试试

LanMountainDesktop.Launcher/Assets/public-key.pem

@@ -0,0 +1,8 @@
+-----BEGIN RSA PUBLIC KEY-----
+MIIBCgKCAQEAxPqgXsrnG8Re0kV4HBb+x61HQpjCahJoilzKvvlnXanuGtGxbjZT
+B+kMzmPUwyx8gt1fcaBNoKPwpwP0UZRWjvJDZQ++5ex7LGGw0YRWtJmeeigS17YI
+90vEfX3xQ5InJoBKnndsRy2a742chE6YwHGrJ4b107ZJ+zd26FmokQS47Uzay3go
+msbQHdehwCdCiW1mh8YFDm0xny+PYoYZkGXiDOYY0nvg4yJ/BG2fQkkC5TNizr0l
+YcE3RrMRcyJB7zU3jN1QnjHIvIvwfCOXaLdcXtxgQFRv45sYpmj9amNjuurM5iUa
+20Mk1ilYBuLxqe6P9C8DakZY/akVxpzxrQIDAQAB
+-----END RSA PUBLIC KEY-----

LanMountainDesktop.Launcher/LanMountainDesktop.Launcher.csproj

@@ -19,6 +19,30 @@
     <PackageReference Include="Avalonia.Themes.Fluent" Version="11.3.12" />
     <PackageReference Include="Avalonia.Fonts.Inter" Version="11.3.12" />
     <PackageReference Include="Microsoft.Windows.CsWin32" Version="0.3.106" PrivateAssets="all" />
+    <PackageReference Include="Tmds.DBus.Protocol" Version="0.92.0" />
   </ItemGroup>
 
+  <!-- Embed public-key.pem and copy to .launcher/update/ in output directory -->
+  <ItemGroup>
+    <None Include="Assets\public-key.pem" CopyToOutputDirectory="PreserveNewest" />
+  </ItemGroup>
+
+  <Target Name="CopyPublicKeyToLauncherDir" AfterTargets="Build">
+    <PropertyGroup>
+      <PublicKeySource>$(MSBuildProjectDirectory)\Assets\public-key.pem</PublicKeySource>
+      <PublicKeyDestDir>$(OutDir).launcher\update</PublicKeyDestDir>
+    </PropertyGroup>
+    <MakeDir Directories="$(PublicKeyDestDir)" />
+    <Copy SourceFiles="$(PublicKeySource)" DestinationFolder="$(PublicKeyDestDir)" SkipUnchangedFiles="true" />
+  </Target>
+
+  <Target Name="CopyPublicKeyToPublishDir" AfterTargets="Publish">
+    <PropertyGroup>
+      <PublishedKeySource>$(MSBuildProjectDirectory)\Assets\public-key.pem</PublishedKeySource>
+      <PublishedKeyDestDir>$(PublishDir).launcher\update</PublishedKeyDestDir>
+    </PropertyGroup>
+    <MakeDir Directories="$(PublishedKeyDestDir)" />
+    <Copy SourceFiles="$(PublishedKeySource)" DestinationFolder="$(PublishedKeyDestDir)" SkipUnchangedFiles="true" />
+  </Target>
+
 </Project>

LanMountainDesktop.Launcher/Services/Commands.cs

@@ -89,7 +89,7 @@ internal static class Commands
         return context.SubCommand.ToLowerInvariant() switch
         {
             "check" => updateEngine.CheckPendingUpdate(),
-            "apply" => updateEngine.ApplyPendingUpdate(),
+            "apply" => await updateEngine.ApplyPendingUpdateAsync().ConfigureAwait(false),
             "rollback" => updateEngine.RollbackLatest(),
             "download" => await updateEngine.DownloadAsync(
                 context.GetOption("manifest-url") ?? throw new InvalidOperationException("Missing --manifest-url."),

