fix.修复了快捷方式组件无法正常透明的问题。

CHANGELOG.md

@@ -1,5 +1,31 @@
 # 更新日志 / Changelog
 
+## [0.8.3.4](https://github.com/yourorg/LanMountainDesktop/releases/tag/v0.8.3.4) - 2026-04-12
+
+### 新增 (Added)
+
+- ✨ **开发者调试工具**: 新增开发者调试工具，优化插件开发体验
+  - 提供便捷的调试功能，帮助开发者快速定位和解决问题
+  - 支持插件运行时状态监控和日志查看
+  - 提升插件开发效率和调试体验
+
+### 变更 (Changed)
+
+- ✨ **插件设置页面支持 View 展示**: 插件设置页面现在支持使用 View 进行展示
+  - 插件开发者可以通过 View 自定义设置页面的 UI 和交互
+  - 提供更灵活的设置页面展示方式，提升插件用户体验
+  - 兼容原有的设置方式，平滑过渡
+
+### 修复 (Fixed)
+
+- 无
+
+### 移除 (Removed)
+
+- 无
+
+***
+
 ## [0.8.3.3](https://github.com/yourorg/LanMountainDesktop/releases/tag/v0.8.3.3) - 2026-04-12
 
 ### 新增 (Added)

LanMountainDesktop.PluginSdk/LanMountainDesktop.PluginSdk.csproj

@@ -4,7 +4,7 @@
     <TargetFramework>net10.0</TargetFramework>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
-    <Version>4.0.0</Version>
+    <Version>4.0.1</Version>
     <PackageId>LanMountainDesktop.PluginSdk</PackageId>
     <IsPackable>true</IsPackable>
     <Authors>LanMountainDesktop</Authors>

LanMountainDesktop.PluginSdk/PluginSdkInfo.cs

@@ -2,7 +2,7 @@ namespace LanMountainDesktop.PluginSdk;
 
 public static class PluginSdkInfo
 {
-    public const string ApiVersion = "4.0.0";
+    public const string ApiVersion = "4.0.1";
     public const string ManifestFileName = "plugin.json";
     public const string PackageFileExtension = ".laapp";
     public const string DataDirectoryName = "Data";

LanMountainDesktop.PluginSdk/PluginServiceCollectionExtensions.cs

@@ -28,6 +28,35 @@ public static class PluginServiceCollectionExtensions
         return services;
     }
 
+    /// <summary>
+    /// Registers a plugin settings section with a custom AXAML view.
+    /// The host application will display <typeparamref name="TView"/> directly
+    /// in the settings window, allowing the plugin to use any Fluent Avalonia controls
+    /// and custom layouts — just like built-in settings pages.
+    /// </summary>
+    /// <typeparam name="TView">A <see cref="SettingsPageBase"/> subclass that defines the settings UI using AXAML.</typeparam>
+    public static IServiceCollection AddPluginSettingsSection<TView>(
+        this IServiceCollection services,
+        string id,
+        string titleLocalizationKey,
+        string? descriptionLocalizationKey = null,
+        string iconKey = "PuzzlePiece",
+        int sortOrder = 0)
+        where TView : SettingsPageBase
+    {
+        ArgumentNullException.ThrowIfNull(services);
+
+        var builder = new PluginSettingsSectionBuilder(
+            id,
+            titleLocalizationKey,
+            descriptionLocalizationKey,
+            iconKey,
+            sortOrder);
+        builder.SetCustomView<TView>();
+        services.AddSingleton(builder.Build());
+        return services;
+    }
+
     public static IServiceCollection AddPluginDesktopComponent<TControl>(
         this IServiceCollection services,
         PluginDesktopComponentOptions options)

LanMountainDesktop.PluginSdk/PluginSettingsSectionBuilder.cs

@@ -1,10 +1,13 @@
+using System;
 using System.Collections.Generic;
+using Avalonia.Controls;
 
 namespace LanMountainDesktop.PluginSdk;
 
 public sealed class PluginSettingsSectionBuilder
 {
     private readonly List<SettingsOptionDefinition> _options = [];
+    private Type? _customViewType;
 
     internal PluginSettingsSectionBuilder(
         string id,
@@ -30,8 +33,46 @@ public sealed class PluginSettingsSectionBuilder
 
     public int SortOrder { get; }
 
+    public Type? CustomViewType => _customViewType;
+
     public IReadOnlyList<SettingsOptionDefinition> Options => _options;
 
+    /// <summary>
+    /// Sets a custom AXAML view for this settings section.
+    /// The view type must be a subclass of <see cref="SettingsPageBase"/>.
+    /// When a custom view is provided, the host application will use it directly
+    /// instead of generating a page from the declared options, allowing the plugin
+    /// to use any Fluent Avalonia controls and custom layouts.
+    /// </summary>
+    /// <typeparam name="TView">A <see cref="SettingsPageBase"/> subclass that defines the settings UI.</typeparam>
+    public PluginSettingsSectionBuilder SetCustomView<TView>() where TView : SettingsPageBase
+    {
+        _customViewType = typeof(TView);
+        return this;
+    }
+
+    /// <summary>
+    /// Sets a custom AXAML view for this settings section.
+    /// The view type must be a subclass of <see cref="SettingsPageBase"/>.
+    /// When a custom view is provided, the host application will use it directly
+    /// instead of generating a page from the declared options.
+    /// </summary>
+    /// <param name="viewType">A <see cref="SettingsPageBase"/> subclass type that defines the settings UI.</param>
+    public PluginSettingsSectionBuilder SetCustomView(Type viewType)
+    {
+        ArgumentNullException.ThrowIfNull(viewType);
+
+        if (!typeof(SettingsPageBase).IsAssignableFrom(viewType))
+        {
+            throw new ArgumentException(
+                $"Custom view type must be a subclass of {nameof(SettingsPageBase)}.",
+                nameof(viewType));
+        }
+
+        _customViewType = viewType;
+        return this;
+    }
+
     public PluginSettingsSectionBuilder AddOption(SettingsOptionDefinition option)
     {
         ArgumentNullException.ThrowIfNull(option);
@@ -142,6 +183,7 @@ public sealed class PluginSettingsSectionBuilder
             _options.ToArray(),
             DescriptionLocalizationKey,
             IconKey,
-            SortOrder);
+            SortOrder,
+            _customViewType);
     }
 }

