngleEgl => L("settings.about.render_mode.angle_egl", "angleEgl"),
+            AppRenderingModeHelper.Wgl => L("settings.about.render_mode.wgl", "WGL"),
+            AppRenderingModeHelper.Vulkan => L("settings.about.render_mode.vulkan", "Vulkan"),
+            _ => L("settings.about.render_mode.default", "Default")
+        };
+    }
+}

LanMountainDesktop/Views/SettingsWindow.WeatherLauncher.cs

@@ -11,9 +11,11 @@ using Avalonia.Layout;
 using Avalonia.Media;
 using Avalonia.Media.Imaging;
 using Avalonia.Threading;
+using FluentAvalonia.UI.Controls;
 using FluentIcons.Common;
 using LanMountainDesktop.Models;
 using LanMountainDesktop.Services;
+using LanMountainDesktop.Views.Components;
 
 namespace LanMountainDesktop.Views;
 
@@ -89,6 +91,51 @@ public partial class SettingsWindow
         }
     }
 
+    private void InitializeAppRenderModeSetting(AppSettingsSnapshot snapshot)
+    {
+        _selectedAppRenderMode = AppRenderingModeHelper.Normalize(snapshot.AppRenderMode);
+        _runningAppRenderMode = ResolveActiveAppRenderModeForUi(_selectedAppRenderMode);
+        var renderModeForUi = PendingRestartStateService.HasPendingReason(PendingRestartStateService.RenderModeReason)
+            ? _selectedAppRenderMode
+            : _runningAppRenderMode;
+
+        _suppressAppRenderModeSelectionEvents = true;
+        try
+        {
+            AppRenderModeComboBox.IsEnabled = OperatingSystem.IsWindows();
+            SelectAppRenderModeInUi(renderModeForUi);
+        }
+        finally
+        {
+            _suppressAppRenderModeSelectionEvents = false;
+        }
+    }
+
+    private void SelectAppRenderModeInUi(string renderMode)
+    {
+        AppRenderModeComboBox.SelectedIndex = GetAppRenderModeComboBoxIndex(renderMode);
+    }
+
+    private static int GetAppRenderModeComboBoxIndex(string renderMode)
+    {
+        return AppRenderingModeHelper.Normalize(renderMode) switch
+        {
+            AppRenderingModeHelper.Software => 1,
+            AppRenderingModeHelper.AngleEgl => 2,
+            AppRenderingModeHelper.Wgl => 3,
+            AppRenderingModeHelper.Vulkan => 4,
+            _ => 0
+        };
+    }
+
+    private static string ResolveActiveAppRenderModeForUi(string configuredRenderMode)
+    {
+        var detectedRenderMode = AppRenderBackendDiagnostics.Detect().ActualBackend;
+        return string.Equals(detectedRenderMode, AppRenderBackendDiagnostics.Unknown, StringComparison.Ordinal)
+            ? configuredRenderMode
+            : AppRenderingModeHelper.Normalize(detectedRenderMode);
+    }
+
     private static WeatherLocationMode ParseWeatherLocationMode(string? value)
     {
         return string.Equals(value, "Coordinates", StringComparison.OrdinalIgnoreCase)
@@ -180,6 +227,7 @@ public partial class SettingsWindow
     {
         WeatherCitySearchSettingsExpander.IsVisible = _weatherLocationMode == WeatherLocationMode.CitySearch;
         WeatherCoordinateSettingsExpander.IsVisible = _weatherLocationMode == WeatherLocationMode.Coordinates;
+        UpdateWeatherLocationSummaryCard();
     }
 
     private void OnWeatherLocationModeSelectionChanged(object? sender, SelectionChangedEventArgs e)
@@ -319,6 +367,33 @@ public partial class SettingsWindow
         PersistSettings();
     }
 
+    private void OnAppRenderModeSelectionChanged(object? sender, SelectionChangedEventArgs e)
+    {
+        if (_suppressAppRenderModeSelectionEvents)
+        {
+            return;
+        }
+
+        var selectedMode = AppRenderingModeHelper.Normalize(
+            TryGetSelectedComboBoxTag(AppRenderModeComboBox));
+
+        if (string.Equals(_selectedAppRenderMode, selectedMode, StringComparison.Ordinal))
+        {
+            return;
+        }
+
+        _selectedAppRenderMode = selectedMode;
+        PersistSettings();
+        var requiresRestart = !string.Equals(_runningAppRenderMode, selectedMode, StringComparison.Ordinal);
+        PendingRestartStateService.SetPending(PendingRestartStateService.RenderModeReason, requiresRestart);
+        UpdatePendingRestartDock();
+
+        if (requiresRestart)
+        {
+            _ = ShowRenderModeRestartPromptAsync(selectedMode);
+        }
+    }
+
     private async void OnSearchWeatherCityClick(object? sender, RoutedEventArgs e)
     {
         if (_isWeatherSearchInProgress)
@@ -512,7 +587,7 @@ public partial class SettingsWindow
                 : snapshot.LocationName;
             var weather = snapshot.Current.WeatherText ?? L("settings.weather.preview_unknown", "Unknown");
             var temperature = snapshot.Current.TemperatureC.HasValue
-                ? string.Create(CultureInfo.InvariantCulture, $"{snapshot.Current.TemperatureC.Value:F1} C")
+                ? FormatWeatherPreviewTemperature(snapshot.Current.TemperatureC.Value)
                 : "--";
             var updatedAt = snapshot.ObservationTime ?? snapshot.FetchedAt;
 
@@ -533,28 +608,37 @@ public partial class SettingsWindow
 
     private void UpdateWeatherPreviewSummary(int? weatherCode, string temperatureText, DateTimeOffset? updatedAt)
     {
+        var kind = HyperOS3WeatherTheme.ResolveVisualKind(weatherCode, _isNightMode);
+        WeatherPreviewIconImage.Source = HyperOS3WeatherAssetLoader.LoadImage(
+            HyperOS3WeatherTheme.ResolveIconAsset(kind)) ??
+            HyperOS3WeatherAssetLoader.LoadImage(HyperOS3WeatherTheme.ResolveHeroIconAsset(kind));
         WeatherPreviewIconSymbol.Symbol = ResolveWeatherPreviewSymbol(weatherCode, _isNightMode);
         WeatherPreviewIconSymbol.IconVariant = string.Equals(_weatherIconPackId, "FluentFilled", StringComparison.OrdinalIgnoreCase)
             ? IconVariant.Filled
             : IconVariant.Regular;
         WeatherPreviewTemperatureTextBlock.Text = string.IsNullOrWhiteSpace(temperatureText) ? "--" : temperatureText;
         WeatherPreviewUpdatedTextBlock.Text = updatedAt.HasValue
-            ? Lf("weather.widget.updated_format", "Updated {0:HH:mm}", updatedAt.Value.LocalDateTime)
+            ? updatedAt.Value.LocalDateTime.ToString("yyyy/M/d HH:mm:ss", CultureInfo.InvariantCulture)
             : "-";
     }
 
-    private static Symbol ResolveWeatherPreviewSymbol(int? weatherCode, bool isNight)
+    private static string FormatWeatherPreviewTemperature(double temperatureC)
+    {
+        return string.Create(CultureInfo.InvariantCulture, $"{temperatureC:0.#}°C");
+    }
+
+    private static FluentIcons.Common.Symbol ResolveWeatherPreviewSymbol(int? weatherCode, bool isNight)
     {
         return weatherCode switch
         {
-            0 => isNight ? Symbol.WeatherMoon : Symbol.WeatherSunny,
-            1 or 2 => isNight ? Symbol.WeatherPartlyCloudyNight : Symbol.WeatherPartlyCloudyDay,
-            3 or 7 => Symbol.WeatherRainShowersDay,
-            8 or 9 => Symbol.WeatherRain,
-            4 => Symbol.WeatherThunderstorm,
-            13 or 14 or 15 or 16 => Symbol.WeatherSnow,
-            18 or 32 => Symbol.WeatherFog,
-            _ => isNight ? Symbol.WeatherPartlyCloudyNight : Symbol.WeatherPartlyCloudyDay
+            0 => isNight ? FluentIcons.Common.Symbol.WeatherMoon : FluentIcons.Common.Symbol.WeatherSunny,
+            1 or 2 => isNight ? FluentIcons.Common.Symbol.WeatherPartlyCloudyNight : FluentIcons.Common.Symbol.WeatherPartlyCloudyDay,
+            3 or 7 => FluentIcons.Common.Symbol.WeatherRainShowersDay,
+            8 or 9 => FluentIcons.Common.Symbol.WeatherRain,
+            4 => FluentIcons.Common.Symbol.WeatherThunderstorm,
+            13 or 14 or 15 or 16 => FluentIcons.Common.Symbol.WeatherSnow,
+            18 or 32 => FluentIcons.Common.Symbol.WeatherFog,
+            _ => isNight ? FluentIcons.Common.Symbol.WeatherPartlyCloudyNight : FluentIcons.Common.Symbol.WeatherPartlyCloudyDay
         };
     }
 
@@ -586,11 +670,13 @@ public partial class SettingsWindow
             if (string.IsNullOrWhiteSpace(_weatherLocationKey))
             {
                 WeatherLocationStatusTextBlock.Text = L("settings.weather.status_city_empty", "No city location is configured.");
+                UpdateWeatherLocationSummaryCard();
                 return;
             }
 
             var locationName = string.IsNullOrWhiteSpace(_weatherLocationName) ? _weatherLocationKey : _weatherLocationName;
             WeatherLocationStatusTextBlock.Text = Lf("settings.weather.status_city_format", "Mode: {0} | {1} | Key: {2}", modeText, locationName, _weatherLocationKey);
+            UpdateWeatherLocationSummaryCard();
             return;
         }
 
@@ -601,6 +687,34 @@ public partial class SettingsWindow
             _weatherLatitude,
             _weatherLongitude,
             string.IsNullOrWhiteSpace(_weatherLocationKey) ? BuildCoordinateLocationKey(_weatherLatitude, _weatherLongitude) : _weatherLocationKey);
+        UpdateWeatherLocationSummaryCard();
+    }
+
+    private void UpdateWeatherLocationSummaryCard()
+    {
+        if (_weatherLocationMode == WeatherLocationMode.Coordinates)
+        {
+            WeatherLocationSelectionTitleTextBlock.Text = L("settings.weather.coordinates_selection_label", "Coordinate Location");
+            WeatherLocationSelectionDescriptionTextBlock.Text = L(
+                "settings.weather.location_coordinates_summary_desc",
+                "Set latitude/longitude and optional location name used for weather queries.");
+
+            var locationName = string.IsNullOrWhiteSpace(_weatherLocationName)
+                ? string.Create(CultureInfo.InvariantCulture, $"{_weatherLatitude:F4}, {_weatherLongitude:F4}")
+                : _weatherLocationName;
+            WeatherLocationValueTextBlock.Text = locationName;
+            return;
+        }
+
+        WeatherLocationSelectionTitleTextBlock.Text = L("settings.weather.city_selection_label", "City Selection");
+        WeatherLocationSelectionDescriptionTextBlock.Text = L(
+            "settings.weather.location_city_summary_desc",
+            "Select the current city used for weather queries.");
+        WeatherLocationValueTextBlock.Text = !string.IsNullOrWhiteSpace(_weatherLocationName)
+            ? _weatherLocationName
+            : !string.IsNullOrWhiteSpace(_weatherLocationKey)
+                ? _weatherLocationKey
+                : L("settings.weather.location_not_selected", "No location selected");
     }
 
     private void InitializeLauncherVisibilitySettings(LauncherSettingsSnapshot snapshot)
@@ -669,7 +783,7 @@ public partial class SettingsWindow
 
     private void RenderLauncherHiddenItemsList()
     {
-        LauncherHiddenItemsListPanel.Children.Clear();
+        LauncherHiddenItemsSettingsExpander.Items.Clear();
         var hiddenItems = BuildLauncherHiddenItems();
         LauncherHiddenItemsEmptyTextBlock.IsVisible = hiddenItems.Count == 0;
         if (hiddenItems.Count == 0)
@@ -679,7 +793,7 @@ public partial class SettingsWindow
 
         foreach (var hiddenItem in hiddenItems)
         {
-            LauncherHiddenItemsListPanel.Children.Add(CreateLauncherHiddenItemRow(hiddenItem));
+            LauncherHiddenItemsSettingsExpander.Items.Add(CreateLauncherHiddenItemRow(hiddenItem));
         }
     }
 
@@ -751,82 +865,47 @@ public partial class SettingsWindow
         return string.IsNullOrWhiteSpace(fileName) ? key : fileName;
     }
 
-    private Control CreateLauncherHiddenItemRow(LauncherHiddenItemView hiddenItem)
+    private SettingsExpanderItem CreateLauncherHiddenItemRow(LauncherHiddenItemView hiddenItem)
     {
-        Control icon = hiddenItem.IconBitmap is not null
-            ? new Image
-            {
-                Source = hiddenItem.IconBitmap,
-                Width = 24,
-                Height = 24,
-                Stretch = Stretch.Uniform
-            }
-            : new Border
-            {
-                Width = 24,
-                Height = 24,
-                CornerRadius = new CornerRadius(999),
-                Background = GetThemeBrush("AdaptiveButtonBackgroundBrush"),
-                Child = new TextBlock
-                {
-                    Text = hiddenItem.Monogram,
-                    FontSize = 10,
-                    FontWeight = FontWeight.Bold,
-                    HorizontalAlignment = HorizontalAlignment.Center,
-                    VerticalAlignment = VerticalAlignment.Center
-                }
-            };
-
         var typeText = hiddenItem.Kind == LauncherEntryKind.Folder
             ? L("settings.launcher.hidden_type_folder", "Folder")
             : L("settings.launcher.hidden_type_shortcut", "Shortcut");
 
