Launcher (#4)

* 激进的更新

* 试试

* fix.可爱的我一直在修CI（

* fix.启动器一定要能够启动

* feat.尝试弄了AOT的启动器。

* fix.修CI，好像是因为Linux那边有个问题，反正修就对了。

* fix.ci难修，为什么liunx跑不起来呢？

* Update build.yml

* Update LanMountainDesktop.csproj

* changed.调整了启动逻辑，优化了更新页面。

* changed.优化了更新体验

* feat.依旧试增量更新这一块，看看velopack

* fix.我们试验性地修复了启动器无法正常启动的问题，原因可能是这个画面没有启动，就GUI没显示。然后还把编译问题修了一下。

* fix.继续修ci，ci怎么天天炸

* changed.velopack，试试rust

* fix.修ci，修融合桌面，修启动器

* fix.GitHub Action工作流怎么天天出问题

* feat.引入velopack，不好，是rust（至少内存很安全了。

* chore: migrate release pipeline to signed filemap and wire rainyun s3

* fix: make optional s3 upload step workflow-parse safe

* fix: make delta pack generation robust for empty diffs and linux paths

* chore: rotate launcher update public key for pdc signing

* fix: restore stable launcher update public key

* fix: sync launcher public key with update signing secret

* fix: normalize PEM line endings in signing key validation

* fix: rotate launcher public key to match ci signing secret

* fix: compare signing keys by SPKI instead of PEM text

* refactor update backend to host-managed PDC pipeline

* fix release workflow env key collisions

* relax publish-pdc precheck to require S3 only

* set GH_TOKEN for PDCC installer step

* ci: add local pdc mock fallback for release publish

* ci: fix pdc mock process log redirection

* ci: fallback pdcc signing key to update private key

* ci: ensure pdcc signing passphrase env is always set

* ci: create pdcc publish root before invoking client

* ci: set pdcc version variable from release version

* ci: decouple pdcc installer version from publish config version

* ci: package pdcc subchannels with generated filemap and changelog

* ci: make local pdc mock diff return empty for fast fallback

* ci: fix pdcc variable mapping and pdc signing prechecks

* Update App.axaml.cs

* ci: wire aws cli credentials for rainyun s3

* ci: pin pdcc client version separately from app version

* ci: harden local pdc mock transport handling

* ci: publish pdcc subchannels in one pass

* ci: add pdcc publish heartbeat and timeout

* ci: fix pdcc publish workdir bootstrap

* feat.Penguin Logistics Online Network Distribution System

* ci: fix plonds s3 probe and signing fallback

* ci: validate signing key and quiet missing baselines

* ci: relax aws checksum mode for rainyun s3

* ci: avoid multipart uploads to rainyun s3

* ci: handle empty plonds baselines safely

* ci.plonds

* Rebuild release pipeline around PLONDS and DDSS

* Fix Windows installer script path in release workflow

LanMountainDesktop.Launcher/Program.cs

@@ -0,0 +1,48 @@
+using Avalonia;
+using LanMountainDesktop.Launcher.Models;
+using LanMountainDesktop.Launcher.Services;
+
+namespace LanMountainDesktop.Launcher;
+
+internal static class Program
+{
+    [STAThread]
+    private static async Task<int> Main(string[] args)
+    {
+        var commandContext = CommandContext.FromArgs(args);
+
+        // 处理遗留插件安装命令
+        if (commandContext.IsLegacyPluginInstall)
+        {
+            var installer = new PluginInstallerService();
+            return await Commands.RunLegacyPluginInstallAsync(commandContext, installer).ConfigureAwait(false);
+        }
+
+        // apply-update 命令：启动 Avalonia GUI 显示更新进度窗口
+        if (string.Equals(commandContext.Command, "apply-update", StringComparison.OrdinalIgnoreCase))
+        {
+            LauncherRuntimeContext.Current = commandContext;
+            BuildAvaloniaApp().StartWithClassicDesktopLifetime(args);
+            return Environment.ExitCode;
+        }
+
+        // 处理其他 CLI 命令 (update, plugin, rollback 等)
+        if (!string.Equals(commandContext.Command, "launch", StringComparison.OrdinalIgnoreCase))
+        {
+            return await Commands.RunCliCommandAsync(commandContext).ConfigureAwait(false);
+        }
+
+        // 主启动流程: OOBE -> Splash -> 版本选择 -> 启动主程序
+        LauncherRuntimeContext.Current = commandContext;
+        BuildAvaloniaApp().StartWithClassicDesktopLifetime(args);
+        return Environment.ExitCode;
+    }
+
+    private static AppBuilder BuildAvaloniaApp()
+    {
+        return AppBuilder.Configure<App>()
+            .UsePlatformDetect()
+            .WithInterFont()
+            .LogToTrace();
+    }
+}