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.

src/AcDream.App/UI/Layout/OptionsPanelController.cs

@@ -134,6 +134,28 @@ public sealed class OptionsPanelController : IRetainedPanelController
 
     public OptionPage ConfigPage => _pages[ConfigPageId];
 
+    /// <summary>True when the authored Gameplay Options page is active.</summary>
+    public bool IsShowingGameplay =>
+        _tabPanel.ActivePageElementId == GameplayPageId;
+
+    public bool IsShowingCharacter =>
+        _tabPanel.ActivePageElementId == CharacterPageId;
+
+    public bool IsShowingConfiguration =>
+        _tabPanel.ActivePageElementId == ConfigPageId;
+
+    /// <summary>
+    /// Programmatic form of retail action <c>0x1000001B</c>, resolved from
+    /// the installed ActionMap as "Show/Hide Gameplay Options Page". This is
+    /// the final fallback of <c>ClientUISystem::OnAction(EscapeKey)</c> at
+    /// <c>0x00564CBF</c>.
+    /// </summary>
+    public void ShowGameplay() => _tabPanel.SwitchTo(GameplayPageId);
+
+    public void ShowCharacter() => _tabPanel.SwitchTo(CharacterPageId);
+
+    public void ShowConfiguration() => _tabPanel.SwitchTo(ConfigPageId);
+
     private OptionsPanelController(UiTabPanel tabPanel, Action? afterApply)
     {
         _tabPanel = tabPanel;