-        var infoPanel = new StackPanel
-        {
-            Orientation = Orientation.Horizontal,
-            Spacing = 10,
-            VerticalAlignment = VerticalAlignment.Center,
-            HorizontalAlignment = HorizontalAlignment.Stretch
-        };
-        infoPanel.Children.Add(icon);
-        infoPanel.Children.Add(new StackPanel
-        {
-            Spacing = 2,
-            VerticalAlignment = VerticalAlignment.Center,
-            HorizontalAlignment = HorizontalAlignment.Left,
-            Children =
-            {
-                new TextBlock { Text = hiddenItem.DisplayName, TextTrimming = TextTrimming.CharacterEllipsis, MaxLines = 1 },
-                new TextBlock { Text = typeText, FontSize = 11, Opacity = 0.7 }
-            }
-        });
-
         var restoreButton = new Button
         {
-            Content = L("settings.launcher.restore_button", "Show Again"),
+            Content = L("settings.launcher.restore_button", "Unhide"),
             MinWidth = 110,
             Padding = new Thickness(12, 6),
             Tag = new LauncherHiddenItemToken(hiddenItem.Kind, hiddenItem.Key)
         };
         restoreButton.Click += OnRestoreLauncherHiddenItemClick;
 
-        var row = new Grid
+        return new SettingsExpanderItem
         {
-            ColumnDefinitions = new ColumnDefinitions("*,Auto"),
-            ColumnSpacing = 10
+            Content = hiddenItem.DisplayName,
+            Description = typeText,
+            IconSource = CreateLauncherHiddenItemIconSource(hiddenItem),
+            IsClickEnabled = false,
+            Footer = restoreButton
         };
-        row.Children.Add(infoPanel);
-        Grid.SetColumn(infoPanel, 0);
-        row.Children.Add(restoreButton);
-        Grid.SetColumn(restoreButton, 1);
+    }
 
-        return new Border
+    private IconSource CreateLauncherHiddenItemIconSource(LauncherHiddenItemView hiddenItem)
+    {
+        if (hiddenItem.IconBitmap is not null)
         {
-            Classes = { "glass-panel" },
-            BorderThickness = new Thickness(0),
-            CornerRadius = new CornerRadius(14),
-            Padding = new Thickness(10, 8),
-            Child = row
+            return new ImageIconSource
+            {
+                Source = hiddenItem.IconBitmap
+            };
+        }
+
+        return new FluentIcons.Avalonia.Fluent.SymbolIconSource
+        {
+            Symbol = hiddenItem.Kind == LauncherEntryKind.Folder
+                ? FluentIcons.Common.Symbol.Folder
+                : FluentIcons.Common.Symbol.Apps,
+            IconVariant = FluentIcons.Common.IconVariant.Regular
         };
     }
 

LanMountainDesktop/Views/SettingsWindow.axaml

@@ -1,6 +1,5 @@
 <Window xmlns="https://github.com/avaloniaui"
         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
-        xmlns:ui="using:FluentAvalonia.UI.Controls"
         xmlns:fi="using:FluentIcons.Avalonia"
         xmlns:ic="using:FluentIcons.Avalonia.Fluent"
         xmlns:pages="using:LanMountainDesktop.Views.SettingsPages"
@@ -8,16 +7,94 @@
         x:Class="LanMountainDesktop.Views.SettingsWindow"
         Title="Settings"
         Icon="/Assets/avalonia-logo.ico"
-        Width="1360"
-        Height="900"
-        MinWidth="1120"
-        MinHeight="760"
+        Width="1520"
+        Height="960"
+        MinWidth="1240"
+        MinHeight="820"
         ShowInTaskbar="True"
         WindowStartupLocation="CenterScreen"
-        ExtendClientAreaToDecorationsHint="True"
-        ExtendClientAreaChromeHints="SystemChrome"
         Background="{DynamicResource AdaptiveSurfaceBaseBrush}">
 
+    <Window.Styles>
+        <Style Selector="Border.settings-shell-card">
+            <Setter Property="Background" Value="{DynamicResource AdaptiveGlassPanelBackgroundBrush}" />
+            <Setter Property="BorderBrush" Value="{DynamicResource AdaptiveGlassPanelBorderBrush}" />
+            <Setter Property="BorderThickness" Value="1" />
+            <Setter Property="CornerRadius" Value="28" />
+            <Setter Property="BoxShadow" Value="0 10 28 #12000000" />
+        </Style>
+
+        <Style Selector="TextBlock.settings-shell-eyebrow">
+            <Setter Property="FontSize" Value="12" />
+            <Setter Property="FontWeight" Value="SemiBold" />
+            <Setter Property="Foreground" Value="{DynamicResource AdaptiveTextSecondaryBrush}" />
+        </Style>
+
+        <Style Selector="TextBlock.settings-shell-hint">
+            <Setter Property="FontSize" Value="13" />
+            <Setter Property="Foreground" Value="{DynamicResource AdaptiveTextSecondaryBrush}" />
+        </Style>
+
+        <Style Selector="StackPanel.settings-sidebar-host Button.settings-sidebar-item">
+            <Setter Property="Background" Value="Transparent" />
+            <Setter Property="BorderBrush" Value="Transparent" />
+            <Setter Property="BorderThickness" Value="1" />
+            <Setter Property="CornerRadius" Value="18" />
+            <Setter Property="Padding" Value="14,12" />
+            <Setter Property="Margin" Value="0,0,0,8" />
+            <Setter Property="HorizontalContentAlignment" Value="Stretch" />
+            <Setter Property="Transitions">
+                <Transitions>
+                    <BrushTransition Property="Background" Duration="{StaticResource FluttermotionToken.Duration.Fast}" Easing="0.22,1,0.36,1" />
+                    <BrushTransition Property="BorderBrush" Duration="{StaticResource FluttermotionToken.Duration.Fast}" Easing="0.22,1,0.36,1" />
+                    <TransformOperationsTransition Property="RenderTransform" Duration="{StaticResource FluttermotionToken.Duration.Fast}" Easing="0.22,1,0.36,1" />
+                </Transitions>
+            </Setter>
+        </Style>
+
+        <Style Selector="StackPanel.settings-sidebar-host Button.settings-sidebar-item:pointerover">
+            <Setter Property="Background" Value="{DynamicResource AdaptiveButtonHoverBackgroundBrush}" />
+            <Setter Property="BorderBrush" Value="{DynamicResource AdaptiveButtonBorderBrush}" />
+            <Setter Property="RenderTransform" Value="scale(1.01)" />
+        </Style>
+
+        <Style Selector="StackPanel.settings-sidebar-host Button.settings-sidebar-item.nav-selected">
+            <Setter Property="Background" Value="{DynamicResource AdaptiveNavItemSelectedBackgroundBrush}" />
+            <Setter Property="BorderBrush" Value="{DynamicResource AdaptiveAccentBrush}" />
+        </Style>
+
+        <Style Selector="Border.settings-sidebar-icon-shell">
+            <Setter Property="Width" Value="34" />
+            <Setter Property="Height" Value="34" />
+            <Setter Property="CornerRadius" Value="12" />
+            <Setter Property="Background" Value="{DynamicResource AdaptiveButtonBackgroundBrush}" />
+            <Setter Property="BorderBrush" Value="{DynamicResource AdaptiveButtonBorderBrush}" />
+            <Setter Property="BorderThickness" Value="1" />
+        </Style>
+
+        <Style Selector="Button.settings-sidebar-item.nav-selected Border.settings-sidebar-icon-shell">
+            <Setter Property="Background" Value="{DynamicResource AdaptiveAccentBrush}" />
+            <Setter Property="BorderBrush" Value="{DynamicResource AdaptiveAccentBrush}" />
+        </Style>
+
+        <Style Selector="TextBlock.settings-nav-label">
+            <Setter Property="FontSize" Value="16" />
+            <Setter Property="FontWeight" Value="SemiBold" />
+            <Setter Property="VerticalAlignment" Value="Center" />
+        </Style>
+
+        <Style Selector="ic|SymbolIcon.settings-nav-icon">
+            <Setter Property="Foreground" Value="{DynamicResource AdaptiveTextPrimaryBrush}" />
+            <Setter Property="FontSize" Value="18" />
+            <Setter Property="HorizontalAlignment" Value="Center" />
+            <Setter Property="VerticalAlignment" Value="Center" />
+        </Style>
+
+        <Style Selector="Button.settings-sidebar-item.nav-selected ic|SymbolIcon.settings-nav-icon">
+            <Setter Property="Foreground" Value="White" />
+        </Style>
+    </Window.Styles>
+
     <Grid x:Name="DesktopHost">
         <Border x:Name="DesktopWallpaperLayer"
                 Background="{DynamicResource AdaptiveSurfaceBaseBrush}" />
@@ -27,121 +104,145 @@
               IsVisible="True"
               Opacity="1"
               Margin="20">
-            <Border x:Name="SettingsContentPanel"
-                    Background="Transparent"
-                    BorderThickness="0"
-                    Margin="0"
-                    Padding="0"
-                    HorizontalAlignment="Stretch"
-                    VerticalAlignment="Stretch">
-                <Grid RowDefinitions="Auto,*">
-                    <Border Grid.Row="0"
-                            Classes="mica-strong"
-                            CornerRadius="24,24,0,0"
-                            Padding="20,16">
-                        <Grid ColumnDefinitions="Auto,*,Auto">
-                            <Border Width="40"
-                                    Height="40"
-                                    CornerRadius="20"
-                                    Background="{DynamicResource AdaptiveAccentBrush}">
-                                <fi:FluentIcon Icon="Settings"
-                                               IconVariant="Regular"
-                                               Foreground="White"
-                                               FontSize="18"
-                                               HorizontalAlignment="Center"
-                                               VerticalAlignment="Center" />
-                            </Border>
-                            <StackPanel Grid.Column="1"
-                                        Margin="14,0,0,0"
-                                        Spacing="2"
-                                        VerticalAlignment="Center">
-                                <TextBlock x:Name="WindowTitleTextBlock"
-                                           FontSize="24"
+            <Grid x:Name="SettingsContentPanel"
+                  RowDefinitions="Auto,*"
+                  RowSpacing="18">
+                <Border Grid.Row="0"
+                        Classes="settings-shell-card"
+                        Padding="20,18">
+                    <Grid ColumnDefinitions="Auto,*,Auto"
+                          ColumnSpacing="18">
+                        <Border Width="52"
+                                Height="52"
+                                CornerRadius="18"
+                                Background="{DynamicResource AdaptiveAccentBrush}">
+                            <TextBlock Text="LMD"
+                                       FontSize="16"
+                                       FontWeight="Bold"
+                                       Foreground="White"
+                                       HorizontalAlignment="Center"
+                                       VerticalAlignment="Center" />
+                        </Border>
+
+                        <StackPanel Grid.Column="1"
+                                    Spacing="3"
+                                    VerticalAlignment="Center">
+                            <TextBlock x:Name="WindowTitleTextBlock"
+                                       FontSize="28"
+                                       FontWeight="SemiBold"
+                                       Text="Application Settings" />
+                            <TextBlock x:Name="WindowSubtitleTextBlock"
+                                       Classes="settings-shell-hint"
+                                       Text="LanMountainDesktop" />
+                        </StackPanel>
+
+                        <StackPanel Grid.Column="2"
+                                    Orientation="Horizontal"
+                                    Spacing="10"
+                                    VerticalAlignment="Center">
+                            <Border Classes="settings-shell-card"
+                                    Padding="12,8"
+                                    CornerRadius="18">
+                                <TextBlock x:Name="WindowVersionBadgeTextBlock"
+                                           FontSize="14"
                                            FontWeight="SemiBold"
+                                           Text="1.0.0" />
+                            </Border>
+                            <Border Classes="settings-shell-card"
+                                    Padding="12,8"
+                                    CornerRadius="18">
+                                <TextBlock x:Name="WindowCodeNameBadgeTextBlock"
+                                           Classes="settings-shell-hint"
+                                           Text="Administrate" />
+                            </Border>
+                        </StackPanel>
+                    </Grid>
+                </Border>
+
+                <Grid Grid.Row="1"
+                      ColumnDefinitions="300,20,*">
+                    <Border Grid.Column="0"
+                            Classes="settings-shell-card"
+                            Padding="18,18,18,16">
+                        <Grid RowDefinitions="Auto,*,Auto"
+                              RowSpacing="18">
+                            <StackPanel Spacing="6">
+                                <TextBlock x:Name="SettingsSidebarTitleTextBlock"
+                                           Classes="settings-shell-eyebrow"
                                            Text="Settings" />
-                                <TextBlock x:Name="WindowSubtitleTextBlock"
-                                           Foreground="{DynamicResource AdaptiveTextSecondaryBrush}"
-                                           Text="LanMountainDesktop preferences" />
+                                <TextBlock x:Name="SettingsSidebarHintTextBlock"
+                                           Classes="settings-shell-hint"
+                                           TextWrapping="Wrap"
+                                           Text="Choose a category to adjust application behavior and desktop appearance." />
                             </StackPanel>
-                            <Button Grid.Column="2"
-                                    Padding="10,8"
-                                    HorizontalAlignment="Right"
-                                    Click="OnCloseWindowClick">
-                                <StackPanel Orientation="Horizontal" Spacing="8">
-                                    <fi:FluentIcon Icon="Dismiss" IconVariant="Regular" />
-                                    <TextBlock Text="Close" VerticalAlignment="Center" />
+
+                            <ScrollViewer Grid.Row="1"
+                                          HorizontalScrollBarVisibility="Disabled"
+                                          VerticalScrollBarVisibility="Auto">
+                                <StackPanel Spacing="20">
+                                    <StackPanel Spacing="10">
+                                        <TextBlock x:Name="SettingsPrimaryGroupTextBlock"
+                                                   Classes="settings-shell-eyebrow"
+                                                   Text="Desktop" />
+                                        <StackPanel x:Name="SettingsPrimaryNavHost"
+                                                    Classes="settings-sidebar-host"
+                                                    Spacing="0" />
+                                    </StackPanel>
+
+                                    <Border Background="{DynamicResource SurfaceStrokeColorDefaultBrush}"
+                                            Height="1" />
+
+                                    <StackPanel Spacing="10">
+                                        <TextBlock x:Name="SettingsSecondaryGroupTextBlock"
+                                                   Classes="settings-shell-eyebrow"
+                                                   Text="System" />
+                                        <StackPanel x:Name="SettingsSecondaryNavHost"
+                                                    Classes="settings-sidebar-host"
+                                                    Spacing="0" />
+                                    </StackPanel>
+
+                                    <StackPanel x:Name="SettingsPluginNavSection"
+                                                IsVisible="False"
+                                                Spacing="10">
+                                        <Border Background="{DynamicResource SurfaceStrokeColorDefaultBrush}"
+                                                Height="1" />
+                                        <TextBlock x:Name="SettingsPluginGroupTextBlock"
+                                                   Classes="settings-shell-eyebrow"
+                                                   Text="Extensions" />
+                                        <StackPanel x:Name="SettingsPluginNavHost"
+                                                    Classes="settings-sidebar-host"
+                                                    Spacing="0" />
+                                    </StackPanel>
                                 </StackPanel>
-                            </Button>
+                            </ScrollViewer>
+
+                            <Border Grid.Row="2"
+                                    Classes="settings-shell-card"
+                                    Padding="14,12"
+                                    CornerRadius="22">
+                                <StackPanel Spacing="4">
+                                    <TextBlock Text="LanMountainDesktop"
+                                               FontWeight="SemiBold" />
+                                    <TextBlock x:Name="SettingsSidebarFooterTextBlock"
+                                               Classes="settings-shell-hint"
+                                               TextWrapping="Wrap"
+                                               Text="Tray-opened settings are managed in this standalone window." />
+                                </StackPanel>
+                            </Border>
                         </Grid>
                     </Border>
 
