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/KeyBindingsJsonTests.cs

@@ -104,10 +104,19 @@ public class KeyBindingsJsonTests
         var path = TempFile();
         try
         {
-            // User customizes ONE action — replace MovementForward with Q.
-            var custom = new KeyBindings();
-            custom.Add(new(new KeyChord(Key.Q, ModifierMask.None), InputAction.MovementForward));
-            custom.SaveToFile(path);
+            // A pre-v7 partial file customizes ONE action. Missing actions in
+            // those schemas mean "not stored yet", so they default-merge.
+            const string legacyJson = """
+                {
+                  "version": 6,
+                  "actions": {
+                    "MovementForward": [
+                      { "key": "Q" }
+                    ]
+                  }
+                }
+                """;
+            File.WriteAllText(path, legacyJson);
 
             var loaded = KeyBindings.LoadOrDefault(path);
 
@@ -128,6 +137,32 @@ public class KeyBindingsJsonTests
         }
     }
 
+    [Fact]
+    public void Roundtrip_preserves_explicitly_unbound_retail_action()
+    {
+        var path = TempFile();
+        try
+        {
+            KeyBindings defaults = KeyBindings.RetailDefaults();
+            var customized = new KeyBindings();
+            foreach (Binding binding in defaults.All)
+            {
+                if (binding.Action != InputAction.ToggleHelp)
+                    customized.Add(binding);
+            }
+
+            customized.SaveToFile(path);
+            KeyBindings loaded = KeyBindings.LoadOrDefault(path);
+
+            Assert.Empty(loaded.ForAction(InputAction.ToggleHelp));
+            Assert.NotEmpty(loaded.ForAction(InputAction.ToggleOptionsPanel));
+        }
+        finally
+        {
+            if (File.Exists(path)) File.Delete(path);
+        }
+    }
+
     [Fact]
     public void LoadOrDefault_handles_version_zero_legacy_file()
     {
@@ -193,17 +228,16 @@ public class KeyBindingsJsonTests
     }
 
     [Fact]
-    public void LoadOrDefault_migratesV1CtrlNumberQuickSlotFromUseToSelect()
+    public void LoadOrDefault_migratesV5CtrlNumberQuickSlotFromSelectBackToRetailUse()
     {
         var path = TempFile();
         try
         {
             const string json = """
                 {
-                  "version": 1,
+                  "version": 5,
                   "actions": {
-                    "UseQuickSlot_5": [
-                      { "key": "Number5" },
+                    "SelectQuickSlot_5": [
                       { "key": "Number5", "mod": "Ctrl" }
                     ]
                   }
@@ -214,9 +248,8 @@ public class KeyBindingsJsonTests
             var loaded = KeyBindings.LoadOrDefault(path);
 
             Assert.Equal(InputAction.UseQuickSlot_5,
-                loaded.Find(new KeyChord(Key.Number5, ModifierMask.None), ActivationType.Press)?.Action);
-            Assert.Equal(InputAction.SelectQuickSlot_5,
                 loaded.Find(new KeyChord(Key.Number5, ModifierMask.Ctrl), ActivationType.Press)?.Action);
+            Assert.Empty(loaded.ForAction(InputAction.SelectQuickSlot_5));
         }
         finally
         {