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.UI.Abstractions.Tests/Input/InputDispatcherTests.cs

@@ -101,6 +101,22 @@ public class InputDispatcherTests
             fired);
     }
 
+    [Fact]
+    public void Same_scope_retail_duplicate_chord_fires_every_distinct_action()
+    {
+        var (_, kb, _, bindings, fired) = Build();
+        var chord = new KeyChord(Key.Number1, ModifierMask.Alt);
+        bindings.Add(new Binding(chord, InputAction.ToggleFloatingChatWindow1));
+        bindings.Add(new Binding(chord, InputAction.UseQuickSlot_10));
+
+        kb.EmitKeyDown(Key.Number1, ModifierMask.Alt);
+
+        Assert.Equal(
+            [(InputAction.ToggleFloatingChatWindow1, ActivationType.Press),
+             (InputAction.UseQuickSlot_10, ActivationType.Press)],
+            fired);
+    }
+
     [Fact]
     public void Changing_combat_scope_releases_hold_resolved_in_previous_scope()
     {
@@ -188,6 +204,30 @@ public class InputDispatcherTests
         Assert.Empty(fired); // no longer held
     }
 
+    [Fact]
+    public void RetailBareLeftShiftBinding_NormalizesSilkSelfModifierBit()
+    {
+        var kb = new FakeKeyboardSource();
+        var mouse = new FakeMouseSource();
+        var dispatcher = InputDispatcher.CreateDetached(
+            kb,
+            mouse,
+            KeyBindings.RetailDefaults());
+        dispatcher.Attach();
+        var fired = new List<(InputAction, ActivationType)>();
+        dispatcher.Fired += (action, activation) => fired.Add((action, activation));
+
+        kb.EmitKeyDown(Key.ShiftLeft, ModifierMask.Shift);
+        kb.EmitKeyUp(Key.ShiftLeft, ModifierMask.Shift);
+
+        Assert.Contains(
+            (InputAction.MovementWalkMode, ActivationType.Press),
+            fired);
+        Assert.Contains(
+            (InputAction.MovementWalkMode, ActivationType.Release),
+            fired);
+    }
+
     [Fact]
     public void Hold_callback_scope_change_DoesNotDispatchStaleSnapshotChord()
     {