-                    <Border Grid.Row="1"
-                            Classes="mica-strong"
-                            CornerRadius="0,0,24,24"
-                            Padding="18">
-                        <ui:NavigationView x:Name="SettingsNavView"
-                                           PaneDisplayMode="Left"
-                                           IsSettingsVisible="False"
-                                           OpenPaneLength="240"
-                                           SelectionChanged="OnSettingsNavSelectionChanged">
-                            <ui:NavigationView.MenuItems>
-                                <ui:NavigationViewItem x:Name="SettingsNavWallpaperItem" Content="壁纸" Tag="Wallpaper">
-                                    <ui:NavigationViewItem.IconSource>
-                                        <ic:SymbolIconSource Symbol="Wallpaper" IconVariant="Regular" />
-                                    </ui:NavigationViewItem.IconSource>
-                                </ui:NavigationViewItem>
-                                <ui:NavigationViewItem x:Name="SettingsNavGridItem" Content="网格" Tag="Grid">
-                                    <ui:NavigationViewItem.IconSource>
-                                        <ic:SymbolIconSource Symbol="Grid" IconVariant="Regular" />
-                                    </ui:NavigationViewItem.IconSource>
-                                </ui:NavigationViewItem>
-                                <ui:NavigationViewItem x:Name="SettingsNavColorItem" Content="颜色" Tag="Color">
-                                    <ui:NavigationViewItem.IconSource>
-                                        <ic:SymbolIconSource Symbol="Color" IconVariant="Regular" />
-                                    </ui:NavigationViewItem.IconSource>
-                                </ui:NavigationViewItem>
-                                <ui:NavigationViewItem x:Name="SettingsNavStatusBarItem" Content="状态栏" Tag="StatusBar">
-                                    <ui:NavigationViewItem.IconSource>
-                                        <ic:SymbolIconSource Symbol="Status" IconVariant="Regular" />
-                                    </ui:NavigationViewItem.IconSource>
-                                </ui:NavigationViewItem>
-                                <ui:NavigationViewItem x:Name="SettingsNavWeatherItem" Content="天气" Tag="Weather">
-                                    <ui:NavigationViewItem.IconSource>
-                                        <ic:SymbolIconSource Symbol="WeatherSunny" IconVariant="Regular" />
-                                    </ui:NavigationViewItem.IconSource>
-                                </ui:NavigationViewItem>
-                                <ui:NavigationViewItem x:Name="SettingsNavRegionItem" Content="地区" Tag="Region">
-                                    <ui:NavigationViewItem.IconSource>
-                                        <ic:SymbolIconSource Symbol="Globe" IconVariant="Regular" />
-                                    </ui:NavigationViewItem.IconSource>
-                                </ui:NavigationViewItem>
-                                <ui:NavigationViewItem x:Name="SettingsNavUpdateItem" Content="更新" Tag="Update">
-                                    <ui:NavigationViewItem.IconSource>
-                                        <ic:SymbolIconSource Symbol="ArrowSync" IconVariant="Regular" />
-                                    </ui:NavigationViewItem.IconSource>
-                                </ui:NavigationViewItem>
-                                <ui:NavigationViewItem x:Name="SettingsNavAboutItem" Content="关于" Tag="About">
-                                    <ui:NavigationViewItem.IconSource>
-                                        <ic:SymbolIconSource Symbol="Info" IconVariant="Regular" />
-                                    </ui:NavigationViewItem.IconSource>
-                                </ui:NavigationViewItem>
-                                <ui:NavigationViewItem x:Name="SettingsNavLauncherItem" Content="应用启动台" Tag="Launcher">
-                                    <ui:NavigationViewItem.IconSource>
-                                        <ic:SymbolIconSource Symbol="Apps" IconVariant="Regular" />
-                                    </ui:NavigationViewItem.IconSource>
-                                </ui:NavigationViewItem>
-                                <ui:NavigationViewItem x:Name="SettingsNavPluginsItem" Content="插件" Tag="Plugins">
-                                    <ui:NavigationViewItem.IconSource>
-                                        <ic:SymbolIconSource Symbol="PuzzlePiece" IconVariant="Regular" />
-                                    </ui:NavigationViewItem.IconSource>
-                                </ui:NavigationViewItem>
-                            </ui:NavigationView.MenuItems>
-
+                    <Grid Grid.Column="2"
+                          RowDefinitions="*,Auto"
+                          RowSpacing="14">
+                        <Border Grid.Row="0"
+                                Classes="settings-shell-card"
+                                Padding="0">
                             <ScrollViewer x:Name="SettingsContentScrollViewer"
-                                          Padding="0,0,16,0"
+                                          Padding="30,28,30,30"
                                           HorizontalScrollBarVisibility="Disabled"
                                           VerticalScrollBarVisibility="Auto">
-                                <Grid>
+                                <Grid x:Name="SettingsContentPagesHost">
                                     <pages:WallpaperSettingsPage x:Name="WallpaperSettingsPanel" IsVisible="True" />
                                     <pages:GridSettingsPage x:Name="GridSettingsPanel" IsVisible="False" />
                                     <pages:ColorSettingsPage x:Name="ColorSettingsPanel" IsVisible="False" />
@@ -152,12 +253,59 @@
                                     <pages:LauncherSettingsPage x:Name="LauncherSettingsPanel" IsVisible="False" />
                                     <pages:AboutSettingsPage x:Name="AboutSettingsPanel" IsVisible="False" />
                                     <pages:PluginSettingsPage x:Name="PluginSettingsPanel" IsVisible="False" />
+                                    <pages:PluginMarketSettingsPage x:Name="PluginMarketSettingsPanel" IsVisible="False" />
                                 </Grid>
                             </ScrollViewer>
-                        </ui:NavigationView>
-                    </Border>
+                        </Border>
+
+                        <Border x:Name="PendingRestartDock"
+                                Grid.Row="1"
+                                IsVisible="False"
+                                Classes="settings-shell-card"
+                                Padding="16,14"
+                                CornerRadius="24">
+                            <Grid ColumnDefinitions="Auto,*,Auto"
+                                  ColumnSpacing="14">
+                                <Border Width="38"
+                                        Height="38"
+                                        CornerRadius="14"
+                                        Background="{DynamicResource AdaptiveAccentBrush}">
+                                    <fi:FluentIcon Icon="ArrowSync"
+                                                   IconVariant="Regular"
+                                                   FontSize="18"
+                                                   Foreground="White"
+                                                   HorizontalAlignment="Center"
+                                                   VerticalAlignment="Center" />
+                                </Border>
+                                <StackPanel Grid.Column="1"
+                                            Spacing="2"
+                                            VerticalAlignment="Center">
+                                    <TextBlock x:Name="PendingRestartDockTitleTextBlock"
+                                               FontSize="14"
+                                               FontWeight="SemiBold"
+                                               Text="Restart required" />
+                                    <TextBlock x:Name="PendingRestartDockDescriptionTextBlock"
+                                               TextWrapping="Wrap"
+                                               Foreground="{DynamicResource AdaptiveTextSecondaryBrush}"
+                                               Text="Your changes will apply after restarting the app." />
+                                </StackPanel>
+                                <Button x:Name="PendingRestartDockButton"
+                                        Grid.Column="2"
+                                        Padding="16,8"
+                                        Click="OnPendingRestartDockButtonClick">
+                                    <StackPanel Orientation="Horizontal" Spacing="8">
+                                        <fi:FluentIcon Icon="ArrowSync"
+                                                       IconVariant="Regular" />
+                                        <TextBlock x:Name="PendingRestartDockButtonTextBlock"
+                                                   VerticalAlignment="Center"
+                                                   Text="Restart app" />
+                                    </StackPanel>
+                                </Button>
+                            </Grid>
+                        </Border>
+                    </Grid>
                 </Grid>
-            </Border>
+            </Grid>
         </Grid>
 
         <Grid IsVisible="False">

LanMountainDesktop/Views/SettingsWindow.axaml.cs

@@ -93,7 +93,7 @@ public partial class SettingsWindow : Window
     private readonly WindowsStartupService _windowsStartupService = new();
     private readonly GitHubReleaseUpdateService _releaseUpdateService = new("wwiinnddyy", "LanMountainDesktop");
     private readonly IWeatherDataService _weatherDataService = new XiaomiWeatherService();
-    private readonly ComponentRegistry _componentRegistry = ComponentRegistry.CreateDefault();
+    private readonly ComponentRegistry _componentRegistry;
     private readonly WindowsStartMenuService _windowsStartMenuService = new();
     private readonly LinuxDesktopEntryService _linuxDesktopEntryService = new();
     private readonly FluentAvaloniaTheme? _fluentAvaloniaTheme;
@@ -102,13 +102,14 @@ public partial class SettingsWindow : Window
     private readonly HashSet<string> _hiddenLauncherFolderPaths = new(StringComparer.OrdinalIgnoreCase);
     private readonly HashSet<string> _hiddenLauncherAppPaths = new(StringComparer.OrdinalIgnoreCase);
     private readonly Stack<StartMenuFolderNode> _launcherFolderStack = [];
+    private readonly Dictionary<string, Button> _settingsNavItems = new(StringComparer.OrdinalIgnoreCase);
+    private readonly Dictionary<string, Button> _pluginSettingsNavItems = new(StringComparer.OrdinalIgnoreCase);
 
     private StartMenuFolderNode _startMenuRoot = new("All Apps", string.Empty);
     private byte[]? _launcherFolderIconPngBytes;
     private Bitmap? _launcherFolderIconBitmap;
 
     private int _targetShortSideCells;
-    private bool _isSettingsOpen = true;
     private bool _isNightMode;
     private bool _enableDynamicTaskbarActions;
     private bool _suppressThemeToggleEvents;
@@ -116,10 +117,10 @@ public partial class SettingsWindow : Window
     private bool _suppressTimeZoneSelectionEvents;
     private bool _suppressWeatherLocationEvents;
     private bool _suppressSettingsPersistence;
-    private bool _suppressGridSpacingEvents;
     private bool _suppressGridInsetEvents;
     private bool _suppressStatusBarSpacingEvents;
     private bool _suppressAutoStartToggleEvents;
+    private bool _suppressAppRenderModeSelectionEvents;
     private bool _isUpdatingWallpaperPreviewLayout;
     private IBrush? _defaultDesktopBackground;
     private Bitmap? _wallpaperBitmap;
@@ -134,12 +135,12 @@ public partial class SettingsWindow : Window
     private IReadOnlyList<Color> _monetColors = Array.Empty<Color>();
     private Color _selectedThemeColor = Color.Parse("#FF3B82F6");
     private double _currentDesktopCellSize;
-    private double _currentDesktopCellGap;
-    private double _currentDesktopEdgeInset;
     private string _gridSpacingPreset = "Relaxed";
     private string _statusBarSpacingMode = "Relaxed";
     private int _statusBarCustomSpacingPercent = 12;
     private int _desktopEdgeInsetPercent = DefaultEdgeInsetPercent;
+    private string _selectedAppRenderMode = AppRenderingModeHelper.Default;
+    private string _runningAppRenderMode = AppRenderingModeHelper.Default;
     private string _taskbarLayoutMode = TaskbarLayoutBottomFullRowMacStyle;
     private string _languageCode = "zh-CN";
     private WeatherLocationMode _weatherLocationMode = WeatherLocationMode.CitySearch;
@@ -153,14 +154,19 @@ public partial class SettingsWindow : Window
     private bool _weatherNoTlsRequests;
     private bool _autoStartWithWindows;
     private string _weatherSearchKeyword = string.Empty;
+    private string _selectedSettingsTabTag = "Wallpaper";
     private bool _isWeatherSearchInProgress;
     private bool _isWeatherPreviewInProgress;
 
     public SettingsWindow()
     {
+        _componentRegistry = DesktopComponentRegistryFactory.Create((Application.Current as App)?.PluginRuntimeService);
         InitializeComponent();
+        InitializeSettingsNavigation();
+        InitializePluginSettingsNavigation();
         _fluentAvaloniaTheme = Application.Current?.Styles.OfType<FluentAvaloniaTheme>().FirstOrDefault();
         RequestedThemeVariant = Application.Current?.RequestedThemeVariant ?? ThemeVariant.Default;
+        PendingRestartStateService.StateChanged += OnPendingRestartStateChanged;
         HookEvents();
     }
 