LanMountainDesktop.PluginSdk/PluginSettingsSectionRegistration.cs

@@ -1,3 +1,4 @@
+using System;
 using System.Collections.Generic;
 
 namespace LanMountainDesktop.PluginSdk;
@@ -10,7 +11,8 @@ public sealed class PluginSettingsSectionRegistration
         IReadOnlyList<SettingsOptionDefinition> options,
         string? descriptionLocalizationKey = null,
         string iconKey = "PuzzlePiece",
-        int sortOrder = 0)
+        int sortOrder = 0,
+        Type? customViewType = null)
     {
         ArgumentException.ThrowIfNullOrWhiteSpace(id);
         ArgumentException.ThrowIfNullOrWhiteSpace(titleLocalizationKey);
@@ -24,6 +26,15 @@ public sealed class PluginSettingsSectionRegistration
         IconKey = iconKey.Trim();
         SortOrder = sortOrder;
         Options = options ?? [];
+
+        if (customViewType is not null && !typeof(SettingsPageBase).IsAssignableFrom(customViewType))
+        {
+            throw new ArgumentException(
+                $"Custom view type must be a subclass of {nameof(SettingsPageBase)}.",
+                nameof(customViewType));
+        }
+
+        CustomViewType = customViewType;
     }
 
     public string Id { get; }
@@ -37,4 +48,11 @@ public sealed class PluginSettingsSectionRegistration
     public int SortOrder { get; }
 
     public IReadOnlyList<SettingsOptionDefinition> Options { get; }
+
+    /// <summary>
+    /// When set, the host application will instantiate this <see cref="SettingsPageBase"/> subclass
+    /// instead of generating a page from <see cref="Options"/>.
+    /// This allows plugins to provide fully custom AXAML views with any Fluent Avalonia controls.
+    /// </summary>
+    public Type? CustomViewType { get; }
 }

LanMountainDesktop.PluginSdk/README.md

@@ -14,7 +14,7 @@ Official SDK package for LanMountainDesktop plugins.
 
 ```xml
 <ItemGroup>
-  <PackageReference Include="LanMountainDesktop.PluginSdk" Version="4.0.0" />
+  <PackageReference Include="LanMountainDesktop.PluginSdk" Version="4.0.1" />
 </ItemGroup>
 ```
 

LanMountainDesktop.PluginSdk/SettingsPageCategory.cs

@@ -9,5 +9,6 @@ public enum SettingsPageCategory
     PluginCatalog = 35,
     [Obsolete("Use PluginCatalog instead.")]
     PluginMarket = 35,
-    About = 40
+    About = 40,
+    Dev = 50
 }

LanMountainDesktop.PluginTemplate/content/Plugin.cs

@@ -10,6 +10,38 @@ public sealed class Plugin : PluginBase
     public override void Initialize(HostBuilderContext context, IServiceCollection services)
     {
         _ = context;
+
+        // ── Option 1: Declarative settings (simple key-value options) ──────────
+        // The host generates a settings page automatically from the declared options.
+        // Supported option types: Toggle, Text, Number, Select, Path, List.
+        //
+        // services.AddPluginSettingsSection(
+        //     "my-plugin-settings",
+        //     "My Plugin Settings",
+        //     section => section
+        //         .AddToggle("enable_feature", "Enable Feature", defaultValue: true)
+        //         .AddNumber("refresh_interval", "Refresh Interval", defaultValue: 30, minimum: 5, maximum: 120),
+        //     iconKey: "PuzzlePiece");
+
+        // ── Option 2: Custom AXAML view (full Fluent Avalonia controls) ────────
+        // Provide a SettingsPageBase subclass to use any Fluent Avalonia control
+        // (SettingsExpander, ColorPicker, Slider, etc.) — just like built-in pages.
+        //
+        // services.AddPluginSettingsSection<MyCustomSettingsPage>(
+        //     "my-plugin-settings",
+        //     "My Plugin Settings",
+        //     iconKey: "PuzzlePiece");
+        //
+        // Or mix both: declare options AND set a custom view on the builder:
+        //
+        // services.AddPluginSettingsSection(
+        //     "my-plugin-settings",
+        //     "My Plugin Settings",
+        //     section => section
+        //         .SetCustomView<MyCustomSettingsPage>()
+        //         .AddToggle("enable_feature", "Enable Feature"),
+        //     iconKey: "PuzzlePiece");
+
         _ = services;
     }
 }

LanMountainDesktop.PluginTemplate/content/plugin.json

@@ -4,7 +4,7 @@
   "description": "__PLUGIN_DESCRIPTION__",
   "author": "__PLUGIN_AUTHOR__",
   "version": "1.0.0",
-  "apiVersion": "4.0.0",
+  "apiVersion": "4.0.1",
   "entranceAssembly": "LanMountainDesktop.PluginTemplate.dll",
   "sharedContracts": []
 }

LanMountainDesktop/Models/AppSettingsSnapshot.cs

@@ -154,6 +154,10 @@ public sealed class AppSettingsSnapshot
 
     public List<string> DisabledPluginIds { get; set; } = [];
 
+    public bool IsDevModeEnabled { get; set; }
+
+    public string? DevPluginPath { get; set; }
+
     #region Study Settings
 
     public bool StudyEnabled { get; set; } = true;

LanMountainDesktop/Program.cs

@@ -6,6 +6,7 @@ using Avalonia;
 using Avalonia.WebView.Desktop;
 using LanMountainDesktop.DesktopHost;
 using LanMountainDesktop.Models;
+using LanMountainDesktop.Plugins;
 using LanMountainDesktop.Services;
 using LanMountainDesktop.Services.Settings;
 
@@ -19,6 +20,7 @@ public sealed class Program
     public static void Main(string[] args)
     {
         AppLogger.Initialize();
+        DevPluginOptions.Parse(args);
         RegisterGlobalExceptionLogging();
         var restartParentProcessId = AppRestartService.TryGetRestartParentProcessId(args);
 

LanMountainDesktop/Services/Settings/SettingsPageRegistry.cs

@@ -3,6 +3,7 @@ using System.Collections.Generic;
 using System.Linq;
 using System.Reflection;
 using Avalonia.Controls;
+using LanMountainDesktop.Models;
 using LanMountainDesktop.PluginSdk;
 using LanMountainDesktop.Plugins;
 using LanMountainDesktop.Services.PluginMarket;
@@ -204,6 +205,10 @@ internal sealed class SettingsPageRegistry : ISettingsPageRegistry, IDisposable
         string? pluginId,
         bool isBuiltIn)
     {
+        var isDevModeEnabled = _settingsFacade.Settings
+            .LoadSnapshot<AppSettingsSnapshot>(SettingsScope.App)
+            .IsDevModeEnabled;
+
         foreach (var pageType in assembly.GetTypes()
                      .Where(type => !type.IsAbstract && typeof(SettingsPageBase).IsAssignableFrom(type)))
         {
@@ -214,6 +219,12 @@ internal sealed class SettingsPageRegistry : ISettingsPageRegistry, IDisposable
             }
 
             var category = isBuiltIn ? pageInfo.Category : SettingsPageCategory.Plugins;
+
+            if (category == SettingsPageCategory.Dev && !isDevModeEnabled)
+            {
+                continue;
+            }
+
             var sortOrder = isBuiltIn ? pageInfo.SortOrder : 100 + pageInfo.SortOrder;
             var title = ResolveLocalizedText(pageInfo.TitleLocalizationKey, pageInfo.Name);
             var description = ResolveLocalizedText(pageInfo.DescriptionLocalizationKey, null);
@@ -256,6 +267,29 @@ internal sealed class SettingsPageRegistry : ISettingsPageRegistry, IDisposable
                 ? null
                 : localizer.GetString(section.DescriptionLocalizationKey, section.DescriptionLocalizationKey);
 
