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/ChromeHistoryEngineTests.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using Paca.Browser.History;
+using Xunit;
+
+namespace Paca.Tests.Browser;
+
+public class ChromeHistoryEngineTests
+{
+    [Fact]
+    public void HistoryFilter_Filters_By_Keywords_And_Domain()
+    {
+        var now = DateTime.UtcNow;
+        var entries = new List<ChromeHistoryEntry>
+        {
+            new("https://github.com/microsoft/vscode", "Microsoft VS Code Repository", now.AddMinutes(-10)),
+            new("https://github.com/dotnet/runtime", "dotnet/runtime on GitHub", now.AddHours(-1)),
+            new("https://developer.mozilla.org/en-US/", "MDN Web Docs", now.AddHours(-2)),
+            new("https://news.ycombinator.com/", "Hacker News", now.AddDays(-1))
+        };
+
+        var engine = new ChromeHistoryEngine(entries);
+
+        // Keyword search in title or url
+        var searchGit = engine.Search("GitHub");
+        Assert.Equal(2, searchGit.Count);
+
+        var searchMdn = engine.Search("docs");
+        Assert.Single(searchMdn);
+        Assert.Equal("MDN Web Docs", searchMdn[0].Title);
+
+        // Domain search
+        var domainHits = engine.GetByDomain("github.com");
+        Assert.Equal(2, domainHits.Count);
+    }
+
+    [Fact]
+    public void HistoryClustering_Groups_Into_Today_Yesterday_Last7Days_And_Older()
+    {
+        var now = new DateTime(2026, 9, 13, 12, 0, 0, DateTimeKind.Utc);
+        var entries = new List<ChromeHistoryEntry>
+        {
+            new("https://site1.com", "Site 1", now.AddMinutes(-5)),           // Today
+            new("https://site2.com", "Site 2", now.AddDays(-1).AddHours(-1)), // Yesterday
+            new("https://site3.com", "Site 3", now.AddDays(-3)),              // Last 7 Days
+            new("https://site4.com", "Site 4", now.AddDays(-10))              // Older
+        };
+
+        var engine = new ChromeHistoryEngine(entries);
+        var clustered = engine.GetClusteredHistory(now);
+
+        Assert.Single(clustered.Today);
+        Assert.Equal("Site 1", clustered.Today[0].Title);
+
+        Assert.Single(clustered.Yesterday);
+        Assert.Equal("Site 2", clustered.Yesterday[0].Title);
+
+        Assert.Single(clustered.Last7Days);
+        Assert.Equal("Site 3", clustered.Last7Days[0].Title);
+
+        Assert.Single(clustered.Older);
+        Assert.Equal("Site 4", clustered.Older[0].Title);
+    }
+
+    [Fact]
+    public void HistoryAggregator_Groups_By_Domain_With_Visit_Counts()
+    {
+        var now = DateTime.UtcNow;
+        var entries = new List<ChromeHistoryEntry>
+        {
+            new("https://github.com/microsoft/vscode", "VS Code", now.AddMinutes(-10)),
+            new("https://github.com/dotnet/runtime", "Dotnet", now.AddMinutes(-5)),
+            new("https://github.com/golang/go", "Golang", now),
+            new("https://google.com/search?q=test", "Google Search", now.AddHours(-1))
+        };
+
+        var engine = new ChromeHistoryEngine(entries);
+        var domainSummaries = engine.GetDomainSummaries();
+
+        Assert.Equal(2, domainSummaries.Count);
+
+        var githubSummary = domainSummaries.First(s => s.Domain == "github.com");
+        Assert.Equal(3, githubSummary.TotalVisits);
+        Assert.Equal(3, githubSummary.Entries.Count);
+
+        var googleSummary = domainSummaries.First(s => s.Domain == "google.com");
+        Assert.Equal(1, googleSummary.TotalVisits);
+    }
+
+    [Fact]
+    public void HistoryDeletion_Removes_By_Domain_Or_Date_Range()
+    {
+        var now = DateTime.UtcNow;
+        var entries = new List<ChromeHistoryEntry>
+        {
+            new("https://github.com/1", "GH1", now.AddMinutes(-10)),
+            new("https://github.com/2", "GH2", now.AddHours(-5)),
+            new("https://google.com/1", "G1", now.AddDays(-2)),
+            new("https://spam.com/bad", "Spam", now.AddDays(-15))
+        };
+
+        var engine = new ChromeHistoryEngine(entries);
+
+        // Delete by domain
+        int deletedGithub = engine.DeleteByDomain("github.com");
+        Assert.Equal(2, deletedGithub);
+        Assert.Equal(2, engine.AllEntries.Count);
+        Assert.DoesNotContain(engine.AllEntries, e => e.Url.Contains("github.com"));
+
+        // Clear older than 10 days
+        int deletedOld = engine.ClearOlderThan(TimeSpan.FromDays(10), now);
+        Assert.Equal(1, deletedOld);
+        Assert.Single(engine.AllEntries);
+        Assert.Equal("https://google.com/1", engine.AllEntries[0].Url);
+    }
+
+    [Theory]
+    [InlineData("방문 기록")]
+    [InlineData("히스토리")]
+    [InlineData("history")]
+    [InlineData("search history")]
+    public void Omnibox_Matches_History_Action(string query)
+    {
+        var actions = Paca.Browser.Tabs.OmniboxActionEvaluator.GetMatchingActions(query);
+        Assert.NotEmpty(actions);
+        Assert.Contains(actions, a => a.ActionId == "action:history");
+    }
+}