changed.优化了更新体验

.github/workflows/release.yml

@@ -219,8 +219,10 @@ jobs:
           Move-Item -Path $newStructure -Destination $publishDir -Force
         shell: pwsh
 
-      - name: Install Inno Setup
-        run: choco install innosetup -y --no-progress
+      - name: Install Inno Setup and 7z
+        run: |
+          choco install innosetup -y --no-progress
+          choco install 7zip -y --no-progress
         shell: pwsh
 
       - name: Build Installer
@@ -314,18 +316,41 @@ jobs:
           Write-Host "Installer size: $([Math]::Round($installerFile.Length / 1MB, 2)) MB"
         shell: pwsh
 
-      - name: Generate Delta Package
+      - name: Create App Package
         if: matrix.self_contained == true && matrix.arch == 'x64'
         run: |
           $version = "${{ needs.prepare.outputs.version }}"
-          $publishDir = "publish/windows-${{ matrix.arch }}"
+          $arch = "${{ matrix.arch }}"
+          $publishDir = "publish/windows-$arch"
           $appDir = "app-$version"
           $currentAppPath = Join-Path $publishDir $appDir
           $outputDir = "delta-output"
 
           New-Item -ItemType Directory -Path $outputDir -Force | Out-Null
 
-          # --- Determine previous version and download its update.zip for diff ---
+          # 创建 app-{version}-win-{arch}.zip 供后续版本作为旧版本对比
+          $appZipPath = Join-Path $outputDir "app-$version-win-$arch.zip"
+          Write-Host "Creating app-$version-win-$arch.zip..."
+          Compress-Archive -Path "$currentAppPath\*" -DestinationPath $appZipPath -CompressionLevel Optimal
+
+          $sizeMB = [Math]::Round((Get-Item $appZipPath).Length / 1MB, 2)
+          Write-Host "Created app-$version-win-$arch.zip: $sizeMB MB"
+        shell: pwsh
+
+      - name: Generate Delta Package
+        if: matrix.self_contained == true && matrix.arch == 'x64'
+        run: |
+          $version = "${{ needs.prepare.outputs.version }}"
+          $arch = "${{ matrix.arch }}"
+          $publishDir = "publish/windows-$arch"
+          $appDir = "app-$version"
+          $currentAppPath = Join-Path $publishDir $appDir
+          $outputDir = "delta-output"
+          $scriptPath = "scripts/Generate-DeltaPackage.ps1"
+
+          New-Item -ItemType Directory -Path $outputDir -Force | Out-Null
+
+          # --- Determine previous version and download its app package for diff ---
           $previousVersion = $null
           $previousAppPath = $null
           try {
@@ -336,128 +361,73 @@ jobs:
               $previousVersion = $previousRelease.tag_name.TrimStart('v','V')
               Write-Host "Previous release version: $previousVersion"
 
-              # Try to download update.zip from previous release for diff
-              $prevUpdateZip = $previousRelease.assets | Where-Object { $_.name -eq "update.zip" } | Select-Object -First 1
-              if ($prevUpdateZip) {
-                Write-Host "Found update.zip in previous release - extracting for diff..."
-                $prevZipDest = Join-Path $outputDir "prev-update.zip"
-                Invoke-WebRequest -Uri $prevUpdateZip.browser_download_url -OutFile $prevZipDest -Headers $headers
+              # 下载旧版本的 app-{version}-win-{arch}.zip
+              $prevAppZip = $previousRelease.assets | Where-Object { $_.name -eq "app-$previousVersion-win-$arch.zip" } | Select-Object -First 1
+              if ($prevAppZip) {
+                Write-Host "Found app-$previousVersion-win-$arch.zip in previous release - downloading for diff..."
+                $prevAppZipDest = Join-Path $outputDir "prev-app.zip"
+                Invoke-WebRequest -Uri $prevAppZip.browser_download_url -OutFile $prevAppZipDest -Headers $headers
 
+                # 解压 app-{version}.zip
                 $previousAppPath = Join-Path $outputDir "prev-app"
                 New-Item -ItemType Directory -Path $previousAppPath -Force | Out-Null
-                Expand-Archive -Path $prevZipDest -DestinationPath $previousAppPath -Force
-                Remove-Item -Path $prevZipDest -Force
+                Expand-Archive -Path $prevAppZipDest -DestinationPath $previousAppPath -Force
+                Remove-Item -Path $prevAppZipDest -Force -ErrorAction SilentlyContinue
 
-                $prevFileCount = (Get-ChildItem -Path $previousAppPath -Recurse -File).Count
-                Write-Host "Extracted $prevFileCount files from previous version for diff"
+                if ($previousAppPath -and (Test-Path $previousAppPath)) {
+                  $prevFileCount = (Get-ChildItem -Path $previousAppPath -Recurse -File).Count
+                  Write-Host "Extracted $prevFileCount files from previous version for diff"
+                }
               } else {
-                Write-Host "No update.zip found in previous release - will generate full package"
+                Write-Host "No app-$previousVersion-win-$arch.zip found in previous release - will generate full package"
+                Write-Host "This is expected for the first release after this fix."
               }
             }
           } catch {
             Write-Host "Could not fetch previous release: $_"
           }
 
-          # --- Generate file manifest with diff against previous version ---
-          Write-Host "Generating update package for version $version..."
-          $files = Get-ChildItem -Path $currentAppPath -Recurse -File
-          $fileEntries = [System.Collections.ArrayList]::new()
-          $changedFiles = [System.Collections.ArrayList]::new()
-          $reusedCount = 0
-          $addedCount = 0
-          $replacedCount = 0
-          $deletedCount = 0
+          # --- Generate delta package using the script ---
+          if ($previousAppPath -and (Test-Path $previousAppPath) -and $previousVersion) {
+            Write-Host "Generating delta package from $previousVersion to $version..."
+            & $scriptPath `
+              -PreviousVersion $previousVersion `
+              -CurrentVersion $version `
+              -PreviousDir $previousAppPath `
+              -CurrentDir $currentAppPath `
+              -OutputDir $outputDir
 
