feat(ads/seo/release): v1.2.0 with live Google Ads, isolated ad profile, ads.txt, and SEO/AEO/GEO optimization

tests/Paca.Tests/Browser/ChromeParityMilestone17Tests.cs

@@ -0,0 +1,43 @@
+using System;
+using System.IO;
+using Paca.App;
+using Paca.Browser.Tabs;
+using Paca.Tests.Infrastructure;
+using Xunit;
+
+namespace Paca.Tests.Browser;
+
+public class ChromeParityMilestone17Tests
+{
+    [Fact]
+    public void DownloadShelf_모두표시_버튼_XAML_선언_검증()
+    {
+        var xamlPath = SourceTree.AppPath("MainWindow.xaml");
+        Assert.True(File.Exists(xamlPath), "MainWindow.xaml 파일이 존재해야 합니다.");
+        var xaml = File.ReadAllText(xamlPath);
+
+        Assert.Contains("DownloadShelfShowAllBtn", xaml);
+        Assert.Contains("모두 표시", xaml);
+    }
+
+    [Fact]
+    public void MainWindow_AltP_탭고정_토글_단축키_검증()
+    {
+        var csPath = SourceTree.AppPath("MainWindow.xaml.cs");
+        Assert.True(File.Exists(csPath), "MainWindow.xaml.cs 파일이 존재해야 합니다.");
+        var code = File.ReadAllText(csPath);
+
+        // Alt+P 키 입력 시 탭 고정(Pin) 토글 동작이 선언되어 있어야 함
+        Assert.Contains("Key.P", code);
+        Assert.Contains("SetPinned", code);
+    }
+
+    [Fact]
+    public void MainWindow_AddressBox_PreviewMouseLeftButtonDown_선언_검증()
+    {
+        var xamlPath = SourceTree.AppPath("MainWindow.xaml");
+        var xaml = File.ReadAllText(xamlPath);
+
+        Assert.Contains("PreviewMouseLeftButtonDown=\"AddressBox_PreviewMouseLeftButtonDown\"", xaml);
+    }
+}