fix.在线安装器

LanDesktopPLONDS.installer/App.axaml.cs

@@ -22,10 +22,12 @@ public partial class App : Application
             var privacyIdentity = new PrivacyDeviceIdentityProvider();
             var installService = OnlineInstallService.CreateDefault(privacyIdentity);
             var consentStore = new InstallerPrivacyConsentStore();
-            desktop.MainWindow = new MainWindow
+            var mainWindow = new MainWindow
             {
                 DataContext = new MainWindowViewModel(installService, privacyIdentity, consentStore)
             };
+            desktop.MainWindow = mainWindow;
+            mainWindow.Show();
         }
 
         base.OnFrameworkInitializationCompleted();

LanDesktopPLONDS.installer/LanDesktopPLONDS.installer.csproj

@@ -10,7 +10,8 @@
     <PackageVersion>$(Version)</PackageVersion>
     <AvaloniaUseCompiledBindingsByDefault>true</AvaloniaUseCompiledBindingsByDefault>
     <ApplicationIcon>Assets\logo.ico</ApplicationIcon>
-    <ApplicationManifest>app.manifest</ApplicationManifest>
+    <ApplicationManifest Condition="'$(Configuration)' == 'Debug'">app.Debug.manifest</ApplicationManifest>
+    <ApplicationManifest Condition="'$(Configuration)' != 'Debug'">app.manifest</ApplicationManifest>
   </PropertyGroup>
 
   <ItemGroup>

LanDesktopPLONDS.installer/Services/InstallerJsonContext.cs

@@ -2,5 +2,10 @@ using System.Text.Json.Serialization;
 
 namespace LanDesktopPLONDS.Installer.Services;
 
+[JsonSourceGenerationOptions(
+    PropertyNamingPolicy = JsonKnownNamingPolicy.CamelCase,
+    PropertyNameCaseInsensitive = true,
+    ReadCommentHandling = System.Text.Json.JsonCommentHandling.Skip,
+    AllowTrailingCommas = true)]
 [JsonSerializable(typeof(InstallerPlondsManifest))]
 internal sealed partial class InstallerJsonContext : JsonSerializerContext;

LanDesktopPLONDS.installer/Services/InstallerPlondsClient.cs

@@ -10,7 +10,7 @@ internal sealed class InstallerPlondsClient(HttpClient httpClient, string stagin
 {
     private const string S3ManifestUrlEnvironmentVariable = "LANMOUNTAIN_PLONDS_S3_MANIFEST_URL";
     private const string GitHubManifestUrlEnvironmentVariable = "LANMOUNTAIN_PLONDS_GITHUB_MANIFEST_URL";
-    private const string DefaultS3ManifestUrl = "https://cn-nb1.rains3.com/lmdesktop/plonds/PLONDS.json";
+    private const string DefaultS3ManifestUrl = "https://cn-nb1.rains3.com/lmdesktop/lanmountain/update/plonds/PLONDS.json";
     private const string DefaultGitHubManifestUrl = "https://github.com/wwiinnddyy/LanMountainDesktop/releases/latest/download/PLONDS.json";
 
     private static readonly JsonSerializerOptions JsonOptions = new()
@@ -78,6 +78,15 @@ internal sealed class InstallerPlondsClient(HttpClient httpClient, string stagin
     {
         var version = ParseVersion(candidate.Manifest.CurrentVersion).ToString();
         var packageRoot = Path.Combine(stagingRoot, SanitizePathSegment(version), SanitizePathSegment(candidate.Source.Id), "full");
+        var urls = new[] { candidate.FilesZipUrl }
+            .Concat(InstallerPlondsUrlResolver.ResolveFilesZipUrls(candidate.Manifest, candidate.Source))
+            .DistinctBy(uri => uri.AbsoluteUri, StringComparer.OrdinalIgnoreCase)
+            .ToArray();
+        Exception? lastError = null;
+
+        foreach (var filesZipUrl in urls)
+        {
+            cancellationToken.ThrowIfCancellationRequested();
             if (Directory.Exists(packageRoot))
             {
                 Directory.Delete(packageRoot, recursive: true);
@@ -87,9 +96,12 @@ internal sealed class InstallerPlondsClient(HttpClient httpClient, string stagin
             var zipPath = Path.Combine(packageRoot, "Files.zip");
             var extractDirectory = Path.Combine(packageRoot, "Files");
             Directory.CreateDirectory(extractDirectory);
+            var attempt = candidate with { FilesZipUrl = filesZipUrl };
 
