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

tests/Paca.Tests/App/QuickActionLauncherIntegrationGateTests.cs

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+using System;
+using System.IO;
+using System.Linq;
+using Paca.Core.QuickActions;
+using Xunit;
+
+namespace Paca.Tests.App;
+
+public class QuickActionLauncherIntegrationGateTests
+{
+    private static readonly string SolutionRoot = Path.GetFullPath(Path.Combine(AppContext.BaseDirectory, "..", "..", "..", "..", ".."));
+
+    [Fact]
+    public void Gate_MainWindow_IntegratesQuickActionServicesAndTray()
+    {
+        var mwPath = Path.Combine(SolutionRoot, "src", "Paca.App", "MainWindow.xaml.cs");
+        Assert.True(File.Exists(mwPath), $"MainWindow.xaml.cs must exist at {mwPath}");
+        var code = File.ReadAllText(mwPath);
+
+        // Global hotkey integration
+        Assert.Contains("InitializeQuickActionServices", code);
+        Assert.Contains("Shift+Ctrl+Alt+P", code);
+        Assert.Contains("ShowQuickActionLauncher", code);
+
+        // Windows tray daemon integration
+        Assert.Contains("WindowsTrayDaemon", code);
+        Assert.Contains("CloseToTray", code);
+        Assert.Contains("ForceClose", code);
+    }
+
+    [Fact]
+    public void Gate_QuickActionLauncher_ExecuteAction_ExecutesHandlerWithContext()
+    {
+        var catalog = new QuickActionCatalog();
+        bool actionRan = false;
+        string? passedQuery = null;
+
+        var customAction = new QuickActionItem(
+            "test.custom_action",
+            "테스트 액션",
+            QuickActionCategory.Developer,
+            "test custom action",
+            "Ctrl+Alt+T",
+            "\uE710",
+            ctx =>
+            {
+                actionRan = true;
+                passedQuery = ctx.SelectedText;
+            }
+        );
+
+        catalog.RegisterAction(customAction);
+
+        var retrieved = catalog.FindById("test.custom_action");
+        Assert.NotNull(retrieved);
+
+        var context = new QuickActionContext(SelectedText: "hello world");
+        retrieved.Handler?.Invoke(context);
+
+        Assert.True(actionRan);
+        Assert.Equal("hello world", passedQuery);
+    }
+
+    [Fact]
+    public void Gate_QuickActionCatalog_Contains200PlusActionsAcross8Categories()
+    {
+        var catalog = new QuickActionCatalog();
+        var all = catalog.GetAllActions();
+
+        Assert.True(all.Count >= 200, $"Expected >= 200 actions, but got {all.Count}");
+
+        // Verify all 8 categories are populated
+        foreach (QuickActionCategory cat in Enum.GetValues<QuickActionCategory>())
+        {
+            var catItems = catalog.GetByCategory(cat);
+            Assert.True(catItems.Count > 0, $"Category {cat} must contain at least 1 action.");
+        }
+    }
+}