feat(chat): port retail client command families

Expand the typed client-command boundary across travel, character queries, local UI and layout controls, AFK and consent, emotes, friends, squelch and filters, and fill-components. Preserve retail packet layouts and queue ownership, import the confirmation dialog, and keep authoritative social state in Core.

Co-Authored-By: Codex <codex@openai.com>

tests/AcDream.App.Tests/UI/Layout/RetailConfirmationDialogServiceTests.cs

@@ -0,0 +1,67 @@
+using AcDream.App.UI;
+using AcDream.App.UI.Layout;
+
+namespace AcDream.App.Tests.UI.Layout;
+
+public sealed class RetailConfirmationDialogServiceTests
+{
+    [Fact]
+    public void FixtureBuildsProductionConfirmationWidgets()
+    {
+        var layout = FixtureLoader.LoadConfirmationDialog();
+
+        Assert.IsType<UiDialogRoot>(layout.Root);
+        Assert.IsType<UiText>(layout.FindElement(RetailConfirmationDialogService.MessageElementId));
+        Assert.IsType<UiButton>(layout.FindElement(RetailConfirmationDialogService.AcceptButtonId));
+        Assert.IsType<UiButton>(layout.FindElement(RetailConfirmationDialogService.RejectButtonId));
+    }
+
+    [Fact]
+    public void ShowCentersModalAndAcceptCompletesIt()
+    {
+        var root = new UiRoot { Width = 1024f, Height = 768f };
+        var layout = FixtureLoader.LoadConfirmationDialog();
+        var service = new RetailConfirmationDialogService(root, layout);
+        bool? result = null;
+
+        service.Show("Do you really want to kill your character?", accepted => result = accepted);
+
+        Assert.Same(layout.Root, root.Modal);
+        var popup = Assert.IsAssignableFrom<UiElement>(
+            layout.FindElement(RetailConfirmationDialogService.PopupElementId));
+        Assert.Equal(MathF.Round((1024f - popup.Width) * 0.5f), popup.Left);
+        Assert.Equal(MathF.Round((768f - popup.Height) * 0.5f), popup.Top);
+
+        var accept = Assert.IsType<UiButton>(
+            layout.FindElement(RetailConfirmationDialogService.AcceptButtonId));
+        accept.OnClick!();
+
+        Assert.True(result);
+        Assert.Null(root.Modal);
+        Assert.False(service.IsOpen);
+    }
+
+    [Fact]
+    public void RequestsArePresentedInFifoOrder()
+    {
+        var root = new UiRoot { Width = 800f, Height = 600f };
+        var layout = FixtureLoader.LoadConfirmationDialog();
+        var service = new RetailConfirmationDialogService(root, layout);
+        var results = new List<string>();
+
+        service.Show("first", accepted => results.Add($"first:{accepted}"));
+        service.Show("second", accepted => results.Add($"second:{accepted}"));
+
+        Assert.Equal(1, service.PendingCount);
+        Assert.IsType<UiButton>(layout.FindElement(
+            RetailConfirmationDialogService.RejectButtonId)).OnClick!();
+        Assert.Equal(["first:False"], results);
+        Assert.True(service.IsOpen);
+        Assert.Equal(0, service.PendingCount);
+
+        Assert.IsType<UiButton>(layout.FindElement(
+            RetailConfirmationDialogService.AcceptButtonId)).OnClick!();
+        Assert.Equal(["first:False", "second:True"], results);
+        Assert.False(service.IsOpen);
+    }
+}