-          # Build hash map of previous version files for quick lookup
-          $prevHashMap = @{}
-          if ($previousAppPath -and (Test-Path $previousAppPath)) {
-            $prevFiles = Get-ChildItem -Path $previousAppPath -Recurse -File
-            foreach ($pf in $prevFiles) {
-              $relPath = $pf.FullName.Substring($previousAppPath.Length).TrimStart('\', '/').Replace('\', '/')
-              if ($relPath -match '^\.(current|partial|destroy)$') { continue }
-              $prevHashMap[$relPath] = (Get-FileHash -Path $pf.FullName -Algorithm SHA256).Hash.ToLower()
+            if ($LASTEXITCODE -ne 0) {
+              Write-Error "Generate-DeltaPackage.ps1 failed"
+              exit 1
             }
-            Write-Host "Previous version has $($prevHashMap.Count) files for comparison"
-          }
-
-          foreach ($file in $files) {
-            $relativePath = $file.FullName.Substring($currentAppPath.Length).TrimStart('\', '/')
-            $relativePath = $relativePath.Replace('\', '/')
-
-            # Skip deployment marker files
-            if ($relativePath -match '^\.(current|partial|destroy)$') {
-              continue
-            }
-
-            $hash = (Get-FileHash -Path $file.FullName -Algorithm SHA256).Hash.ToLower()
-
-            if ($prevHashMap.ContainsKey($relativePath)) {
-              $prevHash = $prevHashMap[$relativePath]
-              if ($hash -eq $prevHash) {
-                $fileEntries += @{ Path = $relativePath; Action = "reuse"; Sha256 = $hash }
-                $reusedCount++
-              } else {
-                $fileEntries += @{ Path = $relativePath; Action = "replace"; Sha256 = $hash; ArchivePath = $relativePath }
-                $changedFiles += $file
-                $replacedCount++
-              }
-              $prevHashMap.Remove($relativePath)
-            } else {
-              $fileEntries += @{ Path = $relativePath; Action = "add"; Sha256 = $hash; ArchivePath = $relativePath }
-              $changedFiles += $file
-              $addedCount++
-            }
-          }
-
-          # Files in previous version but not in current = deleted
-          foreach ($deletedPath in $prevHashMap.Keys) {
-            $fileEntries += @{ Path = $deletedPath; Action = "delete" }
-            $deletedCount++
-          }
-
-          Write-Host "Delta summary: $reusedCount reused, $replacedCount replaced, $addedCount added, $deletedCount deleted"
-          Write-Host "Changed files to include in update.zip: $($changedFiles.Count)"
-
-          $filesJson = @{
-            FromVersion = $previousVersion
-            ToVersion = $version
-            Platform = "windows"
-            Arch = "x64"
-            Files = $fileEntries
-          } | ConvertTo-Json -Depth 10
-
-          $filesJsonPath = Join-Path $outputDir "files.json"
-          $filesJson | Set-Content -Path $filesJsonPath -Encoding UTF8
-          Write-Host "Generated files.json with $($fileEntries.Count) entries"
-
-          # Create update.zip with only changed files
-          $tempDir = Join-Path $outputDir "temp_staging"
-          New-Item -ItemType Directory -Path $tempDir -Force | Out-Null
-          foreach ($file in $changedFiles) {
-            $relativePath = $file.FullName.Substring($currentAppPath.Length).TrimStart('\', '/')
-            $destPath = Join-Path $tempDir $relativePath
-            $destDir = Split-Path -Parent $destPath
-            if (-not (Test-Path $destDir)) { New-Item -ItemType Directory -Path $destDir -Force | Out-Null }
-            Copy-Item -Path $file.FullName -Destination $destPath -Force
-          }
-
-          $updateZipPath = Join-Path $outputDir "update.zip"
-          if ($changedFiles.Count -gt 0) {
-            Compress-Archive -Path "$tempDir\*" -DestinationPath $updateZipPath -CompressionLevel Optimal
           } else {
-            # No changed files - create a minimal zip
-            $emptyMarker = Join-Path $tempDir ".no-changes"
-            Set-Content -Path $emptyMarker -Value ""
-            Compress-Archive -Path "$tempDir\*" -DestinationPath $updateZipPath -CompressionLevel Optimal
-          }
-          Remove-Item -Path $tempDir -Recurse -Force
+            Write-Host "No previous version available - generating full package..."
+            # Generate a "full" delta package (all files as "add")
+            & $scriptPath `
+              -PreviousVersion "0.0.0" `
+              -CurrentVersion $version `
+              -PreviousDir $currentAppPath `
+              -CurrentDir $currentAppPath `
+              -OutputDir $outputDir
 
-          Write-Host "Created update.zip: $([Math]::Round((Get-Item $updateZipPath).Length / 1MB, 2)) MB"
+            if ($LASTEXITCODE -ne 0) {
+              Write-Error "Generate-DeltaPackage.ps1 failed"
+              exit 1
+            }
+          }
 
           # Clean up previous version extraction
           if ($previousAppPath -and (Test-Path $previousAppPath)) {
             Remove-Item -Path $previousAppPath -Recurse -Force -ErrorAction SilentlyContinue
           }
+
+          # Display results
+          $updateZipPath = Join-Path $outputDir "update.zip"
+          if (Test-Path $updateZipPath) {
+            $sizeMB = [Math]::Round((Get-Item $updateZipPath).Length / 1MB, 2)
+            Write-Host "Created update.zip: $sizeMB MB"
+          }
         shell: pwsh
 
       - name: Sign File Map
@@ -512,6 +482,7 @@ jobs:
             delta-output/files.json
             delta-output/files.json.sig
             delta-output/update.zip
+            delta-output/app-*.zip
           if-no-files-found: error
           retention-days: 90
 
@@ -912,6 +883,8 @@ jobs:
           find artifacts -type f \( -name "*.exe" -o -name "*.deb" -o -name "*.dmg" \) -exec cp -v {} release-files/ \;
           # Copy delta update files (files.json, files.json.sig, update.zip)
           find artifacts -type f \( -name "files.json" -o -name "files.json.sig" -o -name "update.zip" \) -exec cp -v {} release-files/ \;
+          # Copy app package for future delta generation (app-{version}-win-{arch}.zip)
+          find artifacts -type f -name "app-*.zip" -exec cp -v {} release-files/ \;
           echo ""
           echo "Files ready for release:"
           ls -lh release-files/ || echo "No files found in release-files"