-        await DownloadToFileAsync(candidate, zipPath, progress, cancellationToken).ConfigureAwait(false);
+            try
-        await VerifyPackageAsync(zipPath, candidate.Manifest, candidate.FilesZipUrl, cancellationToken).ConfigureAwait(false);
+            {
+                await DownloadToFileAsync(attempt, zipPath, progress, cancellationToken).ConfigureAwait(false);
+                await VerifyPackageAsync(zipPath, attempt.Manifest, filesZipUrl, cancellationToken).ConfigureAwait(false);
                 ExtractZip(zipPath, extractDirectory);
 
                 progress?.Report(new InstallerDeployProgress(
@@ -103,6 +115,18 @@ internal sealed class InstallerPlondsClient(HttpClient httpClient, string stagin
 
                 return new PreparedFilesPackage(version, candidate.Source.Id, zipPath, extractDirectory, candidate.Manifest);
             }
+            catch (OperationCanceledException)
+            {
+                throw;
+            }
+            catch (Exception ex)
+            {
+                lastError = ex;
+            }
+        }
+
+        throw new InvalidOperationException("Failed to download and prepare the PLONDS Files package.", lastError);
+    }
 
     public static long EstimateInstallBytes(InstallerPlondsManifest manifest)
     {
@@ -140,6 +164,8 @@ internal sealed class InstallerPlondsClient(HttpClient httpClient, string stagin
         var totalBytes = response.Content.Headers.ContentLength;
         var partialPath = $"{destinationPath}.partial";
         long downloaded = 0;
+        try
+        {
             await using (var source = await response.Content.ReadAsStreamAsync(cancellationToken).ConfigureAwait(false))
             await using (var target = File.Create(partialPath))
             {
@@ -168,6 +194,14 @@ internal sealed class InstallerPlondsClient(HttpClient httpClient, string stagin
 
             File.Move(partialPath, destinationPath, overwrite: true);
         }
+        finally
+        {
+            if (File.Exists(partialPath))
+            {
+                File.Delete(partialPath);
+            }
+        }
+    }
 
     private static async Task VerifyPackageAsync(
         string zipPath,

LanDesktopPLONDS.installer/app.Debug.manifest

@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="utf-8"?>
+<assembly manifestVersion="1.0" xmlns="urn:schemas-microsoft-com:asm.v1">
+  <assemblyIdentity version="0.0.0.0" name="LanDesktopPLONDS.Installer"/>
+
+  <trustInfo xmlns="urn:schemas-microsoft-com:asm.v2">
+    <security>
+      <requestedPrivileges xmlns="urn:schemas-microsoft-com:asm.v3">
+        <requestedExecutionLevel level="asInvoker" uiAccess="false" />
+      </requestedPrivileges>
+    </security>
+  </trustInfo>
+
+  <compatibility xmlns="urn:schemas-microsoft-com:compatibility.v1">
+    <application>
+      <supportedOS Id="{8e0f7a12-bfb3-4fe8-b9a5-48fd50a15a9a}" />
+    </application>
+  </compatibility>
+</assembly>

LanMountainDesktop.Tests/OnlineInstallerCoreTests.cs

@@ -84,6 +84,45 @@ public sealed class OnlineInstallerCoreTests : IDisposable
         Assert.Contains(urls, uri => uri.AbsoluteUri == "https://github.test/Files.zip");
     }
 
+    [Fact]
+    public async Task FindLatest_ParsesCamelCasePlondsManifest()
+    {
+        var client = new InstallerPlondsClient(
+            new HttpClient(new ManifestHandler("""
+                {
+                  "formatVersion": "2.0",
+                  "currentVersion": "1.2.4",
+                  "previousVersion": "1.2.3",
+                  "isFullUpdate": false,
+                  "requiresCleanInstall": true,
+                  "channel": "preview",
+                  "platform": "windows-x64",
+                  "updatedAt": "2026-06-03T00:00:00Z",
+                  "filesMap": {},
+                  "changedFilesMap": {},
+                  "checksums": {
+                    "Files.zip": "md5:00000000000000000000000000000000"
+                  },
+                  "downloads": {
+                    "s3": {
+                      "filesZipUrl": "https://s3.test/Files.zip"
+                    },
+                    "github": {
+                      "filesZipUrl": "https://github.test/files-windows-x64.zip"
+                    }
+                  }
+                }
+                """)),
+            Path.Combine(_tempRoot, "staging"));
+
+        var candidate = await client.FindLatestAsync(CancellationToken.None);
+
+        Assert.Equal("1.2.4", candidate.Manifest.CurrentVersion);
+        Assert.Equal("preview", candidate.Manifest.Channel);
+        Assert.Equal("https://s3.test/Files.zip", candidate.FilesZipUrl.AbsoluteUri);
+    }
+
+
     [Theory]
     [InlineData("")]
     [InlineData("C:\\")]
@@ -141,7 +180,43 @@ public sealed class OnlineInstallerCoreTests : IDisposable
             manifest,
             new Uri("https://s3.test/Files.zip"));
 