+            Func<ISettingsPageHostContext, Control> factory;
+
+            if (section.CustomViewType is not null)
+            {
+                var customViewType = section.CustomViewType;
+                var pluginServices = loadedPlugin.Services;
+                factory = hostContext => CreatePage(pluginServices, customViewType, hostContext);
+            }
+            else
+            {
+                factory = hostContext =>
+                {
+                    var page = new GeneratedPluginSettingsPage(
+                        new PluginGeneratedSettingsPageViewModel(
+                            _settingsFacade.Settings,
+                            loadedPlugin.Manifest.Id,
+                            section,
+                            localizer));
+                    page.InitializeHostContext(hostContext);
+                    return page;
+                };
+            }
+
             _pages.Add(new SettingsPageDescriptor(
                 pageId,
                 title,
@@ -270,17 +304,7 @@ internal sealed class SettingsPageRegistry : ISettingsPageRegistry, IDisposable
                 hidePageTitle: false,
                 useFullWidth: false,
                 groupId: null,
-                hostContext =>
-                {
-                    var page = new GeneratedPluginSettingsPage(
-                        new PluginGeneratedSettingsPageViewModel(
-                            _settingsFacade.Settings,
-                            loadedPlugin.Manifest.Id,
-                            section,
-                            localizer));
-                    page.InitializeHostContext(hostContext);
-                    return page;
-                }));
+                factory));
         }
     }
 

LanMountainDesktop/Services/Settings/SettingsWindowService.cs

@@ -72,6 +72,7 @@ internal sealed class SettingsWindowService : ISettingsWindowService
         _localizationService = new();
         _settingsFacade.Settings.Changed += OnSettingsChanged;
         _appearanceThemeService.Changed += OnAppearanceThemeChanged;
+        AppSettingsService.SettingsSaved += OnAppSettingsSaved;
     }
 
     private string L(string key)
@@ -279,6 +280,7 @@ internal sealed class SettingsWindowService : ISettingsWindowService
             var changedKeys = e.ChangedKeys?.ToArray();
             var refreshAll = changedKeys is null || changedKeys.Length == 0;
             var languageChanged = refreshAll || changedKeys.Contains(nameof(AppSettingsSnapshot.LanguageCode), StringComparer.OrdinalIgnoreCase);
+            var devModeChanged = refreshAll || changedKeys.Contains(nameof(AppSettingsSnapshot.IsDevModeEnabled), StringComparer.OrdinalIgnoreCase);
             var liveAppearance = _appearanceThemeService.GetCurrent();
             var themeChanged =
                 refreshAll ||
@@ -291,14 +293,13 @@ internal sealed class SettingsWindowService : ISettingsWindowService
                   changedKeys.Contains(nameof(AppSettingsSnapshot.WallpaperColor), StringComparer.OrdinalIgnoreCase))) ||
                 changedKeys.Contains(nameof(AppSettingsSnapshot.UseSystemChrome), StringComparer.OrdinalIgnoreCase);
 
-            if (languageChanged)
+            if (languageChanged || devModeChanged)
             {
                 var regionState = _settingsFacade.Region.Get();
-                // 清除本地化缓存，强制重新加载语言文件
                 _localizationService.ClearCache();
                 _viewModel.RefreshLanguage(regionState.LanguageCode);
                 _pageRegistry.Rebuild();
-                _window.ReloadPages(_viewModel.CurrentPageId);
+                _window.ReloadPages(devModeChanged ? "dev" : _viewModel.CurrentPageId);
                 _window.RefreshShellText();
             }
 
@@ -311,6 +312,31 @@ internal sealed class SettingsWindowService : ISettingsWindowService
         }, DispatcherPriority.Background);
     }
 
+    private void OnAppSettingsSaved(string instanceId)
+    {
+        Dispatcher.UIThread.Post(() =>
+        {
+            if (_window is null || _viewModel is null)
+            {
+                return;
+            }
+
+            var snapshot = _settingsFacade.Settings.LoadSnapshot<AppSettingsSnapshot>(SettingsScope.App);
+            var devPageVisible = _pageRegistry.GetPages().Any(p => p.PageId == "dev");
+
+            if (snapshot.IsDevModeEnabled && !devPageVisible)
+            {
+                _pageRegistry.Rebuild();
+                _window.ReloadPages("dev");
+            }
+            else if (!snapshot.IsDevModeEnabled && devPageVisible)
+            {
+                _pageRegistry.Rebuild();
+                _window.ReloadPages(null);
+            }
+        }, DispatcherPriority.Background);
+    }
+
     private void ApplyTheme(SettingsWindow window)
     {
         var appearanceSnapshot = _appearanceThemeService.GetCurrent();

LanMountainDesktop/ViewModels/SettingsViewModels.cs

@@ -3088,3 +3088,54 @@ public sealed class PluginGeneratedSettingsPageViewModel
 
     public string? Description { get; }
 }
+
+public sealed partial class DevSettingsPageViewModel : ViewModelBase
+{
+    private readonly ISettingsFacadeService _settingsFacade;
+    private bool _isInitializing;
+
+    public DevSettingsPageViewModel(ISettingsFacadeService settingsFacade)
+    {
+        _settingsFacade = settingsFacade;
+        _isInitializing = true;
+        LoadSettings();
+        _isInitializing = false;
+    }
+
+    [ObservableProperty]
+    private bool _isDevModeEnabled;
+
+    [ObservableProperty]
+    private string _devPluginPath = string.Empty;
+
+    partial void OnIsDevModeEnabledChanged(bool value)
+    {
+        if (_isInitializing) return;
+        SaveField(nameof(AppSettingsSnapshot.IsDevModeEnabled), value);
+    }
+
+    partial void OnDevPluginPathChanged(string value)
+    {
+        if (_isInitializing) return;
+        SaveField(nameof(AppSettingsSnapshot.DevPluginPath), value);
+    }
+
+    private void LoadSettings()
+    {
+        var snapshot = _settingsFacade.Settings.LoadSnapshot<AppSettingsSnapshot>(SettingsScope.App);
+        IsDevModeEnabled = snapshot.IsDevModeEnabled;
+        DevPluginPath = snapshot.DevPluginPath ?? string.Empty;
+    }
+
+    private void SaveField<T>(string key, T value)
+    {
+        var snapshot = _settingsFacade.Settings.LoadSnapshot<AppSettingsSnapshot>(SettingsScope.App);
+        var property = typeof(AppSettingsSnapshot).GetProperty(key);
+        if (property is not null && property.CanWrite)
+        {
+            property.SetValue(snapshot, value);
+        }
+
+        _settingsFacade.Settings.SaveSnapshot(SettingsScope.App, snapshot, changedKeys: [key]);
+    }
+}

LanMountainDesktop/Views/Components/ShortcutWidget.axaml

@@ -8,9 +8,6 @@
              x:Class="LanMountainDesktop.Views.Components.ShortcutWidget">
 
     <Border x:Name="RootBorder"
-            Background="{DynamicResource AdaptiveSurfaceRaisedBrush}"
-            BorderBrush="{DynamicResource AdaptiveButtonBorderBrush}"
-            BorderThickness="1"
             CornerRadius="{DynamicResource DesignCornerRadiusComponent}"
             ClipToBounds="True">
         <Grid RowDefinitions="*,Auto"