LanMountainDesktop.Launcher/Services/LauncherFlowCoordinator.cs

@@ -41,6 +41,18 @@ internal sealed class LauncherFlowCoordinator
             // 清理旧版本，保留至少3个版本
             _deploymentLocator.CleanupOldDeployments(minVersionsToKeep: 3);
 
+            // 检测老版本安装（首次运行时）
+            if (_oobeStateService.IsFirstRun())
+            {
+                var legacyInfo = LegacyVersionDetector.DetectLegacyInstallation();
+                if (legacyInfo != null)
+                {
+                    var migrationResult = await ShowMigrationPromptAsync(legacyInfo);
+                    // 无论用户选择什么，都继续启动流程
+                    Console.WriteLine($"[LauncherFlowCoordinator] Migration prompt result: {migrationResult}");
+                }
+            }
+
             // 使用传入的 Splash 窗口或创建新的
             var splashWindow = existingSplashWindow ?? await Dispatcher.UIThread.InvokeAsync(() =>
             {
@@ -341,6 +353,69 @@ internal sealed class LauncherFlowCoordinator
         return (result, customPath);
     }
 
+    /// <summary>
+    /// 显示迁移提示窗口
+    /// </summary>
+    private async Task<MigrationResult> ShowMigrationPromptAsync(LegacyVersionInfo legacyInfo)
+    {
+        MigrationPromptWindow? migrationWindow = null;
+
+        // 在 UI 线程创建并显示迁移提示窗口
+        await Dispatcher.UIThread.InvokeAsync(() =>
+        {
+            try
+            {
+                migrationWindow = new MigrationPromptWindow();
+                migrationWindow.SetLegacyInfo(legacyInfo);
+                migrationWindow.Show();
+                Console.WriteLine("[LauncherFlowCoordinator] MigrationPromptWindow shown");
+            }
+            catch (Exception ex)
+            {
+                Console.Error.WriteLine($"[LauncherFlowCoordinator] Failed to show MigrationPromptWindow: {ex.Message}");
+            }
+        });
+
+        if (migrationWindow is null)
+        {
+            Console.Error.WriteLine("[LauncherFlowCoordinator] MigrationPromptWindow is null, skipping migration prompt");
+            return MigrationResult.Skipped;
+        }
+
+        // 等待用户选择
+        MigrationResult result;
+
+        try
+        {
+            result = await migrationWindow.WaitForChoiceAsync();
+            Console.WriteLine($"[LauncherFlowCoordinator] MigrationPromptWindow result: {result}");
+        }
+        catch (Exception ex)
+        {
+            Console.Error.WriteLine($"[LauncherFlowCoordinator] Error waiting for migration choice: {ex.Message}");
+            result = MigrationResult.Skipped;
+        }
+
+        // 安全关闭窗口
+        await Dispatcher.UIThread.InvokeAsync(() =>
+        {
+            try
+            {
+                if (migrationWindow.IsVisible && migrationWindow.IsLoaded)
+                {
+                    migrationWindow.Close();
+                    Console.WriteLine("[LauncherFlowCoordinator] MigrationPromptWindow closed successfully");
+                }
+            }
+            catch (Exception ex)
+            {
+                Console.Error.WriteLine($"[LauncherFlowCoordinator] Error closing MigrationPromptWindow: {ex.Message}");
+            }
+        });
+
+        return result;
+    }
+
     private static void EnsureExecutable(string path)
     {
         if (OperatingSystem.IsWindows())

