로그인 STA 스레드화·SSO 로그아웃·UserInfo 역직렬화 수정 및 AuthTest 추가

- LoginWindow: 로그인/로그아웃/쿠키삭제를 전용 STA 스레드(자체 Dispatcher 펌프)에서 실행
  → SignIn/SignInAsync가 MTA/STA 어느 스레드에서 호출돼도 동작 (RunOnDedicatedUiThreadAsync, AuthenticateAsync)
- SsoClient: 로그인/로그아웃 창을 AuthenticateAsync로 호출, 크로스스레드 Owner 제거
- BaronSSO: SignIn/SignOut을 Task.Run(...).GetAwaiter().GetResult()로 정리, SignInAsync 데드락 주석 추가
- UserInfo: private set 프로퍼티에 [JsonInclude] 적용 → FromSsoFile 역직렬화 복원 정상화, LastAuthTime [JsonIgnore]
- AuthTest 샘플 프로젝트 추가

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

AuthTest/App.xaml

@@ -0,0 +1,10 @@
+<Application x:Class="AuthTest.App"
+             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:local="clr-namespace:AuthTest"
+             ShutdownMode="OnMainWindowClose"
+             StartupUri="MainWindow.xaml">
+    <Application.Resources>
+         
+    </Application.Resources>
+</Application>

AuthTest/App.xaml.cs

@@ -0,0 +1,31 @@
+using BaronSoftware.SSO;
+using System.Configuration;
+using System.Data;
+using System.Threading.Tasks;
+using System.Windows;
+
+namespace AuthTest
+{
+    /// <summary>
+    /// Interaction logic for App.xaml
+    /// </summary>
+    public partial class App : Application
+    {
+        protected override void OnStartup(StartupEventArgs e)
+        {
+            base.OnStartup(e);
+
+            BaronSSOOption option = new()
+            {
+                Authority = "https://sso.hmac.kr/oidc",
+                ClientId = "aca44872-8280-40c3-9a80-3aefafdf722a",
+                RedirectUri = "http://localhost:9090/eg-bim/auth/callback",
+                PostLogoutRedirectUri = "http://localhost:9090/eg-bim/logout/callback",
+                ExtraUserValidator = new ExtraUserInvalidator()
+            };
+            var auth = new BaronSSO(option);
+            auth.SignIn();
+        }
+    }
+
+}

AuthTest/AssemblyInfo.cs

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+using System.Windows;
+
+[assembly: ThemeInfo(
+    ResourceDictionaryLocation.None,            //where theme specific resource dictionaries are located
+                                                //(used if a resource is not found in the page,
+                                                // or application resource dictionaries)
+    ResourceDictionaryLocation.SourceAssembly   //where the generic resource dictionary is located
+                                                //(used if a resource is not found in the page,
+                                                // app, or any theme specific resource dictionaries)
+)]

AuthTest/AuthTest.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>WinExe</OutputType>
+    <TargetFramework>net8.0-windows</TargetFramework>
+    <Nullable>enable</Nullable>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <UseWPF>true</UseWPF>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\BaronSoftware.SSO\BaronSoftware.SSO.csproj" />
+  </ItemGroup>
+
+</Project>

AuthTest/ExtraUserInvalidator.cs

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+using BaronSoftware.SSO;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace AuthTest
+{
+    public class ExtraUserInvalidator : IUserValidator
+    {
+        public void Validate(UserInfo user)
+        {
+        }
+    }
+}

AuthTest/MainWindow.xaml

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+<Window x:Class="AuthTest.MainWindow"
+        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+        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:local="clr-namespace:AuthTest"
+        mc:Ignorable="d"
+        Title="MainWindow" Height="450" Width="800">
+    <Grid>
+
+    </Grid>
+</Window>

AuthTest/MainWindow.xaml.cs

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+using System.Text;
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Data;
+using System.Windows.Documents;
+using System.Windows.Input;
+using System.Windows.Media;
+using System.Windows.Media.Imaging;
+using System.Windows.Navigation;
+using System.Windows.Shapes;
+
+namespace AuthTest
+{
+    /// <summary>
+    /// Interaction logic for MainWindow.xaml
+    /// </summary>
+    public partial class MainWindow : Window
+    {
+        public MainWindow()
+        {
+            InitializeComponent();
+        }
+    }
+}