Desktop: keep a vault-visibility failure from closing the app, and leave a crash log when anything else does

src/DodoSSH.Client.App/Program.cs

@@ -75,6 +75,9 @@ internal static class Program
 
         LaunchLink = link;
 
+        // After the claim, so a second launch that only hands its link over writes nothing.
+        CrashLog.Install(paths);
+
         BuildAvaloniaApp().StartWithClassicDesktopLifetime(args);
     }