LanMountainDesktop.Launcher/Services/LegacyVersionDetector.cs

@@ -0,0 +1,341 @@
+using System.Diagnostics;
+using Microsoft.Win32;
+
+namespace LanMountainDesktop.Launcher.Services;
+
+/// <summary>
+/// 老版本检测器 - 检测 0.8.x 及更早的单应用模式安装
+/// </summary>
+internal sealed class LegacyVersionDetector
+{
+    private const string LegacyAppName = "LanMountainDesktop";
+    private const string LegacyExeName = "LanMountainDesktop.exe";
+
+    /// <summary>
+    /// 检测是否存在老版本安装
+    /// </summary>
+    public static LegacyVersionInfo? DetectLegacyInstallation()
+    {
+        // 1. 检查注册表（安装版）
+        var registryInfo = DetectFromRegistry();
+        if (registryInfo != null)
+        {
+            return registryInfo;
+        }
+
+        // 2. 检查常见安装目录
+        var commonPaths = DetectFromCommonPaths();
+        if (commonPaths != null)
+        {
+            return commonPaths;
+        }
+
+        // 3. 检查便携版位置
+        var portableInfo = DetectPortableInstallation();
+        if (portableInfo != null)
+        {
+            return portableInfo;
+        }
+
+        return null;
+    }
+
+    /// <summary>
+    /// 从注册表检测安装信息
+    /// </summary>
+    private static LegacyVersionInfo? DetectFromRegistry()
+    {
+        try
+        {
+            // 检查 HKLM\Software\Microsoft\Windows\CurrentVersion\Uninstall
+            using var key = Registry.LocalMachine.OpenSubKey(
+                @$"Software\Microsoft\Windows\CurrentVersion\Uninstall\{LegacyAppName}");
+            
+            if (key != null)
+            {
+                var installLocation = key.GetValue("InstallLocation") as string;
+                var displayVersion = key.GetValue("DisplayVersion") as string;
+                var uninstallString = key.GetValue("UninstallString") as string;
+
+                if (!string.IsNullOrWhiteSpace(installLocation) && 
+                    File.Exists(Path.Combine(installLocation, LegacyExeName)))
+                {
+                    return new LegacyVersionInfo
+                    {
+                        Version = displayVersion ?? "0.8.x",
+                        InstallPath = installLocation,
+                        UninstallCommand = uninstallString,
+                        InstallType = LegacyInstallType.Registry
+                    };
+                }
+            }
+
+            // 检查 HKCU（用户级安装）
+            using var userKey = Registry.CurrentUser.OpenSubKey(
+                @$"Software\Microsoft\Windows\CurrentVersion\Uninstall\{LegacyAppName}");
+            
+            if (userKey != null)
+            {
+                var installLocation = userKey.GetValue("InstallLocation") as string;
+                var displayVersion = userKey.GetValue("DisplayVersion") as string;
+                var uninstallString = userKey.GetValue("UninstallString") as string;
+
+                if (!string.IsNullOrWhiteSpace(installLocation) && 
+                    File.Exists(Path.Combine(installLocation, LegacyExeName)))
+                {
+                    return new LegacyVersionInfo
+                    {
+                        Version = displayVersion ?? "0.8.x",
+                        InstallPath = installLocation,
+                        UninstallCommand = uninstallString,
+                        InstallType = LegacyInstallType.Registry
+                    };
+                }
+            }
+        }
+        catch (Exception ex)
+        {
+            Console.WriteLine($"[LegacyVersionDetector] Registry detection failed: {ex.Message}");
+        }
+
+        return null;
+    }
+
+    /// <summary>
+    /// 从常见安装路径检测
+    /// </summary>
+    private static LegacyVersionInfo? DetectFromCommonPaths()
+    {
+        var commonPaths = new[]
+        {
+            Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.ProgramFiles), LegacyAppName),
+            Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.ProgramFilesX86), LegacyAppName),
+            Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData), LegacyAppName),
+            Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData), LegacyAppName),
+        };
+
+        foreach (var path in commonPaths)
+        {
+            try
+            {
+                if (Directory.Exists(path))
+                {
+                    // 检查是否存在老版本的特征文件（没有 app-* 目录）
+                    var exePath = Path.Combine(path, LegacyExeName);
+                    var hasAppDirs = Directory.GetDirectories(path, "app-*").Length > 0;
+
+                    if (File.Exists(exePath) && !hasAppDirs)
+                    {
+                        // 尝试读取版本信息
+                        var version = TryGetFileVersion(exePath);
+                        
+                        return new LegacyVersionInfo
+                        {
+                            Version = version ?? "0.8.x",
+                            InstallPath = path,
+                            UninstallCommand = FindUninstaller(path),
+                            InstallType = LegacyInstallType.CommonPath
+                        };
+                    }
+                }
+            }
+            catch (Exception ex)
+            {
+                Console.WriteLine($"[LegacyVersionDetector] Path detection failed for {path}: {ex.Message}");
+            }
+        }
+
+        return null;
+    }
+
+    /// <summary>
+    /// 检测便携版安装
+    /// </summary>
+    private static LegacyVersionInfo? DetectPortableInstallation()
+    {
+        try
+        {
+            // 检查启动器所在目录的父目录（便携版常见布局）
+            var launcherDir = AppContext.BaseDirectory;
+            var parentDir = Path.GetFullPath(Path.Combine(launcherDir, ".."));
+
+            if (Directory.Exists(parentDir))
+            {
+                var exePath = Path.Combine(parentDir, LegacyExeName);
+                var hasAppDirs = Directory.GetDirectories(parentDir, "app-*").Length > 0;
+
+                // 如果存在 exe 且没有 app-* 目录，可能是老版本
+                if (File.Exists(exePath) && !hasAppDirs)
+                {
+                    var version = TryGetFileVersion(exePath);
+                    
+                    // 检查是否真的是老版本（通过文件版本或特定标记）
+                    if (IsLegacyVersion(version))
+                    {
+                        return new LegacyVersionInfo
+                        {
+                            Version = version ?? "0.8.x",
+                            InstallPath = parentDir,
+                            UninstallCommand = null, // 便携版没有卸载程序
+                            InstallType = LegacyInstallType.Portable
+                        };
+                    }
+                }
+            }
+        }
+        catch (Exception ex)
+        {
+            Console.WriteLine($"[LegacyVersionDetector] Portable detection failed: {ex.Message}");
+        }
+
+        return null;
+    }
+
+    /// <summary>
+    /// 查找卸载程序
+    /// </summary>
+    private static string? FindUninstaller(string installPath)
+    {
+        try
+        {
+            // 常见的卸载程序命名
+            var uninstallerNames = new[] { "unins000.exe", "uninstall.exe", "Uninstall.exe" };
+            
+            foreach (var name in uninstallerNames)
+            {
+                var path = Path.Combine(installPath, name);
+                if (File.Exists(path))
+                {
+                    return path;
+                }
+            }
+        }
+        catch { }
+
+        return null;
+    }
+
+    /// <summary>
+    /// 获取文件版本
+    /// </summary>
+    private static string? TryGetFileVersion(string filePath)
+    {
+        try
+        {
+            var versionInfo = FileVersionInfo.GetVersionInfo(filePath);
+            return versionInfo.FileVersion;
+        }
+        catch
+        {
+            return null;
+        }
+    }
+
+    /// <summary>
+    /// 判断是否为老版本（版本号 < 1.0.0）
+    /// </summary>
+    private static bool IsLegacyVersion(string? version)
+    {
+        if (string.IsNullOrWhiteSpace(version))
+        {
+            return true; // 无法确定版本时，保守认为是老版本
+        }
+
+        if (Version.TryParse(version.Split(' ')[0], out var v))
+        {
+            return v.Major < 1;
+        }
+
+        return true;
+    }
+
+    /// <summary>
+    /// 打开卸载界面
+    /// </summary>
+    public static void OpenUninstallInterface(LegacyVersionInfo info)
+    {
+        try
+        {
+            if (!string.IsNullOrWhiteSpace(info.UninstallCommand))
+            {
+                // 有卸载命令，直接执行
+                var parts = info.UninstallCommand.Split(new[] { ' ' }, 2);
+                var fileName = parts[0].Trim('"');
+                var arguments = parts.Length > 1 ? parts[1] : "";
+
+                Process.Start(new ProcessStartInfo
+                {
+                    FileName = fileName,
+                    Arguments = arguments,
+                    UseShellExecute = true,
+                    Verb = "runas" // 请求管理员权限
+                });
+            }
+            else
+            {
+                // 没有卸载命令，打开系统卸载面板
+                Process.Start(new ProcessStartInfo
+                {
+                    FileName = "appwiz.cpl",
+                    UseShellExecute = true
+                });
+            }
+        }
+        catch (Exception ex)
+        {
+            Console.Error.WriteLine($"[LegacyVersionDetector] Failed to open uninstall: {ex.Message}");
+            
+            // 兜底：打开系统卸载面板
+            try
+            {
+                Process.Start(new ProcessStartInfo
+                {
+                    FileName = "appwiz.cpl",
+                    UseShellExecute = true
+                });
+            }
+            catch { }
+        }
+    }
+
+    /// <summary>
+    /// 在资源管理器中显示老版本位置
+    /// </summary>
+    public static void ShowInExplorer(string path)
+    {
+        try
+        {
+            Process.Start(new ProcessStartInfo
+            {
+                FileName = "explorer.exe",
+                Arguments = $"/select,\"{path}\"",
+                UseShellExecute = false
+            });
+        }
+        catch (Exception ex)
+        {
+            Console.Error.WriteLine($"[LegacyVersionDetector] Failed to show in explorer: {ex.Message}");
+        }
+    }
+}
+
+/// <summary>
+/// 老版本信息
+/// </summary>
+public class LegacyVersionInfo
+{
+    public string Version { get; set; } = "0.8.x";
+    public string InstallPath { get; set; } = "";
+    public string? UninstallCommand { get; set; }
+    public LegacyInstallType InstallType { get; set; }
+}
+
+/// <summary>
+/// 老版本安装类型
+/// </summary>
+public enum LegacyInstallType
+{
+    Registry,    // 注册表安装版
+    CommonPath,  // 常见路径安装
+    Portable     // 便携版
+}

