feat.数字时钟，白板功能修复

LanMountainDesktop.AirAppHost/Program.cs

@@ -1,4 +1,5 @@
 using Avalonia;
+using LanMountainDesktop.Services;
 
 namespace LanMountainDesktop.AirAppHost;
 
@@ -7,8 +8,22 @@ internal static class Program
     [STAThread]
     public static void Main(string[] args)
     {
-        BuildAvaloniaApp()
-            .StartWithClassicDesktopLifetime(args);
+        AppLogger.Initialize();
+        AppDataPathProvider.Initialize(args);
+        RegisterGlobalExceptionLogging();
+        AppLogger.Info("AirAppHost", $"Starting. Args='{string.Join(" ", args)}'.");
+
+        try
+        {
+            BuildAvaloniaApp()
+                .StartWithClassicDesktopLifetime(args);
+            AppLogger.Info("AirAppHost", "Exited normally.");
+        }
+        catch (Exception ex)
+        {
+            AppLogger.Critical("AirAppHost", "Unhandled startup exception.", ex);
+            throw;
+        }
     }
 
     private static AppBuilder BuildAvaloniaApp()
@@ -18,4 +33,21 @@ internal static class Program
             .WithInterFont()
             .LogToTrace();
     }
+
+    private static void RegisterGlobalExceptionLogging()
+    {
+        AppDomain.CurrentDomain.UnhandledException += (_, e) =>
+        {
+            AppLogger.Critical(
+                "AirAppHost",
+                "Unhandled AppDomain exception.",
+                e.ExceptionObject as Exception);
+        };
+
+        TaskScheduler.UnobservedTaskException += (_, e) =>
+        {
+            AppLogger.Error("AirAppHost", "Unobserved task exception.", e.Exception);
+            e.SetObserved();
+        };
+    }
 }