LanMountainDesktop/Views/Components/ShortcutWidget.axaml.cs

@@ -25,6 +25,7 @@ public partial class ShortcutWidget : UserControl, IDesktopComponentWidget, ICom
     private bool _showBackground = true;
     private double _currentCellSize = 48;
     private bool _isDisposed;
+    private bool _chromeApplied;
 
     private const double TapMovementThreshold = 10;
     private const long TapTimeThresholdMs = 500;
@@ -40,9 +41,32 @@ public partial class ShortcutWidget : UserControl, IDesktopComponentWidget, ICom
     {
         InitializeComponent();
         DoubleTapped += OnDoubleTapped;
+        Loaded += OnLoaded;
         UpdateDisplay();
     }
 
+    private void OnLoaded(object? sender, RoutedEventArgs e)
+    {
+        // ApplyChrome() may have been called before the control was attached to the visual tree,
+        // causing FindResource() to fail. Re-apply now that resources are available.
+        if (!_chromeApplied)
+        {
+            ApplyChrome();
+        }
+
+        // Subscribe to theme changes so the background follows theme updates.
+        var themeService = HostAppearanceThemeProvider.GetOrCreate();
+        themeService.Changed += OnAppearanceThemeChanged;
+    }
+
+    private void OnAppearanceThemeChanged(object? sender, AppearanceThemeSnapshot e)
+    {
+        if (_isDisposed || _showBackground)
+        {
+            ApplyChrome();
+        }
+    }
+
     public void SetComponentPlacementContext(string componentId, string? placementId)
     {
         _componentId = string.IsNullOrWhiteSpace(componentId)
@@ -258,13 +282,25 @@ public partial class ShortcutWidget : UserControl, IDesktopComponentWidget, ICom
             RootBorder.Background = Brushes.Transparent;
             RootBorder.BorderBrush = Brushes.Transparent;
             RootBorder.BorderThickness = new Thickness(0);
+            _chromeApplied = true;
             return;
         }
 
-        // 恢复默认的实心背景样式
-        RootBorder.Background = this.FindResource("AdaptiveSurfaceRaisedBrush") as IBrush ?? Brushes.Transparent;
-        RootBorder.BorderBrush = this.FindResource("AdaptiveButtonBorderBrush") as IBrush ?? Brushes.Transparent;
+        // FindResource requires the control to be attached to the visual tree.
+        // If it returns null, _chromeApplied stays false so OnLoaded will retry.
+        var background = this.FindResource("AdaptiveSurfaceRaisedBrush") as IBrush;
+        var borderBrush = this.FindResource("AdaptiveButtonBorderBrush") as IBrush;
+
+        if (background is null || borderBrush is null)
+        {
+            _chromeApplied = false;
+            return;
+        }
+
+        RootBorder.Background = background;
+        RootBorder.BorderBrush = borderBrush;
         RootBorder.BorderThickness = new Thickness(1);
+        _chromeApplied = true;
     }
 
     protected override void OnPointerPressed(PointerPressedEventArgs e)
@@ -391,6 +427,10 @@ public partial class ShortcutWidget : UserControl, IDesktopComponentWidget, ICom
         }
 
         _isDisposed = true;
+
+        var themeService = HostAppearanceThemeProvider.GetOrCreate();
+        themeService.Changed -= OnAppearanceThemeChanged;
+
         _gestureStates.Clear();
     }
 }

LanMountainDesktop/Views/SettingsPages/AboutSettingsPage.axaml

@@ -36,7 +36,8 @@
         <StackPanel Classes="about-page-container">
             <Border x:Name="AboutHeroCard"
                     Classes="about-hero-card"
-                    Height="240">
+                    Height="240"
+                    PointerPressed="OnAboutHeroCardPointerPressed">
                 <Image Source="/Assets/about_banner.png"
                        Stretch="Uniform"
                        HorizontalAlignment="Center"

LanMountainDesktop/Views/SettingsPages/AboutSettingsPage.axaml.cs

@@ -1,9 +1,16 @@
 using System;
+using System.Diagnostics;
 using Avalonia;
 using Avalonia.Controls;
+using Avalonia.Input;
+using Avalonia.VisualTree;
+using FluentAvalonia.UI.Controls;
+using LanMountainDesktop.Models;
 using LanMountainDesktop.PluginSdk;
+using LanMountainDesktop.Services;
 using LanMountainDesktop.Services.Settings;
 using LanMountainDesktop.ViewModels;
+using LanMountainDesktop.Views;
 
 namespace LanMountainDesktop.Views.SettingsPages;
 
@@ -19,6 +26,10 @@ namespace LanMountainDesktop.Views.SettingsPages;
 public partial class AboutSettingsPage : SettingsPageBase
 {
     private const double HeroAspectRatio = 9d / 16d;
+    private const int DevModeActivationClicks = 5;
+
+    private int _heroCardClickCount;
+    private DateTime _lastHeroCardClickTime = DateTime.MinValue;
 
     public AboutSettingsPage()
         : this(new AboutSettingsPageViewModel(HostSettingsFacadeProvider.GetOrCreate()))
@@ -60,4 +71,81 @@ public partial class AboutSettingsPage : SettingsPageBase
 
         AboutHeroCard.Height = targetHeight;
     }
+
+    private void OnAboutHeroCardPointerPressed(object? sender, PointerPressedEventArgs e)
+    {
+        var now = DateTime.UtcNow;
+        var elapsed = now - _lastHeroCardClickTime;
+
+        if (elapsed.TotalSeconds > 3)
+        {
+            _heroCardClickCount = 1;
+        }
+        else
+        {
+            _heroCardClickCount++;
+        }
+
+        _lastHeroCardClickTime = now;
+
+        var settingsFacade = HostSettingsFacadeProvider.GetOrCreate();
+        var snapshot = settingsFacade.Settings.LoadSnapshot<AppSettingsSnapshot>(SettingsScope.App);
+
+        if (snapshot.IsDevModeEnabled)
+        {
+            if (_heroCardClickCount >= 3)
+            {
+                _heroCardClickCount = 0;
+                Debug.WriteLine("[AboutSettingsPage] Developer mode is already enabled.");
+            }
+
+            return;
+        }
+
+        var remaining = DevModeActivationClicks - _heroCardClickCount;
+
+        if (remaining <= 0)
+        {
+            _heroCardClickCount = 0;
+            PromptEnableDevMode(settingsFacade);
+        }
+        else if (remaining <= 2)
+        {
+            Debug.WriteLine($"[AboutSettingsPage] 再点击 {remaining} 次即可启用开发者模式。");
+        }
+    }
+
+    private async void PromptEnableDevMode(ISettingsFacadeService settingsFacade)
+    {
+        var dialog = new ContentDialog
+        {
+            Title = "启用开发者模式",
+            Content = "开发者模式提供了插件调试、热重载等高级功能，仅供开发和调试用途。\n\n" +
+                      "请注意：开发者不对以非开发用途使用此功能造成的任何后果负责，也不接受以非开发用途使用时产生的 Bug 反馈。\n\n" +
+                      "确定要启用开发者模式吗？",
+            PrimaryButtonText = "启用",
+            CloseButtonText = "取消",
+            DefaultButton = ContentDialogButton.Close
+        };
+
+        var result = await dialog.ShowAsync();
+        if (result != ContentDialogResult.Primary)
+        {
+            return;
+        }
+
+        var snapshot = settingsFacade.Settings.LoadSnapshot<AppSettingsSnapshot>(SettingsScope.App);
+        snapshot.IsDevModeEnabled = true;
+        settingsFacade.Settings.SaveSnapshot(
+            SettingsScope.App,
+            snapshot,
+            changedKeys: [nameof(AppSettingsSnapshot.IsDevModeEnabled)]);
+
+        AppLogger.Info("DevMode", "Developer mode enabled via About page activation.");
+
+        if (this.FindAncestorOfType<SettingsWindow>() is { } settingsWindow)
+        {
+            settingsWindow.RebuildAndNavigateToDevPage();
+        }
+    }
 }