LanMountainDesktop.Launcher/Views/MigrationPromptWindow.axaml

@@ -0,0 +1,149 @@
+<Window xmlns="https://github.com/avaloniaui"
+        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+        xmlns:views="clr-namespace:LanMountainDesktop.Launcher.Views"
+        mc:Ignorable="d"
+        d:DesignWidth="520"
+        d:DesignHeight="360"
+        x:Class="LanMountainDesktop.Launcher.Views.MigrationPromptWindow"
+        x:DataType="views:MigrationPromptWindow"
+        Title="阑山桌面 - 版本迁移"
+        Width="520"
+        Height="360"
+        CanResize="False"
+        WindowStartupLocation="CenterScreen"
+        Background="{DynamicResource SolidBackgroundFillColorBaseBrush}"
+        TransparencyLevelHint="None"
+        Icon="/Assets/logo.ico">
+  <Design.DataContext>
+    <views:MigrationPromptWindow />
+  </Design.DataContext>
+
+  <Grid RowDefinitions="*,Auto">
+    <!-- 主内容区域 -->
+    <Grid Grid.Row="0" Margin="24,24,24,16" ColumnDefinitions="Auto,*">
+
+      <!-- 左侧：信息图标 -->
+      <Border Grid.Column="0"
+              Width="48"
+              Height="48"
+              Margin="0,4,16,0"
+              Background="{DynamicResource SystemFillColorCautionBackgroundBrush}"
+              CornerRadius="24"
+              VerticalAlignment="Top">
+        <TextBlock Text="&#xE7BA;"
+                   FontSize="24"
+                   FontFamily="{DynamicResource SymbolThemeFontFamily}"
+                   Foreground="{DynamicResource SystemFillColorCautionBrush}"
+                   HorizontalAlignment="Center"
+                   VerticalAlignment="Center"/>
+      </Border>
+
+      <!-- 右侧：内容 -->
+      <StackPanel Grid.Column="1" Spacing="12">
+        <!-- 标题 -->
+        <TextBlock Text="检测到旧版本"
+                   FontSize="18"
+                   FontWeight="SemiBold"
+                   Foreground="{DynamicResource TextFillColorPrimaryBrush}"
+                   TextWrapping="Wrap"/>
+
+        <!-- 说明文字 -->
+        <TextBlock x:Name="DescriptionText"
+                   Text="检测到您的系统中安装了旧版本的阑山桌面（0.8.4）。新版本采用了全新的架构，建议卸载旧版本以获得更好的体验。"
+                   FontSize="14"
+                   Foreground="{DynamicResource TextFillColorSecondaryBrush}"
+                   TextWrapping="Wrap"
+                   LineHeight="20"/>
+
+        <!-- 老版本信息卡片 -->
+        <Border Margin="0,8,0,0"
+                Background="{DynamicResource CardBackgroundFillColorDefaultBrush}"
+                CornerRadius="8"
+                Padding="16,12">
+          <Grid RowDefinitions="Auto,Auto,Auto" ColumnDefinitions="Auto,*">
+            <!-- 版本号 -->
+            <TextBlock Grid.Row="0" Grid.Column="0"
+                       Text="版本："
+                       FontSize="12"
+                       Foreground="{DynamicResource TextFillColorTertiaryBrush}"/>
+            <TextBlock x:Name="VersionText"
+                       Grid.Row="0" Grid.Column="1"
+                       Text="0.8.4"
+                       FontSize="12"
+                       Foreground="{DynamicResource TextFillColorSecondaryBrush}"
+                       Margin="8,0,0,0"/>
+
+            <!-- 安装路径 -->
+            <TextBlock Grid.Row="1" Grid.Column="0"
+                       Text="位置："
+                       FontSize="12"
+                       Foreground="{DynamicResource TextFillColorTertiaryBrush}"
+                       Margin="0,4,0,0"/>
+            <TextBlock x:Name="PathText"
+                       Grid.Row="1" Grid.Column="1"
+                       Text="C:\Program Files\LanMountainDesktop"
+                       FontSize="12"
+                       Foreground="{DynamicResource TextFillColorSecondaryBrush}"
+                       TextTrimming="CharacterEllipsis"
+                       Margin="8,4,0,0"/>
+
+            <!-- 安装类型 -->
+            <TextBlock Grid.Row="2" Grid.Column="0"
+                       Text="类型："
+                       FontSize="12"
+                       Foreground="{DynamicResource TextFillColorTertiaryBrush}"
+                       Margin="0,4,0,0"/>
+            <TextBlock x:Name="TypeText"
+                       Grid.Row="2" Grid.Column="1"
+                       Text="安装版"
+                       FontSize="12"
+                       Foreground="{DynamicResource TextFillColorSecondaryBrush}"
+                       Margin="8,4,0,0"/>
+          </Grid>
+        </Border>
+
+        <!-- 提示信息 -->
+        <TextBlock Text="卸载旧版本不会影响新版本的使用，您的个人数据将保留。"
+                   FontSize="12"
+                   Foreground="{DynamicResource TextFillColorTertiaryBrush}"
+                   TextWrapping="Wrap"
+                   Margin="0,4,0,0"/>
+      </StackPanel>
+    </Grid>
+
+    <!-- 底部：按钮区域 -->
+    <Border Grid.Row="1"
+            Background="{DynamicResource CardBackgroundFillColorDefaultBrush}"
+            Padding="24,16">
+      <Grid ColumnDefinitions="*,Auto">
+        <!-- 左侧：查看位置按钮 -->
+        <Button x:Name="ShowLocationButton"
+                Grid.Column="0"
+                Content="查看位置"
+                Width="100"
+                Height="32"
+                FontSize="13"
+                HorizontalAlignment="Left"/>
+
+        <!-- 右侧：操作按钮 -->
+        <StackPanel Grid.Column="1"
+                    Orientation="Horizontal"
+                    Spacing="8">
+          <Button x:Name="SkipButton"
+                  Content="暂不处理"
+                  Width="100"
+                  Height="32"
+                  FontSize="13"/>
+          <Button x:Name="UninstallButton"
+                  Content="卸载旧版本"
+                  Width="100"
+                  Height="32"
+                  FontSize="13"
+                  Theme="{DynamicResource AccentButtonTheme}"/>
+        </StackPanel>
+      </Grid>
+    </Border>
+  </Grid>
+</Window>

