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/ChromeParityMilestone18Tests.cs

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+using System;
+using System.IO;
+using Paca.Browser;
+using Paca.Tests.Infrastructure;
+using Xunit;
+
+namespace Paca.Tests.Browser;
+
+public class ChromeParityMilestone18Tests
+{
+    [Fact]
+    public void GetSuggestions_chrome_스킴_입력시_내부페이지_전체_제안()
+    {
+        var suggestions = ChromeInternalUrlRouter.GetSuggestions("chrome://");
+        Assert.NotEmpty(suggestions);
+        Assert.Contains(suggestions, s => s.Url == "chrome://downloads");
+        Assert.Contains(suggestions, s => s.Url == "chrome://history");
+        Assert.Contains(suggestions, s => s.Url == "chrome://settings");
+        Assert.Contains(suggestions, s => s.Url == "chrome://bookmarks");
+    }
+
+    [Fact]
+    public void GetSuggestions_키워드_부분일치_정상_필터링()
+    {
+        var suggestions = ChromeInternalUrlRouter.GetSuggestions("chrome://down");
+        Assert.Single(suggestions);
+        Assert.Equal("chrome://downloads", suggestions[0].Url);
+        Assert.Contains("다운로드", suggestions[0].Title);
+
+        var pacaSuggestions = ChromeInternalUrlRouter.GetSuggestions("paca://set");
+        Assert.Contains(pacaSuggestions, s => s.Url == "paca://settings");
+        Assert.Contains(pacaSuggestions, s => s.Url == "paca://settings/content");
+
+        var pacaContentSuggestions = ChromeInternalUrlRouter.GetSuggestions("paca://settings/c");
+        Assert.Single(pacaContentSuggestions);
+        Assert.Equal("paca://settings/content", pacaContentSuggestions[0].Url);
+    }
+
+    [Fact]
+    public void MainWindow_UpdateSuggestions_내부페이지_제안_통합_검증()
+    {
+        var csPath = SourceTree.AppPath("MainWindow.xaml.cs");
+        Assert.True(File.Exists(csPath), "MainWindow.xaml.cs 파일이 존재해야 합니다.");
+        var code = File.ReadAllText(csPath);
+
+        Assert.Contains("ChromeInternalUrlRouter.GetSuggestions", code);
+    }
+}