fix(client): restore retail interaction parity

Harden keyboard and camera routing, inventory and vendor interactions, chat/emotes, relog portal flow, and paperdoll rendering. Add retail research, connected gate coverage, and release-gate validation.

tests/AcDream.App.Tests/UI/UiRootInputTests.cs

@@ -6,6 +6,44 @@ namespace AcDream.App.Tests.UI;
 
 public class UiRootInputTests
 {
+    [Fact]
+    public void KeypadEnter_DoesNotUseTheRawChatActivationFallback()
+    {
+        var root = new UiRoot { Width = 800, Height = 600 };
+        var field = new UiField { Width = 100, Height = 20 };
+        root.AddChild(field);
+        root.DefaultTextInput = field;
+
+        root.OnKeyDown((int)Silk.NET.Input.Key.KeypadEnter);
+
+        Assert.Null(root.KeyboardFocus);
+    }
+
+    [Fact]
+    public void SemanticChatActivation_SuppressesTheSameNativeEnterTail()
+    {
+        var root = new UiRoot { Width = 800, Height = 600 };
+        var field = new UiField { Width = 100, Height = 20 };
+        int submissions = 0;
+        field.SetText("hello");
+        field.OnSubmit = _ => submissions++;
+        root.AddChild(field);
+        root.DefaultTextInput = field;
+        root.SetKeyboardFocus(field);
+        root.SuppressPhysicalKeyUntilRelease(Silk.NET.Input.Key.Enter);
+
+        root.OnKeyDown((int)Silk.NET.Input.Key.Enter);
+        root.OnChar('x');
+
+        Assert.Equal(0, submissions);
+        Assert.Equal("hello", field.Text);
+        Assert.Same(field, root.KeyboardFocus);
+
+        root.OnKeyUp((int)Silk.NET.Input.Key.Enter);
+        root.OnChar('x');
+        Assert.Equal("hellox", field.Text);
+    }
+
     [Fact]
     public void UiNineSlicePanel_IsNotAnchorManaged_SoUserMoveResizeSticks()
     {