LanMountainDesktop.Launcher/Views/MigrationPromptWindow.axaml.cs

@@ -0,0 +1,157 @@
+using Avalonia.Controls;
+using Avalonia.Interactivity;
+using Avalonia.Markup.Xaml;
+using LanMountainDesktop.Launcher.Services;
+
+namespace LanMountainDesktop.Launcher.Views;
+
+/// <summary>
+/// 迁移提示窗口 - 提示用户卸载旧版本
+/// </summary>
+public partial class MigrationPromptWindow : Window
+{
+    private readonly TaskCompletionSource<MigrationResult> _completionSource = new();
+    private LegacyVersionInfo? _legacyInfo;
+
+    public MigrationPromptWindow()
+    {
+        AvaloniaXamlLoader.Load(this);
+        InitializeEventHandlers();
+    }
+
+    /// <summary>
+    /// 设置老版本信息
+    /// </summary>
+    public void SetLegacyInfo(LegacyVersionInfo info)
+    {
+        _legacyInfo = info;
+
+        // 更新 UI
+        var versionText = this.FindControl<TextBlock>("VersionText");
+        var pathText = this.FindControl<TextBlock>("PathText");
+        var typeText = this.FindControl<TextBlock>("TypeText");
+        var descriptionText = this.FindControl<TextBlock>("DescriptionText");
+
+        if (versionText != null)
+        {
+            versionText.Text = info.Version;
+        }
+
+        if (pathText != null)
+        {
+            pathText.Text = info.InstallPath;
+        }
+
+        if (typeText != null)
+        {
+            typeText.Text = info.InstallType switch
+            {
+                LegacyInstallType.Registry => "安装版",
+                LegacyInstallType.Portable => "便携版",
+                _ => "未知"
+            };
+        }
+
+        if (descriptionText != null)
+        {
+            descriptionText.Text = $"检测到您的系统中安装了旧版本的阑山桌面（{info.Version}）。新版本采用了全新的架构，建议卸载旧版本以获得更好的体验。";
+        }
+    }
+
+    /// <summary>
+    /// 初始化事件处理程序
+    /// </summary>
+    private void InitializeEventHandlers()
+    {
+        var showLocationButton = this.FindControl<Button>("ShowLocationButton");
+        var skipButton = this.FindControl<Button>("SkipButton");
+        var uninstallButton = this.FindControl<Button>("UninstallButton");
+
+        if (showLocationButton != null)
+        {
+            showLocationButton.Click += OnShowLocationClick;
+        }
+
+        if (skipButton != null)
+        {
+            skipButton.Click += OnSkipClick;
+        }
+
+        if (uninstallButton != null)
+        {
+            uninstallButton.Click += OnUninstallClick;
+        }
+    }
+
+    /// <summary>
+    /// 查看位置按钮点击
+    /// </summary>
+    private void OnShowLocationClick(object? sender, RoutedEventArgs e)
+    {
+        if (_legacyInfo != null)
+        {
+            LegacyVersionDetector.ShowInExplorer(_legacyInfo.InstallPath);
+        }
+    }
+
+    /// <summary>
+    /// 跳过按钮点击
+    /// </summary>
+    private void OnSkipClick(object? sender, RoutedEventArgs e)
+    {
+        _completionSource.TrySetResult(MigrationResult.Skipped);
+        Close();
+    }
+
+    /// <summary>
+    /// 卸载按钮点击
+    /// </summary>
+    private void OnUninstallClick(object? sender, RoutedEventArgs e)
+    {
+        if (_legacyInfo != null)
+        {
+            LegacyVersionDetector.OpenUninstallInterface(_legacyInfo);
+        }
+
+        _completionSource.TrySetResult(MigrationResult.UninstallOpened);
+        Close();
+    }
+
+    /// <summary>
+    /// 等待用户选择
+    /// </summary>
+    public Task<MigrationResult> WaitForChoiceAsync()
+    {
+        return _completionSource.Task;
+    }
+
+    /// <summary>
+    /// 窗口关闭事件
+    /// </summary>
+    protected override void OnClosing(WindowClosingEventArgs e)
+    {
+        // 如果还没有完成，标记为跳过
+        if (!_completionSource.Task.IsCompleted)
+        {
+            _completionSource.TrySetResult(MigrationResult.Skipped);
+        }
+
+        base.OnClosing(e);
+    }
+}
+
+/// <summary>
+/// 迁移结果
+/// </summary>
+public enum MigrationResult
+{
+    /// <summary>
+    /// 用户选择跳过
+    /// </summary>
+    Skipped,
+
+    /// <summary>
+    /// 已打开卸载界面
+    /// </summary>
+    UninstallOpened
+}