-        await Assert.ThrowsAsync<InvalidDataException>(() => client.DownloadAndPrepareFullPackageAsync(candidate, null, CancellationToken.None));
+        var exception = await Assert.ThrowsAsync<InvalidOperationException>(
+            () => client.DownloadAndPrepareFullPackageAsync(candidate, null, CancellationToken.None));
+        Assert.IsType<InvalidDataException>(exception.InnerException);
+    }
+
+    [Fact]
+    public async Task DownloadAndPrepareFullPackage_FallsBackWhenFirstPackageUrlFails()
+    {
+        var zipPath = Path.Combine(_tempRoot, "Files.zip");
+        Directory.CreateDirectory(_tempRoot);
+        using (var archive = ZipFile.Open(zipPath, ZipArchiveMode.Create))
+        {
+            var entry = archive.CreateEntry("LanMountainDesktop.exe");
+            await using var stream = entry.Open();
+            await using var writer = new StreamWriter(stream);
+            await writer.WriteAsync("host");
+        }
+
+        var manifest = CreateManifest(
+            downloads: new InstallerPlondsDownloads(
+                new InstallerPlondsGitHubDownloads(null, null, null, "https://github.test/files-windows-x64.zip"),
+                new InstallerPlondsS3Downloads(null, null, null, null, null, null, null, null, null, "https://s3.test/Files.zip", null, null)),
+            checksums: new Dictionary<string, string>
+            {
+                ["Files.zip"] = "sha256:" + Sha256(zipPath)
+            });
+        var client = new InstallerPlondsClient(
+            new HttpClient(new FallbackPackageHandler(zipPath)),
+            Path.Combine(_tempRoot, "staging"));
+        var candidate = new InstallerPlondsCandidate(
+            new InstallerPlondsSource("s3", "s3", "https://origin.test/releases/PLONDS.json", 100),
+            manifest,
+            new Uri("https://s3.test/Files.zip"));
+
+        var package = await client.DownloadAndPrepareFullPackageAsync(candidate, null, CancellationToken.None);
+
+        Assert.True(File.Exists(Path.Combine(package.ExtractDirectory, "LanMountainDesktop.exe")));
     }
 
     private static InstallerPlondsManifest CreateManifest(
@@ -205,4 +280,33 @@ public sealed class OnlineInstallerCoreTests : IDisposable
             return Task.FromResult(response);
         }
     }
+
+    private sealed class FallbackPackageHandler(string zipPath) : HttpMessageHandler
+    {
+        protected override Task<HttpResponseMessage> SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)
+        {
+            if (request.RequestUri?.AbsoluteUri == "https://github.test/files-windows-x64.zip")
+            {
+                var response = new HttpResponseMessage(System.Net.HttpStatusCode.OK)
+                {
+                    Content = new ByteArrayContent(File.ReadAllBytes(zipPath))
+                };
+                response.Content.Headers.ContentLength = new FileInfo(zipPath).Length;
+                return Task.FromResult(response);
+            }
+
+            return Task.FromResult(new HttpResponseMessage(System.Net.HttpStatusCode.NotFound));
+        }
+    }
+
+    private sealed class ManifestHandler(string manifestJson) : HttpMessageHandler
+    {
+        protected override Task<HttpResponseMessage> SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)
+        {
+            return Task.FromResult(new HttpResponseMessage(System.Net.HttpStatusCode.OK)
+            {
+                Content = new StringContent(manifestJson)
+            });
+        }
+    }
 }

LanMountainDesktop/Services/Plonds/PlondsClientServiceFactory.cs

@@ -4,7 +4,7 @@ internal static class PlondsClientServiceFactory
 {
     private const string S3ManifestUrlEnvironmentVariable = "LANMOUNTAIN_PLONDS_S3_MANIFEST_URL";
     private const string GitHubManifestUrlEnvironmentVariable = "LANMOUNTAIN_PLONDS_GITHUB_MANIFEST_URL";
-    private const string DefaultS3ManifestUrl = "https://cn-nb1.rains3.com/lmdesktop/plonds/PLONDS.json";
+    private const string DefaultS3ManifestUrl = "https://cn-nb1.rains3.com/lmdesktop/lanmountain/update/plonds/PLONDS.json";
     private const string DefaultGitHubManifestUrl = "https://github.com/wwiinnddyy/LanMountainDesktop/releases/latest/download/PLONDS.json";
 
     public static IPlondsService CreateDefault(HttpClient? httpClient = null)