@@ -178,8 +184,7 @@ public partial class SettingsWindow : Window
         GridSpacingPresetComboBox.SelectionChanged += OnGridSpacingPresetSelectionChanged;
         GridEdgeInsetSlider.ValueChanged += OnGridEdgeInsetSliderChanged;
         ApplyGridButton.Click += OnApplyGridSizeClick;
-        NightModeToggleSwitch.Checked += OnNightModeChecked;
-        NightModeToggleSwitch.Unchecked += OnNightModeUnchecked;
+        NightModeToggleSwitch.IsCheckedChanged += OnNightModeIsCheckedChanged;
         RecommendedColorButton1.Click += OnRecommendedColorClick;
         RecommendedColorButton2.Click += OnRecommendedColorClick;
         RecommendedColorButton3.Click += OnRecommendedColorClick;
@@ -193,36 +198,64 @@ public partial class SettingsWindow : Window
         MonetColorButton4.Click += OnMonetColorClick;
         MonetColorButton5.Click += OnMonetColorClick;
         MonetColorButton6.Click += OnMonetColorClick;
-        StatusBarClockToggleSwitch.Checked += OnStatusBarClockChecked;
-        StatusBarClockToggleSwitch.Unchecked += OnStatusBarClockUnchecked;
-        ClockFormatHMSSRadio.Checked += OnClockFormatChanged;
-        ClockFormatHMRadio.Checked += OnClockFormatChanged;
+        StatusBarClockToggleSwitch.IsCheckedChanged += OnStatusBarClockIsCheckedChanged;
+        ClockFormatHMSSRadio.IsCheckedChanged += OnClockFormatChanged;
+        ClockFormatHMRadio.IsCheckedChanged += OnClockFormatChanged;
         StatusBarSpacingModeComboBox.SelectionChanged += OnStatusBarSpacingModeChanged;
         StatusBarSpacingSlider.ValueChanged += OnStatusBarSpacingSliderChanged;
         WeatherPreviewButton.Click += OnTestWeatherRequestClick;
         WeatherLocationModeComboBox.SelectionChanged += OnWeatherLocationModeSelectionChanged;
         WeatherLocationModeChipListBox.SelectionChanged += OnWeatherLocationModeChipSelectionChanged;
-        WeatherAutoRefreshToggleSwitch.Checked += OnWeatherAutoRefreshToggled;
-        WeatherAutoRefreshToggleSwitch.Unchecked += OnWeatherAutoRefreshToggled;
+        WeatherAutoRefreshToggleSwitch.IsCheckedChanged += OnWeatherAutoRefreshToggled;
         WeatherSearchButton.Click += OnSearchWeatherCityClick;
         WeatherApplyCityButton.Click += OnApplyWeatherCitySelectionClick;
         WeatherApplyCoordinatesButton.Click += OnApplyWeatherCoordinatesClick;
         WeatherExcludedAlertsTextBox.LostFocus += OnWeatherExcludedAlertsLostFocus;
         WeatherIconPackComboBox.SelectionChanged += OnWeatherIconPackSelectionChanged;
-        WeatherNoTlsToggleSwitch.Checked += OnWeatherNoTlsToggled;
-        WeatherNoTlsToggleSwitch.Unchecked += OnWeatherNoTlsToggled;
+        WeatherNoTlsToggleSwitch.IsCheckedChanged += OnWeatherNoTlsToggled;
         LanguageComboBox.SelectionChanged += OnLanguageSelectionChanged;
         TimeZoneComboBox.SelectionChanged += OnTimeZoneSelectionChanged;
-        AutoCheckUpdatesToggleSwitch.Checked += OnAutoCheckUpdatesToggled;
-        AutoCheckUpdatesToggleSwitch.Unchecked += OnAutoCheckUpdatesToggled;
+        AutoCheckUpdatesToggleSwitch.IsCheckedChanged += OnAutoCheckUpdatesToggled;
         UpdateChannelChipListBox.SelectionChanged += OnUpdateChannelSelectionChanged;
         CheckForUpdatesButton.Click += OnCheckForUpdatesClick;
         DownloadAndInstallUpdateButton.Click += OnDownloadAndInstallUpdateClick;
-        AutoStartWithWindowsToggleSwitch.Checked += OnAutoStartWithWindowsToggled;
-        AutoStartWithWindowsToggleSwitch.Unchecked += OnAutoStartWithWindowsToggled;
+        AutoStartWithWindowsToggleSwitch.IsCheckedChanged += OnAutoStartWithWindowsToggled;
+        AppRenderModeComboBox.SelectionChanged += OnAppRenderModeSelectionChanged;
         Opened += OnWindowOpened;
     }
 
+    private void OnNightModeIsCheckedChanged(object? sender, RoutedEventArgs e)
+    {
+        if (sender is not ToggleButton toggleButton)
+        {
+            return;
+        }
+
+        if (toggleButton.IsChecked == true)
+        {
+            OnNightModeChecked(sender, e);
+            return;
+        }
+
+        OnNightModeUnchecked(sender, e);
+    }
+
+    private void OnStatusBarClockIsCheckedChanged(object? sender, RoutedEventArgs e)
+    {
+        if (sender is not ToggleButton toggleButton)
+        {
+            return;
+        }
+
+        if (toggleButton.IsChecked == true)
+        {
+            OnStatusBarClockChecked(sender, e);
+            return;
+        }
+
+        OnStatusBarClockUnchecked(sender, e);
+    }
+
     private void OnWindowOpened(object? sender, EventArgs e)
     {
         Opened -= OnWindowOpened;
@@ -258,6 +291,7 @@ public partial class SettingsWindow : Window
         InitializeLocalization(snapshot.LanguageCode);
         InitializeWeatherSettings(snapshot);
         InitializeAutoStartWithWindowsSetting(snapshot);
+        InitializeAppRenderModeSetting(snapshot);
         InitializeUpdateSettings(snapshot);
         InitializeLauncherVisibilitySettings(launcherSnapshot);
         InitializeSettingsIcons();
@@ -275,9 +309,8 @@ public partial class SettingsWindow : Window
         EnsureSelectedThemeColor();
         UpdateThemeColorSelectionState();
         ThemeColorStatusTextBlock.Text = Lf("settings.color.theme_ready_format", "Theme color ready: {0}.", _selectedThemeColor);
-        WindowTitleTextBlock.Text = L("settings.title", "Settings");
-        WindowSubtitleTextBlock.Text = L("settings.footer", "LanMountainDesktop Settings");
         _defaultDesktopBackground = DesktopWallpaperLayer.Background;
+        RestoreSettingsTabSelection(snapshot);
         UpdateSettingsTabContent();
         UpdateWallpaperDisplay();
         UpdateWallpaperPreviewLayout();

