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/ChromeTabDeduplicationTests.cs

@@ -0,0 +1,55 @@
+using System.Linq;
+using Paca.Browser.Tabs;
+using Xunit;
+
+namespace Paca.Tests.Browser;
+
+public class ChromeTabDeduplicationTests
+{
+    [Fact]
+    public void CloseDuplicateTabs_Closes_Redundant_Tabs_Keeping_Original()
+    {
+        var mgr = new TabManager(() => new TabItem());
+        var tab1 = mgr.NewTab("https://example.com/page1"); // original
+        var tab2 = mgr.NewTab("https://example.com/page2");
+        var tab3 = mgr.NewTab("https://example.com/page1", activate: false); // duplicate of tab1
+        var tab4 = mgr.NewTab("https://example.com/page1", activate: false); // another duplicate
+        var tab5 = mgr.NewTab("https://example.com/page2", activate: false); // duplicate of tab2
+
+        Assert.Equal(5, mgr.Tabs.Count);
+
+        int closed = mgr.CloseDuplicateTabs();
+        Assert.Equal(3, closed);
+        Assert.Equal(2, mgr.Tabs.Count);
+        Assert.Contains(tab1, mgr.Tabs);
+        Assert.Contains(tab2, mgr.Tabs);
+        Assert.DoesNotContain(tab3, mgr.Tabs);
+        Assert.DoesNotContain(tab4, mgr.Tabs);
+        Assert.DoesNotContain(tab5, mgr.Tabs);
+    }
+
+    [Fact]
+    public void CloseDuplicateTabs_Preserves_Locked_Tabs()
+    {
+        var mgr = new TabManager(() => new TabItem());
+        var tab1 = mgr.NewTab("https://example.com/locked");
+        var tab2 = mgr.NewTab("https://example.com/locked", activate: false);
+        tab2.IsLocked = true; // locked duplicate should not be closed
+
+        int closed = mgr.CloseDuplicateTabs();
+        Assert.Equal(0, closed);
+        Assert.Equal(2, mgr.Tabs.Count);
+    }
+
+    [Theory]
+    [InlineData("중복 탭 닫기")]
+    [InlineData("중복 탭 정리")]
+    [InlineData("close duplicates")]
+    [InlineData("dedup tabs")]
+    public void Omnibox_Matches_CloseDuplicates_Action(string query)
+    {
+        var actions = OmniboxActionEvaluator.GetMatchingActions(query);
+        Assert.NotEmpty(actions);
+        Assert.Contains(actions, a => a.ActionId == "action:close-duplicates");
+    }
+}