LanMountainDesktop.Launcher/Services/DeferredSplashStageReporter.cs

@@ -0,0 +1,32 @@
+using Avalonia.Threading;
+using LanMountainDesktop.Launcher.Views;
+
+namespace LanMountainDesktop.Launcher.Services;
+
+internal sealed class DeferredSplashStageReporter : ISplashStageReporter
+{
+    private ISplashStageReporter? _inner;
+    private readonly List<(string Stage, string Message)> _pending = [];
+
+    public void SetInner(ISplashStageReporter inner)
+    {
+        _inner = inner;
+        foreach (var (stage, message) in _pending)
+        {
+            _inner.Report(stage, message);
+        }
+        _pending.Clear();
+    }
+
+    public void Report(string stage, string message)
+    {
+        if (_inner is not null)
+        {
+            _inner.Report(stage, message);
+        }
+        else
+        {
+            _pending.Add((stage, message));
+        }
+    }
+}

LanMountainDesktop.Launcher/Services/LauncherFlowCoordinator.cs

@@ -13,7 +13,6 @@ internal sealed class LauncherFlowCoordinator
     private readonly UpdateEngineService _updateEngine;
     private readonly UpdateCheckService _updateCheckService;
     private readonly PluginInstallerService _pluginInstallerService;
-    private readonly ISplashStageReporter _splashStageReporter;
     private readonly IReadOnlyList<IOobeStep> _oobeSteps;
 
     public LauncherFlowCoordinator(
@@ -30,7 +29,6 @@ internal sealed class LauncherFlowCoordinator
         _updateEngine = updateEngine;
         _updateCheckService = updateCheckService;
         _pluginInstallerService = pluginInstallerService;
-        _splashStageReporter = new NullSplashStageReporter();
         _oobeSteps = [new WelcomeOobeStep(_oobeStateService)];
     }
 
@@ -41,7 +39,6 @@ internal sealed class LauncherFlowCoordinator
             // 清理待删除的旧版本
             _deploymentLocator.CleanupDestroyedDeployments();
 
-            _splashStageReporter.Report("bootstrap", "bootstrap");
             if (_oobeStateService.IsFirstRun())
             {
                 foreach (var step in _oobeSteps)
@@ -57,16 +54,18 @@ internal sealed class LauncherFlowCoordinator
                 return window;
             });
 
+            var reporter = (ISplashStageReporter)splashWindow;
+
             try
             {
-                _splashStageReporter.Report("silentUpdate", "update");
-                var updateResult = _updateEngine.ApplyPendingUpdate();
+                reporter.Report("silentUpdate", "update");
+                var updateResult = await _updateEngine.ApplyPendingUpdateAsync().ConfigureAwait(false);
                 if (!updateResult.Success)
                 {
                     return updateResult;
                 }
 
-                _splashStageReporter.Report("pluginTasks", "plugins");
+                reporter.Report("pluginTasks", "plugins");
                 var pluginsDir = _context.GetOption("plugins-dir")
                                  ?? Path.Combine(_deploymentLocator.GetAppRoot(), "plugins");
                 var queueResult = new PluginUpgradeQueueService(_pluginInstallerService).ApplyPendingUpgrades(pluginsDir);
@@ -75,7 +74,7 @@ internal sealed class LauncherFlowCoordinator
                     return queueResult;
                 }
 
-                _splashStageReporter.Report("launchHost", "launch");
+                reporter.Report("launchHost", "launch");
                 var hostResult = LaunchHost();
                 if (!hostResult.Success)
                 {
@@ -192,13 +191,4 @@ internal sealed class LauncherFlowCoordinator
             }
         }
     }
-
-    private sealed class NullSplashStageReporter : ISplashStageReporter
-    {
-        public void Report(string stage, string message)
-        {
-            _ = stage;
-            _ = message;
-        }
-    }
 }

