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/Layout/SpellcastingShortcutInputTests.cs

@@ -0,0 +1,47 @@
+using AcDream.App.UI.Layout;
+using AcDream.UI.Abstractions.Input;
+
+namespace AcDream.App.Tests.UI.Layout;
+
+public sealed class SpellcastingShortcutInputTests
+{
+    [Fact]
+    public void EveryRetailFavoriteSpellSlotHasALiveConsumer()
+    {
+        InputAction[] slots = RetailActionIdentityTable.Map
+            .Where(entry => entry.Key.InputMapId == 0x10000005u)
+            .Select(entry => entry.Value)
+            .Where(action => action.ToString().StartsWith(
+                "UseSpellSlot_",
+                StringComparison.Ordinal))
+            .ToArray();
+
+        Assert.Equal(12, slots.Length);
+        Assert.Equal(
+            Enumerable.Range(0, 12),
+            slots.Select(action =>
+            {
+                Assert.True(
+                    SpellcastingUiController.TryMapSpellShortcut(
+                        action,
+                        out int index),
+                    $"No favorite-spell consumer for {action}");
+                return index;
+            }).Order());
+    }
+
+    [Theory]
+    [InlineData(InputAction.UseSpellSlot_1, 0)]
+    [InlineData(InputAction.UseSpellSlot_9, 8)]
+    [InlineData(InputAction.UseSpellSlot_10, 9)]
+    [InlineData(InputAction.UseSpellSlot_11, 10)]
+    [InlineData(InputAction.UseSpellSlot_12, 11)]
+    public void AllRetailSpellSlotsMapToFavoriteIndex(
+        InputAction action,
+        int expectedIndex)
+    {
+        Assert.True(
+            SpellcastingUiController.TryMapSpellShortcut(action, out int index));
+        Assert.Equal(expectedIndex, index);
+    }
+}