LanMountainDesktop/Views/SettingsPages/DevSettingsPage.axaml

@@ -0,0 +1,89 @@
+<UserControl xmlns="https://github.com/avaloniaui"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:vm="using:LanMountainDesktop.ViewModels"
+             xmlns:ui="using:FluentAvalonia.UI.Controls"
+             xmlns:fi="using:FluentIcons.Avalonia.Fluent"
+             x:Class="LanMountainDesktop.Views.SettingsPages.DevSettingsPage"
+             x:DataType="vm:DevSettingsPageViewModel">
+    <ScrollViewer VerticalScrollBarVisibility="Auto">
+        <StackPanel Classes="settings-page-container settings-page-animated">
+
+            <ui:InfoBar IsOpen="True"
+                        IsClosable="False"
+                        Severity="Warning"
+                        Title="开发者模式"
+                        Message="开发者模式仅供开发和调试用途。开发者不对以非开发用途使用此功能造成的任何后果负责。"
+                        Margin="0,0,0,16" />
+
+            <ui:SettingsExpander Header="启用开发者模式"
+                                 Description="启用后可使用插件调试、开发者插件路径等高级功能">
+                <ui:SettingsExpander.IconSource>
+                    <fi:SymbolIconSource Symbol="DeveloperBoard" />
+                </ui:SettingsExpander.IconSource>
+                <ui:SettingsExpander.Footer>
+                    <ToggleSwitch IsChecked="{Binding IsDevModeEnabled}" />
+                </ui:SettingsExpander.Footer>
+            </ui:SettingsExpander>
+
+            <Separator Classes="settings-separator" />
+
+            <ui:SettingsExpander Header="开发者插件路径"
+                                 Description="指定开发中的插件目录路径，无需打包即可直接加载。多个路径用分号分隔。">
+                <ui:SettingsExpander.IconSource>
+                    <fi:SymbolIconSource Symbol="FolderLink" />
+                </ui:SettingsExpander.IconSource>
+                <ui:SettingsExpanderItem>
+                    <TextBox Text="{Binding DevPluginPath}"
+                             Watermark="C:\path\to\plugin\bin\Debug\net10.0"
+                             Width="360"
+                             MinWidth="200" />
+                </ui:SettingsExpanderItem>
+            </ui:SettingsExpander>
+
+            <Separator Classes="settings-separator" />
+
+            <ui:SettingsExpander Header="命令行参数"
+                                 Description="也可以通过命令行参数或环境变量指定开发者插件路径">
+                <ui:SettingsExpander.IconSource>
+                    <fi:SymbolIconSource Symbol="WindowConsole" />
+                </ui:SettingsExpander.IconSource>
+                <ui:SettingsExpanderItem>
+                    <StackPanel Margin="0,8,0,0" Spacing="8">
+                        <TextBlock Text="命令行参数：" FontWeight="SemiBold" />
+                        <Border Background="{DynamicResource ControlFillColorDefaultBrush}"
+                                CornerRadius="8"
+                                Padding="12,8">
+                            <TextBlock FontFamily="Cascadia Code, Consolas, monospace"
+                                       FontSize="12"
+                                       Text="--dev-plugin &lt;path&gt;   或   -dp &lt;path&gt;"
+                                       TextWrapping="Wrap" />
+                        </Border>
+                        <TextBlock Text="环境变量：" FontWeight="SemiBold" Margin="0,8,0,0" />
+                        <Border Background="{DynamicResource ControlFillColorDefaultBrush}"
+                                CornerRadius="8"
+                                Padding="12,8">
+                            <TextBlock FontFamily="Cascadia Code, Consolas, monospace"
+                                       FontSize="12"
+                                       Text="LMD_DEV_PLUGIN=&lt;path&gt;"
+                                       TextWrapping="Wrap" />
+                        </Border>
+                        <TextBlock Text="其他参数：" FontWeight="SemiBold" Margin="0,8,0,0" />
+                        <Border Background="{DynamicResource ControlFillColorDefaultBrush}"
+                                CornerRadius="8"
+                                Padding="12,8">
+                            <StackPanel Spacing="4">
+                                <TextBlock FontFamily="Cascadia Code, Consolas, monospace"
+                                           FontSize="12"
+                                           Text="--dev-mode / -dev     启用开发者模式" />
+                                <TextBlock FontFamily="Cascadia Code, Consolas, monospace"
+                                           FontSize="12"
+                                           Text="--hot-reload / -hr    启用热重载（预留）" />
+                            </StackPanel>
+                        </Border>
+                    </StackPanel>
+                </ui:SettingsExpanderItem>
+            </ui:SettingsExpander>
+
+        </StackPanel>
+    </ScrollViewer>
+</UserControl>

LanMountainDesktop/Views/SettingsPages/DevSettingsPage.axaml.cs

@@ -0,0 +1,30 @@
+using LanMountainDesktop.PluginSdk;
+using LanMountainDesktop.Services.Settings;
+using LanMountainDesktop.ViewModels;
+
+namespace LanMountainDesktop.Views.SettingsPages;
+
+[SettingsPageInfo(
+    "dev",
+    "开发者",
+    SettingsPageCategory.Dev,
+    IconKey = "DeveloperBoard",
+    SortOrder = 0,
+    TitleLocalizationKey = "settings.dev.title",
+    DescriptionLocalizationKey = "settings.dev.description")]
+public partial class DevSettingsPage : SettingsPageBase
+{
+    public DevSettingsPage()
+        : this(new DevSettingsPageViewModel(HostSettingsFacadeProvider.GetOrCreate()))
+    {
+    }
+
+    public DevSettingsPage(DevSettingsPageViewModel viewModel)
+    {
+        ViewModel = viewModel;
+        DataContext = ViewModel;
+        InitializeComponent();
+    }
+
+    public DevSettingsPageViewModel ViewModel { get; }
+}

LanMountainDesktop/Views/SettingsWindow.axaml.cs

@@ -97,6 +97,12 @@ public partial class SettingsWindow : Window, ISettingsPageHostContext
         NavigateTo(pageId ?? ViewModel.Pages.FirstOrDefault()?.PageId);
     }
 