LanMountainDesktop.Launcher/Services/UpdateEngineService.cs

@@ -110,7 +110,7 @@ internal sealed class UpdateEngineService
         };
     }
 
-    public LauncherResult ApplyPendingUpdate()
+    public async Task<LauncherResult> ApplyPendingUpdateAsync()
     {
         Directory.CreateDirectory(_incomingRoot);
         Directory.CreateDirectory(_snapshotsRoot);
@@ -136,7 +136,7 @@ internal sealed class UpdateEngineService
             return Failed("update.apply", "signature_failed", verifyResult.Message);
         }
 
-        var fileMapText = File.ReadAllText(fileMapPath);
+        var fileMapText = await File.ReadAllTextAsync(fileMapPath);
         var fileMap = JsonSerializer.Deserialize<SignedFileMap>(fileMapText);
         if (fileMap is null || fileMap.Files.Count == 0)
         {

LanMountainDesktop.Launcher/Views/SplashWindow.axaml

@@ -3,15 +3,38 @@
         x:Class="LanMountainDesktop.Launcher.Views.SplashWindow"
         Title="阑山桌面"
         Width="420"
-        Height="220"
+        Height="240"
         CanResize="False"
         WindowStartupLocation="CenterScreen"
         SystemDecorations="None">
-  <Grid Margin="24">
+  <Grid Margin="24" RowDefinitions="*,Auto,Auto,Auto">
     <TextBlock x:Name="AppNameText"
                Text="阑山桌面"
                FontSize="34"
                VerticalAlignment="Center"
-               HorizontalAlignment="Center" />
+               HorizontalAlignment="Center"
+               Grid.Row="0" />
+    <ProgressBar x:Name="ProgressIndicator"
+                 Grid.Row="1"
+                 Minimum="0"
+                 Maximum="100"
+                 Value="0"
+                 Height="4"
+                 Margin="0,12,0,0"
+                 IsIndeterminate="True" />
+    <TextBlock x:Name="StageText"
+               Grid.Row="2"
+               FontSize="12"
+               Foreground="#999999"
+               HorizontalAlignment="Center"
+               Margin="0,8,0,0"
+               Text="" />
+    <TextBlock x:Name="DetailText"
+               Grid.Row="3"
+               FontSize="11"
+               Foreground="#BBBBBB"
+               HorizontalAlignment="Center"
+               Margin="0,2,0,0"
+               Text="" />
   </Grid>
 </Window>

LanMountainDesktop.Launcher/Views/SplashWindow.axaml.cs

@@ -1,12 +1,48 @@
 using Avalonia.Controls;
 using Avalonia.Markup.Xaml;
+using LanMountainDesktop.Launcher.Services;
 
 namespace LanMountainDesktop.Launcher.Views;
 
-internal partial class SplashWindow : Window
+internal partial class SplashWindow : Window, ISplashStageReporter
 {
+    private static readonly (string Stage, string Label, double Progress)[] StageMap =
+    [
+        ("bootstrap", "正在初始化...", 10),
+        ("silentUpdate", "正在应用更新...", 35),
+        ("pluginTasks", "正在处理插件...", 65),
+        ("launchHost", "正在启动...", 90),
+    ];
+
     public SplashWindow()
     {
         AvaloniaXamlLoader.Load(this);
     }
+
+    public void Report(string stage, string message)
+    {
+        var (label, progress) = ResolveStageInfo(stage);
+
+        var stageText = this.GetControl<TextBlock>("StageText");
+        var detailText = this.GetControl<TextBlock>("DetailText");
+        var progressIndicator = this.GetControl<ProgressBar>("ProgressIndicator");
+
+        stageText.Text = label;
+        detailText.Text = message;
+        progressIndicator.IsIndeterminate = false;
+        progressIndicator.Value = progress;
+    }
+
+    private static (string Label, double Progress) ResolveStageInfo(string stage)
+    {
+        foreach (var (s, label, progress) in StageMap)
+        {
+            if (string.Equals(s, stage, StringComparison.OrdinalIgnoreCase))
+            {
+                return (label, progress);
+            }
+        }
+
+        return (stage, 0);
+    }
 }