LanMountainDesktop/Services/UpdateWorkflowService.cs

@@ -82,6 +82,7 @@ public sealed class UpdateWorkflowService
 
     /// <summary>
     /// Checks whether a GitHub Release contains delta update assets (files.json, files.json.sig, update.zip).
+    /// Also supports versioned filenames like files-{version}.json, delta-{old}-to-{new}.zip
     /// </summary>
     public static bool IsDeltaUpdateAvailable(GitHubReleaseInfo release)
     {
@@ -91,9 +92,67 @@ public sealed class UpdateWorkflowService
         }
 
         var assetNames = release.Assets.Select(a => a.Name).ToHashSet(StringComparer.OrdinalIgnoreCase);
-        return assetNames.Contains(DeltaManifestFileName)
-            && assetNames.Contains(DeltaSignatureFileName)
-            && assetNames.Contains(DeltaArchiveFileName);
+        
+        // Check for exact matches first (preferred)
+        var hasExactManifest = assetNames.Contains(DeltaManifestFileName);
+        var hasExactSignature = assetNames.Contains(DeltaSignatureFileName);
+        var hasExactArchive = assetNames.Contains(DeltaArchiveFileName);
+        
+        if (hasExactManifest && hasExactSignature && hasExactArchive)
+        {
+            return true;
+        }
+        
+        // Check for versioned filenames (e.g., files-1.0.0.json, delta-0.9.9-to-1.0.0.zip)
+        var hasVersionedManifest = assetNames.Any(n => n.StartsWith("files-", StringComparison.OrdinalIgnoreCase) 
+            && n.EndsWith(".json", StringComparison.OrdinalIgnoreCase));
+        var hasVersionedSignature = assetNames.Any(n => n.StartsWith("files-", StringComparison.OrdinalIgnoreCase) 
+            && n.EndsWith(".sig", StringComparison.OrdinalIgnoreCase));
+        var hasVersionedArchive = assetNames.Any(n => n.StartsWith("delta-", StringComparison.OrdinalIgnoreCase) 
+            && n.EndsWith(".zip", StringComparison.OrdinalIgnoreCase));
+        
+        return hasVersionedManifest && hasVersionedSignature && hasVersionedArchive;
+    }
+    
+    /// <summary>
+    /// Finds the best matching delta asset name from the release assets.
+    /// Prefers exact matches, falls back to versioned filenames.
+    /// </summary>
+    private static string? FindDeltaAssetName(GitHubReleaseInfo release, string baseName)
+    {
+        if (release?.Assets is null)
+        {
+            return null;
+        }
+        
+        // Try exact match first
+        var exactMatch = release.Assets.FirstOrDefault(a => 
+            string.Equals(a.Name, baseName, StringComparison.OrdinalIgnoreCase));
+        if (exactMatch != null)
+        {
+            return exactMatch.Name;
+        }
+        
+        // Fall back to pattern matching
+        return baseName.ToLowerInvariant() switch
+        {
+            "files.json" => release.Assets
+                .Where(a => a.Name.StartsWith("files-", StringComparison.OrdinalIgnoreCase) 
+                    && a.Name.EndsWith(".json", StringComparison.OrdinalIgnoreCase))
+                .OrderByDescending(a => a.Name.Length)
+                .FirstOrDefault()?.Name,
+            "files.json.sig" => release.Assets
+                .Where(a => a.Name.StartsWith("files-", StringComparison.OrdinalIgnoreCase) 
+                    && a.Name.EndsWith(".sig", StringComparison.OrdinalIgnoreCase))
+                .OrderByDescending(a => a.Name.Length)
+                .FirstOrDefault()?.Name,
+            "update.zip" => release.Assets
+                .Where(a => a.Name.StartsWith("delta-", StringComparison.OrdinalIgnoreCase) 
+                    && a.Name.EndsWith(".zip", StringComparison.OrdinalIgnoreCase))
+                .OrderByDescending(a => a.Name.Length)
+                .FirstOrDefault()?.Name,
+            _ => null
+        };
     }
 
     /// <summary>
@@ -132,6 +191,24 @@ public sealed class UpdateWorkflowService
         var downloadSource = state.UpdateDownloadSource;
         var downloadThreads = state.UpdateDownloadThreads;
 
+        // Find the actual asset names (support both exact and versioned filenames)
+        var manifestAssetName = FindDeltaAssetName(checkResult.Release, DeltaManifestFileName);
+        var signatureAssetName = FindDeltaAssetName(checkResult.Release, DeltaSignatureFileName);
+        var archiveAssetName = FindDeltaAssetName(checkResult.Release, DeltaArchiveFileName);
+        
+        if (manifestAssetName is null || signatureAssetName is null || archiveAssetName is null)
+        {
+            return new UpdateDownloadResult(false, null, "One or more delta assets not found in release.");
+        }
+        
+        // Build asset map with actual names from release
+        var assetMap = new Dictionary<string, string>(StringComparer.OrdinalIgnoreCase)
+        {
+            [DeltaManifestFileName] = manifestAssetName,
+            [DeltaSignatureFileName] = signatureAssetName,
+            [DeltaArchiveFileName] = archiveAssetName
+        };
+        
         var requiredAssets = new Dictionary<string, GitHubReleaseAsset>(StringComparer.OrdinalIgnoreCase)
         {
             [DeltaManifestFileName] = null!,
@@ -141,9 +218,14 @@ public sealed class UpdateWorkflowService
 