+    public void RebuildAndNavigateToDevPage()
+    {
+        _pageRegistry.Rebuild();
+        ReloadPages("dev");
+    }
+
     public void OpenDrawer(Control content, string? title = null)
     {
         if (DrawerContentHost is null)
@@ -734,8 +740,11 @@ public partial class SettingsWindow : Window, ISettingsPageHostContext
             "Info" => Symbol.Info,
             "ArrowSync" => Symbol.ArrowSync,
             "Hourglass" => Symbol.Hourglass,
-            "Alert" => Symbol.Alert,  // 铃铛图标
-            "Bell" => Symbol.Alert,   // Bell也映射到Alert图标
+            "Alert" => Symbol.Alert,
+            "Bell" => Symbol.Alert,
+            "DeveloperBoard" => Symbol.DeveloperBoard,
+            "FolderLink" => Symbol.FolderLink,
+            "WindowConsole" => Symbol.WindowConsole,
             _ => Symbol.Settings
         };
     }

LanMountainDesktop/plugins/DevPluginOptions.cs

@@ -0,0 +1,136 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+
+using LanMountainDesktop.Services;
+
+namespace LanMountainDesktop.Plugins;
+
+public sealed class DevPluginOptions
+{
+    private static readonly string[] DevPluginPathArgs = ["--dev-plugin", "-dp"];
+    private static readonly string[] DevModeArgs = ["--dev-mode", "-dev"];
+    private static readonly string[] HotReloadArgs = ["--hot-reload", "-hr"];
+    private static readonly string EnvDevPluginPath = "LMD_DEV_PLUGIN";
+    private static readonly string EnvDevMode = "LMD_DEV_MODE";
+
+    public static DevPluginOptions Current { get; } = new();
+
+    public bool IsDevMode { get; private set; }
+
+    public string? DevPluginPath { get; private set; }
+
+    public bool EnableHotReload { get; private set; }
+
+    public IReadOnlyList<string> DevPluginPaths { get; private set; } = Array.Empty<string>();
+
+    private DevPluginOptions() { }
+
+    public static DevPluginOptions Parse(string[] args)
+    {
+        var options = Current;
+
+        options.IsDevMode = TryGetFlag(args, DevModeArgs) ||
+                            string.Equals(Environment.GetEnvironmentVariable(EnvDevMode), "1", StringComparison.Ordinal) ||
+                            string.Equals(Environment.GetEnvironmentVariable(EnvDevMode), "true", StringComparison.OrdinalIgnoreCase);
+
+        options.DevPluginPath = TryGetValue(args, DevPluginPathArgs) ??
+                                Environment.GetEnvironmentVariable(EnvDevPluginPath)?.Trim();
+
+        options.EnableHotReload = TryGetFlag(args, HotReloadArgs);
+
+        if (!options.IsDevMode && !string.IsNullOrWhiteSpace(options.DevPluginPath))
+        {
+            options.IsDevMode = true;
+        }
+
+        options.DevPluginPaths = ResolveDevPluginPaths(options.DevPluginPath);
+
+        if (options.IsDevMode)
+        {
+            AppLogger.Info(
+                "DevPlugin",
+                $"Developer mode enabled. DevPluginPath='{options.DevPluginPath}'; EnableHotReload={options.EnableHotReload}; ResolvedPaths={options.DevPluginPaths.Count}.");
+        }
+
+        return options;
+    }
+
+    internal void ApplySettingsFromSnapshot(bool isDevMode, string? devPluginPath)
+    {
+        if (isDevMode && !IsDevMode)
+        {
+            IsDevMode = true;
+        }
+
+        if (!string.IsNullOrWhiteSpace(devPluginPath) && string.IsNullOrWhiteSpace(DevPluginPath))
+        {
+            DevPluginPath = devPluginPath;
+        }
+
+        var allPaths = new List<string>(DevPluginPaths);
+        if (!string.IsNullOrWhiteSpace(devPluginPath))
+        {
+            foreach (var path in ResolveDevPluginPaths(devPluginPath))
+            {
+                if (!allPaths.Contains(path, StringComparer.OrdinalIgnoreCase))
+                {
+                    allPaths.Add(path);
+                }
+            }
+        }
+
+        DevPluginPaths = allPaths;
+    }
+
+    private static IReadOnlyList<string> ResolveDevPluginPaths(string? rawPath)
+    {
+        if (string.IsNullOrWhiteSpace(rawPath))
+        {
+            return Array.Empty<string>();
+        }
+
+        var paths = rawPath.Split(';', StringSplitOptions.RemoveEmptyEntries | StringSplitOptions.TrimEntries);
+
+        var resolved = new List<string>();
+        foreach (var path in paths)
+        {
+            try
+            {
+                var fullPath = Path.GetFullPath(path);
+                if (Directory.Exists(fullPath) || File.Exists(fullPath))
+                {
+                    resolved.Add(fullPath);
+                }
+                else
+                {
+                    AppLogger.Warn("DevPlugin", $"Developer plugin path '{path}' does not exist. It will be skipped.");
+                }
+            }
+            catch (Exception ex)
+            {
+                AppLogger.Warn("DevPlugin", $"Failed to resolve developer plugin path '{path}': {ex.Message}");
+            }
+        }
+
+        return resolved;
+    }
+
+    private static bool TryGetFlag(string[] args, string[] names)
+    {
+        return args.Any(arg => names.Any(name => string.Equals(arg, name, StringComparison.OrdinalIgnoreCase)));
+    }
+
+    private static string? TryGetValue(string[] args, string[] names)
+    {
+        for (var i = 0; i < args.Length - 1; i++)
+        {
+            if (names.Any(name => string.Equals(args[i], name, StringComparison.OrdinalIgnoreCase)))
+            {
+                return args[i + 1]?.Trim();
+            }
+        }
+
+        return null;
+    }
+}

LanMountainDesktop/plugins/PluginCatalogEntry.cs

@@ -5,7 +5,8 @@ namespace LanMountainDesktop.Services;
 public enum PluginCatalogSourceKind
 {
     Package = 0,
-    Manifest = 1
+    Manifest = 1,
+    DevPlugin = 2
 }
 
 public sealed record PluginCatalogEntry(
@@ -16,4 +17,5 @@ public sealed record PluginCatalogEntry(
     bool IsLoaded,
     string? ErrorMessage,
     int SettingsPageCount,
-    int WidgetCount);
+    int WidgetCount,
+    bool IsDevPlugin = false);

LanMountainDesktop/plugins/PluginLoader.cs

@@ -146,7 +146,7 @@ public sealed class PluginLoader
         try
         {
             Directory.CreateDirectory(dataDirectory);
-            ValidatePluginRuntimeAssets(manifest, assemblyPath, pluginDirectory);
+            ValidatePluginRuntimeAssets(manifest, assemblyPath, pluginDirectory, _options.IsDevMode);
             AppLogger.Info(
                 "PluginLoader",
                 $"LoadCore starting. PluginId='{manifest.Id}'; AssemblyPath='{assemblyPath}'; PluginDirectory='{pluginDirectory}'; DataDirectory='{dataDirectory}'.");
@@ -721,13 +721,23 @@ public sealed class PluginLoader
     private static void ValidatePluginRuntimeAssets(
         PluginManifest manifest,
         string assemblyPath,
-        string pluginDirectory)
+        string pluginDirectory,
+        bool isDevMode)
     {
         var depsFilePath = Path.ChangeExtension(assemblyPath, ".deps.json");
         if (!File.Exists(depsFilePath))
         {
-            throw new InvalidOperationException(
-                $"Plugin '{manifest.Id}' targets API {PluginSdkInfo.ApiVersion} and must include '{Path.GetFileName(depsFilePath)}' next to its main assembly.");
+            if (isDevMode)
+            {
+                AppLogger.Warn(
+                    "PluginLoader",
+                    $"Plugin '{manifest.Id}' is missing '{Path.GetFileName(depsFilePath)}'. In developer mode this is allowed, but dependency resolution may fail at runtime.");
+            }
+            else
+            {
+                throw new InvalidOperationException(
+                    $"Plugin '{manifest.Id}' targets API {PluginSdkInfo.ApiVersion} and must include '{Path.GetFileName(depsFilePath)}' next to its main assembly.");
+            }
         }
 
         var runtimesDirectory = Path.Combine(pluginDirectory, "runtimes");