LanMountainDesktop/installer/ChineseSimplified.isl

@@ -0,0 +1,418 @@
+; *** Inno Setup version 6.5.0+ Chinese Simplified messages ***
+;
+; To download user-contributed translations of this file, go to:
+;   https://jrsoftware.org/files/istrans/
+;
+; Note: When translating this text, do not add periods (.) to the end of
+; messages that didn't have them already, because on those messages Inno
+; Setup adds the periods automatically (appending a period would result in
+; two periods being displayed).
+;
+; Maintained by Zhenghan Yang
+; Email: 847320916@QQ.com
+; Translation based on network resource
+; The latest Translation is on https://github.com/kira-96/Inno-Setup-Chinese-Simplified-Translation
+;
+
+[LangOptions]
+; The following three entries are very important. Be sure to read and 
+; understand the '[LangOptions] section' topic in the help file.
+LanguageName=简体中文
+; If Language Name display incorrect, uncomment next line
+; LanguageName=<7B80><4F53><4E2D><6587>
+; About LanguageID, to reference link:
+; https://docs.microsoft.com/en-us/openspecs/windows_protocols/ms-lcid/a9eac961-e77d-41a6-90a5-ce1a8b0cdb9c
+LanguageID=$0804
+; About CodePage, to reference link:
+; https://docs.microsoft.com/en-us/windows/win32/intl/code-page-identifiers
+LanguageCodePage=936
+; If the language you are translating to requires special font faces or
+; sizes, uncomment any of the following entries and change them accordingly.
+;DialogFontName=
+;DialogFontSize=9
+;DialogFontBaseScaleWidth=7
+;DialogFontBaseScaleHeight=15
+;WelcomeFontName=Segoe UI
+;WelcomeFontSize=14
+
+[Messages]
+
+; *** 应用程序标题
+SetupAppTitle=安装
+SetupWindowTitle=安装 - %1
+UninstallAppTitle=卸载
+UninstallAppFullTitle=%1 卸载
+
+; *** Misc. common
+InformationTitle=信息
+ConfirmTitle=确认
+ErrorTitle=错误
+
+; *** SetupLdr messages
+SetupLdrStartupMessage=现在将安装 %1。您想要继续吗？
+LdrCannotCreateTemp=无法创建临时文件。安装程序已中止
+LdrCannotExecTemp=无法执行临时目录中的文件。安装程序已中止
+HelpTextNote=
+
+; *** 启动错误消息
+LastErrorMessage=%1。%n%n错误 %2: %3
+SetupFileMissing=安装目录中缺少文件 %1。请修正这个问题或者获取程序的新副本。
+SetupFileCorrupt=安装文件已损坏。请获取程序的新副本。
+SetupFileCorruptOrWrongVer=安装文件已损坏，或是与这个安装程序的版本不兼容。请修正这个问题或获取新的程序副本。
+InvalidParameter=无效的命令行参数：%n%n%1
+SetupAlreadyRunning=安装程序正在运行。
+WindowsVersionNotSupported=此程序不支持当前计算机运行的 Windows 版本。
+WindowsServicePackRequired=此程序需要 %1 服务包 %2 或更高版本。
+NotOnThisPlatform=此程序不能在 %1 上运行。
+OnlyOnThisPlatform=此程序只能在 %1 上运行。
+OnlyOnTheseArchitectures=此程序只能安装到为下列处理器架构设计的 Windows 版本中：%n%n%1
+WinVersionTooLowError=此程序需要 %1 版本 %2 或更高。
+WinVersionTooHighError=此程序不能安装于 %1 版本 %2 或更高。
+AdminPrivilegesRequired=在安装此程序时您必须以管理员身份登录。
+PowerUserPrivilegesRequired=在安装此程序时您必须以管理员身份或有权限的用户组身份登录。
+SetupAppRunningError=安装程序发现 %1 当前正在运行。%n%n请先关闭正在运行的程序，然后点击“确定”继续，或点击“取消”退出。
+UninstallAppRunningError=卸载程序发现 %1 当前正在运行。%n%n请先关闭正在运行的程序，然后点击“确定”继续，或点击“取消”退出。
+
+; *** 启动问题
+PrivilegesRequiredOverrideTitle=选择安装程序模式
+PrivilegesRequiredOverrideInstruction=选择安装模式
+PrivilegesRequiredOverrideText1=%1 可以为所有用户安装(需要管理员权限)，或仅为您安装。
+PrivilegesRequiredOverrideText2=%1 可以仅为您安装，或为所有用户安装(需要管理员权限)。
+PrivilegesRequiredOverrideAllUsers=为所有用户安装(&A)
+PrivilegesRequiredOverrideAllUsersRecommended=为所有用户安装(&A) (建议选项)
+PrivilegesRequiredOverrideCurrentUser=仅为我安装(&M)
+PrivilegesRequiredOverrideCurrentUserRecommended=仅为我安装(&M) (建议选项)
+
+; *** 其他错误
+ErrorCreatingDir=安装程序无法创建目录“%1”
+ErrorTooManyFilesInDir=无法在目录“%1”中创建文件，因为里面包含太多文件
+
+; *** 安装程序公共消息
+ExitSetupTitle=退出安装程序
+ExitSetupMessage=安装程序尚未完成。如果现在退出，将不会安装该程序。%n%n您之后可以再次运行安装程序完成安装。%n%n现在退出安装程序吗？
+AboutSetupMenuItem=关于安装程序(&A)...
+AboutSetupTitle=关于安装程序
+AboutSetupMessage=%1 版本 %2%n%3%n%n%1 主页：%n%4
+AboutSetupNote=
+TranslatorNote=简体中文翻译由Kira(847320916@qq.com)维护。项目地址：https://github.com/kira-96/Inno-Setup-Chinese-Simplified-Translation
+
+; *** 按钮
+ButtonBack=< 上一步(&B)
+ButtonNext=下一步(&N) >
+ButtonInstall=安装(&I)
+ButtonOK=确定
+ButtonCancel=取消
+ButtonYes=是(&Y)
+ButtonYesToAll=全是(&A)
+ButtonNo=否(&N)
+ButtonNoToAll=全否(&O)
+ButtonFinish=完成(&F)
+ButtonBrowse=浏览(&B)...
+ButtonWizardBrowse=浏览(&R)...
+ButtonNewFolder=新建文件夹(&M)
+
+; *** “选择语言”对话框消息
+SelectLanguageTitle=选择安装语言
+SelectLanguageLabel=选择安装时使用的语言。
+
+; *** 公共向导文字
+ClickNext=点击“下一步”继续，或点击“取消”退出安装程序。
+BeveledLabel=
+BrowseDialogTitle=浏览文件夹
+BrowseDialogLabel=在下面的列表中选择一个文件夹，然后点击“确定”。
+NewFolderName=新建文件夹
+
+; *** “欢迎”向导页
+WelcomeLabel1=欢迎使用 [name] 安装向导
+WelcomeLabel2=现在将安装 [name/ver] 到您的电脑中。%n%n建议您在继续安装前关闭所有其他应用程序。
+
+; *** “密码”向导页
+WizardPassword=密码
+PasswordLabel1=这个安装程序有密码保护。
+PasswordLabel3=请输入密码，然后点击“下一步”继续。密码区分大小写。
+PasswordEditLabel=密码(&P)：
+IncorrectPassword=您输入的密码不正确，请重新输入。
+
+; *** “许可协议”向导页
+WizardLicense=许可协议
+LicenseLabel=请在继续安装前阅读以下重要信息。
+LicenseLabel3=请仔细阅读下列许可协议。在继续安装前您必须同意这些协议条款。
+LicenseAccepted=我同意此协议(&A)
+LicenseNotAccepted=我不同意此协议(&D)
+
+; *** “信息”向导页
+WizardInfoBefore=信息
+InfoBeforeLabel=请在继续安装前阅读以下重要信息。
+InfoBeforeClickLabel=准备好继续安装后，点击“下一步”。
+WizardInfoAfter=信息
+InfoAfterLabel=请在继续安装前阅读以下重要信息。
+InfoAfterClickLabel=准备好继续安装后，点击“下一步”。
+
+; *** “用户信息”向导页
+WizardUserInfo=用户信息
+UserInfoDesc=请输入您的信息。
+UserInfoName=用户名(&U)：
+UserInfoOrg=组织(&O)：
+UserInfoSerial=序列号(&S)：
+UserInfoNameRequired=您必须输入用户名。
+
+; *** “选择目标目录”向导页
+WizardSelectDir=选择目标位置
+SelectDirDesc=您想将 [name] 安装在哪里？
+SelectDirLabel3=安装程序将安装 [name] 到下面的文件夹中。
+SelectDirBrowseLabel=点击“下一步”继续。如果您想选择其他文件夹，点击“浏览”。
+DiskSpaceGBLabel=至少需要有 [gb] GB 的可用磁盘空间。
+DiskSpaceMBLabel=至少需要有 [mb] MB 的可用磁盘空间。
+CannotInstallToNetworkDrive=安装程序无法安装到一个网络驱动器。
+CannotInstallToUNCPath=安装程序无法安装到一个 UNC 路径。
+InvalidPath=您必须输入一个带驱动器卷标的完整路径，例如：%n%nC:\APP%n%n或UNC路径：%n%n\\server\share
+InvalidDrive=您选定的驱动器或 UNC 共享不存在或不能访问。请选择其他位置。
+DiskSpaceWarningTitle=磁盘空间不足
+DiskSpaceWarning=安装程序至少需要 %1 KB 的可用空间才能安装，但选定驱动器只有 %2 KB 的可用空间。%n%n您一定要继续吗？
+DirNameTooLong=文件夹名称或路径太长。
+InvalidDirName=文件夹名称无效。
+BadDirName32=文件夹名称不能包含下列任何字符：%n%n%1
+DirExistsTitle=文件夹已存在
+DirExists=文件夹：%n%n%1%n%n已经存在。您一定要安装到这个文件夹中吗？
+DirDoesntExistTitle=文件夹不存在
+DirDoesntExist=文件夹：%n%n%1%n%n不存在。您想要创建此文件夹吗？
+
+; *** “选择组件”向导页
+WizardSelectComponents=选择组件
+SelectComponentsDesc=您想安装哪些程序组件？
+SelectComponentsLabel2=选中您想安装的组件；取消您不想安装的组件。然后点击“下一步”继续。
+FullInstallation=完全安装
+; if possible don't translate 'Compact' as 'Minimal' (I mean 'Minimal' in your language)
+CompactInstallation=简洁安装
+CustomInstallation=自定义安装
+NoUninstallWarningTitle=组件已存在
+NoUninstallWarning=安装程序检测到下列组件已安装在您的电脑中：%n%n%1%n%n取消选中这些组件不会卸载它们。%n%n确定要继续吗？
+ComponentSize1=%1 KB
+ComponentSize2=%1 MB
+ComponentsDiskSpaceGBLabel=当前选择的组件需要至少 [gb] GB 的磁盘空间。
+ComponentsDiskSpaceMBLabel=当前选择的组件需要至少 [mb] MB 的磁盘空间。
+
+; *** “选择附加任务”向导页
+WizardSelectTasks=选择附加任务
+SelectTasksDesc=您想要安装程序执行哪些附加任务？
+SelectTasksLabel2=选择您想要安装程序在安装 [name] 时执行的附加任务，然后点击“下一步”。
+
+; *** “选择开始菜单文件夹”向导页
+WizardSelectProgramGroup=选择开始菜单文件夹
+SelectStartMenuFolderDesc=安装程序应该在哪里放置程序的快捷方式？
+SelectStartMenuFolderLabel3=安装程序将在下列“开始”菜单文件夹中创建程序的快捷方式。
+SelectStartMenuFolderBrowseLabel=点击“下一步”继续。如果您想选择其他文件夹，点击“浏览”。
+MustEnterGroupName=您必须输入一个文件夹名。
+GroupNameTooLong=文件夹名或路径太长。
+InvalidGroupName=无效的文件夹名字。
+BadGroupName=文件夹名不能包含下列任何字符：%n%n%1
+NoProgramGroupCheck2=不创建开始菜单文件夹(&D)
+
+; *** “准备安装”向导页
+WizardReady=准备安装
+ReadyLabel1=安装程序准备就绪，现在可以开始安装 [name] 到您的电脑。
+ReadyLabel2a=点击“安装”继续此安装程序。如果您想重新考虑或修改任何设置，点击“上一步”。
+ReadyLabel2b=点击“安装”继续此安装程序。
+ReadyMemoUserInfo=用户信息：
+ReadyMemoDir=目标位置：
+ReadyMemoType=安装类型：
+ReadyMemoComponents=已选择组件：
+ReadyMemoGroup=开始菜单文件夹：
+ReadyMemoTasks=附加任务：
+
+; *** TExtractionWizardPage 向导页面与 ExtractArchive
+ExtractingLabel=正在解压文件...
+ButtonStopExtraction=停止解压(&S)
+StopExtraction=您确定要停止解压吗？
+ErrorExtractionAborted=解压已中止
+ErrorExtractionFailed=解压失败：%1
+
+; *** 压缩文件解压失败详情
+ArchiveIncorrectPassword=压缩文件密码不正确
+ArchiveIsCorrupted=压缩文件已损坏
+ArchiveUnsupportedFormat=不支持的压缩文件格式
+
+; *** TDownloadWizardPage 向导页面和 DownloadTemporaryFile
+DownloadingLabel2=正在下载文件...
+ButtonStopDownload=停止下载(&S)
+StopDownload=您确定要停止下载吗？
+ErrorDownloadAborted=下载已中止
+ErrorDownloadFailed=下载失败：%1 %2
+ErrorDownloadSizeFailed=获取下载大小失败：%1 %2
+ErrorProgress=无效的进度：%1 / %2
+ErrorFileSize=文件大小错误：预期 %1，实际 %2
+
+; *** “正在准备安装”向导页
+WizardPreparing=正在准备安装
+PreparingDesc=安装程序正在准备安装 [name] 到您的电脑。
+PreviousInstallNotCompleted=先前的程序安装或卸载未完成，您需要重启您的电脑以完成。%n%n在重启电脑后，再次运行安装程序以完成 [name] 的安装。
+CannotContinue=安装程序不能继续。请点击“取消”退出。
+ApplicationsFound=以下应用程序正在使用将由安装程序更新的文件。建议您允许安装程序自动关闭这些应用程序。
+ApplicationsFound2=以下应用程序正在使用将由安装程序更新的文件。建议您允许安装程序自动关闭这些应用程序。安装完成后，安装程序将尝试重新启动这些应用程序。
+CloseApplications=自动关闭应用程序(&A)
+DontCloseApplications=不要关闭应用程序(&D)
+ErrorCloseApplications=安装程序无法自动关闭所有应用程序。建议您在继续之前，关闭所有在使用需要由安装程序更新的文件的应用程序。
+PrepareToInstallNeedsRestart=安装程序必须重启您的计算机。计算机重启后，请再次运行安装程序以完成 [name] 的安装。%n%n是否立即重新启动？
+
+; *** “正在安装”向导页
+WizardInstalling=正在安装
+InstallingLabel=安装程序正在安装 [name] 到您的电脑，请稍候。
+
+; *** “安装完成”向导页
+FinishedHeadingLabel=[name] 安装完成
+FinishedLabelNoIcons=安装程序已在您的电脑中安装了 [name]。
+FinishedLabel=安装程序已在您的电脑中安装了 [name]。您可以通过已安装的快捷方式运行此应用程序。
+ClickFinish=点击“完成”退出安装程序。
+FinishedRestartLabel=为完成 [name] 的安装，安装程序必须重新启动您的电脑。要立即重启吗？
+FinishedRestartMessage=为完成 [name] 的安装，安装程序必须重新启动您的电脑。%n%n要立即重启吗？
+ShowReadmeCheck=是，我想查阅自述文件
+YesRadio=是，立即重启电脑(&Y)
+NoRadio=否，稍后重启电脑(&N)
+; used for example as 'Run MyProg.exe'
+RunEntryExec=运行 %1
+; used for example as 'View Readme.txt'
+RunEntryShellExec=查阅 %1
+
+; *** “安装程序需要下一张磁盘”提示
+ChangeDiskTitle=安装程序需要下一张磁盘
+SelectDiskLabel2=请插入磁盘 %1 并点击“确定”。%n%n如果这个磁盘中的文件可以在下列文件夹之外的文件夹中找到，请输入正确的路径或点击“浏览”。
+PathLabel=路径(&P)：
+FileNotInDir2=“%2”中找不到文件“%1”。请插入正确的磁盘或选择其他文件夹。
+SelectDirectoryLabel=请指定下一张磁盘的位置。
+
+; *** 安装阶段消息
+SetupAborted=安装程序未完成安装。%n%n请修正这个问题并重新运行安装程序。
+AbortRetryIgnoreSelectAction=选择操作
+AbortRetryIgnoreRetry=重试(&T)
+AbortRetryIgnoreIgnore=忽略错误并继续(&I)
+AbortRetryIgnoreCancel=关闭安装程序
+RetryCancelSelectAction=选择操作
+RetryCancelRetry=重试(&T)
+RetryCancelCancel=取消(&C)
+
+; *** 安装状态消息
+StatusClosingApplications=正在关闭应用程序...
+StatusCreateDirs=正在创建目录...
+StatusExtractFiles=正在提取文件...
+StatusDownloadFiles=正在下载文件...
+StatusCreateIcons=正在创建快捷方式...
+StatusCreateIniEntries=正在创建 INI 条目...
+StatusCreateRegistryEntries=正在创建注册表条目...
+StatusRegisterFiles=正在注册文件...
+StatusSavingUninstall=正在保存卸载信息...
+StatusRunProgram=正在完成安装...
+StatusRestartingApplications=正在重启应用程序...
+StatusRollback=正在撤销更改...
+
+; *** 其他错误
+ErrorInternal2=内部错误：%1
+ErrorFunctionFailedNoCode=%1 失败
+ErrorFunctionFailed=%1 失败；错误代码 %2
+ErrorFunctionFailedWithMessage=%1 失败；错误代码 %2.%n%3
+ErrorExecutingProgram=无法执行文件：%n%1
+
+; *** 注册表错误
+ErrorRegOpenKey=打开注册表项时出错：%n%1\%2
+ErrorRegCreateKey=创建注册表项时出错：%n%1\%2
+ErrorRegWriteKey=写入注册表项时出错：%n%1\%2
+
+; *** INI 错误
+ErrorIniEntry=在文件“%1”中创建 INI 条目时出错。
+
+; *** 文件复制错误
+FileAbortRetryIgnoreSkipNotRecommended=跳过此文件(&S) (不推荐)
+FileAbortRetryIgnoreIgnoreNotRecommended=忽略错误并继续(&I) (不推荐)
+SourceIsCorrupted=源文件已损坏
+SourceDoesntExist=源文件“%1”不存在
+SourceVerificationFailed=源文件验证失败: %1
+VerificationSignatureDoesntExist=签名文件“%1”不存在
+VerificationSignatureInvalid=签名文件“%1”无效
+VerificationKeyNotFound=签名文件“%1”使用了未知密钥
+VerificationFileNameIncorrect=文件名不正确
+VerificationFileTagIncorrect=文件标签不正确
+VerificationFileSizeIncorrect=文件大小不正确
+VerificationFileHashIncorrect=文件哈希值不正确
+ExistingFileReadOnly2=无法替换现有文件，它是只读的。
+ExistingFileReadOnlyRetry=移除只读属性并重试(&R)
+ExistingFileReadOnlyKeepExisting=保留现有文件(&K)
+ErrorReadingExistingDest=尝试读取现有文件时出错：
+FileExistsSelectAction=选择操作
+FileExists2=文件已经存在。
+FileExistsOverwriteExisting=覆盖已存在的文件(&O)
+FileExistsKeepExisting=保留现有的文件(&K)
+FileExistsOverwriteOrKeepAll=为所有冲突文件执行此操作(&D)
+ExistingFileNewerSelectAction=选择操作
+ExistingFileNewer2=现有的文件比安装程序将要安装的文件还要新。
+ExistingFileNewerOverwriteExisting=覆盖已存在的文件(&O)
+ExistingFileNewerKeepExisting=保留现有的文件(&K) (推荐)
+ExistingFileNewerOverwriteOrKeepAll=为所有冲突文件执行此操作(&D)
+ErrorChangingAttr=尝试更改下列现有文件的属性时出错：
+ErrorCreatingTemp=尝试在目标目录创建文件时出错：
+ErrorReadingSource=尝试读取下列源文件时出错：
+ErrorCopying=尝试复制下列文件时出错：
+ErrorDownloading=下载文件时出错：
+ErrorExtracting=解压压缩文件时出错：
+ErrorReplacingExistingFile=尝试替换现有文件时出错：
+ErrorRestartReplace=重启并替换失败：
+ErrorRenamingTemp=尝试重命名下列目标目录中的一个文件时出错：
+ErrorRegisterServer=无法注册 DLL/OCX：%1
+ErrorRegSvr32Failed=RegSvr32 失败；退出代码 %1
+ErrorRegisterTypeLib=无法注册类库：%1
+
+; *** 卸载显示名字标记
+; used for example as 'My Program (32-bit)'
+UninstallDisplayNameMark=%1 (%2)
+; used for example as 'My Program (32-bit, All users)'
+UninstallDisplayNameMarks=%1 (%2, %3)
+UninstallDisplayNameMark32Bit=32 位
+UninstallDisplayNameMark64Bit=64 位
+UninstallDisplayNameMarkAllUsers=所有用户
+UninstallDisplayNameMarkCurrentUser=当前用户
+
+; *** 安装后错误
+ErrorOpeningReadme=尝试打开自述文件时出错。
+ErrorRestartingComputer=安装程序无法重启电脑，请手动重启。
+
+; *** 卸载消息
+UninstallNotFound=文件“%1”不存在。无法卸载。
+UninstallOpenError=文件“%1”不能被打开。无法卸载。
+UninstallUnsupportedVer=此版本的卸载程序无法识别卸载日志文件“%1”的格式。无法卸载
+UninstallUnknownEntry=卸载日志中遇到一个未知条目 (%1)
+ConfirmUninstall=您确认要完全移除 %1 及其所有组件吗？
+UninstallOnlyOnWin64=仅允许在 64 位 Windows 中卸载此程序。
+OnlyAdminCanUninstall=仅使用管理员权限的用户能完成此卸载。
+UninstallStatusLabel=正在从您的电脑中移除 %1，请稍候。
+UninstalledAll=已顺利从您的电脑中移除 %1。
+UninstalledMost=%1 卸载完成。%n%n有部分内容未能被删除，但您可以手动删除它们。
+UninstalledAndNeedsRestart=为完成 %1 的卸载，需要重启您的电脑。%n%n立即重启电脑吗？
+UninstallDataCorrupted=文件“%1”已损坏。无法卸载
+
+; *** 卸载状态消息
+ConfirmDeleteSharedFileTitle=删除共享的文件吗？
+ConfirmDeleteSharedFile2=系统表示下列共享的文件已不有其他程序使用。您希望卸载程序删除这些共享的文件吗？%n%n如果删除这些文件，但仍有程序在使用这些文件，则这些程序可能出现异常。如果您不能确定，请选择“否”，在系统中保留这些文件以免引发问题。
+SharedFileNameLabel=文件名：
+SharedFileLocationLabel=位置：
+WizardUninstalling=卸载状态
+StatusUninstalling=正在卸载 %1...
+
+; *** Shutdown block reasons
+ShutdownBlockReasonInstallingApp=正在安装 %1。
+ShutdownBlockReasonUninstallingApp=正在卸载 %1。
+
+; The custom messages below aren't used by Setup itself, but if you make
+; use of them in your scripts, you'll want to translate them.
+
+[CustomMessages]
+
+NameAndVersion=%1 版本 %2
+AdditionalIcons=附加快捷方式：
+CreateDesktopIcon=创建桌面快捷方式(&D)
+CreateQuickLaunchIcon=创建快速启动栏快捷方式(&Q)
+ProgramOnTheWeb=%1 网站
+UninstallProgram=卸载 %1
+LaunchProgram=运行 %1
+AssocFileExtension=将 %2 文件扩展名与 %1 建立关联(&A)
+AssocingFileExtension=正在将 %2 文件扩展名与 %1 建立关联...
+AutoStartProgramGroupDescription=启动：
+AutoStartProgram=自动启动 %1
+AddonHostProgramNotFound=您选择的文件夹中无法找到 %1。%n%n您要继续吗？

