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/ChromeParityMilestone10Tests.cs

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+using System;
+using System.IO;
+using System.Linq;
+using System.Windows.Controls;
+using Paca.App;
+using Paca.Browser;
+using Paca.Browser.Tabs;
+using Paca.Tests.Infrastructure;
+using Xunit;
+
+namespace Paca.Tests.Browser;
+
+public class ChromeParityMilestone10Tests
+{
+    [Fact]
+    public void BuildTabContextMenu_새창으로_이동_및_절전모드_전환_옵션_포함()
+    {
+        using var sta = StaDispatcher.Start();
+        WpfTestApp.Ensure(sta.Dispatcher);
+        sta.Invoke(() =>
+        {
+            var dataDir = Path.Combine(Path.GetTempPath(), $"vd_tab_win_{Guid.NewGuid():N}");
+            Environment.SetEnvironmentVariable("VD_DATA_DIR", dataDir);
+            try
+            {
+                var win = new MainWindow();
+                win.TabsManager.Tabs.Clear();
+                var t1 = win.TabsManager.NewTab("https://site1.com");
+                var t2 = win.TabsManager.NewTab("https://site2.com");
+
+                var menu = win.BuildTabContextMenu(t1);
+                var items = menu.Items.OfType<MenuItem>().Select(m => m.Header?.ToString()).ToList();
+
+                Assert.Contains("새 창으로 탭 이동", items);
+                Assert.Contains("탭 절전 모드로 전환", items);
+            }
+            finally
+            {
+                try { if (Directory.Exists(dataDir)) Directory.Delete(dataDir, true); } catch { }
+            }
+        });
+    }
+
+    [Fact]
+    public void DiscardTab_활성탭은_절전불가_비활성탭은_절전모드로_전환된다()
+    {
+        using var sta = StaDispatcher.Start();
+        WpfTestApp.Ensure(sta.Dispatcher);
+        sta.Invoke(() =>
+        {
+            var dataDir = Path.Combine(Path.GetTempPath(), $"vd_discard_{Guid.NewGuid():N}");
+            Environment.SetEnvironmentVariable("VD_DATA_DIR", dataDir);
+            try
+            {
+                var win = new MainWindow();
+                win.TabsManager.Tabs.Clear();
+                var t1 = win.TabsManager.NewTab("https://site1.com");
+                var t2 = win.TabsManager.NewTab("https://site2.com");
+
+                win.TabsManager.Activate(t1);
+
+                // t1은 현재 활성 탭이므로 절전 전환 거부(Chrome 메모리 세이버 사양)
+                var discardedActive = win.DiscardTab(t1);
+                Assert.False(discardedActive);
+                Assert.False(t1.IsSuspended);
+
+                // t2는 비활성 탭이므로 절전 전환 성공
+                var discardedInactive = win.DiscardTab(t2);
+                Assert.True(discardedInactive);
+                Assert.True(t2.IsSuspended);
+            }
+            finally
+            {
+                try { if (Directory.Exists(dataDir)) Directory.Delete(dataDir, true); } catch { }
+            }
+        });
+    }
+}