LanMountainDesktop/plugins/PluginLoaderOptions.cs

@@ -19,6 +19,8 @@ public sealed class PluginLoaderOptions
 
     public string PackagedDataDirectoryName { get; init; } = PluginSdkInfo.PackagedDataDirectoryName;
 
+    public bool IsDevMode { get; init; }
+
     public ISet<string> SharedAssemblyNames { get; } = new HashSet<string>(StringComparer.OrdinalIgnoreCase)
     {
         typeof(IPlugin).Assembly.GetName().Name!

LanMountainDesktop/plugins/PluginRuntimeService.cs

@@ -85,6 +85,7 @@ public sealed class PluginRuntimeService : IDisposable
         Directory.CreateDirectory(PluginsDirectory);
         ApplyPendingPluginDeletions();
         UnloadInstalledPlugins();
+        MergeDevSettingsFromSnapshot();
         AppLogger.Info("PluginRuntime", $"Loading installed plugins from '{PluginsDirectory}'.");
 
         var disabledPluginIds = GetDisabledPluginIds();
@@ -108,19 +109,30 @@ public sealed class PluginRuntimeService : IDisposable
         var selectedPluginIds = new HashSet<string>(StringComparer.OrdinalIgnoreCase);
         foreach (var candidate in candidates)
         {
+            var isDevPlugin = candidate.SourceKind == PluginCatalogSourceKind.DevPlugin;
+
             if (!selectedPluginIds.Add(candidate.Manifest.Id))
             {
-                var duplicateFailure = PluginLoadResult.Failure(
-                    candidate.SourcePath,
-                    candidate.Manifest,
-                    new InvalidOperationException(
-                        $"Duplicate plugin id '{candidate.Manifest.Id}' was found. Source '{candidate.SourcePath}' was ignored because a higher-priority source was already selected."));
-                _loadResults.Add(duplicateFailure);
-                LogPluginFailure("CatalogSelection", duplicateFailure, treatAsError: false);
-                continue;
+                if (isDevPlugin)
+                {
+                    AppLogger.Info(
+                        "DevPlugin",
+                        $"Developer plugin '{candidate.Manifest.Id}' overrides an already-registered plugin from '{candidate.SourcePath}'.");
+                }
+                else
+                {
+                    var duplicateFailure = PluginLoadResult.Failure(
+                        candidate.SourcePath,
+                        candidate.Manifest,
+                        new InvalidOperationException(
+                            $"Duplicate plugin id '{candidate.Manifest.Id}' was found. Source '{candidate.SourcePath}' was ignored because a higher-priority source was already selected."));
+                    _loadResults.Add(duplicateFailure);
+                    LogPluginFailure("CatalogSelection", duplicateFailure, treatAsError: false);
+                    continue;
+                }
             }
 
-            var isEnabled = !disabledPluginIds.Contains(candidate.Manifest.Id);
+            var isEnabled = isDevPlugin || !disabledPluginIds.Contains(candidate.Manifest.Id);
             if (!isEnabled)
             {
                 _catalog.Add(new PluginCatalogEntry(
@@ -172,6 +184,10 @@ public sealed class PluginRuntimeService : IDisposable
                     PluginsDirectory,
                     services: _hostServices,
                     hostProperties),
+                PluginCatalogSourceKind.DevPlugin => _loader.LoadFromManifest(
+                    candidate.SourcePath,
+                    services: _hostServices,
+                    hostProperties),
                 _ => _loader.LoadFromManifest(
                     candidate.SourcePath,
                     services: _hostServices,
@@ -192,7 +208,8 @@ public sealed class PluginRuntimeService : IDisposable
                     true,
                     null,
                     loadResult.LoadedPlugin.SettingsSections.Count,
-                    loadResult.LoadedPlugin.DesktopComponents.Count));
+                    loadResult.LoadedPlugin.DesktopComponents.Count,
+                    IsDevPlugin: isDevPlugin));
                 AppLogger.Info(
                     "PluginRuntime",
                     $"Plugin loaded. PluginId='{loadResult.LoadedPlugin.Manifest.Id}'; SourcePath='{loadResult.SourcePath}'; ManifestVersion='{loadResult.LoadedPlugin.Manifest.Version ?? "<unknown>"}'; ApiVersion='{loadResult.LoadedPlugin.Manifest.ApiVersion ?? "<unknown>"}'; SourceKind='{candidate.SourceKind}'; SettingsSections={loadResult.LoadedPlugin.SettingsSections.Count}; Widgets={loadResult.LoadedPlugin.DesktopComponents.Count}; Editors={loadResult.LoadedPlugin.DesktopComponentEditors.Count}.");
@@ -208,7 +225,8 @@ public sealed class PluginRuntimeService : IDisposable
                 false,
                 loadResult.Error?.Message,
                 0,
-                0));
+                0,
+                IsDevPlugin: isDevPlugin));
             LogPluginFailure("Load", loadResult, treatAsError: true);
             Debug.WriteLine($"[PluginRuntime] Failed to load plugin from '{loadResult.SourcePath}': {loadResult.Error}");
         }
@@ -229,6 +247,14 @@ public sealed class PluginRuntimeService : IDisposable
             return false;
         }
 
+        var catalogEntry = _catalog.FirstOrDefault(entry =>
+            string.Equals(entry.Manifest.Id, pluginId, StringComparison.OrdinalIgnoreCase));
+        if (catalogEntry.IsDevPlugin && !isEnabled)
+        {
+            AppLogger.Warn("DevPlugin", $"Cannot disable developer plugin '{pluginId}'. Developer plugins are always enabled in dev mode.");
+            return false;
+        }
+
         var snapshot = LoadAppSettingsSnapshot();
         var disabledPluginIds = snapshot.DisabledPluginIds is { Count: > 0 }
             ? new HashSet<string>(snapshot.DisabledPluginIds, StringComparer.OrdinalIgnoreCase)
@@ -459,12 +485,74 @@ public sealed class PluginRuntimeService : IDisposable
             }
         }
 
+        DiscoverDevPluginCandidates(candidates, failures);
+
         return candidates
-            .OrderBy(candidate => candidate.SourceKind)
+            .OrderByDescending(candidate => candidate.SourceKind)
             .ThenBy(candidate => candidate.SourcePath, StringComparer.OrdinalIgnoreCase)
             .ToArray();
     }
 