LanMountainDesktop/installer/LanMountainDesktop.iss

@@ -1,6 +1,8 @@
-#define MyAppName "LanMountainDesktop"
+#define MyAppName "LanMountainDesktop"
 #define MyAppPublisher "LanMountainDesktop Team"
 #define MyAppExeName "LanMountainDesktop.exe"
+#define MyAppId "{{5A058B0D-F95D-4A18-B9A0-93F843655DDB}"
+#define MyAppRegistryId "{5A058B0D-F95D-4A18-B9A0-93F843655DDB}"
 
 #ifndef MyAppVersion
   #define MyAppVersion "0.0.0"
@@ -19,11 +21,16 @@
 #endif
 
 [Setup]
-AppId={{5A058B0D-F95D-4A18-B9A0-93F843655DDB}
+AppId={#MyAppId}
 AppName={#MyAppName}
 AppVersion={#MyAppVersion}
 AppPublisher={#MyAppPublisher}
 DefaultDirName={autopf}\{#MyAppName}
+DisableDirPage=no
+UsePreviousAppDir=no
+ShowLanguageDialog=yes
+UsePreviousLanguage=no
+LanguageDetectionMethod=uilanguage
 DefaultGroupName={#MyAppName}
 UninstallDisplayIcon={app}\{#MyAppExeName}
 OutputDir={#MyOutputDir}
@@ -32,6 +39,9 @@ Compression=lzma2/ultra64
 SolidCompression=yes
 WizardStyle=modern
 PrivilegesRequired=admin
+CloseApplications=yes
+CloseApplicationsFilter={#MyAppExeName}
+RestartApplications=no
 DisableProgramGroupPage=yes
 
 #if MyAppArch == "x64"
@@ -45,10 +55,55 @@ ArchitecturesAllowed=x86compatible
 
 [Languages]
 Name: "english"; MessagesFile: "compiler:Default.isl"
+Name: "chinesesimplified"; MessagesFile: "{#SourcePath}\ChineseSimplified.isl"
+
+[CustomMessages]
+english.StartupTaskDescription=Launch LanMountainDesktop when you sign in to Windows
+chinesesimplified.StartupTaskDescription=登录 Windows 时启动 LanMountainDesktop
+english.WebView2MissingMessage=Microsoft Edge WebView2 Runtime is required for the browser component.
+chinesesimplified.WebView2MissingMessage=浏览器组件需要 Microsoft Edge WebView2 Runtime。
+english.WebView2MissingAction=Click "Yes" to open the official download page. Install it first, then run this installer again.
+chinesesimplified.WebView2MissingAction=单击“是”打开官方下载页面。请先完成安装，然后重新运行此安装程序。
+english.WebView2OpenFailedMessage=Unable to open the download page automatically.
+chinesesimplified.WebView2OpenFailedMessage=无法自动打开下载页面。
+english.WebView2OpenFailedAction=Please open this URL manually:
+chinesesimplified.WebView2OpenFailedAction=请手动打开以下链接：
+english.UpgradePageCaption=Upgrade Existing Installation
+chinesesimplified.UpgradePageCaption=升级现有安装
+english.UpgradePageDescription=LanMountainDesktop is already installed on this computer. Choose how to upgrade it.
+chinesesimplified.UpgradePageDescription=此计算机上已安装 LanMountainDesktop。请选择升级方式。
+english.UpgradeDetectedVersionLabel=Detected version:
+chinesesimplified.UpgradeDetectedVersionLabel=检测到的版本：
+english.UpgradeCurrentLocationLabel=Current location:
+chinesesimplified.UpgradeCurrentLocationLabel=当前安装位置：
+english.UpgradePageSubCaption=Choose "Upgrade existing installation" to reuse the current location, or choose "Change installation location and migrate installation" to move the app without leaving a duplicate copy behind.
+chinesesimplified.UpgradePageSubCaption=选择“升级现有安装”可复用当前安装位置；选择“更改安装位置并迁移安装”可移动应用，同时避免留下重复安装。
+english.UpgradeOptionInPlace=Upgrade existing installation
+chinesesimplified.UpgradeOptionInPlace=升级现有安装
+english.UpgradeOptionRelocate=Change installation location and migrate installation
+chinesesimplified.UpgradeOptionRelocate=更改安装位置并迁移安装
+english.UpgradeUnknownVersion=Unknown
+chinesesimplified.UpgradeUnknownVersion=未知
+english.UpgradeCleanupMissingUninstaller=Setup found an existing installation, but its uninstaller is unavailable. Please uninstall the current version manually and run this installer again.
+chinesesimplified.UpgradeCleanupMissingUninstaller=安装程序发现了现有安装，但无法找到它的卸载程序。请先手动卸载当前版本，再重新运行此安装程序。
+english.UpgradeCleanupFailedPrefix=Setup could not remove the existing installation automatically. Error code:
+chinesesimplified.UpgradeCleanupFailedPrefix=安装程序无法自动移除现有安装。错误代码：
+english.UpgradeCleanupFailedSuffix=Please close LanMountainDesktop, uninstall the current version manually, and then run this installer again.
+chinesesimplified.UpgradeCleanupFailedSuffix=请关闭 LanMountainDesktop，手动卸载当前版本，然后重新运行此安装程序。
 
 [Tasks]
 Name: "desktopicon"; Description: "{cm:CreateDesktopIcon}"; GroupDescription: "{cm:AdditionalIcons}"
-Name: "startup"; Description: "Launch LanMountainDesktop when you sign in to Windows"; GroupDescription: "{cm:AdditionalIcons}"; Flags: unchecked
+Name: "startup"; Description: "{cm:StartupTaskDescription}"; GroupDescription: "{cm:AdditionalIcons}"; Flags: unchecked
+
+[Dirs]
+Name: "{app}\log"; Permissions: users-modify
+
+[InstallDelete]
+Type: files; Name: "{app}\LanMontainDesktop.exe"
+Type: files; Name: "{app}\LanMontainDesktop.dll"
+Type: files; Name: "{app}\LanMontainDesktop.deps.json"
+Type: files; Name: "{app}\LanMontainDesktop.runtimeconfig.json"
+Type: files; Name: "{app}\LanMontainDesktop.pdb"
 
 [Files]
 Source: "{#PublishDir}\*"; DestDir: "{app}"; Flags: ignoreversion recursesubdirs createallsubdirs
@@ -65,12 +120,309 @@ Filename: "{app}\{#MyAppExeName}"; Description: "{cm:LaunchProgram,{#StringChang
 