         foreach (var asset in checkResult.Release.Assets)
         {
-            if (requiredAssets.ContainsKey(asset.Name))
+            // Match by actual asset name
+            foreach (var (key, actualName) in assetMap)
             {
-                requiredAssets[asset.Name] = asset;
+                if (string.Equals(asset.Name, actualName, StringComparison.OrdinalIgnoreCase))
+                {
+                    requiredAssets[key] = asset;
+                    break;
+                }
             }
         }
 

scripts/Generate-DeltaPackage.ps1

@@ -60,10 +60,20 @@ function Get-FileManifest {
 }
 
 Write-Host "扫描上一版本文件..." -ForegroundColor Yellow
+Write-Host "  目录: $PreviousDir" -ForegroundColor Gray
+if (-not (Test-Path $PreviousDir)) {
+    throw "Previous directory does not exist: $PreviousDir"
+}
 $previousManifest = Get-FileManifest -RootDir $PreviousDir
+Write-Host "  找到 $($previousManifest.Count) 个文件" -ForegroundColor Gray
 
 Write-Host "扫描当前版本文件..." -ForegroundColor Yellow
+Write-Host "  目录: $CurrentDir" -ForegroundColor Gray
+if (-not (Test-Path $CurrentDir)) {
+    throw "Current directory does not exist: $CurrentDir"
+}
 $currentManifest = Get-FileManifest -RootDir $CurrentDir
+Write-Host "  找到 $($currentManifest.Count) 个文件" -ForegroundColor Gray
 
 # 分析文件变更
 $changedFiles = @()
@@ -125,6 +135,18 @@ Write-Host "  复用: $($reusedFiles.Count) 个文件"
 Write-Host "  删除: $($deletedFiles.Count) 个文件"
 Write-Host ""
 
+# 显示前10个变更的文件（用于调试）
+if ($changedFiles.Count -gt 0) {
+    Write-Host "变更的文件示例:" -ForegroundColor Cyan
+    $changedFiles | Select-Object -First 10 | ForEach-Object {
+        Write-Host "  [$($_.Action)] $($_.Path)" -ForegroundColor Gray
+    }
+    if ($changedFiles.Count -gt 10) {
+        Write-Host "  ... 还有 $($changedFiles.Count - 10) 个文件" -ForegroundColor Gray
+    }
+    Write-Host ""
+}
+
 # 创建临时目录用于打包
 $tempDir = Join-Path $OutputDir "temp_delta"
 if (Test-Path $tempDir) {
@@ -146,20 +168,28 @@ foreach ($file in $changedFiles) {
     Copy-Item -Path $sourcePath -Destination $destPath -Force
 }
 
-# 创建 delta.zip
-$deltaZipPath = Join-Path $OutputDir "delta-$PreviousVersion-to-$CurrentVersion.zip"
-Write-Host "创建增量包: $deltaZipPath" -ForegroundColor Yellow
+# 创建 update.zip (Launcher 期望的文件名)
+$updateZipPath = Join-Path $OutputDir "update.zip"
+Write-Host "创建增量包: $updateZipPath" -ForegroundColor Yellow
 
+if (Test-Path $updateZipPath) {
+    Remove-Item -Path $updateZipPath -Force
+}
+
+Compress-Archive -Path "$tempDir\*" -DestinationPath $updateZipPath -CompressionLevel Optimal
+
+# 同时创建带版本号的副本（用于发布到 GitHub Release）
+$deltaZipPath = Join-Path $OutputDir "delta-$PreviousVersion-to-$CurrentVersion.zip"
+Write-Host "创建带版本号的副本: $deltaZipPath" -ForegroundColor Yellow
 if (Test-Path $deltaZipPath) {
     Remove-Item -Path $deltaZipPath -Force
 }
-
-Compress-Archive -Path "$tempDir\*" -DestinationPath $deltaZipPath -CompressionLevel Optimal
+Copy-Item -Path $updateZipPath -Destination $deltaZipPath -Force
 
 # 清理临时目录
 Remove-Item -Path $tempDir -Recurse -Force
 
-# 生成 files.json
+# 生成 files.json (Launcher 期望的文件名)
 $filesJson = @{
     FromVersion = $PreviousVersion
     ToVersion = $CurrentVersion
@@ -167,18 +197,26 @@ $filesJson = @{
     Files = @($changedFiles + $reusedFiles + $deletedFiles)
 }
 
-$filesJsonPath = Join-Path $OutputDir "files-$CurrentVersion.json"
+$filesJsonPath = Join-Path $OutputDir "files.json"
 Write-Host "生成文件清单: $filesJsonPath" -ForegroundColor Yellow
 
 $filesJson | ConvertTo-Json -Depth 10 | Set-Content -Path $filesJsonPath -Encoding UTF8
 
+# 同时创建带版本号的副本（用于发布到 GitHub Release）
+$versionedFilesJsonPath = Join-Path $OutputDir "files-$CurrentVersion.json"
+Write-Host "创建带版本号的副本: $versionedFilesJsonPath" -ForegroundColor Yellow
+Copy-Item -Path $filesJsonPath -Destination $versionedFilesJsonPath -Force
+
 # 计算增量包大小
-$deltaSize = (Get-Item $deltaZipPath).Length
-$deltaSizeMB = [math]::Round($deltaSize / 1MB, 2)
+$updateSize = (Get-Item $updateZipPath).Length
+$updateSizeMB = [math]::Round($updateSize / 1MB, 2)
 
 Write-Host ""
 Write-Host "=== 完成 ===" -ForegroundColor Green
-Write-Host "增量包大小: $deltaSizeMB MB"
-Write-Host "输出文件:"
-Write-Host "  - $deltaZipPath"
+Write-Host "增量包大小: $updateSizeMB MB"
+Write-Host "输出文件 (Launcher 使用):"
+Write-Host "  - $updateZipPath"
 Write-Host "  - $filesJsonPath"
+Write-Host "输出文件 (GitHub Release 发布):"
+Write-Host "  - $deltaZipPath"
+Write-Host "  - $versionedFilesJsonPath"