+    private void DiscoverDevPluginCandidates(List<PluginCandidate> candidates, List<PluginLoadResult> failures)
+    {
+        var devOptions = DevPluginOptions.Current;
+        if (!devOptions.IsDevMode || devOptions.DevPluginPaths.Count == 0)
+        {
+            return;
+        }
+
+        AppLogger.Info("DevPlugin", $"Scanning developer plugin paths. Count={devOptions.DevPluginPaths.Count}.");
+
+        foreach (var devPath in devOptions.DevPluginPaths)
+        {
+            if (File.Exists(devPath) && string.Equals(Path.GetExtension(devPath), PluginSdkInfo.PackageFileExtension, StringComparison.OrdinalIgnoreCase))
+            {
+                try
+                {
+                    var manifest = ReadManifestFromPackage(devPath);
+                    candidates.Add(new PluginCandidate(devPath, manifest, PluginCatalogSourceKind.DevPlugin));
+                    AppLogger.Info("DevPlugin", $"Found developer plugin package. PluginId='{manifest.Id}'; Path='{devPath}'.");
+                }
+                catch (Exception ex)
+                {
+                    var failure = PluginLoadResult.Failure(devPath, null, ex);
+                    failures.Add(failure);
+                    AppLogger.Warn("DevPlugin", $"Failed to read developer plugin package '{devPath}'.", ex);
+                }
+
+                continue;
+            }
+
+            if (Directory.Exists(devPath))
+            {
+                var manifestPath = Path.Combine(devPath, PluginSdkInfo.ManifestFileName);
+                if (File.Exists(manifestPath))
+                {
+                    try
+                    {
+                        var manifest = PluginManifest.Load(manifestPath);
+                        candidates.Add(new PluginCandidate(manifestPath, manifest, PluginCatalogSourceKind.DevPlugin));
+                        AppLogger.Info("DevPlugin", $"Found developer plugin manifest. PluginId='{manifest.Id}'; Path='{manifestPath}'.");
+                    }
+                    catch (Exception ex)
+                    {
+                        var failure = PluginLoadResult.Failure(manifestPath, null, ex);
+                        failures.Add(failure);
+                        AppLogger.Warn("DevPlugin", $"Failed to load developer plugin manifest '{manifestPath}'.", ex);
+                    }
+                }
+                else
+                {
+                    AppLogger.Warn("DevPlugin", $"Developer plugin directory '{devPath}' does not contain '{PluginSdkInfo.ManifestFileName}'. Skipping.");
+                }
+
+                continue;
+            }
+
+            AppLogger.Warn("DevPlugin", $"Developer plugin path '{devPath}' is neither a file nor a directory. Skipping.");
+        }
+    }
+
     private IEnumerable<string> EnumerateCandidatePaths(string searchPattern)
     {
         var runtimeRootDirectory = EnsureTrailingSeparator(Path.Combine(Path.GetFullPath(PluginsDirectory), ".runtime"));
@@ -582,7 +670,8 @@ public sealed class PluginRuntimeService : IDisposable
 
     private static PluginLoaderOptions CreateOptions()
     {
-        var options = new PluginLoaderOptions();
+        var devOptions = DevPluginOptions.Current;
+        var options = new PluginLoaderOptions { IsDevMode = devOptions.IsDevMode };
         AddSharedAssembly(options, typeof(App).Assembly);
         AddSharedAssembly(options, typeof(IServiceCollection).Assembly);
         AddSharedAssembly(options, typeof(HostBuilderContext).Assembly);
@@ -614,6 +703,31 @@ public sealed class PluginRuntimeService : IDisposable
         }
     }
 
+    private void MergeDevSettingsFromSnapshot()
+    {
+        var devOptions = DevPluginOptions.Current;
+
+        try
+        {
+            var snapshot = LoadAppSettingsSnapshot();
+
+            if (snapshot.IsDevModeEnabled && !devOptions.IsDevMode)
+            {
+                devOptions.ApplySettingsFromSnapshot(isDevMode: true, devPluginPath: snapshot.DevPluginPath);
+                AppLogger.Info("DevPlugin", $"Developer mode enabled via settings. DevPluginPath='{snapshot.DevPluginPath}'.");
+            }
+            else if (!string.IsNullOrWhiteSpace(snapshot.DevPluginPath) && string.IsNullOrWhiteSpace(devOptions.DevPluginPath))
+            {
+                devOptions.ApplySettingsFromSnapshot(isDevMode: devOptions.IsDevMode, devPluginPath: snapshot.DevPluginPath);
+                AppLogger.Info("DevPlugin", $"Developer plugin path merged from settings. DevPluginPath='{snapshot.DevPluginPath}'.");
+            }
+        }
+        catch (Exception ex)
+        {
+            AppLogger.Warn("DevPlugin", "Failed to merge developer settings from snapshot.", ex);
+        }
+    }
+
     private void CollectContributions(LoadedPlugin loadedPlugin)
     {
         _exportRegistry.ReplaceExports(loadedPlugin.Manifest.Id, loadedPlugin.ExportedServices);
@@ -826,6 +940,13 @@ public sealed class PluginRuntimeService : IDisposable
         _settingsCatalogService.RemovePluginSections(pluginId);
     }
 
+    private enum PluginCatalogSourceKind
+    {
+        Package = 0,
+        Manifest = 1,
+        DevPlugin = 2
+    }
+
     private sealed record PluginCandidate(
         string SourcePath,
         PluginManifest Manifest,

README.md

@@ -87,7 +87,7 @@ dotnet new install LanMountainDesktop.PluginTemplate
 dotnet new lmd-plugin -n MyPlugin
 ```
 
-- **Plugin SDK**: `LanMountainDesktop.PluginSdk` (API 4.0.0)
+- **Plugin SDK**: `LanMountainDesktop.PluginSdk` (API 4.0.1)
 - **共享契约**: `LanMountainDesktop.Shared.Contracts`
 - **迁移指南**: [PLUGIN_SDK_V4_MIGRATION.md](docs/PLUGIN_SDK_V4_MIGRATION.md)
 

docs/PRODUCT.md

@@ -39,7 +39,7 @@
 ### 当前阶段
 
 - 产品版本：`1.0.0`
-- Plugin SDK API 基线：`4.0.0`
+- Plugin SDK API 基线：`4.0.1`
 - 当前重点：持续完善宿主体验、设置页体验、组件能力与插件生态
 - 近期需求入口：以 `.trae/specs/` 中的 feature spec 为准
 
@@ -59,4 +59,4 @@
 
 LanMountainDesktop is a cross-platform desktop enhancement product built with Avalonia UI and .NET 10. It targets students, office users, and customization-focused users who want a programmable desktop surface for information, tools, and plugin-driven extensions.
 
-This repository is the source of truth for the desktop host, plugin runtime, Plugin SDK, shared contracts, and core appearance/settings infrastructure. The current product version is `1.0.0`, and the active Plugin SDK baseline in this repository is `4.0.0`.
+This repository is the source of truth for the desktop host, plugin runtime, Plugin SDK, shared contracts, and core appearance/settings infrastructure. The current product version is `1.0.0`, and the active Plugin SDK baseline in this repository is `4.0.1`.