 [Code]
 const
+  UninstallRegSubkey = 'Software\Microsoft\Windows\CurrentVersion\Uninstall\{#MyAppRegistryId}_is1';
   WebView2RuntimeKeyPath = 'SOFTWARE\Microsoft\EdgeUpdate\Clients\{F3017226-FE2A-4295-8BDF-00C3A9A7E4C5}';
   WebView2RuntimeDownloadUrl = 'https://go.microsoft.com/fwlink/p/?LinkId=2124703';
+  UpgradeChoiceInPlace = 0;
+  UpgradeChoiceRelocate = 1;
+
+var
+  UpgradeModePage: TInputOptionWizardPage;
+  ExistingInstallFound: Boolean;
+  ExistingInstallPath: String;
+  ExistingInstallVersion: String;
+  ExistingUninstallCommand: String;
+  ExistingInstallWas64Bit: Boolean;
+  ExistingInstallIsPerUser: Boolean;
+  ExistingInstallRemoved: Boolean;
+
+function NormalizePathValue(const Value: String): String;
+begin
+  Result := RemoveBackslashUnlessRoot(Trim(Value));
+end;
+
+function CombinePath(const BasePath: String; const ChildName: String): String;
+begin
+  if BasePath = '' then
+  begin
+    Result := ChildName;
+  end
+  else
+  begin
+    Result := NormalizePathValue(BasePath) + '\' + ChildName;
+  end;
+end;
+
+function SamePath(const LeftPath: String; const RightPath: String): Boolean;
+begin
+  Result := CompareText(NormalizePathValue(LeftPath), NormalizePathValue(RightPath)) = 0;
+end;
+
+function ExtractExecutableFromCommand(const CommandLine: String): String;
+var
+  CommandText: String;
+  ClosingQuotePos: Integer;
+  ExePos: Integer;
+begin
+  Result := '';
+  CommandText := Trim(CommandLine);
+  if CommandText = '' then
+  begin
+    exit;
+  end;
+
+  if CommandText[1] = '"' then
+  begin
+    Delete(CommandText, 1, 1);
+    ClosingQuotePos := Pos('"', CommandText);
+    if ClosingQuotePos > 0 then
+    begin
+      Result := Copy(CommandText, 1, ClosingQuotePos - 1);
+    end
+    else
+    begin
+      Result := CommandText;
+    end;
+  end
+  else
+  begin
+    ExePos := Pos('.exe', LowerCase(CommandText));
+    if ExePos > 0 then
+    begin
+      Result := Copy(CommandText, 1, ExePos + 3);
+    end
+    else
+    begin
+      Result := CommandText;
+    end;
+  end;
+
+  Result := NormalizePathValue(RemoveQuotes(Result));
+end;
+
+function GetExistingExecutablePath(): String;
+begin
+  if ExistingInstallPath = '' then
+  begin
+    Result := '';
+  end
+  else
+  begin
+    Result := CombinePath(ExistingInstallPath, '{#MyAppExeName}');
+  end;
+end;
+
+function GetDefaultInstallPath(): String;
+begin
+  Result := NormalizePathValue(ExpandConstant('{autopf}\{#MyAppName}'));
+end;
+
+function GetExistingInstallVersionText(): String;
+begin
+  Result := Trim(ExistingInstallVersion);
+  if Result = '' then
+  begin
+    Result := CustomMessage('UpgradeUnknownVersion');
+  end;
+end;
+
+procedure ShowUpgradeCleanupError(const MessageText: String);
+begin
+  Log(MessageText);
+  if not WizardSilent then
+  begin
+    MsgBox(MessageText, mbError, MB_OK);
+  end;
+end;
+
+function TryLoadExistingInstallation(
+  const RootKey: Integer;
+  const Is64BitView: Boolean;
+  const IsPerUser: Boolean): Boolean;
+var
+  InstallLocation: String;
+  AppPath: String;
+  UninstallString: String;
+  DisplayVersion: String;
+  ResolvedPath: String;
+begin
+  Result := False;
+  InstallLocation := '';
+  AppPath := '';
+  UninstallString := '';
+  DisplayVersion := '';
+
+  if not RegKeyExists(RootKey, UninstallRegSubkey) then
+  begin
+    exit;
+  end;
+
+  RegQueryStringValue(RootKey, UninstallRegSubkey, 'InstallLocation', InstallLocation);
+  RegQueryStringValue(RootKey, UninstallRegSubkey, 'Inno Setup: App Path', AppPath);
+  RegQueryStringValue(RootKey, UninstallRegSubkey, 'UninstallString', UninstallString);
+  RegQueryStringValue(RootKey, UninstallRegSubkey, 'DisplayVersion', DisplayVersion);
+
+  ResolvedPath := NormalizePathValue(InstallLocation);
+  if ResolvedPath = '' then
+  begin
+    ResolvedPath := NormalizePathValue(AppPath);
+  end;
+  if (ResolvedPath = '') and (UninstallString <> '') then
+  begin
+    ResolvedPath := NormalizePathValue(ExtractFileDir(ExtractExecutableFromCommand(UninstallString)));
+  end;
+
+  if (ResolvedPath = '') or
+     (not DirExists(ResolvedPath)) or
+     (not FileExists(CombinePath(ResolvedPath, '{#MyAppExeName}'))) then
+  begin
+    exit;
+  end;
+
+  ExistingInstallFound := True;
+  ExistingInstallPath := ResolvedPath;
+  ExistingInstallVersion := Trim(DisplayVersion);
+  ExistingUninstallCommand := Trim(UninstallString);
+  ExistingInstallWas64Bit := Is64BitView;
+  ExistingInstallIsPerUser := IsPerUser;
+  Result := True;
+end;
+
+procedure DetectExistingInstallation;
+begin
+  ExistingInstallFound := False;
+  ExistingInstallPath := '';
+  ExistingInstallVersion := '';
+  ExistingUninstallCommand := '';
+  ExistingInstallWas64Bit := False;
+  ExistingInstallIsPerUser := False;
+  ExistingInstallRemoved := False;
+
+  if IsWin64 then
+  begin
+    if TryLoadExistingInstallation(HKLM64, True, False) then
+    begin
+      exit;
+    end;
+    if TryLoadExistingInstallation(HKCU64, True, True) then
+    begin
+      exit;
+    end;
+  end;
+
+  if TryLoadExistingInstallation(HKLM32, False, False) then
+  begin
+    exit;
+  end;
+
+  TryLoadExistingInstallation(HKCU32, False, True);
+end;
+
+function SelectedUpgradeChoice(): Integer;
+begin
+  if UpgradeModePage <> nil then
+  begin
+    Result := UpgradeModePage.SelectedValueIndex;
+  end
+  else
+  begin
+    Result := UpgradeChoiceInPlace;
+  end;
+end;
+
+procedure ApplySelectedInstallDirectory;
+var
+  CurrentDir: String;
+begin
+  if not ExistingInstallFound then
+  begin
+    exit;
+  end;
+
+  if SelectedUpgradeChoice() = UpgradeChoiceInPlace then
+  begin
+    WizardForm.DirEdit.Text := ExistingInstallPath;
+    exit;
+  end;
+
+  CurrentDir := NormalizePathValue(WizardDirValue);
+  if (CurrentDir = '') or SamePath(CurrentDir, GetDefaultInstallPath()) then
+  begin
+    WizardForm.DirEdit.Text := ExistingInstallPath;
+  end;
+end;
+
+function GetSelectedInstallPath(): String;
+begin
+  Result := NormalizePathValue(ExpandConstant('{app}'));
+  if Result = '' then
+  begin
+    Result := NormalizePathValue(WizardDirValue);
+  end;
+  if Result = '' then
+  begin
+    Result := ExistingInstallPath;
+  end;
+end;
+
+function ExistingInstallRequiresCleanup(): Boolean;
+var
+  TargetPath: String;
+begin
+  Result := False;
+  if not ExistingInstallFound or ExistingInstallRemoved then
+  begin
+    exit;
+  end;
+
+  TargetPath := GetSelectedInstallPath();
+  Result := ExistingInstallIsPerUser or
+            (not SamePath(TargetPath, ExistingInstallPath)) or
+            (ExistingInstallWas64Bit <> Is64BitInstallMode);
+end;
+
+function RemoveExistingInstallation(): Boolean;
+var
+  UninstallerPath: String;
+  ResultCode: Integer;
+begin
+  Result := True;
+
+  if not ExistingInstallRequiresCleanup() then
+  begin
+    exit;
+  end;
+
+  UninstallerPath := ExtractExecutableFromCommand(ExistingUninstallCommand);
+  if (UninstallerPath = '') or (not FileExists(UninstallerPath)) then
+  begin
+    ShowUpgradeCleanupError(CustomMessage('UpgradeCleanupMissingUninstaller'));
+    Result := False;
+    exit;
+  end;
+
+  ResultCode := -1;
+  if not Exec(
+    UninstallerPath,
+    '/VERYSILENT /SUPPRESSMSGBOXES /NORESTART',
+    ExtractFileDir(UninstallerPath),
+    SW_SHOWNORMAL,
+    ewWaitUntilTerminated,
+    ResultCode) or (ResultCode <> 0) then
+  begin
+    ShowUpgradeCleanupError(
+      CustomMessage('UpgradeCleanupFailedPrefix') + ' ' + IntToStr(ResultCode) + '. ' +
+      CustomMessage('UpgradeCleanupFailedSuffix'));
+    Result := False;
+    exit;
+  end;
+
+  ExistingInstallRemoved := True;
+end;
 
 function IsWebView2RuntimeInstalled(): Boolean;
 var
-  VersionValue: string;
+  VersionValue: String;
 begin
   Result :=
     RegQueryStringValue(HKLM64, WebView2RuntimeKeyPath, 'pv', VersionValue) or
@@ -90,16 +442,16 @@ begin
   end;
 
   if MsgBox(
-    'Microsoft Edge WebView2 Runtime is required for the browser component.'#13#10#13#10 +
-    'Click "Yes" to open the official download page. Install it first, then run this installer again.',
+    CustomMessage('WebView2MissingMessage') + #13#10#13#10 +
+    CustomMessage('WebView2MissingAction'),
     mbConfirmation,
     MB_YESNO) = IDYES then
   begin
     if not ShellExec('open', WebView2RuntimeDownloadUrl, '', '', SW_SHOWNORMAL, ewNoWait, ErrorCode) then
     begin
       MsgBox(
-        'Unable to open the download page automatically.'#13#10 +
-        'Please open this URL manually:'#13#10 + WebView2RuntimeDownloadUrl,
+        CustomMessage('WebView2OpenFailedMessage') + #13#10 +
+        CustomMessage('WebView2OpenFailedAction') + #13#10 + WebView2RuntimeDownloadUrl,
         mbError,
         MB_OK);
     end;
@@ -107,3 +459,84 @@ begin
 
   Result := False;
 end;
+
+procedure InitializeWizard;
+var
+  DetailsText: String;
+begin
+  DetectExistingInstallation;
+
+  if not ExistingInstallFound then
+  begin
+    exit;
+  end;
+
+  DetailsText :=
+    CustomMessage('UpgradeDetectedVersionLabel') + ' ' + GetExistingInstallVersionText() + #13#10 +
+    CustomMessage('UpgradeCurrentLocationLabel') + ' ' + ExistingInstallPath + #13#10#13#10 +
+    CustomMessage('UpgradePageSubCaption');
+
+  UpgradeModePage := CreateInputOptionPage(
+    wpWelcome,
+    CustomMessage('UpgradePageCaption'),
+    CustomMessage('UpgradePageDescription'),
+    DetailsText,
+    True,
+    False);
+  UpgradeModePage.Add(CustomMessage('UpgradeOptionInPlace'));
+  UpgradeModePage.Add(CustomMessage('UpgradeOptionRelocate'));
+  UpgradeModePage.SelectedValueIndex := UpgradeChoiceInPlace;
+end;
+
+function NextButtonClick(CurPageID: Integer): Boolean;
+begin
+  Result := True;
+
+  if (UpgradeModePage <> nil) and (CurPageID = UpgradeModePage.ID) then
+  begin
+    ApplySelectedInstallDirectory;
+  end;
+end;
+
+function ShouldSkipPage(PageID: Integer): Boolean;
+begin
+  Result := False;
+
+  if (UpgradeModePage <> nil) and (PageID = UpgradeModePage.ID) then
+  begin
+    Result := not ExistingInstallFound;
+    exit;
+  end;
+
+  if PageID = wpSelectDir then
+  begin
+    Result := ExistingInstallFound and (SelectedUpgradeChoice() = UpgradeChoiceInPlace);
+  end;
+end;
+
+procedure RegisterExtraCloseApplicationsResources;
+var
+  ExistingExecutablePath: String;
+begin
+  if not ExistingInstallFound then
+  begin
+    exit;
+  end;
+
+  ExistingExecutablePath := GetExistingExecutablePath();
+  if (ExistingExecutablePath <> '') and FileExists(ExistingExecutablePath) then
+  begin
+    RegisterExtraCloseApplicationsResource(False, ExistingExecutablePath);
+  end;
+end;
+
+procedure CurStepChanged(CurStep: TSetupStep);
+begin
+  if CurStep = ssInstall then
+  begin
+    if not RemoveExistingInstallation() then
+    begin
+      Abort;
+    end;
+  end;
+end;

LanMountainDesktop/plugins/LoadedPlugin.cs

@@ -0,0 +1,88 @@
+using System;
+using System.Collections.Generic;
+using System.Reflection;
+using System.Threading;
+using System.Threading.Tasks;
+
+using LanMountainDesktop.PluginSdk;
+
+namespace LanMountainDesktop.Plugins;
+
+public sealed class LoadedPlugin : IDisposable, IAsyncDisposable
+{
+    private int _disposed;
+
+    internal LoadedPlugin(
+        PluginManifest manifest,
+        string sourcePath,
+        string assemblyPath,
+        Assembly assembly,
+        IPlugin plugin,
+        IPluginContext context,
+        IReadOnlyList<PluginSettingsPageRegistration> settingsPages,
+        IReadOnlyList<PluginDesktopComponentRegistration> desktopComponents,
+        PluginLoadContext loadContext)
+    {
+        Manifest = manifest;
+        SourcePath = sourcePath;
+        AssemblyPath = assemblyPath;
+        Assembly = assembly;
+        Plugin = plugin;
+        Context = context;
+        SettingsPages = settingsPages;
+        DesktopComponents = desktopComponents;
+        LoadContext = loadContext;
+    }
+
+    public PluginManifest Manifest { get; }
+
+    public string SourcePath { get; }
+
+    public string AssemblyPath { get; }
+
+    public Assembly Assembly { get; }
+
+    public IPlugin Plugin { get; }
+
+    public IPluginContext Context { get; }
+
+    public IReadOnlyList<PluginSettingsPageRegistration> SettingsPages { get; }
+
+    public IReadOnlyList<PluginDesktopComponentRegistration> DesktopComponents { get; }
+
+    public PluginLoadContext LoadContext { get; }
+
+    public void Dispose()
+    {
+        DisposeAsync().AsTask().GetAwaiter().GetResult();
+    }
+
+    public async ValueTask DisposeAsync()
+    {
+        if (Interlocked.Exchange(ref _disposed, 1) != 0)
+        {
+            return;
+        }
+
+        if (Plugin is IAsyncDisposable asyncDisposable)
+        {
+            await asyncDisposable.DisposeAsync();
+        }
+        else if (Plugin is IDisposable disposable)
+        {
+            disposable.Dispose();
+        }
+
+        if (Context is IAsyncDisposable asyncContext)
+        {
+            await asyncContext.DisposeAsync();
+        }
+        else if (Context is IDisposable disposableContext)
+        {
+            disposableContext.Dispose();
+        }
+
+        LoadContext.Unload();
+        GC.SuppressFinalize(this);
+    }
+}

LanMountainDesktop/plugins/MainWindow.PluginMarketSettingsLocalization.cs

@@ -0,0 +1,9 @@
+namespace LanMountainDesktop.Views;
+
+public partial class MainWindow
+{
+    private void ApplyPluginMarketSettingsLocalization()
+    {
+        PluginMarketSettingsPanel.RefreshFromRuntime();
+    }
+}

LanMountainDesktop/plugins/MainWindow.PluginSettingsControls.cs

@@ -0,0 +1,15 @@
+using Avalonia.Controls;
+
+namespace LanMountainDesktop.Views;
+
+public partial class MainWindow
+{
+    internal TextBlock PluginSettingsPanelTitleTextBlock => PluginSettingsPanel.FindControl<TextBlock>("PluginSettingsPanelTitleTextBlock")!;
+    internal FluentAvalonia.UI.Controls.SettingsExpander PluginSystemSettingsExpander => PluginSettingsPanel.FindControl<FluentAvalonia.UI.Controls.SettingsExpander>("PluginSystemSettingsExpander")!;
+    internal TextBlock PluginSystemDescriptionTextBlock => PluginSettingsPanel.FindControl<TextBlock>("PluginSystemDescriptionTextBlock")!;
+    internal TextBlock PluginSystemStatusTextBlock => PluginSettingsPanel.FindControl<TextBlock>("PluginSystemStatusTextBlock")!;
+    internal FluentAvalonia.UI.Controls.SettingsExpander InstalledPluginsSettingsExpander => PluginSettingsPanel.FindControl<FluentAvalonia.UI.Controls.SettingsExpander>("InstalledPluginsSettingsExpander")!;
+    internal FluentAvalonia.UI.Controls.SettingsExpander ImportPluginPackageSettingsExpander => PluginSettingsPanel.FindControl<FluentAvalonia.UI.Controls.SettingsExpander>("ImportPluginPackageSettingsExpander")!;
+    internal TextBlock PluginRestartHintTextBlock => PluginSettingsPanel.FindControl<TextBlock>("PluginRestartHintTextBlock")!;
+    internal TextBlock PluginCatalogEmptyTextBlock => PluginSettingsPanel.FindControl<TextBlock>("PluginCatalogEmptyTextBlock")!;
+}

LanMountainDesktop/plugins/MainWindow.PluginSettingsHost.cs

@@ -0,0 +1,217 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using Avalonia;
+using Avalonia.Controls;
+using Avalonia.Media;
+using FluentAvalonia.UI.Controls;
+using FluentIcons.Avalonia.Fluent;
+using FluentIcons.Common;
+using LanMountainDesktop.Models;
+using LanMountainDesktop.Services;
+
+namespace LanMountainDesktop.Views;
+
+public partial class MainWindow
+{
+    private readonly Dictionary<string, Control> _pluginSettingsPageHosts = new(StringComparer.OrdinalIgnoreCase);
+
+    private void InitializePluginSettingsNavigation()
+    {
+        if (_pluginSettingsPageHosts.Count > 0 || SettingsNavView?.MenuItems is null)
+        {
+            return;
+        }
+
+        var runtime = (Application.Current as App)?.PluginRuntimeService;
+        var contributions = runtime?.SettingsPages
+            .OrderBy(contribution => contribution.Registration.SortOrder)
+            .ThenBy(contribution => contribution.Plugin.Manifest.Name, StringComparer.OrdinalIgnoreCase)
+            .ThenBy(contribution => contribution.Registration.Title, StringComparer.OrdinalIgnoreCase)
+            .ToArray();
+
+        if (contributions is not { Length: > 0 })
+        {
+            return;
+        }
+
+        var pageCountsByPluginId = contributions
+            .GroupBy(contribution => contribution.Plugin.Manifest.Id, StringComparer.OrdinalIgnoreCase)
+            .ToDictionary(group => group.Key, group => group.Count(), StringComparer.OrdinalIgnoreCase);
+
+        var insertIndex = SettingsNavView.MenuItems.IndexOf(SettingsNavPluginMarketItem) + 1;
+        foreach (var contribution in contributions)
+        {
+            var tag = BuildPluginSettingsTag(contribution);
+            var navigationTitle = BuildPluginSettingsNavigationTitle(contribution, pageCountsByPluginId);
+            var navItem = new NavigationViewItem
+            {
+                Content = navigationTitle,
+                Tag = tag,
+                IconSource = new FluentIcons.Avalonia.Fluent.SymbolIconSource
+                {
+                    Symbol = FluentIcons.Common.Symbol.PuzzlePiece,
+                    IconVariant = FluentIcons.Common.IconVariant.Regular
+                }
+            };
+
+            ToolTip.SetTip(navItem, $"{contribution.Plugin.Manifest.Name} - {contribution.Registration.Title}");
+
+            SettingsNavView.MenuItems.Insert(insertIndex++, navItem);
+
+            var pageHost = CreatePluginSettingsPageHost(contribution);
+            pageHost.IsVisible = false;
+            SettingsContentPagesHost.Children.Add(pageHost);
+            _pluginSettingsPageHosts[tag] = pageHost;
+        }
+    }
+
+    private static string BuildPluginSettingsTag(PluginSettingsPageContribution contribution)
+    {
+        return $"PluginPage:{contribution.Plugin.Manifest.Id}:{contribution.Registration.Id}";
+    }
+
+    private static string BuildPluginSettingsNavigationTitle(
+        PluginSettingsPageContribution contribution,
+        IReadOnlyDictionary<string, int> pageCountsByPluginId)
+    {
+        return pageCountsByPluginId.TryGetValue(contribution.Plugin.Manifest.Id, out var pageCount) && pageCount > 1
+            ? $"{contribution.Plugin.Manifest.Name} - {contribution.Registration.Title}"
+            : contribution.Plugin.Manifest.Name;
+    }
+
+    private Control CreatePluginSettingsPageHost(PluginSettingsPageContribution contribution)
+    {
+        Control content;
+        try
+        {
+            content = contribution.Registration.ContentFactory();
+        }
+        catch (Exception ex)
+        {
+            content = CreatePluginPageErrorContent(ex);
+        }
+
+        return new StackPanel
+        {
+            Spacing = 16,
+            Children =
+            {
+                new TextBlock
+                {
+                    Text = contribution.Registration.Title,
+                    FontSize = 24,
+                    FontWeight = FontWeight.SemiBold,
+                    Foreground = GetThemeBrush("AdaptiveTextPrimaryBrush")
+                },
+                new TextBlock
+                {
+                    Text = contribution.Plugin.Manifest.Name,
+                    Foreground = GetThemeBrush("AdaptiveTextSecondaryBrush")
+                },
+                content
+            }
+        };
+    }
+
+    private Control CreatePluginPageErrorContent(Exception exception)
+    {
+        return new Border
+        {
+            Background = new SolidColorBrush(Color.Parse("#332B0F16")),
+            BorderBrush = new SolidColorBrush(Color.Parse("#66F97316")),
+            BorderThickness = new Thickness(1),
+            CornerRadius = new CornerRadius(16),
+            Padding = new Thickness(16),
+            Child = new TextBlock
+            {
+                Text = exception.Message,
+                TextWrapping = TextWrapping.Wrap
+            }
+        };
+    }
+
+    private void UpdatePluginSettingsPageVisibility(string? selectedTag)
+    {
+        foreach (var pair in _pluginSettingsPageHosts)
+        {
+            pair.Value.IsVisible = string.Equals(pair.Key, selectedTag, StringComparison.OrdinalIgnoreCase);
+        }
+    }
+
+    internal void RefreshPluginSettingsNavigation()
+    {
+        if (SettingsNavView?.MenuItems is null)
+        {
+            return;
+        }
+
+        foreach (var pair in _pluginSettingsPageHosts.ToArray())
+        {
+            var navItem = SettingsNavView.MenuItems
+                .OfType<NavigationViewItem>()
+                .FirstOrDefault(item => string.Equals(item.Tag?.ToString(), pair.Key, StringComparison.OrdinalIgnoreCase));
+            if (navItem is not null)
+            {
+                SettingsNavView.MenuItems.Remove(navItem);
+            }
+
+            SettingsContentPagesHost.Children.Remove(pair.Value);
+        }
+
+        _pluginSettingsPageHosts.Clear();
+        InitializePluginSettingsNavigation();
+    }
+
+    private string? GetSelectedSettingsTabTag()
+    {
+        return (SettingsNavView?.SelectedItem as NavigationViewItem)?.Tag?.ToString();
+    }
+
+    private int ResolveSelectedSettingsTabIndex()
+    {
+        if (SettingsNavView?.SelectedItem is null || SettingsNavView.MenuItems is null)
+        {
+            return 0;
+        }
+
+        for (var i = 0; i < SettingsNavView.MenuItems.Count; i++)
+        {
+            if (ReferenceEquals(SettingsNavView.MenuItems[i], SettingsNavView.SelectedItem))
+            {
+                return i;
+            }
+        }
+
+        return 0;
+    }
+
+    private void RestoreSettingsTabSelection(AppSettingsSnapshot snapshot)
+    {
+        if (SettingsNavView?.MenuItems is null || SettingsNavView.MenuItems.Count == 0)
+        {
+            return;
+        }
+
+        if (!string.IsNullOrWhiteSpace(snapshot.SettingsTabTag))
+        {
+            var taggedItem = SettingsNavView.MenuItems
+                .OfType<NavigationViewItem>()
+                .FirstOrDefault(item => string.Equals(item.Tag?.ToString(), snapshot.SettingsTabTag, StringComparison.OrdinalIgnoreCase));
+            if (taggedItem is not null)
+            {
+                SettingsNavView.SelectedItem = taggedItem;
+                return;
+            }
+        }
+
+        var safeIndex = Math.Clamp(snapshot.SettingsTabIndex, 0, Math.Max(0, SettingsNavView.MenuItems.Count - 1));
+        if (SettingsNavView.MenuItems[safeIndex] is NavigationViewItem navItem)
+        {
+            SettingsNavView.SelectedItem = navItem;
+        }
+    }
+}
+
+
+

LanMountainDesktop/plugins/MainWindow.PluginSettingsLocalization.cs

@@ -0,0 +1,32 @@
+namespace LanMountainDesktop.Views;
+
+public partial class MainWindow
+{
+    private void ApplyPluginSettingsLocalization()
+    {
+        PluginSettingsPanelTitleTextBlock.Text = L("settings.plugins.title", "Plugins");
+        PluginSystemSettingsExpander.Header = L("settings.plugins.runtime_header", "Plugin Runtime");
+        PluginSystemSettingsExpander.Description = L(
+            "settings.plugins.runtime_desc",
+            "Review plugin runtime state and load results.");
+        PluginSystemDescriptionTextBlock.Text = L(
+            "settings.plugins.runtime_hint",
+            "This page shows discovery status, load results, and runtime diagnostics for installed plugins.");
+        PluginSystemStatusTextBlock.Text = L(
+            "settings.plugins.runtime_status",
+            "Plugin runtime status will appear here after plugin discovery completes.");
+        InstalledPluginsSettingsExpander.Header = L("settings.plugins.installed_header", "Installed Plugins");
+        InstalledPluginsSettingsExpander.Description = L(
+            "settings.plugins.installed_desc",
+            "Review installed plugins and remove them here.");
+        ImportPluginPackageSettingsExpander.Header = L("settings.plugins.import_header", "Install From Package");
+        ImportPluginPackageSettingsExpander.Description = L(
+            "settings.plugins.import_desc",
+            "Open a .laapp package and stage it into the local plugin directory.");
+        PluginRestartHintTextBlock.Text = L(
+            "settings.plugins.restart_hint",
+            "Plugin installation and deletion changes take effect after restarting the app.");
+        PluginCatalogEmptyTextBlock.Text = L("settings.plugins.empty", "No plugins found.");
+        PluginSettingsPanel.RefreshFromRuntime();
+    }
+}

LanMountainDesktop/plugins/PluginCatalogEntry.cs

@@ -0,0 +1,19 @@
+using LanMountainDesktop.PluginSdk;
+
+namespace LanMountainDesktop.Services;
+
+public enum PluginCatalogSourceKind
+{
+    Package = 0,
+    Manifest = 1
+}
+
+public sealed record PluginCatalogEntry(
+    PluginManifest Manifest,
+    string SourcePath,
+    bool IsPackage,
+    bool IsEnabled,
+    bool IsLoaded,
+    string? ErrorMessage,
+    int SettingsPageCount,
+    int WidgetCount);

LanMountainDesktop/plugins/PluginContributions.cs

@@ -0,0 +1,12 @@
+using LanMountainDesktop.Plugins;
+using LanMountainDesktop.PluginSdk;
+
+namespace LanMountainDesktop.Services;
+
+public sealed record PluginSettingsPageContribution(
+    LoadedPlugin Plugin,
+    PluginSettingsPageRegistration Registration);
+
+public sealed record PluginDesktopComponentContribution(
+    LoadedPlugin Plugin,
+    PluginDesktopComponentRegistration Registration);

LanMountainDesktop/plugins/PluginLoadContext.cs

@@ -0,0 +1,72 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Reflection;
+using System.Runtime.Loader;
+
+using LanMountainDesktop.PluginSdk;
+
+namespace LanMountainDesktop.Plugins;
+
+public sealed class PluginLoadContext : AssemblyLoadContext
+{
+    private readonly AssemblyDependencyResolver _resolver;
+    private readonly HashSet<string> _sharedAssemblyNames;
+
+    public PluginLoadContext(string mainAssemblyPath, IEnumerable<string>? sharedAssemblyNames = null)
+        : base($"{Path.GetFileNameWithoutExtension(mainAssemblyPath)}_{Guid.NewGuid():N}", isCollectible: true)
+    {
+        ArgumentException.ThrowIfNullOrWhiteSpace(mainAssemblyPath);
+
+        MainAssemblyPath = Path.GetFullPath(mainAssemblyPath);
+        _resolver = new AssemblyDependencyResolver(MainAssemblyPath);
+        _sharedAssemblyNames = new HashSet<string>(StringComparer.OrdinalIgnoreCase)
+        {
+            typeof(IPlugin).Assembly.GetName().Name!
+        };
+
+        if (sharedAssemblyNames is null)
+        {
+            return;
+        }
+
+        foreach (var assemblyName in sharedAssemblyNames)
+        {
+            if (!string.IsNullOrWhiteSpace(assemblyName))
+            {
+                _sharedAssemblyNames.Add(assemblyName.Trim());
+            }
+        }
+    }
+
+    public string MainAssemblyPath { get; }
+
+    protected override Assembly? Load(AssemblyName assemblyName)
+    {
+        var simpleName = assemblyName.Name;
+        if (string.IsNullOrWhiteSpace(simpleName))
+        {
+            return null;
+        }
+
+        if (_sharedAssemblyNames.Contains(simpleName))
+        {
+            return Default.Assemblies.FirstOrDefault(
+                    assembly => string.Equals(
+                        assembly.GetName().Name,
+                        simpleName,
+                        StringComparison.OrdinalIgnoreCase))
+                ?? null;
+        }
+
+        var assemblyPath = _resolver.ResolveAssemblyToPath(assemblyName);
+        return assemblyPath is null ? null : LoadFromAssemblyPath(assemblyPath);
+    }
+
+    protected override nint LoadUnmanagedDll(string unmanagedDllName)
+    {
+        var libraryPath = _resolver.ResolveUnmanagedDllToPath(unmanagedDllName);
+        return libraryPath is null ? nint.Zero : LoadUnmanagedDllFromPath(libraryPath);
+    }
+}

LanMountainDesktop/plugins/PluginLoadResult.cs

@@ -0,0 +1,24 @@
+using System;
+
+using LanMountainDesktop.PluginSdk;
+
+namespace LanMountainDesktop.Plugins;
+
+public sealed record PluginLoadResult(
+    string SourcePath,
+    PluginManifest? Manifest,
+    LoadedPlugin? LoadedPlugin,
+    Exception? Error)
+{
+    public bool IsSuccess => LoadedPlugin is not null && Error is null;
+
+    public static PluginLoadResult Success(string sourcePath, PluginManifest manifest, LoadedPlugin loadedPlugin)
+    {
+        return new PluginLoadResult(sourcePath, manifest, loadedPlugin, null);
+    }
+
+    public static PluginLoadResult Failure(string sourcePath, PluginManifest? manifest, Exception error)
+    {
+        return new PluginLoadResult(sourcePath, manifest, null, error);
+    }
+}